NJ BLUE SEAL REFRIGERATION MASTER
TRADE CERTIFICATION EVALUATION TEST
PAPER 2026 COMPREHENSIVE QUESTIONS
WITH EXTENSIVE CORRECT ANSWERS
EXPERT REVIEWED FULL PREPARATION
STUDY GUIDE
⩥ Name the 4 parts of a refrigeration system. Answer: compressor,
condenser, receiver, & evaporator
⩥ Name the 3 methods of heat transfer. Answer: conduction, convection,
& radiation
⩥ What type of heat increases temp, but the state remains the same?.
Answer: sensible heat
⩥ 600,000 BTU/HR = ____ tons of refrigeration?. Answer: 50
⩥ How many tons of refrigerant is req'd to prevent 2,000 lbs of ice from
melting in 24 hrs?. Answer: 1 ton
⩥ What is the heat of ammonia at 5°F?. Answer: 565 BTUs
, ⩥ What is the pressure of 5°F of ammonia?. Answer: 19.6 psig
⩥ What are expansion valves rated in?. Answer: Tons
⩥ What is an indication your expansion valve is leaking?. Answer: It
would frost up
⩥ What formula is used to determine tower water cycles?. Answer:
Tower water chlorides / make up water chlorides
⩥ What will cause high head pressure?. Answer: A dirty condenser / air
⩥ How many lbs of refrigerant can be stored in a cylinder with a 125 lb
capacity?. Answer: 100 lbs
⩥ What 2 values are needed to calculate the amount of refrigeration
req'd?. Answer: BTUs to be removed & the time req'd to compress the
refrigerant
⩥ Which seal would not be used on a compressor?. Answer: Mechanical
seal
TRADE CERTIFICATION EVALUATION TEST
PAPER 2026 COMPREHENSIVE QUESTIONS
WITH EXTENSIVE CORRECT ANSWERS
EXPERT REVIEWED FULL PREPARATION
STUDY GUIDE
⩥ Name the 4 parts of a refrigeration system. Answer: compressor,
condenser, receiver, & evaporator
⩥ Name the 3 methods of heat transfer. Answer: conduction, convection,
& radiation
⩥ What type of heat increases temp, but the state remains the same?.
Answer: sensible heat
⩥ 600,000 BTU/HR = ____ tons of refrigeration?. Answer: 50
⩥ How many tons of refrigerant is req'd to prevent 2,000 lbs of ice from
melting in 24 hrs?. Answer: 1 ton
⩥ What is the heat of ammonia at 5°F?. Answer: 565 BTUs
, ⩥ What is the pressure of 5°F of ammonia?. Answer: 19.6 psig
⩥ What are expansion valves rated in?. Answer: Tons
⩥ What is an indication your expansion valve is leaking?. Answer: It
would frost up
⩥ What formula is used to determine tower water cycles?. Answer:
Tower water chlorides / make up water chlorides
⩥ What will cause high head pressure?. Answer: A dirty condenser / air
⩥ How many lbs of refrigerant can be stored in a cylinder with a 125 lb
capacity?. Answer: 100 lbs
⩥ What 2 values are needed to calculate the amount of refrigeration
req'd?. Answer: BTUs to be removed & the time req'd to compress the
refrigerant
⩥ Which seal would not be used on a compressor?. Answer: Mechanical
seal
