Enlist the properties of lubrication oils.
[5 marks]Explain in brief need of lubrication in refrigeration system.
[5 marks]Explain material used for evaporator in detail.
[5 marks]Explain the effect of refrigerant on lubricant density.
[5 marks]Write Short note on solvent and cleaning.
[5 marks]Write down short note on insulated system.
[5 marks]Write Short note on material used in refrigeration duct.
[5 marks]Explain properties of ideal insulating materials in detail.
[5 marks]Explain material used for compressor in detail.
[5 marks]Write Short note on cooling tower materials.
[5 marks]Write a short note on Glass fibre.
[5 marks]Explain jointing material and synthetic repair materials.
[5 marks]List down the types of expansion devices.
[5 marks]Write down advantage of insulation and factor affecting on thermal conductivity.
[5 marks]Write short note on Natural Insulator.
[5 marks]Discuss importance of heat insulation for Air-Conditioning.
[5 marks]Write short note on Thermal Acoustic and Fire Insulation
[5 marks]