REFRIGERATION+AIR COND.TECH.-W/2 ACCESS
8th Edition
ISBN: 9781337370042
Author: TOMCZYK
Publisher: CENGAGE L
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Textbook Question
Chapter 48, Problem 1RQ
What is the purpose of the cooling tower in a water-cooled system?
Expert Solution & Answer
To determine
The use of cooling tower in a water-cooled system.
Answer to Problem 1RQ
A cooling tower in water cooled system is used to reject thewaste heat into the atmosphere with the help of cooled air.
Explanation of Solution
A water-cooled system is used to cool the water directly by the evaporator coil.
Water cooling system consist of water pump, fan, radiator cap, water jacket, thermostat valve and temperature gauge.
Cooling tower uses the evaporation of water to remove heat and to cool the working fluid.
A cooling tower in water cooled system is used to reject the waste heat into the atmosphere with the help of cooled air. This is the evaporative type heat rejection system.
The function of cooling tower is like a heat exchanger which exchange the heat between hot water and cooled air. The heat from water transferred to air and it rises the air temperature then dischargeto atmosphere.
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Q1: Determine the length, angle of contact, and width of a 9.75 mm thick
leather belt required to transmit 15 kW from a motor running at 900 r.p.m. The
diameter of the driving pulley of the motor is 300 mm. The driven pulley runs at
300 r.p.m. and the distance between the centers of two pulleys is 3 meters. The
density of the leather is 1000 kg/m³. The maximum allowable stress in the
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5. A 15 kW and 1200 r.p.m. motor drives a compressor at 300 r.p.m. through a pair of spur gears having
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of forged steel having an allowable static stress as 210 MPa, while the gear is made of cast steel
having allowable static stress as 140 MPa. Assuming that the drive operates 8 to 10 hours per day
under light shock conditions, find from the standpoint of strength,
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Check the gears thus designed from the consideration of wear. The surface endurance limit may be
taken as 700 MPa. [Ans. m = 6 mm; b= 60 mm; Tp=24; T=96; Dp = 144mm; DG = 576 mm]
Chapter 48 Solutions
REFRIGERATION+AIR COND.TECH.-W/2 ACCESS
Ch. 48 - What is the purpose of the cooling tower in a...Ch. 48 - The typical difference in temperature between the...Ch. 48 - Prob. 3RQCh. 48 - Prob. 4RQCh. 48 - Prob. 5RQCh. 48 - Why should cooling towers be constructed with...Ch. 48 - Prob. 7RQCh. 48 - Prob. 8RQCh. 48 - Prob. 9RQCh. 48 - Prob. 10RQ
Ch. 48 - Vortexing in a cooling tower occurs in the A....Ch. 48 - Prob. 12RQCh. 48 - Prob. 13RQCh. 48 - What is the component that is installed between...Ch. 48 - Prob. 15RQCh. 48 - Prob. 16RQCh. 48 - Prob. 17RQCh. 48 - Prob. 18RQCh. 48 - What is meant by encapsulation and explain how it...Ch. 48 - Prob. 20RQCh. 48 - Explain how a particle separator works in a...
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