1. CHNG I: H THNG IU HA KHNG KH Gio vin hng dn: Trn Th M Linh Ngy thc tp: 18/3/2014 a im kho st: Trung Tm Hc Liu i hc Bch khoa Nng Ni dung bo co thc tp. S dng h my lm lnh nc cng nghip Water chiller Cc b phn chnh: Cm my lnh Water Chiller H thng ng ng nc lnh v bm nc lnh H thng dn lnh AHU, FCU H thng ng gi thi qua phng cn iu ha, cc van iu chnh ng gi, ming gi VAV, Damper I. S cu to water chiller II. Nguyn l

2. Hi mi cht i qua dn bay hi c my nn ht v nn on nhit thnh hi p cao, qua bnh tch du tch du ra khi lung, i qua dn ngng nh nhit cho mi trng theo kiu i lu t nhin ngng t thnh lng cao p, sau qua phin lc m v bn ri n van tit lu h nhit v p sut xung thp thnh lng h p v n dn bay hi. y lng h p s nhn nhit t nc lm mt v bay hi thnh hi h p ri qua bnh tch lng vo my, chu trnh c th tip tc. Nc lm mt c nhit l 120 C sau khi nh nhit, nhit gim xung cn 5-70 C. Nc sau khi c lm mt qua cc AHU v FCU trao i nhit vi khng kh cn lm mt. cc AHU s c cc ming gi hi v ming gi ti. H thng ny nhn li gi hi nhm h nhit ca khng kh cn lm lnh xung t lm tng c hiu sut lnh. III. Cu to chi tit Mi cht gas lnh R22, cng thc l CHF2Cl Dn bay hi hay thng gi l dn lnh, Dn ngng hay thng gi dn nng l cc ng ng hoc nhm m gas lnh i trong . FCU v AHU l thit b trao i nhit trung gian gia nc lnh hoc nc nng vi khng kh cn c iu ha AHU l b xl nhit m h thng ng gi trung tm, c cng sut ln v chia ra lm nhiu ng gi ph i vo khng gian iu ha, gm dn trao i nhit v qut cao p, h thng iu khin gm cm bin nhit, bung ha trn van ba ng actuator.. thng c sdng nhng khu vc rng ln mang tnh cht cng cng S AHU

3. FCU gm c qut v dn ng, cng sut nh, dng nhng ni mang tnh cht cc b. S FCU Chng II: XNG NHIT Gio vin hng dn: Nguyn c Minh Ngy thc tp: 25/03/2014 a im: Xng nhit - Khoa CN Nhit in lnh HBK Ni dung bo co I/ L hi dng nh vm. 1.S cu to

4. 2.Nguyn l hot ng: Nc ban u c bm vo thit b i lu theo ng ng dn chy vo cc ng thng ng bung t nhin liu. Mc nc trong cc ng ny khng qu y m bo khng gian cho s bay hi. Nhin liu (than , ci, v ht iu) c np vo bung t ri tin hnh chm la, nc s si v bc hi, hi nc bc ln i vo ng gp, hi nc c a ra ngoi s dng hoc a vo thit b i lu tip tc nhn nhit t khi sinh ra t bung t ty mc ch s dng v mt phn nc trong bnh cng c nhn nhit t khi ri bc hi v hi ny cng c a vo s dng, khi t bung t s i qua hai chm ng bn trn chm ng dn khi ban u v thi ra ngoi bng ng khi, v c x l, nc khng c bay hi s cn li phn y thn l hi v c bm tun hon vo tun t tip tc chu trnh sinh hi. 3.Cyclon kh.

5. Khi t l hi ra ca ng khi v c dn vo cyclon II/ L hi ng. 1/ S cu to

6. 2/ Nguyn l hot ng: Cp nc vo phn rng ca thnh l hi, tin hnh t nhin liu, nc bt u si v bc hi. Khi theo ng ng dn i ra ngoi vo cyclon t v c x l, hi nc sinh ra c dn ra ngoi a n cc thit b s dng . Trn thnh l hi c 2 ng thy, ng pha di o mc nc trong l nhm c s iu chnh cng nh cung cp thm nc cho l hi trong qu trnh hot ng, ng trn dng o p sut l hi, nu p sut hi trong l qu cao th ta vn van an ton pha trn l hi x bt hi nhm gim p sut trong l trnh nguy c n l hi. 3. Cyclon t:

7. bi di y b s c x xung y cyclon qua cc van x bi nm di ng b lng, v c a i x l. Chng 3: PTN NH MY NHIT IN NH MY NHIT IN MINI ET830 Gio vin hng dn: Nguyn c Minh Ngy thc tp: 1/04/2014

8. a im: Phng th nghim nh my nhit in - Khoa CN Nhit in lnh Ni dung bo co I/S nh my nhit in MINI ET830. II. Cu to Nh my nhit in MINI ET830 dng du DO l m hnh nh my nhit in thu nh hot ng theo chu trnh Rankin. Bo gm 5 thit b chnh : + L hi (D) + B tch nc (E) v b qu nhit (F) + Tuabin (kh) (G) + Bnh ngng (H) + Bm nc ngng (I) Ngoi ra, cn mt s thit b khc nh Tank cha nc cp (A) v h thng x l nc ; Bm nc cp (B, C); Bm Ejector (R), Van an ton, Rle t ng III. Nguyn l hot ng Nc thy cc c bm qua h thng x l nc v vo Tank cha nc A, sau c bm B, C bm vo l hi D. Trong l hi, nc nhn nhit v sinh hi chy xon theo ng ng dn nc trn thnh l hi. Hi sinh ra c nhit t2= 178O C, p2= 8 bar. Sau , mt phn hi c trch vo tank A gia nhit

9. cho nc trong ny ln 80 O C, phn cn li i qua b qu nhit in tr F. Sau khi i ra khi b qu nhit, hi c nhit t3= 240O C, p3= p2= 8bar. Sau hi c a vo tuabin. Do tn tht trn ng i nn nc trc khi vo tuabin c nhit gim xung cn t4= 200O C, p4= 7bar. Sau khi hi gin n sinh cng trong tuabin, hi c a xung bnh ngng. Ti y, hi nh nhit cho nc lm mt v ngng t thnh nc, c bm nc ngng bm vo Tank A. Chu trnh c nh vy m tip tc. CHNG 4: Phng th nghim sy - Khoa Nhit in lnh. Gio vin hng dn: Trn Th M Linh Ngy thc tp: 8/4/2014 a im: Phng th nghim sy - Khoa Nhit in lnh. Ni dung bo co thc tp. I/ Thit b sy chn khng 1/S thit b Sy chn khng 2/ Nguyn l hot ng. Nc c bm vo bnh t in tr, c bnh t gia nhit thnh nc c nhit cao v c bm n bnh sy chn khng nh nhit cho vt sy nm trn cc sn sy.Sy theo kiu sy b mt. Sau khi mt

10. nhit, nc ngui li v c bm tun hon ti bnh t in tr gia nhit. C nh vy tip tc chu trnh ca nc . Hi m do vt sy thot ra trong bnh sy chn khng c a ra ngoi bng ng dn hi. Hi m ny tip tc i qua bnh lc th v qua bnh lc tinh. Sau , hi m c a vo bnh tch m lm kh, 1 phn hi ny c x thng ra mi trng, cn mt phn c a v bm chn khng thi ra ngoi. Trng hp khi bnh tch m cha y hi m th van dn hi s t ng kha li. II/ My lm mini. 1/ S my lm MINI 2/ Nguyn l hot ng. Mi cht gas lnh R22. Tc nhn lm lnh : dung dch NaCl Mi cht trng thi hi h p, sau khi i vo my nn tr thnh hi cao p. Hi cao p sau khi i qua dn ngng, nh nhit cho nc lm mt, ngng t li thnh lng cao p. Lng cao p i qua tit lu c dng ng mao nh xon trn, lng cao p gim ng nng thnh lng h p. Lng h p sau khi nh nhit cho nc mui lm lnh th bay hi v c bm tun hon v my nn. Trong b lm lnh cha cc khay nm dc theo b, tip xc vi nc mui lnh lm lnh nc trong khay thnh . Trong b nc mui, c

11. bm c khuch tn nc mui nhm lm lnh c ton b cc khay trong b. III/ Thit b x l nhit m 1/ S thit b x l nhit m

12. 2/ Nguyn l hot ng : Mi cht c my nn lnh nn thnh hi cao p, ri i qua dn ngng tr thnh lng cao p. Lng cao p i qua bnh lc du ri qua tit lu

13. thnh lng h p ri theo ng ng dn i ln b nc lm lnh. Ti y mi cht lm lnh nc trong b xung cn 5 O C-30O C, ri mi cht li c a v my nn lnh theo ng ng thc hin tip mt chu trnh na. Nc c lm lnh c bm nc cao p bm vo 2 ng ng trn c cc vi phun nh vo trong bung phun. Khng kh trong bung phun c qut gi ht t phi sang tri, ngi chiu vi chiu nc phun, khng kh cha hi m c a ra ngoi. sau ca ht khng kh pha bn phi ca thit b v trc ca ra khng kh bn tri thit b c tm li lc bi. Bi c trong khng kh va vo y, ri xung y bung phun v c thi ra ngoi. Cc thit b m k, nhit k v rle nhit m ta c c cc thng s v nhit m ca khng kh phun ra t bung phun