Trng ai Hoc Bach Khoa TP HCM Khoa Ky Thuat Hoa Hoc Bo mon Cong Nghe Thc Pham----------------

Tieu luan mon Thit K My v Nh My Thc PhmTHIT K QUY TRNH SN XUT SN PHM T THT THT HEO HM NG HPGVHD: ThS. Nguyn Th Hin SVTH: Nguyen Th Hong Nhung

60901866 Vo Thanh Trung 60903020 Tran 60902874 Tran Quoc Tuan 60903133 Vu Phng Trang

THANH PHO HO CH MINH, 5/2012

---------------M U Cc sn phm thc phm ch bin sn nh jambon, xc xch, salami t lu rt ph bin trong cc ba n hng ngy phn ln cc quc gia trn th gii. Trong khi , ngi tiu dng Vit Nam li c thi quen s dng thc phm ch bin t nguyn liu ti. Tuy nhin, cng vi s pht trin ca nn kinh t, i sng ngy cng cao th qu thi gian ca mi c nhn li cng tr nn eo hp v li sng cng nghip ngy cng ph bin . Cm t Nhanh Gn Thun tin dn dn tr thnh tiu ch quan trng la chn thc phm. Thm vo , nhiu thc phm ti sng do khng c kim sot cht ch, tr nn khng an ton cho ngi tiu dng. Xut pht t nn kinh t nng nghip v c thin nhin u i, ngnh chn nui Vit Nam c rt nhiu iu kin thun li pht trin. y l ngun nguyn liu di do cho cc ngnh ch bin thc phm c th s dng. Chnh v nhng nhu cu v thun li k trn, yu cu t ra l cn phi c nhiu hn na cc nh my thc phm, nht l cc nh my ch bin cc sn phm t tht. Trong bi tiu lun ny em xin trnh by hng thit k mt quy trnh sn xut sn phm t tht - tht ln hm ng hp, nng sut 2 tn sp/ca. Chc hn trong bi tiu lun cn nhiu sai st, chng em chn thnh mong nhn c s gp ca c. Tp H Ch Minh ngy 29 thng 5 nm 2012 Nhm sinh vin thc hin

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MC LC M U ........................................................................................................................ 1 I. NGUYN LIU ...................................................................................................... 2 1. Nguyn liu chnh: ............................................................................................... 2 1. 1 Tht heo ............................................................................................................. 2 1.2. M ln............................................................................................................... 6 2. Nguyn liu ph ...................................................................................................... 6 2.1 ng ................................................................................................................ 6 2.1 Mui n .............................................................................................................. 6 2.3 Du n. ............................................................................................................... 7 2.4 Bt ngt.............................................................................................................. 8 2.5 Hnh kh. ........................................................................................................... 8 2.6 Tiu (tiu s). ..................................................................................................... 8 II. QUY TRNH SN XUT ........................................................................................ 9 1. S quy trnh cng ngh sn xut tht ln hm ng hp.................................... 9 2. Thuyt minh quy trnh sn xut tht ln hm ng hp ........................................ 10 2.1 Tan gi ............................................................................................................. 10 2.2 Lm sch .......................................................................................................... 10 2.3 Ct ming. ........................................................................................................ 10 2.4 p gia v. ....................................................................................................... 10 2.5 Vo hp ............................................................................................................ 11 2.6 Ghp m............................................................................................................ 11 2.7 Thanh trng ...................................................................................................... 12 2.8 Lm ngui ........................................................................................................ 12 2.9 Bo n .............................................................................................................. 12 2.10 In date v dn nhn ........................................................................................ 13 3. Sn phm tht heo hm ng hp .......................................................................... 13 3.1 Ch tiu cm quan ............................................................................................ 13 3.2 Ch tiu ha l .................................................................................................. 13 3.3 Ch tiu ha sinh .............................................................................................. 14 III. B TR MT BNG SN XUT ........................................................................ 15 IV. TNH TON CN BNG VT CHT ............................................................... 163

V. TNH TON THIT B .......................................................................................... 21 VI. TNH TON KINH T ......................................................................................... 31 1. Vn u t vo thit b .......................................................................................... 31 2. Chi ph nguyn vt liu ......................................................................................... 32 3. Chi ph nhn cng (CNC)...................................................................................... 32 4. Chi ph nng lng ................................................................................................ 33 4.1 in nng tiu th: ........................................................................................... 33 4.2 Lng nc tiu th: ....................................................................................... 34 5. Tnh gi thnh sn phm ....................................................................................... 35 6. nh gi bn sn phm .......................................................................................... 35 7. Xc nh vn u t cho dy chuyn .................................................................... 35

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DANH MC BNG Bng 1: Thnh phn ho hc c bn ca tht ln. .......................................................... 2 Bng 2: Thnh phn dinh dng trong phn nc v m ca tht ln (tnh cho 100g trng lng) .................................................................................................................... 2 Bng 3: Thnh phn dinh dng nhng phn ct khc nhau ca tht ln. .................. 3 Bng 4: So snh thnh phn axit amin khng thay th trong tht ln v cc loi thc phm khc ....................................................................................................................... 3 Bng 5: Ch tiu cm quan tht ln lnh ng ................................................................ 5 Bng 6: Ch tiu ho l tht ln lnh ng ..................................................................... 5 Bng 7: Ch tiu vi sinh tht ln lnh ng.................................................................... 5 Bng 8: Ch tiu cm quan ........................................................................................... 13 Bng 9: D lng kim loi nng .................................................................................. 13 Bng 10: Cc ch tiu vi sinh vt .................................................................................. 14 Bng 11: D lng thuc th y .................................................................................... 14 Bng 12: D lng Hoocmon ...................................................................................... 14 Bng 13: Cng thc phi trn ...................................................................................... 16 Bng 14: Tiu hao nguyn liu (tnh theo % nguyn liu a vo) ............................. 16 Bng 15: Nhu cu nguyn liu cho dy chuyn sn xut ............................................ 20 Bng 16: S lng bn thnh phm qua tng cng on (Nng sut tnh theo kg/h) .. 21

DANH MC HNH Hnh 1: My thi tht FD 300 .................................................................................... 10 Hnh 2: My ra hp .................................................................................................... 23 Hnh 3: Thit b ghp m............................................................................................... 24 Hnh 4: Ni thanh trng kiu ng ............................................................................... 26 Hnh 5: My dn nhn .................................................................................................. 28 Hnh 6: My in date mm trn ..................................................................................... 29

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I. NGUYN LIU 1. Nguyn liu chnh: 1. 1 Tht heo S dng tht nc mng hay nc thn lnh ng (m < 1%) cho dy chuyn sn xut lp xng; tht sn mng, sn vai cho dy chuyn sn xut tht ln hm ng hp; v thit i lc tch xng lnh ng (tht nc chim khong 85%, tht m chim khong 15%) cho dy chuyn sn xut jambon hun khi. Khi qut v nguyn liu tht ln Tht l loi thc phm cao cp, loi tht ph bin v c dng nhiu nht i vi ngi Vit. Trong tht c y cc cht dinh dng cn thit cho c th nh protein, cht bo, cht khong v cc vitamin.Bng 1: Thnh phn ho hc c bn ca tht ln.

Khong Loi tht Tht m Tht m Tht nc Thnh phn ha hc (g/100 (mg/100 g) Nc Protein Lipid Tro Ca P Fe g) 47,5 60,9 73 14,5 16,5 19 37,5 21,5 7 0,7 1,1 1 8 9 156 178 0,4 1,5 Vitamin (mg/100 g) A B1 B2 PP 2,7 -

0,01 0,53 0,2 -

- S phn b cc thnh phn dinh dng trong phn nc v m cng khc nhauBng 2: Thnh phn dinh dng trong phn nc v m ca tht ln (tnh cho 100g trng lng)

Nng Nc (g) M tht heo Nc tht heo 72 21 0,6 2,5 3 21 7 2,8 26 29 Protein (g) lng (MJ) Sat Mono

Fat

Poly 11 1

Chol 75 70

- Thnh phn dinh dng nhng phn ct khc nhau cng khc nhau2

Bng 3: Thnh phn dinh dng nhng phn ct khc nhau ca tht ln.

Nng B phn Protein (%) 15,2 16,4 13,5 HL nc (%) 53 58 49 Lipit (%) 31 25 37 Tro (%) 0,8 0,9 0,7 lng (cal/100g) 340 300 390

ct i Thn Vai Sn heo lc tht

14,6

53

32

0,8

350

Gi tr dinh dng ca tht ch yu l ngun protein. Ngi ta tm ra 30 axit amin trong t nhin , trong c 20 loi axit amin thng c tm thy trong hu ht cc protein tht. Tt c cc axit amin khng thay th u c th d dng tm thy trong m c, v vy tht c gi tr sinh hc cao.Bng 4: So snh thnh phn axit amin khng thay th trong tht ln v cc loi thc phm khc

Hm lng (% trong protein) Tht gia Acid amin Lysine Methionine Trytophane Phenylalanine Threonine Valine Leucine Isoleucine Arginine Histidine Tht ln 7,8 2,5 1, 4 4,1 5,1 5 7,5 4,9 6,4 3,2 Tht b 8,1 2,3 1,1 4 4 5,7 8,4 5,1 6,6 2,9 cm 8,4 3,4 1,3 3,8 4,7 6,9 2,3 Trng 7,2 4,1 1,5 6,3 4,9 7,3 9,2 8 6,4 2,1 Sa b 8,4 2,2 1,4 4,6 4,8 6,2 11,8 6,5 4,3 2,6

Mt nhm khc c trong tht l nhng cht cng lin quan n protein (nhng khng phi l protein thc s) nh purines, pyrimidines v nucleopeptides. y l nhng thnh phn tan nhiu trong nc, c gi tr dinh dng t nhng chng l nhng hp cht sinh ho c th tn ti trong dch tiu ha. Chng to cho tht c mu3

v mi c trng. Ngoi ra trong thnh phn ca protein c myosin, actin, tropmyozinng vai tr quan trng trong vic to nn nhng c tnh chc nng ca tht. Thnh phn tip theo l lipid. Lipid tht ch yu l triglycerides trong c cha cc axit bo no, axit bo cha no c mt ni i v cha no nhiu ni i. Nng lng do cht bo cung cp gp 2,25 ln so vi glucid, protein (tnh trn cng mt n v). Ngoi nhng gi tr ny, cht bo cn ng vai tr lm cho v ca tht nc ngon hn nh hng thm, mu sc, lm mm ming tht nc. Nc l thnh phn ha hc phong ph nht trong tht, n l thnh phn quan trng trong c th ng vt. Trong c th ng vt cn sng, nc c nhiu chc nng khc nh: cn thit cho qu trnh trao i cht, iu chnh nhit , l dung mi ha tan cc cht dinh dng Nc l cha kha trong ch bin tht, chng hn trong cc sn phm sy, xng khi s lm gim hm m, nng cc cht tan s tng, ngc li trong mt s sn phm dng gel nu thm vo mt lng nc thch hp s c mt sn phm c cu trc tt , gim c gi thnh. Ngoi ra, trong thnh phn ha hc cn c mui khong, vitamin, cc nguyn t a lng nh Ca, Fe, Mg, Nanh hng ln n tnh cht keo ca cc protein ca t bo, duy tr nhng hot ng bnh thng ca qu trnh sng v cn bng p sut thm thu trong t bo v m. Nhng yu t ny c vai tr rt quan trng trong s teo c, hi phc c trong sut qu trnh sng v trong bp c sau khi cht, chng c nh hng rt ln n tnh cht mm ca tht v kh nng gi nc ca tht. nh gi cht lng tht Tht ln ti, m bo v sinh git m, c cp ng ng quy cch, k thut Nhit tm tht t -12 -18C, m bo v sinh an ton thc phm. Tht c mu ti, sng hn tht b, khng c mi l. i vi tht ti, tht lnh ng thng c nh gi cht lng thng qua cc ch tiu cm quan, ha l, d lng kim loi nng, vi sinh vt, k sinh trng, d lng thuc th y, d lng thuc bo v thc vt, d lng hormon, c t nm. i vi tht lnh ng c nh gi theo TCVN 7047 : 20024

i vi tht ti, phng php nh gi cm quan thng s dng v nhanh, chnh xc tng i cao nu ngi thc hin c kinh nghim. Xc nh trng thi bn ngoi, ch vt ct, rn, n hi, ty, nc canh un si lngBng 5: Ch tiu cm quan tht ln lnh ng

Tn ch tiu

Yu cu - B mt kh, sch, khng dnh lng v tp cht l - Mt ct mn

Trng thi Mu sc Mi Nc luc tht - C n hica n ngn tay vo tht khng li du Mu c trng t, tht Mi c trng ca tht, khng c mi v l n trn b mt tht khi b ra Thm, trong,vng m to

Bng 6: Ch tiu ho l tht ln lnh ng

Tn ch tiu pH Phn ng nh tnh H2S Hm lng NH3 (mg/100g) trong ca nc luc tht khi phn ng vi CuSO4

Yu cu 5,5 6,2 m tnh 35

Cho php hi c

Bng 7: Ch tiu vi sinh tht ln lnh ng

Tn ch tiu Tng s vi khun hiu kh, s khun lc trong 1g tht E.coli, S vi khun trong 1g tht Samonella, s vi khun trong 25g tht B.cereus, S vi khun trong 1g tht Stapphylococus, s vi khun trong 1g tht

Yu cu 106 102 0 102 102

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Clostridium perfringens, s vi khun trong 1g tht Clostridium botulinum, S vi khun trong 1g tht

10 0

1.2. M ln S dng m bo qun lnh M sch, kh, c mu trng sa hoc hi pht hng, khng c mi i kh chu. M c vai tr tng i quan trng trong vic to nn tnh cht cm quan tt cho sn phm. Ngoi tc dng lm cho sn phm c cu trc mm mi, tng mi thm, v bo, m cn l tc nhn khng th thiu trong vic hnh thnh khi nh tng hon thin, v to cho hn hp tht xay c nht cao gip qu trnh nhi rut d dng. 2. Nguyn liu ph 2.1 ng S dng ng saccaroza (ng knh trng) - Vai tr: C tc dng to v ngt cho sn phm, lm du mui v lm mm tht To mi trng ln men lactic Gp phn to p sut thm thu. Mt khc v ng c kh nng lin kt vi nc nn lm sn phm c hm lng nc cao, cu trc sn phm s tr nn mm du hn. - Yu cu (tnh theo % hm lng cht kh): Hm lng saccaroza > 99,62, tinh th mu trng ng nht, ha tan hon ton trong nc cho dung dch trong sut, v ngt c trng. m < 0,07 Hm lng ng kh < 0,1 Hm lng tro < 0,07 2.1 Mui n Thng dng NaCl - Vai tr:6

C tc dng trch ly protein, lm tng tan protein, gp phn tng lin kt cc phn ca tht, to thun li cho vic hnh thnh nh tng bn vi cht bo, tng pH ca h nh tng, tng kh nng gi nc, do lm gim tn tht trong qu trnh nu v tng cht lng, cu trc sn phm. Mui c nh hng quan trng n hng v sn phm. Do kh nng khng khun liu lng cao nn mui c th tc ng n cc loi vi sinh vt gy bnh v gy thi, lm tng tnh bn vng sn phm. Vai tr khc ca mui trong ch bin tht l gim s thot dch ca sn phm x l nhit c ng gi chn khng. - Yu cu: Tinh th mu trng ng nht, sch, kh, ha tan hon ton trong nc cho dung dch trong sut. tp cht 99% - Vai tr: L cht iu v (E 621) c kh nng tng khu v, tng cm gic ngon ming - Yu cu: tinh th mu trng ng nht, ng nh, ha tan hon ton trong nc cho dung dch trong sut, v ngt l c trng. 2.5 Hnh kh. - Vai tr: To mi v c trng cho sn phm. - Yu cu: Hnh a vo sn xut l hnh c gi, khng b thi mc. Trc khi a vo s dng phi loi b v ngoi, cung v r 2.6 Tiu (tiu s). - Vai tr: Tiu l mt loi gia v. Ht tiu c v cay nng, mi thm c bit. Khi tiu c mt trong thc phm, n s lm tng thm hng v, to s hp dn v trong ht tiu c cha 2% tinh du m trong ch yu l pirerin. Tiu cn c tc dng tiu ha, gii c, khng khun v mt s tnh nng khc.

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II. QUY TRNH SN XUT 1. S quy trnh cng ngh sn xut tht ln hm ng hp Tht ln lnh ng

Tan gi

Lm sch Ct ming p gia v

Gia v

Hp sch

Vo hp

Ghp m

Thanh trng

Lm ngui Bo n

Dn nhn Sn phm

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2. Thuyt minh quy trnh sn xut tht ln hm ng hp 2.1 Tan gi - Tin hnh: Nguyn liu c tan gi trong phng tan gi c nhit 15 16C, m khng kh 60 70%. Thi gian tan gi khong 8 12h. 2.2 Lm sch - Tin hnh: nguyn liu c lc sch gn, loi b nhng ch bm gip, t mu bng phng php th cng. 2.3 Ct ming. - Tin hnh: tht sau khi lm sch c cho vo my ct thi, ct thnh nhng ming nh. Kch thc ming tht khong 50x50x20 (mm). - Thit b: Chn my thi ming tht ca cng ty Hankook Fujee Hn Quc, k hiu FD 300.

Hnh 1: My thi tht FD 300

2.4 p gia v. - Cng thc phi trn: (100kg) Tht sn mng: 91,5kg Du n Mui n Hnh kh ng M chnh : 5kg : 1 kg : 2 kg

Tiu (tiu s): 0,2kg : 0,2kg : 0,1kg10

- Mc ch: to hng v v mu sc c trng cho sn phm. ng thi qu trnh p phn no c qu trnh ln men lactic iu chnh v v to mu cho sn phm. - Tin hnh: tht sau khi thi ming c p vi mui, ng, m chnh, hnh kh. 2.5 Vo hp - Tin hnh: xp tht sau khi p vo hp. Hp lm bng st ty c trng thic hoc vecni. y chn hp s 3 c trng lng tnh l 240g. - Yu cu: hp st ng sn phm phi c ra sch, tht phi nm gn trong hp, khng dnh ln thnh hp, khi bn sn phm trong hp cch mp hp khong 1cm. - Cch tin hnh:

Tin hnh nh lng bng tay trn bng chuyn Khi lng cho vo mi hp l 240 (5)gam Vic cho sn phm vo hp phi c thc hin nhit thng. Cng nhn cng on ny phi thc hin y cc nguyn tc v v sinh v

cc yu cu k thut ph bin trc khi vo sn xut. Cng nhn phi c y trang phc bo h lao ng gn gng, sch s, khng mang trang sc. Cng nhn lm vic phi ra tay bng thuc st trng trc khi vo sn xut hay tr li sn xut sau khi ra ngoi v bt c l do g. Trong thi gian lm vic cng phi ra tay mi 20 pht ti 1 gi. Cng nhn phi tuyt i khng c bnh truyn nhim v thc hin tt cc yu cu v sinh c nhn. Cc dng c s dng phi c lm v sinh thng xuyn theo lch. 2.6 Ghp m - Mc ch: lm hp kn hon ton, to iu kin cho qu trnh thanh trng, trnh s xm nhp ca khng kh v vi sinh vt t bn ngoi. - Tin hnh: Cc lon v np s c cc h thng bng ti a vo trong thit b ghp m chn khng. Ti y np s c bng ti a vo mt h thng mm nm ngay bn di. Khi bn p c tc ng th trc mm s c nng ln a hp n gn np ng thi van chn khng m ra ht chn khng bn trong hp n mt p sut c ci t trc, khi p sut chn khng to ra bn trong hp gi cht np vo cc m ghp. Sau khi np c ghp kn th ngng tc ng ln bn p, trc mm s c h xung v hp c bng ti a ra ngoi. Yu cu mi ghp phi kn, u, hp khng b mo.11

2.7 Thanh trng - Mc ch: Tiu dit vi sinh vt Tiu dit cc enzyme hot ng Ko di thi gian bo qun sn phm - Tin hnh: hp sau khi ghp np theo mng trt xung b n hp. Ti y hp t ng vo gi n hp v c monoray cu vo ni thanh trng. Ch tit trng l:

Thi gian gia nhit, gi nhit v lm ngui ln lt l 20-60-20 pht Nhit thanh trng l 121oC - Yu cu: hp sau khi ghp m n khi thanh trng khng c qu 30 pht. Hp sau khi tit trng khng b phng, mo, tiu dit ton b cc vi sinh vt, tht mm nhng khng b nt. 2.8 Lm ngui - Mc ch: h thp nhit ca ni thanh trng c s dng p sut i khng trnh gy phng hp, to iu kin thun li cho qu trnh ly gi hp ra khi ni. - Tin hnh: lm ngui hp ngay trong ni thanh trng bng cch bm trc tip nc lnh p sut cao vo trong ni hoc dng khng kh nn to p sut i khng. Sau dng nc nc lnh lm ngui. Khi nhit t 50 60C th a hp ra ngoi. 2.9 Bo n - Mc ch: kim tra ch thanh trng, pht hin nhng hin tng bt thng ca hp nh h, chy nc, phng do tc nhn vt l, do vi sinh vt. - Tin hnh: hp c xp vo kho, c th bi du chng r (du s dng l du thc vt tinh luyn, khng dung du cng nghip). Khng xp hp trc tip di nn t hoc xp st tng. Gia cc dy phi c li i c th kim tra v tho d. nh k o v tr cc hp trong cc dy. Thi gian bo n l 2 tun, nhit 37C. Lng hp em bo n l 5%o ca tt c cc l sn xut. Trong thi gian bo n nu c bt k hin tng khng bnh thng no i vi d ch 1 hp th xem li c l hng v tm nguyn nhn, khng c dn nhn v xut xng.12

2.10 In date v dn nhn - Mc ch: hon thin - Tin hnh : Lon sau khi bo n s c a qua thit b in date. Ti y mt t nhn thy hnh nh lon lp tc b phn in phun s hot ng. Tip , lon c bng ti chuyn n b phn dn nhn. Ti b phn ny lon c c cu mm xoay trn nng ln cun nhn bm vo thn hp, sau lon c h xung bng ti v i ra ngoi. - Trn nhn ghi r: C quan, x nghip sn xut, biu tng ca cng ty Ngy sn xut Hn s dng Thnh phn nguyn liu S ng k cht lng 3. Sn phm tht heo hm ng hp Yu cu v sn phm l khng c hin tng phng hp, mu m p, cht lng sn phm c m bo: tht mm, khng nt, c hng v c trng ca sn phm, v va phi, khng mn. 3.1 Ch tiu cm quanBng 8: Ch tiu cm quan

Tn ch tiu 1. Trng thi 2. Mu sc 3. Mi v

Yu cu c trng cho tng loi sn phm c trng cho tng loi sn phm c trng cho tng loi sn phm, khng c mi l, c mi thm ca gia v

- Yu cu bn trong ca hp sau khi m: i vi loi bao b khng trng vecni, mt trong cho php c vt en nh. i vi loi bao b trng vecni, mt trong khng c c bt, vt nt, lp vecni ph u, khng b bong. 3.2 Ch tiu ha lBng 9: D lng kim loi nng

Tn ch tiu 1. Ch

Gii hn ti a (mg/kg) 0,5

13

2. Cadimi 3. Thic 4. Thu ngn 3.3 Ch tiu ha sinh

0,05 250 0,03

Bng 10: Cc ch tiu vi sinh vt

Tn ch tiu 1g sn phm E. Coli, s vi khun trong 1g sn phm trong 1g sn phm

Gii hn ti a

Tng s VSV hiu kh, s khun lc trong 0

0

Clostridium perfringens, s vi khun 0 Staphylococus aureus, s vi khun trong 0 1g sn phm Clostridium Botulinum, s vi khun trong 0 1g sn phmBng 11: D lng thuc th y

Tn ch tiu 1. H tetraxyclin 2. H cloramphenicol Tn ch tiu 1. Dietylstylbestrol 2. Testosterol 3. Estadiol - c t nm mc

Gii hn ti a (mg/kg) 0,1 Khng pht hinBng 12: D lng Hoocmon

Gii hn ti a (mg/kg) 0 0,015 0,0005

Hm lng aflatoxin B 1 ca tht hp khng ln hn 0.005 mg/kg.

14

III. B TR MT BNG SN XUT S b tr mt bng sn sutNh v sinh Phng tit trng Khu lm ngui v bo n

Bn nc Clo Thay nam Thay nPhng k thut

Khu vc hnh langChuyn ng hp ghp m Phng hon tt My in date, dn nhn.

Phng kim tra nguyn liu.

Phng r ng

Phng ra v ct tht .

Phng p nguyn liu

Phng ra hp Phng cha hp

Kho bo qun sn phm

15

IV. TNH TON CN BNG VT CHT Cng thc tnh khi lng nguyn liu cn thit phc v cho sn xut:( ) ( )

(1)

Trong : T: Nguyn liu cn thit sn xut (kg) S: Lng sn phm (kg) x1x2 ,xn hao ph nguyn liu cc cng on 1, 2, , n ( tnh theo % so vi

lng nguyn liu vo cng on ) Cng thc tnh khi lng hao ht nguyn liu sau mi cng on:( )

(2)

Trong : T: Nguyn liu cn thit sn xut (kg) S: Lng sn phm (kg) x1x2 ,xn hao ph nguyn liu cc cng on 1, 2, , n ( tnh theo % so vi

lng nguyn liu vo cng on )Bng 13: Cng thc phi trn

STT 1 2 3 4 5 6 7

Thnh phn nguyn liu Tht sn mng Du n Mui Hnh kh Tiu (tiu s) ng M chnh Tng s

Hm lng (%) 91,5 5 1 2 0,2 0,2 0,1 100

Bng 14: Tiu hao nguyn liu (tnh theo % nguyn liu a vo)

STT 1 2 3 4 5

Cc cng on Bo qun nguyn liu Tan gi Lm sch Ct ming p gia v

T l tiu hao(%) 2 1 1 1 1

16

6 7 8 Tnh ton sn xut 1. Tht sn mng

Vo hp Bc v hnh Thi lt

1 5 1

Da vo bng cng thc phi ch, ta c khi lng tht sn mng c trong 2 tn sn phm l: 91,5% 2000 = 1830 (kg) Ta c bng hao ph tht sau mi cng on l (tnh theo cng thc 1): Cng on Tan gi Lm sch Ct ming p gia v Vo hp Sn phm Hao ph (%) 1 1 1 1 1 Khi lng vo (kg/ca) 1924,31 1905,07 1886,02 1867,16 1848,48 1830 Khi lng vo (kg/h) 240,54 238,13 235,75 233,39 231,06 228,75 Hao ht ng.l (kg/ca) 19,24 19,05 18,86 18,67 18,48

Khi lng tht sn mng cn thit sn xut trong 1ca l: 1924,31 (kg) Khi lng tht sn mng cn thit sn xut trong 1 gi l: 240,54(kg) Khi lng tht sn mng cn thit sn xut trong 1 nm l: 1924,31 309 = 594611,79 (kg) 2. Du n Da vo bng cng thc phi ch, ta c khi lng du n c trong 2 tn sn phm l: 5% 2000 = 100 (kg) Ta c bng hao ph du n sau mi cng on l(tnh theo cng thc 1): Cng on Bo qun nguyn liu p gia v Vo hp Hao ph (%) 2 1 1 Khi lng vo (kg/ca) 104,11 102,03 101,0117

Khi lng vo (kg/h) 13,01 12,75 12,63

Hao

ht

ng.l (kg/ca) 2,08 1,02 1,01

Sn phm

100

12,50

Khi lng du n cn thit sn xut trong 1 ca l: 104,11 (kg) Khi lng du n cn thit sn xut trong 1 gi l: 13,01(kg) Khi lng du n thit sn xut trong 1 nm l: 32139,09 (kg) 3. Mui Da vo bng cng thc phi ch, ta c khi lng mui c trong 2 tn sn phm l: 1% 2000 = 20 (kg) Cng on Bo qun nguyn liu p gia v Vo hp Sn phm Khi lng vo (kg/ca) 20,82 20,41 20,20 20,00 Khi lng vo (kg/h) 2,60 2,55 2,53 2,50 Ta c bng hao ph mui sau mi cng on l: Hao ph (%) 2 1 1 Hao 0,42 0,2 0,20 ht

ng.l (kg/ca)

Khi lng mui cn thit sn xut trong 1 ca l: 20,82 (kg) Khi lng mui cn thit sn xut trong 1 gi l: 2,60 (kg) Khi lng cn thit sn xut trong 1 nm l: 20,82 309 = 6433,38 (kg) 4. ng Da vo bng cng thc phi ch, ta c khi lng ng c trong 2 tn sn phm l: 0,2% 2000 = 4 (kg) Ta c bng hao ph ng sau mi cng on l (tnh theo cng thc 1): Cng on Bo qun nguyn liu p gia v Vo hp Sn phm Khi lng vo (kg/ca) 4,16 4,08 4,04 4 Khi lng vo (kg/h) 0,52 0,51 0,51 0,5

Hao ph (%) 2 1 1

Hao

ht

ng.l (kg/ca) 0,08 0,04 0,04

18

Khi lng ng cn thit sn xut trong 1 ca l: 4,16 (kg) Khi lng ng cn thit sn xut trong 1 gi l: 0,52 (kg) Khi lng cn thit sn xut trong 1 nm l: 4,16 309 = 1285,44 (kg) 5. M chnh Da vo bng cng thc phi ch, ta c khi lng m chnh c trong 2tn sn phm l: 0,1% 2000 = 2(kg) Ta c bng hao ph m chnh sau mi cng on l: Cng on Bo qun nguyn liu p gia v Vo hp Sn phm Hao ph (%) 2 1 1 Khi lng vo (kg/ca) 2,08 2,04 2,02 2 Khi lng vo (kg/h) 0,26 0,26 0,25 0,25 Hao ht

ng.l (kg/ca) 0,04 0,02 0,02

Khi lng m chnh cn thit sn xut trong 1 ca l: 2,08 (kg) Khi lng m chnh cn thit sn xut trong 1 gi l: 0,26 (kg) Khi lng cn thit sn xut trong 1 nm l: 2,08 309 = 642,72 (kg) 6. Tiu (tiu s) Da vo bng cng thc phi ch, ta c khi lng nc tiu c trong 2 tn sn phm l: 0,2% 2000 = 4 (kg) Ta c bng hao ph nc tiu sau mi cng on l(tnh theo cng thc 1): Cng on Bo qun nguyn liu p gia v Vo hp Sn phm Hao ph (%) 2 1 1 Khi lng vo (kg/ca) 4,16 4,08 4,04 4 Khi lng vo (kg/h) 0,52 0,51 0,51 0,50 Hao ht

ng.l (kg/ca) 0,08 0,04 0,04

Khi lng tiu s cn thit sn xut trong 1 ca l: 4,16 (kg) Khi lng tiu s cn thit sn xut trong 1 gi l: 0,52 (kg) Khi lng cn thit sn xut trong 1 nm l: 4,16 309 = 1285,44 (kg)19

7. Hnh kh Da vo bng cng thc phi ch, ta c khi lng hnh kh c trong 2 tn sn phm l: 2% 2000 = 40 (kg) Ta c bng hao ph hnh kh sau mi cng on l(tnh theo cng thc 1): Cng on Bo qun nguyn liu Bc v Thi lt p gia v Vo hp Sn phm Hao ph (%) 2 5 1 1 1 Khi lng vo (kg/ca) 42,06 41,64 41,22 40,81 40,40 40,00 Khi lng vo (kg/h) 5,26 5,21 5,15 5,10 5,05 5,00 Hao ht

ng.l (kg/ca) 0,42 0,42 0,41 0,41 0,40

Khi lng hnh kh cn thit sn xut trong 1 ca l: 42,06 (kg) Khi lng hnh kh cn thit sn xut trong 1 gi l: 5,26 (kg) Khi lng hnh kh cn thit sn xut trong 1 nm l:12996,54 (kg)Bng 15: Nhu cu nguyn liu cho dy chuyn sn xut

STT 1 2 3 4 5 6 7

Thnh phn nguyn liu Tht sn mng Du n Mui Hnh kh Tiu s ng M chnh Tng s

Khi lng vo (kg/ca) 1924,31 104,11 20,82 42,06 4,16 4,16 2,08 2101,7

Khi lng vo (kg/h) 240,54 13,01 2,60 5,26 0,52 0,52 0,26 262,71

Khi lng vo (kg/nm) 594611,79 32139,09 6433,38 12996,54 1285,44 1285,44 642,72 649394,4

20

Bng 16: S lng bn thnh phm qua tng cng on (Nng sut tnh theo kg/h)

Nguyn liu

Tht sn Du Mui ng 2,60 2,55 2,53 2,50 0,52 0,51 0,51 0,5

Ht tiu 0,52 0,51 0,51 0,50

Hnh

M Tng 22,17 240,54 243,34 240,9 255,07 252,54 250

kh chnh 5,26 5,21 5,15 5,10 5,05 5,00 0,26 0,26 0,25 0,25

n B.qun nguyn 13,01 Cng on mng liu Tan 240,54 gi Lm sch Ct ming p gia v Vo hp Sn phm 238,13 235,75 233,39 231,06 228,75 12,75 12,63 12,50

V. TNH TON THIT B 1. Bn lm sch - Lng tht cn lm sch l: 243,34 (kg/h) - nh lng cho mi cng nhn lm sch nng sut 70 (kg/h). - S cng nhn cn s dng lm sch tht l: n = 234,32/70 = 3,47 - V chn 2 bn lm sch c kch thc D x R x C = 1800 x 900 x 850 (mm), vi 4 b dao tht (dao inox, tht nha). B tr 4 cng nhn lm vic. 2. My ct thi - Yu cu ct ming tht kch thc khong 50x50x20 mm. - Chn my thi ming tht ca cng ty Hankook Fujee Hn Quc, k hiu FD 300. - c tnh: Kch thc: D x R x C = 1500 x 650 x 1300 (mm) Tc quay ca li dao: ti a 1420 v/ph ng c: 0,75kW Nng sut my: 2000 (kg/h) Chiu di sn phm: ln nht 300 mm Chiu rng sn phm ln nht: 5 80 mm Chiu dy sn phm: ln nht 30 mm21

Trng lng my: 300kg Nng sut dy chuyn l: 240,9 (kg/h) - Tnh s thit b: S thit b cn l: n = 240,9/2000 = 0,12 - Vy chn 1 my ct thi, 1 cng nhn ph trch vn hnh my. 3. p gia v. - Chn thit b p gia v l thng nha. - c tnh: Kch thc: D x R x C = 600 x 400 x 850 (mm) Th tch 200 lt. Nng sut dy chuyn l: 255,07 (kg/h). - Tnh s thit b: Coi nng sut ca thit b khong: 140 x 0,9 = 126 (kg) Thi gian p tht: 1(h) Nng sut thit b l: 126/1 = 126 (kg/h) S thit b cn l: n = 255,07/126 = 2,1 - Vy chn s thng l 2 thng, 1 cng nhn i p tht. 4. Bng chuyn xp hp - Bng chuyn xp hp chn loi 13H3 2, do Lin X sn xut -c tnh k thut: Tc chuyn hp 0,36 m/s. ng c in Kiu A042 6. Cng sut 1,7 kW Tc quay 930 vng/pht Bng ti c th vn chuyn nhiu loi hp. Kch thc bng ti k c bn lm vic Rng 2400 mm. Cao 1230 mm. Khi lng bn thnh phm cn xp hp l: 252,54 (kg/h) Khi lng tnh ca hp l: 240g/hp - Tnh s thit b:22

Nng sut ca 1 cng nhn l: 100 (hp/h) Nng sut dy chuyn l: 252,54 : 0,24 = 1052,25 (hp/h) S cng nhn cn cho cng on ny l: n = 1 0 5 2 , 2 5 / 1 0 0 = 1 0 - Vy b tr 12 cng nhn lm trn dy chuyn xp hp. Chn chiu di bng chuyn cng nhn lm vic: S cng nhn Chiu di bng (mm) Trng lng bng 6 4080 714 8 5280 820 10 6480 927 12 7680 1033 18 11280 1139

Vy b tr 12 cng nhn ng 2 bn mt bng chuyn di 7680 mm, nng 1033 kg. 5. My ra hp Chn my ra hp m M do Lin X sn xut.

Hnh 2: My ra hp

- c tnh k thut: Nng sut: 120 (hp/pht) Lng nc tiu tn: 2,5 (m3/h) Ra cc loi hp: 3, 4, 5, 6, 7, 8, 9, 12, 16, 17, 18, 19, 22, 23, 31 Thi gian hp i trong my: 6,5 (giy) Cng sut ng c in: 3,2 kW Kch thc: 2000x1270x1375 (mm) - Tnh s thit b:23

S hp cn ra: 1052,25 (hp/h) Nng sut ca my: 120 (hp/pht) = 120x60 = 7200 (hp/h) S thit b cn l: 1052,25 : 7200 = 0,15 - Vy chn 1 thit b ra hp, 2 cng nhn vn hnh 6. Mm n hp c sn xut Nga. - Thng s k thut: Din tch cha hp trn mm: 100 230 hp ng knh mm: 1300 mm ng c in: Cng sut: 0,27 kW Tc quay: 1400 vng/pht Kch thc my: 1390x1320x1000 mm 7. Thit b ghp m Chn my ghp m chn khng t ng mt u ghp nhn hiu Canco06, ca Trung Quc sn xut

Hnh 3: Thit b ghp m

- c tnh k thut: ng knh hp: 85 105 mm24

Chiu cao: 35 133 mm Cng sut: 50 hp/pht in nng: 15 Kw; 3 pha; 380 V Trng lng my: 1050 kg Kch thc my: 1210 x 1450 x 1900 mm - Tnh s thit b: S hp cn ghp np l: 1052,25 (hp/h) Nng sut ca my l: 50 (hp/pht) = 50 x 60 = 3000 (hp/h) S my ghp m cn chn l: n = 1 0 5 2 , 2 5 / 3 0 0 0 = 0 , 3 5 - Vy chn s my ghp m l 1 my v c 1 cng nhn vn hnh 8. B n hp Chn b n hp vo gi ca ni thanh trng do Lin X sn xut. - Thng s k thut: Th tch b: 2,5 (m3) S lng gi: 2 Chiu cao gi: 500 mm ng knh gi: 700 mm Kch thc b: 2500x1310x1128 - Cc gi c lm y v ly ra lin tc sao cho m bo yu cu cng ngh l sau khi ghp m khng c qu 30 pht. Nng sut ca b l nng sut ca cc cng on trc. Ch cn chn 1 b vi 2 gi lm vic thay phin nhau. 9. Thit b thanh trng Chn thit b: ni thanh trng kiu ng (trang 517) do Lin X sn xut.

25

Hnh 4: Ni thanh trng kiu ng

- c tnh k thut: ng knh: 1000 (mm) S gi cha trong ni: 2 p sut hi lm vic: 1,6 (kg/cm2) ng knh gi: 700 (mm) Chiu dy v: 6 (mm) Kch thc ni: 2070x1480x2050 mm Khi lng ni:842 (kg) - Tnh s thit b Chn ng knh gi: 700 (mm) Chiu cao gi: 500 (mm) ng knh ngoi ca hp s 3 l: 102,3 (mm) Chiu cao ngoi ca hp s 3 l: 38,8 (mm) Thi gian mt chu k lm vic: T = T1 + A + B + C + T2 Trong : T1, T2 l thi gian thao tc cho gi vo, y np v thi gian m np ly gi ra. T1= T2 = 10 (pht). A, B, C l thi gian nng nhit, gi nhit, h nhit ca qu trnh thanh trng, A = 20, B = 60, C = 20. Vy T = 10 + 20 + 60 + 20 + 10 = 120 (pht)26

Nng sut ni thanh trng tnh theo cng thc: G = 6 0 . n / t Trong : n l s hp xp trong ni thanh trng t l thi gian lm vic ca mi chu k Tnh s hp xp trong mt gi theo cng thc: n0 = 0,785.(d1/d2)2.a.k Trong : n0 : s hp xp trong gi d1: ng knh gi d2: ng knh hp a: t s chiu cao ca gi/chiu cao ca hp k: h s in y. Thay s ta c s hp xp vo1 gi: n0 = 331,5 hp S hp xp trong ni thanh trng: n = 2 x n0 = 2x 331,5 = 663(hp) Nng sut ni thanh trng: G = 6 0 . 6 6 3 / 1 2 0 = 331, 5 (hp/h) Nng sut dy chuyn l: 1052,25 (hp/h) S thit b thanh trng l: n =1 0 5 2 , 2 5 / 3 3 1 , 5 = 3,17 Do yu cu cng ngh sau khi ghp m khng c qu 30 pht. V vy s ni thanh trng cn l: 120/30 = 4 - Vy chn 4 thit b thanh trng, 2 cng nhn vn hnh - S hp thc t trong 1 m thanh trng l: 6 6 3 . 3 , 1 7 / 4 = 525 (hp/m) 10. Trc cu S dng trc cu do Nga sn xut c nhn hiu T1 611. - Thng s k thut sau: Kh nng ca trc cu: 1000 (kg) Chiu cao nng ti a 4000 (mm) Vn tc ng di: 20 (m/pht) Bn knh ti thiu ca on ng cong: 1000 (mm) Cng sut ng c chuyn ng nng: 1,7 (kW) - Tnh s thit b: Khi lng 1 hp: 240 + 75 = 315 (g) Khi lng mt gi: 3 1 4 . 3 1 5 / 1 0 0 0 0 = 98, 91 (kg) Khi lng gi khi khng c hp: 50 (kg)27

Khi lng gi khi c hp: 50 + 98,91 = 148,91 (kg) S thit b cn dng l: 148,91 : 1000 = 0,15 - Vy chn 1 trc cu, 1 cng nhn vn hnh 11. My dn nhn S dng my dn nhn Ecodic 605 ca Trung Quc. - Thng s k thut: Tc : 180 hp/pht Kch thc hp: ng knh 54 157 mm; Chiu cao hp 38 117 mm ng c in: 1 kW Kch thc my: 2660x750x1450 mm Trng lng my: 770 kg My dung dn nhn hp bng 1 nhn qun quanh hp

Hnh 5: My dn nhn

- Tnh s thit b: S hp cn dn nhn l: 1052,25 (hp/h) Nng sut ca my l: 180 (hp/pht) = 180 x 60 = 108000 (hp/h) S my dn nhn cn chn l: n =1052,25/108000=0,1 - Vy chn s my dn nhn l 1 my v c 1 cng nhn vn hnh 12. My in date

28

Hnh 6: My in date mm trn

S dng my in date mm trn DYM3 ca Trung Quc. - Thng s k thut: in p: 220 V Cng sut: 55 W Tc : 60 ln/pht Kch thc my: 580x310x480 mm Trng lng my: 30 kg - Tnh s thit b: S hp cn in date l: 1052,25 (hp/h) Nng sut ca my l: 60 (hp/pht) = 60 x 60 = 3600 (hp/h) S my ghp m cn chn l: n = 1052,25/3600= 0,29 - Vy chn s my in date l 1 my v c 1 cng nhn vn hnh

29

BNG TNG HP THIT B V CC THNG S THIT B CA DY CHUYN SN XUT THT LN HM NG HP NNG SUT 2000KG SN PHM /CA Thng s k thut STT 1 2 3 4 5 6 7 8 9 10 11 12 Tn thit b Bn lm sch My ct thi Thng nha Bng ti xp hp Mm n hp My ra hp Thit b ghp m chn khng B n hp Gi xp hp Thit b thanh trng My dn nhn My in date Kch thc (mm) 1800x900x850 1500 x 650 x 1300 600 x 400 x 850 7680x2400x1400 1390x1320x1000 2000x1270x1375 1210x1450x1900 2500x1310x1128 DxH =700x500 2070x1480x2050 2660x750x1450 580x310x480 345,97 (hp/h) 180 (hp/pht) 60 (hp/pht) 120 (hp/pht) 3000 (hp/h) 2000 (kg/h) 10,5 (kg/h) 1052,25 (hp/h) Nng sut S.lng 2 1 2 1 1 1 1 1 2 4 1 1

30

VI. TNH TON KINH T 1. Vn u t vo thit b ITB = ITB1 + ITB2 + ITB3 + ITB4 - Trong : ITB1: Chi ph mua thit b ITB2: Chi ph vn chuyn, lp t thit b, ITB2 = 7% ITB1 ITB3: Chi ph o lng, kim tra, hiu chnh, ITB3 = 2% ITB1 ITB2: Chi ph cho thit b ph tr sn xut, ITB4 = 5% ITB1 - Vn u t vo thit b chnh: ITB1 n gi Thit b Dy chuyn Tht ln Bn lm sch My ct tht hm Bng ti xp hp My ghp m Ni thanh trng Thit b ra hp My dn nhn M y in date Tng s => ITB = 405 x (1+0,07+0,02+0,05) = 461,7 triu VN (triu VN) ( 106 5 VN) 45 30 160 100 25 20 15 lng 2 1 1 1 1 1 1 1 S Thnh tin (triu VN) 10 45 ( 106 VN) 30 160 100 25 20 15 405

31

2. Chi ph nguyn vt liu Chi ph nguyn vt liu bao gm chi ph nguyn liu chnh, nguyn liu ph, bao b nhn mc: CNVL = CNLC + CNLP + CBB - Trong : CNLC : Chi ph mua nguyn liu chnh (55tr/tn tht) CNLP : Chi ph mua nguyn liu ph, CNLP = 5 % CNLC CBB : Chi ph bao b nhn mc, CBB = 1 % CNLC n gi S lng Thnh tin

BNG CHI PH CHO NGUYN VT LIU CHNH TRONG 1 NM Tn nguyn liu Tht ln tht ln hm

55 (106 VN/tn) - Dy chuyn sn xut tht ln hm ng hp:

(tn/nm) 594,612

32703,66 (106 VN)

CNVL = 32703,66 x (1 + 0,05 + 0,01) = 34665,8796 (triu VN) 3. Chi ph nhn cng (CNC) - S lng cng nhn vn hnh dy chuyn :26 4 cng nhn bn lm sch 1 cng nhn vn hnh my ct thi 1 cng nhn p gia v 12 cng nhn chuyn xp hp 2 cng nhn vn hnh my ra hp 1 cng nhn vn hnh my ghp m 2 cng nhn vn hnh thit b thanh trng 1 cng nhn trc cu 2 cng nhn dn nhn v in date - S lng cng nhn cc v tr khc: 13 3 cng nhn kho nguyn liu 3 cng nhn kho sn phm 2 cng nhn phng k thut KCS 3 cng nhn phn xng ni hi, c in32

2 cng nhn x l cp thot nc - Tin lng trung bnh 2 tr/cng nhn/thng - Chi ph cho tin lng trong 1 thng : CL = 2tr x (26 + 13) = 78 triu VN - Cc chi ph bo him x hi v bo him y t chim 19% tin lng CK = 78 . 0,19 = 14,82 tr VN - Chi ph nhn cng trong 1 thng: CNC = 78 + 14,82 = 92,82 triu VN => Chi ph bnh qun cng nhn trong 1 nm: CNC = 92,82 . 12 = 1113,84 triu VN 4. Chi ph nng lng 4.1 in nng tiu th: - Da trn cng sut ca thit b chn, ta tnh c lng in nng tiu th: My ct thi: 0,75kW . 8 = 6 kWh Bng chuyn xp hp: 1,7kW . 8 = 13,6 kWh My ra hp: 3,2 kW .8 = 25,6 kWh Mm n hp: 0,27 kW .8 = 2,16 kWh Thit b ghp m: 15 kW . 8 = 120 kWh Trc cu: 1,7 kW . 8 = 13,6 kWh My dn nhn: 1kW . 8 = 8 kWh My in date: 55W . 8 = 0,44 kWh in nng tiu th do chiu sng: STT 1 2 3 7 8 Phng thp sng Phng tan gi Khu phc v cng nhn Phng nguyn liu ph KV.CB tht ln hm Bo n S n 4 4 4 22 16

=> cng sut 0,1kW . 50. 8 = 40 kWh in nng tiu th cho ni hi: 50kW . 8 = 400 kWh - Tng lng in nng tiu th: 629,4 kWh - Chi ph in nng/ ca : 629,4 kWh . 1,500 VN/ kWh = 0,944 tr VN33

4.2 Lng nc tiu th: 4.2.1 Lng nc tiu th trong phn xng sn xut chnh: - nh mc: Lm sch nguyn liu: 5kg nc/ 1 kg nguyn liu Ra bn, v sinh thit b v dng c: 4000 kg nc/dy chuyn sn xut Khi lng ring ca nc: d = 1000kg/m3 BNG TIU HAO NC CHO PHN XNG SN XUT CHNH Dy Cng on Tiu hao (kg nc/m) 1924,31kg ngliu tiu hao(kg nc/ca) chuyn Tht ln Lm sch nguyn liu V sinh thit b, dng c hm Thit b ra hp Thanh trng Tng s 4000 500 9621 4000 4000 2000 19621

Vy tng lng nc phn xng sn xut chnh dng trong 1 ca l: 34,276 (m3/ca) 4.2.2 Lng nc dng cho sinh hot: Mi cng nhn cn 0,06 m3/ngi/ca Tng s cng nhn tnh cho 1 ca sn xut l: ngi Lng nc tiu th cho 1 ca: 0,06 39 = 2, 34 (m3/ca) 4.2.3 Lng nc dng cho ni hi: C 1 kg hi cn 1 kg nc. Lng hi s dng lc cao nht l 500 (kg/h) Lng nc dng trong 1 ca: 500 8 = 4000 (kg/ca) = 4 (m3/ca) Lng nc s dng/ ca : 40,616 m3/ca Chi ph nc/ ca: 40,616 m3/ca . 5,000 VN/m3 = 0,2 tr VN - Vy chi ph nng lng cho chuyn sn xut/ ca = 0,944 + 0,2 = 1,144 tr VN - Mt ngy lm vic 2 ca, 6 ngy/tun nn chi ph 1 nm l: CNL = 1,144 . 2. 6. 4. 12 = 658,944 tr VN34

5. Tnh gi thnh sn phm Gi thnh ca sn phm to ra c da trn tng chi ph sn xut v lng sn phm to ra. Tng chi ph: C = CTT + Ckhc Trong : - Chi ph trc tip: CTT = CNVL + CNC + CNL = 34665,8796 + 1113,84 + 658,944 = 36438,6638 tr VN - Chi ph khc: chi ph cho qung co, pht sinh trong qu trnh phn phi tiu th sn phm ly bng 10% chi ph trc tip: Ckhc = 0,1.CTT = 3643,86 tr VN => C = CTT + Ckhc = 40082,5 tr VN - Nng sut: G = 2000kg/ca hay 2,6.106 hp/nm loi 240g/hp Gi thnh: C/G = 15416 VN 6. nh gi bn sn phm Cn c vo gi thnh sn xut, iu kin kinh t k thut v thu nhp ca ngi dn, nh gi bn sn phm nh sau: Tht ln hm ng hp: 18500 (ng/hp 240g) 7. Xc nh vn u t cho dy chuyn - S vn lu ng ti thiu: IL= ( CTT + Ckhc)/ n vi n l s vng quay ca vn lu ng/ nm Chn n = 5 vng => IL = 8016,5 tr VN - Vn u t ban u cho quy trnh sn xut l: I = IC + IL = 461,7 + 8016,5 = 8478,2 tr VN

35