Dr.A.P.J.Abdul Kalam University BE Mechanical Refrigeration and Air Conditioning [ME-803] Aug-Sep 2020 Question Paper

Dr.A.P.J.Abdul Kalam University Old Question Papers

Bachelor of Engineering

Eighth Semester Main Examination, Aug-Sep 2020

Refrigeration and Air Conditioning [ME-803]

Branch-ME

Time: 3:00 Hrs Max Marks 70

Note : (i) Attempt any five questions out of eight.

(ii) All questions carry equal marks.

Q.1 Discuss the effect of suction pressure and supercharge on the performance of vapor compression system.

Q.2 What is function of flash inter cooler provided in a compound vapor compression refrigeration system?

Q.3 Explain two stage compression with inter cooling and sub cooling by external cooling source.

Q.4 State the advantages and disadvantages of Electrolux refrigerator over conventional refrigerator

Q.5 Discuss the effect of suction pressure and supercharge on the performance of vapor compression system.

Q.6 Describe with a line diagram and T-S diagram about regenerative air refrigeration.

Q.7 State the factor that determine human comfort sketch comfort chart and show on it the comfort zone.

Q.8 State the properties and used of the following refrigerants-

(i) Ammonia

(ii) Carbon-dioxide

(iii) R-12

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