A PROJECT REPORT ON

“GEYSER”

Submitted for partial fulfilment of award of

DIPLOMAIn

ELECTRICAL ENGINEERING

(UTTARAKHAND BOARD OF TECHNICAL EDUCATION)By

ANKIT TIWARI

VINOD SINGH

GAURAV KHANDURI

MALTI TAMTA

SAPANA CHAUHAN

PRINCIPAL :- PROJECT GUIDE:-MR. NATHIRAM MR. PRIYANKA RATURI

CLASS TEACHER

MR. ARVIND CHAUHAN

DEPARTMENT OF ELECTRICAL ENGINEERING

GOVT. POLYTECHNIC NEW TEHRI, UTTARAKHAND

CERTIFICATE

Certified that ANKIT TIWARI, VINOD SINGH, GAURAV KHANDURI

MALTI TAMTA, SAPANA CHAUHAN has carried out the research work presented in

this thesis entitled “GEYSER” for the award of Bachelor of Technology specialization

in “Electrical Engineering” from Uttarakhand Board of Technical Education, under my

supervision. The thesis embodies result of original work and studies carried out by

student himself and the contents of the thesis do not form the basis for the award of any

other degree to the candidate or to anybody else.

Date: Mr. HUKUM CHAND

Head of the DepartmentDeptt. Of M.EG.P.T, D. Dun

ABSTRACT

It includes the overall work of the project like objective, development and achievements

and conclusions. This study aims create existing indirect evaporative cooler. A new dew point

indirect evaporative cooler with counter-current heat/mass exchanger was developed in this

research by optimal design, material selection, numerical simulation, experimental

investigations and economic, environmental, regional acceptance analysis.

A new dew point heat/mass exchanger using a counter-current flow pattern was designed

by numerical simulation in terms of material, structure, geometrical sizes and operating

conditions. The numerical results indicate that under a typical cooling design condition, i.e.,

35oC dry-bulb/24oC wet-bulb temperatures, the heat exchanger could achieve a wet-bulb

effectiveness of approximately 1.4. The results of numerical simulation are consistent with some

published test data.

ACKNOWLEDGEMENT

I take this opportunity to pay my regards and a deep sense of gratitude to my guide, Mr.

Priyanka Raturi, Assistant Professor, Department of Mechanical Engineering, Government

polytechnic New Tehri, for his valuable guidance, keen co-operation, and cheerful

encouragement throughout my dissertation work.

I acknowledge my sincere thanks to the staff of Department of Electrical Engineering especially

for their co-operation all through my project work.

I am thankful to the all the member of G.P.T for encouragement and motivation.

I am thankful to all my friends for their help and necessary support during my project work.

Last but not the least I wish to place on record my deep sense of gratitude to my parents without

whose blessings I would not be able to complete the project.

ANKIT TIWARI

VINOD SINGH

GAURAV KHANDURI

MALTI TAMTA

SAPANA CHAUHAN

TABLE OF CONTENTSCHAPTER

NO.

TITLE PAGE NO.

ABSTRACTACKNOWLEDGEMENTTABLE OF CONTENTSLIST OF TABLESLIST OF FIGURESNOMENCLATUREGREEK SYMBOLS

1 INTRODUCTION 12. LITERATURE

REVIEW

3

3. PSYCHROMETRY 25

4

EXPERIMENTAL SETUP

AND OBSERVATION 475 CONCLUSION 57

REFRENCES 58

NOMENCLATURE

G = gravitational acceleration, m/s2

h = heat transfer coefficient, W/m2 ∙

K hm = mass transfer coefficient, m/s

hp,f = heat transfer coefficient between intake air and channel

walls, W/m2 ∙

K hw = heat transfer coefficient between water film and channel

walls, W/m2 ∙

K hw,f = heat transfer coefficient between working air and water film,

W/m2 ∙

K idb,r = specific enthalpy of air in room temperature, kJ/kg

idb,1 = specific enthalpy of intake air at dry bulb temperature, kJ/kg

idb,2 = specific enthalpy of supply air, kJ/kg

idb,3 = specific enthalpy of exhaust air at dry bulb temperature, kJ/kg

idp,1 = specific enthalpy of intake air at dew point temperature, kJ/kg

IEC = Indirect evaporative cooler

Qcooling,IA = sensible cooling of intake air, W

Qcooling,r = cooling capacity of evaporative cooler, W

tdb,1 = inlet air dry-bulb temperature,

oC tdb,2 = outlet air dry-bulb temperature,

oC tdp,1= inlet air dew-point temperature, oC

GREEK SYMBOLS

ƐDEC = wet-bulb effectiveness of direct evaporative cooler

ƐIEC = wet-bulb effectiveness of indirect evaporative cooler

Ɛ wb = wet-bulb effectiveness

Ɛdp = dew-point effectiveness

ρf = density of air, kg/m3;

ρw = water film density, kg/m3

ρw,f = secondary air/ working air density, kg/m3

ρw,s = density of saturated air at the water temperature, kg/m3

σ = surface wettability factor