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 9, Problem 10RQ
What measurement or index takes into considerationboth the indirect and direct global warming effects of refrigerants?
A. Total equivalent warming impact (TEWI)
B. Greenhouse effect number
C. Global warming number
D. Greenhouse effect index
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Students have asked these similar questions
State if the listed statement is Ture (T) or False (F) and correct the false statement:
1. Thermodynamic is a science of energy
2. Closed system is also called control volume
3. Steam power plant cycle is employed to produce a mechanical and electrical
energy
4. In a Carnot cycle, the isothermal process in a boiler and a condenser ( )
5. Isobaric process means volume is constant
6. Isentropic process means adiabatic and reversible
7. Pump is a device that consumes energy
8. Compressor is a device that raises a pressure of incompressible fluid
flow
( )
9. Thermal efficiency means the output by input
10. Cycle means a group of process that has initial state and final state
( )
( )
Which of the following statement(s) is(are) correct?
Group of answer choices
A. N
B. The pressure, volume, and temperature of the steam are not connected by simple equations unlike ideal gases.
C. An irreversible adiabatic process is a constant entropy process.
D. The vaporization process of steam is isobaric in nature.
E. The general energy equations for ideal gas are analogous to the equations for the processes of vapors.
1. A. Using the Steam Tables, determine the amount of cooling water needed by a condenser in kg/sec if wet steam comes into the
condenser at P= 610.44mmHG vac and 99.47 % moisture , mass flow rate = 7200 + (SN/X) kg/hr. Cooling water enters the condenser at 12
deg C and leaves at 21 deg C. Answer:
B. Draw the schematic diagram of the condenser and process in the PV ahd TS
diagrams below. Cp H2O = 4.187 KJ/(kg-K):
Schematic diagram
of heat exchanger
=condenser
Chapter 9 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 9 - What is the difference between the oxygen we...Ch. 9 - Describe the difference between good and bad...Ch. 9 - Explain the process of ozone depletion resulting...Ch. 9 - Which refrigerants have a 0 ODP? A. HFCs B. HCFCs...Ch. 9 - An increase in the natural greenhouse effect that...Ch. 9 - True or False: Only CFCs and HCFCs contribute...Ch. 9 - Explain what a global warming potential (GWP) is.Ch. 9 - Prob. 8RQCh. 9 - Describe the difference a direct and an indirect...Ch. 9 - What measurement or index takes into...
Ch. 9 - Describe the differences between CFCs, HCFCs,...Ch. 9 - CFCs are more harmful to the stratospheric ozone...Ch. 9 - Prob. 13RQCh. 9 - Describe the difference between an azeotropic...Ch. 9 - Why are there more safety precautions for R-410A...Ch. 9 - The three most popular synthetic oils in the...Ch. 9 - What is the name of the conference that was held...Ch. 9 - What agency ofthe federal government is charged...Ch. 9 - Explain the differences between active and passive...Ch. 9 - Are federal excise taxes on reclaimed refrigerants...Ch. 9 - Prob. 21RQCh. 9 - Prob. 22RQCh. 9 - To reclaim refrigerant meas to__________.Ch. 9 - Explain what is meant by a nonpressurized recovery...Ch. 9 - Prob. 25RQCh. 9 - Prob. 26RQCh. 9 - The standard that a refrigerant must meet after it...Ch. 9 - Briefly describe the types of piercing valves used...Ch. 9 - Briefly describe an oil-less refrigerant recovery...
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- Performing a home energy audit starts with a visualinspection of a home and its energy systems which include: ______, ________, _______, and _______.arrow_forward1. A. Using the Steam Tables, determine the amount of cooling water needed by a condenser in kg/sec if wet steam comes into the condenser at P= 610.44mmHG vac and 99.47 % moisture, mass flow rate= 7200+ (X/SN) kg/hr. Cooling water enters the condenser at 12 deg C and leaves at 21 deg C. Answer: B. Draw the schematic diagram of the condenser and process in the PV and TS diagrams below. Cp H20 = 4.187 KJ/(kg-K): Schematic diagram of heat exchanger =condenser S 2. Use only the MD below to solve this Item; use it by plotting data and process to determine items being asked. Steam enters a turbine at 117.4308 atmgage and 932 deg. F, and expands isentropicaly to 177.17 inches of Hg. For 2 + (X/SN) kg/sec of steam, what is (a) the ideal work done (KI/sec) if AKE = 0 and actual exhaust enthalpy is 2700 KI/kg. a)Ans: (b)ne =_ (c)Determine: (e) Actual steam temp ideal steam moisture at exhaust. Ans: at the exhaust. Ans. g) change in entropy during the actual process. Ans 3000 2500 2000…arrow_forwardK2 please help with my reviewer. Provide me the full solution and answer thank you SN=40arrow_forward
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- Question 5 The natural ventilation can be driven by: O Humidity difference Air quality difference Temperature difference O Air pressure differencearrow_forward1. If 1 gallon of oil = 1.4 therm, how many gallons have been wasted by heat loss in Feb? (1 therm = 100,000 BTU)_____________________________________________________________________________________2. If $1.30 per therm, how much did you waste from house heat loss in Feb?arrow_forwardneed help. air conditioningarrow_forward
- QUESTIONS ABOUT REFRIGERANTS Q8/ Choose True or False to answer the following: 1) The natural ice and a mixture of ice and salt were the first refrigerants. A. True B. False 2) R-134a gas is similar to R-152a in belonging to the hydrocarbon refrigerant groups A. True B. False 3) The inorganic refrigerant R-729 were exclusively used before the introduction of halo-carbon refrigerants A. True B. False 4) R410A, also known as propane A. True B. False 5) The brines commonly used are calcium chloride (CaC12) A. True B. Falsearrow_forwardB8arrow_forwardThermal Evaluation: How does the ideal gas model help evaluate properties of ideal gases ?arrow_forward
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