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 44, Problem 10RQ
A(n) ______well draws water from the top of thewater column, circulates it through the heat pump, and then returns the water to the bottom of the water column.
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What is a condenser water?
1. An air-source heat pump is a heat-pump system that uses air:
a. as the system refrigerant.
b. as the heat source when operating in the cooling mode.
c. as the heat sink when operating in the heating mode.
d. as the heat source when operating in the heating mode.
2. According to the Department of Energy, duct leakage can result in a energy loss?
a. 10%
b. 20%
c. 30%
d. 40%
3. As the outside ambient temperature drops, the efficiency of a heat-pump system operating in the mode will:
a. heating, drop
b. heating, rise
c. cooling, rise
d. Both a and c are correct.
Find the true order of the components of the refrigeration cycle?
a) Evaporator-Compressor-Condenser-Expansion valve
b) Condenser-Expansion valve-Evaporator-Compressor
c) Evaporator-Compressor-Expansion valve-Condenser
d) Expansion valve-Condenser-Compressor-Evaporator
e) Compressor-Expansion valve-Condenser-Evaporator
Chapter 44 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 44 - Geothermal heat pumps, or water-source heat pumps,...Ch. 44 - An important factor (or factors) involving water...Ch. 44 - Explain the ground loop or water loop of a...Ch. 44 - Explain the refrigerant loop of a closed-loop,...Ch. 44 - The__________loop is used to distribute heated or...Ch. 44 - True or False: Domestic hot water can be heated...Ch. 44 - Prob. 7RQCh. 44 - Antifreeze solutions that can be used in the...Ch. 44 - What is the main difference between a copper and a...Ch. 44 - A(n) ______well draws water from the top of...
Ch. 44 - Which of the following is a process in which a...Ch. 44 - The function of the pressure tank in an open-loop,...Ch. 44 - If 14 gpm of water is flowing through an open-loop...Ch. 44 - Explain the operation/purpose of the buffer tank...Ch. 44 - How will oversizing the buffer tank on a...Ch. 44 - Explain why a waterless, earth-coupled,...Ch. 44 - Explain how refrigerant and oil leakage are found...Ch. 44 - What kind of material is used in the waterless...
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- (b) Bathroom sinks and some other fixtures include an overflow opening in the basin. This opening is located on the wall and near the top of the basin. The overflow opening serves two important functions: If the water tap is left on while the drain stopper is closed, the opening will channel water down into the drain opening rather than letting is spill out of the sink onto the floor. The overflow allows the sink to drain faster by introducing air into the system. A sink with a dimension given in Figure Q2(b), has water flows into it at a rate of 8 L/min. If the drain stopper is closed and water level in the sink remains constant, determine the average velocity of water flows through the 3.0 cm diameter overflow hole. Front 3 cm diameter overflow holes Q-8 L/min 15 3/4| 40 cm 15 cm Side (a) Figure Q2: (a) Picture of the sink; (b) Sink dimension (Ь)arrow_forward1- What is the pressure at the Economizer (in bar)? 2- What is the pressure at the Evaporator (in bar)? 3- How much heat received by the Economizer (kW)? 4- How much heat received by the Evaporator (kW)? 5- How much heat received by the Superheater (kW)? 6- How much heat received by the FWH (KW)?.. 7- How much heat received from the fuel burning (kW)? 8- How much heat rejected at the chimney (kW)?. T=35 C From the Pump m-1.3 kg/s + Cpw=4.2 kJ/kg.C ****************** T=150 C, To the Turbine Cp 1.008kJ/kg.K T=400C 44 T=212.2 X=0.0 X=0.85 Chimney Hoo bou to Economizer Evaporator Super Heater -Air, m-4 kg/s, T=20 C P=5 bar, X=0.8, m=0.3 kg/s from FWH X=1 1 Fuel, T-20 C, m=0.2 kg/s, C.V=33.5 MJ/kg Bumerarrow_forwardWhich part in the mechanical heat pump is used to increase the refrigerant pressure? Select one: a. Condenser b. Evaporator c. Expansion valve d. Compressorarrow_forward
- Draw the schematic and p-h diagram for the problem below: A two-stage cascade refrigeration system uses ammonia as the working substance. The evaporator is at -35 degree Celsius and high pressure condenser is at 1514.2 kPa. The cascade condenser is a direct-contact type. The refrigeration load is 90 tons. Determine the a.) the COP, and b.) the quantity of the fluid entering.arrow_forwardWhich list states the correct order of components for the absorption refrigeration? A) Evaporator, then absorber, then concentrator, then condenser. B) Absorber, then condenser, then evaporator, then concentrator. C) Condenser, then absorber, then concentrator, then evaporator.arrow_forward8) Which of the following components is NOT within the refrigeration cycle?A: Expansion valveB: CompressorC: EvaporatorD: Extractorarrow_forward
- Where must a suction-line drier be placed in a heat pumpafter a motor burnout?arrow_forwardQuality means _______ when referring to a refrigerant.arrow_forwardWhich is the most accurate description of one of the system's processes? A Fluid moves from the secondary pipes into the ground. B Fluid moves from the primary pipe into the building. Fluids circulate separately inside both pipes. D Fluid moves from the secondary pipe through the heat exchanger to the primary pipe.arrow_forward
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