What is the function of an energy recovery unit?
A) To recover energy used to cool electric motors
B) To use waste heat for on-site power generation
C) To recover waste heat from a combustion process
D) To exchange heat between outdoor air being introduced for ventilation and exhaust air
Question 2
Why should the temperature inside the compressor be kept under 300F?
A) Because the refrigerant starts to fractionate above 300F
B) Because the metal components inside the compressor will start to melt
C) Because the refrigerant starts to boil inside the compressor above 300F
D) Because the compressor oil starts to break down above 300F
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