Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Textbook Question
Chapter 25, Problem 6RQ
Briefly describe the function of a non-short-cycling, or "one-time," automatic pumpdown system.
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Please
Define and discuss the important parts of the Duplex Pump.
For a hydraulic power unit, this part protects the pump from taking in any harmful particles that may be in the reservoir
a. liquid level gauge
b. filler/breather
c. pressure gauge
d. suction strainer
Chapter 25 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 25 - Which is not a basic component of the compression...Ch. 25 - Describe modulating fluid flow.Ch. 25 - The purpose of the crankcase pressure-regulating...Ch. 25 - Describe the function of an electric evaporator...Ch. 25 - Prob. 5RQCh. 25 - Briefly describe the function of a...Ch. 25 - Two types of relief valves are_______and ______.Ch. 25 - Why is low-ambient control necessary?Ch. 25 - Which is not a method of low-ambient control on...Ch. 25 - Low-pressure switch
Ch. 25 - High-pressure switchCh. 25 - Low-ambient(switch)Ch. 25 - Oil safety switchCh. 25 - What is the function of the current sensing relay...Ch. 25 - Why is there a time delay in an oil safety...Ch. 25 - What is off-cycle defrost?Ch. 25 - Two types of off-cycle defrost are______and...Ch. 25 - Two methods for accomplishing defrost on...Ch. 25 - Filter drierCh. 25 - Heat exchangerCh. 25 - Suction accumulatorCh. 25 - ReceiverCh. 25 - Prob. 23RQCh. 25 - Prob. 24RQCh. 25 - What will happen if the float in an oil separator...Ch. 25 - The function of the evaporator pressure regulator...Ch. 25 - What is the function of the oil return hole or...Ch. 25 - What is the function of the pressure equalization...
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- Pressure relief valves: Select one: a. Open manually upon overloading in pressure O b. Open automatically upon overloading in pressure c. Two directional valve d. Oil flow control valvearrow_forwardA.I) The term pressure drop refers to what in a hydraulic circuit a. The change in the flow rate in the hydraulic circuit b. The change in the fluid’s velocity in the circuit c. The pressure seen on the pressure gauge known as PG main d. The difference in pressure at the inlet of a component compared to the pressure at the outlet of the same component A.II) How are relief valve connected in a hydraulic circuit. a. In series with the pump b. In parallel with the pump c. In either series or parallel depends on the circuit d. Relief Valves are not connected to the pumparrow_forwardWhat happens if the delivery valveof a running reciprocating pump is closed?arrow_forward
- is a type of safety valve used to control or limit the pressure in a system. Select one: O a. On and off valve O b. One way flow control valve O . Shutoff valve O d. Pressure relief valvearrow_forwardWhich one of the following is a component of a centrifugal compressor? a. Suction valve b. Nozzle Impellor d. Cylinderarrow_forwardFor a hydraulic power unit, this part reads the oil pressure at the pump outlet a. filler/breather b. suction strainer c. liquid level gauge d. pressure gaugearrow_forward
- What is the function of a pilot-to-close check valve in a pneumatic system? A. Allows flow in reverse direction but to foward B. Blocks flow in reverse direction but not forward C. Allows flow in either direction D. Blocks flow in either direction Allows flow in reverse direction but not forward. Blocks flow in reverse direction but not forward. Allows flow in either direction. Blocks flow in either direction.arrow_forwardWhat causes coolant to leak from the water pump weep hole? Select one: a. A faulty thermostat b. A faulty radiator cap C. A faulty bypass hose d. A faulty pump shaft sealarrow_forwardneed correct and urgentarrow_forward
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