Answer the following questions in detail.
Question 1) Write down the disadvantages of air refrigeration system?
Question 2) What do you mean by isentropic efficiency of compression and expansion? Explain in detail
Question 3) Write down the effect of Superheating on performance of vapour compression refrigeration system?
Question 4) What do you mean by flash chamber?
Question 5) Write down the principle of vapour absorption refrigeration system?
Question 6) From the environment consideration ammonia is taken as a better refrigerant, but still it is not used in domestic refrigerator. Explain why in detail.
Question 7) How air conditioning, differ from refrigeration?
Question 8) What do you mean by effective temperature?
Question 9) What is wet bulb depression? Provide its importance.
Question 10) How will you explain desert condition of air?
Question 11) State humidity ratio, Dew point temperature, apparatus dew point Temperature and humid specific heat. What are the major factors affecting performance of simple vapour compression refrigeration system?
Question 12) Explain three fluid system of refrigeration with well labelled sketch giving the function of each fluid in the system.