Wednesday, January 25, 2023

Dr. A.P.J. Abdul Kalam University BE VIII SEM (ME) Refrigeration and Air Conditioning [ME-803] June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Bachelor of Engineering

Eighth Semester Main Examination, June-2021

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

Q.2 State the advantages and disadvantages of Electrolux refrigerator over conventional

refrigerator

Q.3 Discuss the effect of suction pressure and supercharge on the performance of vapor

compression system.

Q.4 State the properties and used of the following refrigerants-

(i) Ammonia

(ii) Carbon-dioxide

(iii) R-12

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

compression system.

Q.6 Explain two stage compression with inter cooling and sub cooling by external

cooling source.

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

comfort zone.

Q.8 What is function of flash inter cooler provided in a compound vapor compression

refrigeration system?

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