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                                                                         HEAT POWER ENGINEERING

                                                                                          PRACTICUM 

THEORY
Unit I AIR CYCLES AND IC ENGINES
Basic concept of thermodynamics, definition and units of pressure, temperatur
volume, density, specific heat, energy, work, force, power, heat, enthalpy, a
entropy. Laws of perfect gases and its Equation. Thermodynamic processes such
as constant volume, constant pressure, constant temperature, adiabatic,
polytropic. (simple problems)
Air cycles – air standard efficiency – reversible and irreversible processes – Car
cycle – Otto cycle – Diesel cycle. Illustration of above cycles on pressure, volume,
temperature, and entropy scale- working and calculation of efficiency. (sim
problems )
Internal combustion engines – classification – comparison of four stroke and t
stroke engines.
Testing of IC engines– indicated power – brake power – friction power –
efficiencies of I.C. engines – indicated thermal, brake thermal, mechanical,
relative efficiencies – Specific fuel consump

9

Practical Exercises:
Ex.No Name of the Experiment Period
1 Determine the flash and fire point of the lubricating oil by using
cup apparatus and Closed cup apparatus and compare the value for the
given sample.

5

2 Draw the valve timing diagram of single cylinder four stroke petrol
engines.

5

3 Draw the valve timing diagram of single cylinder four stroke diesel
engines.

5

4 Draw the port timing diagram of a single cylinder two stroke Petrol
Engine.

5 Load test (Performance test) on Four Stroke Diesel Engine or Four
Stroke Petrol Engine.

5

6 Morse test on multi-cylinder petrol engine. 5
7 Heat balance test on Four Stroke Diesel or Petrol Engine. 5
   Unit II AIR COMPRESSOR , REFRIGERATION AND FUELS
Air Compressor and its functions, Single stage & Multi stage reciprocating air
compressor – Refrigeration: Introduction to refrigeration, refrigerant, refrigeration
effects. COP, TON of refrigeration. Vapor compression refrigeration (VCR) system.
Classifications of fuels– requirements of a good fuel – stoichiometric air requir
for complete combustion of fuels –products of combustion – analysis of exhaust
gases – calorific value of fuels – higher and lower calorific val

6

Practical Exercises:
Ex.No Name of the Experiment Period
8 Volumetric efficiency of Air Compressor
9 Determination of COP of Refrigeration System. 5
10 Find the Percentage of CO, CO2
, O2
, and amount of HC, NOx using

Exhaust gas analyser.