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 10, Problem 11RQ
What is the main difference between a zeotropic and an azeotropic refrigerant blend?
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3) What are some criteria that need to be considered in the selection of a refrigerant?
Please choose one type of refrigerant in air conditioning system market and elaborate
Two cylinders of refrigerant have the pressure of 50 psig and 110 psig. A technician decides the refrigerants are contaminated and wants to combine them in one tank to be sent out. The tank the mixture will go in is rated for 400 psig. This tank already has 200 psig in it. What will be the total pressure when the refrigerants are mixed?
______________ psig
Generally speaking there are three basic categories of attributes we desire of our refrigerants
Performance (efficiency, compatibility, cost)
Safety
Minimal environmental impact (ODP, GWP and TEWI)
Comment on these three basic categories of attributes of refrigerants.
Chapter 10 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 10 - How can liquid refrigerant be added to the...Ch. 10 - How is the refrigerant cylinder pressure kept...Ch. 10 - Why does the refrigerant pressure decrease in a...Ch. 10 - What type of equipment normally has the...Ch. 10 - Why are digital scales preferred over other types...Ch. 10 - How does a graduated cylinder account for the...Ch. 10 - What methods besides weighing and measuring are...Ch. 10 - Two or more refrigerants combined together to...Ch. 10 - Define temperature glide, and give examples of...Ch. 10 - A portion of a refrigerant blend that is...
Ch. 10 - What is the main difference between a zeotropic...Ch. 10 - What is meant by "restricting" liquid refrigerant...Ch. 10 - What causes fractionation in certain refrigerant...Ch. 10 - When should a service technician use the...Ch. 10 - A service technician is charging an...Ch. 10 - A technician takes the following readings on an...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Are federal excise taxes on reclaimed refrigerants the same as those for new refrigerants?arrow_forwardWhat is the name of the conference that was held in Canada in 1987 to attempt to solve the problem of refrigerants released into the atmosphere?arrow_forwardDefine the term subcooled liquid.arrow_forward
- What are higher-efficiency refrigerant blends that can be used as long-term replacements for R-22 in residential and light-commercial air-conditioning applications?arrow_forwardWhat are the main centrifugation methods, what characterizes them, and what is the main difference between them and the effect they have on food?arrow_forwardWhy are there more safety precautions for R-410A thanwith other popular refrigerants like R-22 and R-404A?arrow_forward
- -Experiment- Air conditioning (Study of Air Conditioning Unit: Evaluation of heating and steam injection performance) 1.Compare the effect of steam injection on humidification process with that of hot water spraying? 2. Why does the process of steam injection used in applications which need to maintain air with high humidity? 3. What is the reason of having preheater before steam injector?arrow_forwardWhich of the following is/are a necessary part of a liquefaction process? a.all of these b.an expansion process c.throttle d.a heat exchangerarrow_forwardPick one important consideration in selecting a refrigerant and explain its implications.arrow_forward
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