heat balance test on computerised single cylinder diesel engine fitted with eddy current dynamometer

7/21/2019 Heat Balance Test on Computerised Single Cylinder Diesel Engine Fitted With Eddy Current Dynamometer

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HEAT BALANCE TEST ON COMPUTERIZED SINGLE CYLINDER DIESEL

ENGINE FITTED WITH EDDY CURRENT DYNAMOMETER

AIM:

To conduct a heat balance test on a single cylinder diesel engine fitted with eddy

current dynamometer.

SYSTEM RESOURCES:

1. I.C.Engine: Single cylinder four stroke diesel engine 5 H.. !"##ro$.%

&. Eddy current dynamometer

'. C ( )ata ac*uisition system.+. Calorimeter

5. ,uel tank ( "ir bo$

-. Sensors: a% ressure sensor b% o#tical sensor c% Inductie sensor d% load cell e%

/eel switch0. Transmitters: a% Engine load transmitter b% Engine S#eed transmitter c% "ir

elocity transmitter d% ressure sensor conditioner e% heel flow transmitter

f% ,uel flow transmitter g% Encoder

FORMULA USED:

1. 2rake ower !2.%2. 3 Tor*ue $ "ngular acceleration

3 ! $4.1 $ 6% $ !& $ 7$ 8 9 -%

3 ! $ 8 $ .&5 4.1 $ & $ '.1+% 9 !- $ 1% !k%

3 ! $ 8% $ .&5-- khere 3 /oad in kg

8 3 Engine s#eed in 6;

&. ,uel consum#tion !,.C% 3 <uantity of fuel 9 Time !kg9sec%<uantity of fuel 3 &' ml 3 &' 9 !1 $ 1% 3 .&' m'

3 .&' $ 0 3 .&1 kghere= )ensity of diesel 3 0 kg 9 m'

'.2rake s#ecific fuel consum#tion !2.S.,.C%

3 !,.C in kg9sec%9!2rake #ower in k%+. Heat in#ut 3 !,.C in kg 9sec% 9 !calorific alue of fuel% k

here= Calorific alue of fuel 3 +& k> 9 kg

5. Heat utili?e for brake #ower [email protected].%

3 Tor*ue $ "ngular acceleration3 ! $ 4.1 $ 6% $ !& $ 7 $ 8 9 -%

3 ! $ 8 $ .&5 $ 4.1 $ & $ '.1+% 9 !- $ 1% k

3 ! $ 8% $ .&5-- khere 3 /oad in kg

8 3 Engine s#eed in r#m

-. ercentage heat utili?ed for brake #ower [email protected].%3 !Engine brake #ower 9 Heat in#ut% $ 1 A

0.Heat carried away by e$haust gas !H.C.E.B%

3 +.1- $ !T1 Ta% $ m cal $ !T+ D T'% 9 !T1 D T&% k

here=



OBSERVATION TABULAR COLUMN: 1

Sl.8o /oad!kg%

Engine s#eed!r#m%

,uelconsum#tion

!kg9sec%

ater flow at outletof calorimeter

!litres9sec%

,low of outletof water

!litres9sec%

OBSERVATION TABULAR COLUMN: 2

Sl.8o E$haust

gas I8

!C%

E$haust gas

F@T !C%

Calorimeter

water I8

!C%

Calorimeter

ater F@T

!C%

Engine

ater I8

!C%

Engine

water

F@T !C%

CALCULATION TABULAR COLUMN: 1

Sl.8o Heat in#ut

!k%

Heat utili?ed for

brake #ower !k%

Heat carried

by E$haust

gas !k%

Heat carried

by cooling

water !k%

Heat

@naccounted

!k%

CALCULATION TABULAR COLUMN: 2

Sl.8o A of heat utili?ed

for brake #ower

A of heat carried away

by e$haust gas

A of heat carried

away by cooling

water

A Heat

@naccounted



T1 D tem#erature of e$haust gas in.

T& D Tem#erature of e$haust gas out

Ta D "mbient tem#eraturemcal D <uantity of water #assing through e$haust gas calorimeter in kg9sec

T' D tem#erature of calorimeter water in.

T+ D Tem#erature of calorimeter water out.C# D +.1- k>9kgk

. ercentage heat carried away by e$haust gas !.H.C.E.B%3 !Heat carried away by e$haust gas 9 Heat in#ut% $ 1 A

4.Heat carried away by cooling water !H.C.C.%

3 m $ C# $ !T- D T5%

here m D *uantity of water #assing through engine in kg9secC# 3 +.1- k>9kg

T5 D Tem#erature of engine water in

T- D Tem#erature of engine water out

1. ercentage heat carried away by cooling water !.H.C.C.%3 !Heat carried away by cooling water 9 Heat in#ut% $ 1 A

11. Heat unaccounted !H.@%3 Heat in#ut D ! Heat utili?ed for brake #ower G Heat carried away

by e$haust gas G Heat carried away by cooling water% k

1&. ercentage heat unaccounted !.H.@%

3 !Heat unaccounted 9 Heat in#ut% $ 1 A

PROCEDURE:

1. Ensure that water su##ly is gien to calorimeter= engine ( dynamometer.&. Switch on the &' su##ly to the #anel. Switch on the main switch button on

the control #anel.

'. Switch on the C and monitor.+. ,ollow the software #rocedure.

5. Increase the load gradually in ste# ' to +.

-. 8ote the obseration readings and the result tabulation at the end of thee$#eriment.

0. switch off the com#uter and all transmitters.

. Switch off the mains.

4. Ensure all water connections are closed.

MODEL CALCULATION:



RESULT:

Thus the heat balance test on a single cylinder diesel engine fitted with eddy

current dynamometer was conducted and the heat balance sheet was drawn.

heat balance test on computerised single cylinder diesel engine fitted with eddy current dynamometer

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