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 22, Problem 5RQ
After heat is absorbed into a condenser medium in a water-cooled condenser, the heat can be deposited in one of two places. What are they?
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(b)
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determine the average velocity of water flows through the 3.0 cm diameter overflow
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Chapter 22 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 22 - Why do some condensers have to be cleaned with...Ch. 22 - The three materials of which condensers are...Ch. 22 - Who should be consulted when condenser cleaning is...Ch. 22 - When is the most heat removed from the refrigerant...Ch. 22 - After heat is absorbed into a condenser medium in...Ch. 22 - A water-cooling tower capacity is governed by what...Ch. 22 - When a standard-efficiency air-cooled condenser is...Ch. 22 - Four methods for controlling head pressure in an...Ch. 22 - The prevailing winds can affect which of the...Ch. 22 - True or False: Air-cooled condensers are much more...
Ch. 22 - The type of condenser that has the lowest...Ch. 22 - Compare the standard conditions of high-efficiency...Ch. 22 - Name two ways in which the heat from an air-cooled...Ch. 22 - Briefly describe what is meant by floating head...Ch. 22 - Explain how to flush impurities from a...Ch. 22 - Explain the basic operation of a combination ORI...Ch. 22 - Name two problems a refrigeration system may have...Ch. 22 - Briefly explain what is meant by condenser...
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- In a surface condenser, O cooling water and steam passes over the tubes. steam and cooling water never mix to give condensate. steam and cooling water mix to give condensate O steam and cooling water passes inside the tubes .arrow_forward3. The food storage room requires a cooling system with a capacity of 15 tons of refrigeration that operates at an evaporator temperature of -17.5 ° C and a condenser temperature of 40.7 ° C. The refrigerant used is R-134a and the system operates in saturated conditions. a. COP = Answer b. Refrigerant flow rate = Answer kg / s. c. Heat loss rate in condenser = Answer kJ / s.arrow_forwardNumber 3 The food storage room requires a cooling system with a capacity of 15 tons of refrigeration that operates at an evaporator temperature of -17.5 ° C and a condenser temperature of 37.0 ° C. The refrigerant used is R-134a and the system operates in saturated conditions. a. COP= b.Refrigerant flow rate = Answer in kg / s. c. Heat loss rate in condenser = Answer kJ / s.arrow_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_forward2- The following data relate to a two-pass surface condenser: Steam condensed = 1540 kg/hr Temperature of cooling water when it enters the condenser = 15° C Temperature of cooling water when it leaves the condenser = 30 ° C Vacuum in the condenser = 675 mm of Hg Barometer reading = 750 mm of Hg Temperature of condensate = 32 ° C Quality of exhaust steam = 0.92 Water velocity in tubes = 2.6 m/s Outside diameter of tubes = 2.8 cm Thickness of tubes = 0.03 cm Heat Transfer coefficient = 3.35 kJ/h/cm Determine Area of the tube surface required а- b- No. of tubes c- Length of tubesarrow_forwardPlease calculate enthalpies and the heat of a condenser and evaporator. Thank youarrow_forward
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