Lab Manual for Tomczyk/Silberstein/ Whitman/Johnson’s Refrigeration and Air Conditioning Technology, 8th
8th Edition
ISBN: 9781305578708
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Textbook Question
Chapter 29, Problem 8RQ
What is the evaporator coil-to-air relationship when compressor is not running?
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Fresh air at 21.1 C in which partial
pressure of water vapor is 0.018
atmosphere is blown at the rate of 214
m3/h first through a preheater and then
adiabatically saturated in spray chambers
to 100% saturation and again reheated
this reheated air has humidity of 0.024 kg
water vapor per kg dry air. It is assumed
that the fresh air and the air leaving the
re-heater have the same percentage
humidity.
Determine:-
a- The temperature of preheater,
spray-chamber and re-heater
b- Heat requirement for preheating and
re-heating
11:39 م
Chapter 29 Solutions
Lab Manual for Tomczyk/Silberstein/ Whitman/Johnson’s Refrigeration and Air Conditioning Technology, 8th
Ch. 29 - What is the first thing a technician should know...Ch. 29 - What is the coil-to-air temperature relationship...Ch. 29 - When food dehydration is not a factor, the...Ch. 29 - Prob. 4RQCh. 29 - Why is minimum dehydration not used on every job?Ch. 29 - What is the coil-to-air temperature relationship...Ch. 29 - At what evaporator temperature does an ice maker...Ch. 29 - What is the evaporator coil-to-air relationship...Ch. 29 - What is meant by the term approach when dealing...Ch. 29 - How can an evaporator be tested for efficiency?
Ch. 29 - How can a condenser be tested for efficiency?Ch. 29 - How can a hermetic compressor be tested for...Ch. 29 - A T XV system responds to an overcharge of...Ch. 29 - An automatic expansion valve system responds to an...Ch. 29 - A capillary tube system responds to an overcharge...Ch. 29 - Prob. 16RQCh. 29 - Prob. 17RQCh. 29 - Capillary tube
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- Example(3): 0.15 kg/s steam at atmospheric pressure and superheated to 400 K is bled into an air stream at 320 K and 20 per cent relative humidity. What is the temperature, enthalpy, and relative humidity of the mixed stream if the air is flowing at 5 kg/ s? How much steam would be required to provide an exit temperature of 330 K and what would be the humidity of this mixture? 11:39 مarrow_forwardThe answer to the problem is 31.3rad/s. Please show me how to get the final answerarrow_forwardThe answer to the problem is 1.00 m/s^2. Please show me how to get the final answerarrow_forward
- The answer to the problem is 0.30. Please show me how to get the final answerarrow_forwardThe answer to the problem is 1.96 m/s. Please show me how to get the final answerarrow_forwardA cylindrical tank of diameter D is currently filled with water to a height h, as shown in the figure to the right. Water enters the tank through the pipe at (1) with a cross-sectional area A₁ and a uniform velocity V₁. The height of water in the tank is increasing at a constant rate of 5 mm/s. Given the parameters below, find the volumetric flow rate in the pipe at (2), V2, in cm³/s, and classify it as an inflow or outflow. D = 20 cm h = 0.5 m A₁ = 1 cm² V₁ = 0.1 m/s h 1 V₁ D Pwater = 1,000 kg/m³ V2 2arrow_forward
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