Refrigeration Study Guide Questions and Answers | New One | Grade A+

recovery process using a self-contained refrigerant recovery unit to draw or push the refrigerant out of the circuit. Ans: Active Recovery Recover process that makes use of the system pressure and/or the system compressor to push the refrigerant out. the refrigerant must be captured in a non pressurized container. Ans: Passive Recovery A Poisonous colorless gas that can be generated by the burning of refrigerant gases. The gas had an oder much like that of freshly cut hay. As it enters the lungs it reacts with water to produce hydorchloric acid and carbon monoxide. Ans: Phosgene Gas A device that changes the rotational force of an EEV stepper motor to a push and pull linear motion opening and closing valve Ans: Digital Linear Actuator A System in which the required cooling effect is achieved by the expansion of refrigerant from a liquid to vapor state. Ans: Direct Expansion describes and expansion valve that has a connection to the suction line. Ans: Externally Equalized The refrigerant vapor that forms as the result of a rapid change from its liquid state to a reduced pressure condition Ans: Flash Gas describes the operation of an expansion valve opening and closing excessively and repeatedly unable to stabilize. Ans: Hunting an expansion valve that uses the pressure value at its own outlet to the evaporator coil to serve as a closing force. Ans: Internally equalize