BE Mechanical 2003 Structure - K. K. Wagh Education Society
BE Mechanical 2003 Structure - K. K. Wagh Education Society
BE Mechanical 2003 Structure - K. K. Wagh Education Society
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(402045): Refrigeration and Air conditioning (Elective I)<br />
Teaching Scheme<br />
Lectures: 4 Hrs/Week<br />
Examination Scheme<br />
Theory: lOO Marks<br />
1. Air refrigeration system:<br />
Air as refrigerant, air craft refrigeration cycle, necessity, air cycle systems for air<br />
craft refrigeration such as bootstrap, regenerative, reduced ambient.<br />
2. Vapour compression system:<br />
Thermodynamic analysis, performance of system, actual vapour compression<br />
refrigeration cycle-effect of change of condenser and evaporator pressure, multi<br />
compressor-multi evaporator, and cascade systems.<br />
3. Refrigerants:<br />
Factors governing selection of refrigerants, alternative refrigerants for CFC’s and<br />
HCFC’s, ozone depletion, global-warming potential, Montreal and Kyoto<br />
protocol, total equivalent warming impact (TEWI), secondary refrigerants,<br />
refrigerant mixtures.<br />
4. Vapour Absorption Refrigeration:<br />
Aqua-ammonia and Li-Br systems, temperature-pressure concentration properties<br />
of Li-Br-water solutions, calculation of mass flow rates in the aborption cycle,<br />
enthalpy of Li-Br solution, thermal analysis of simple absorption system, actual
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