Heating Ventilating and Air Conditioning: Analysis and Design
6th Edition
ISBN: 9780471470151
Author: Faye C. McQuiston, Jeffrey D. Spitler, Jerald D. Parker
Publisher: Wiley, John & Sons, Incorporated
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Chapter 1, Problem 1.21P
Air is being rnished to a 30-ft by 40-ft by 12-ft room at the rate of 600 cfm and mixes thoroughly with the existing air in the room before it is continuously removed at the same rate. How many times does the air change completely each hour (air changes per hour)?
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The tensile 0.2 percent offset yield strength of AISI 1137 cold-drawn steel bars up to 1 inch in diameter from 2 mills and 25 heats is
reported as follows:
Sy 93
95
101
f
97 99
107 109 111
19 25 38 17 12 10 5 4
103
105
4
2
where Sy is the class midpoint in kpsi and fis the number in each class.
Presuming the distribution is normal, determine the yield strength exceeded by 99.0% of the population.
The yield strength exceeded by 99.0% of the population is
kpsi.
Solve this problem and show all of the work
I tried to go through this problem but I don't know what I'm doing wrong can you help me?
Chapter 1 Solutions
Heating Ventilating and Air Conditioning: Analysis and Design
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Ch. 1 - Compute the heat transferred from water as it...Ch. 1 - Air enters a heat exchanger at a rate of 5000...Ch. 1 - Water flowing at a rate of 1.5 kg/s through a heat...Ch. 1 - Air at a mean temperature of 50 F flows over a...Ch. 1 - Repeat Problem 1-10 for air at 10 C, a tube with...Ch. 1 - Air at 1 atm and 76 F is flowing at the rate of...Ch. 1 - Air flowing at the rate of 1000 cfm and with a...Ch. 1 - A chiller is providing 5 tons of cooling to an air...Ch. 1 - Air is delivered to a room at 58 F and the same...Ch. 1 - A chiller is to pro;ide 12 tons of cooling to a...Ch. 1 - Air is being rnished to a 30-ft by 40-ft by 12-ft...Ch. 1 - If cold outside air at 20 F is leaking into a...Ch. 1 - A Btu-meter is a device that measures water flow...Ch. 1 - A heat pump uses a 100,000-gallon swimming pool as...Ch. 1 - A heat pump uses a 100,000-gallon swimming pooi as...
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