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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Textbook Question
Chapter 4, Problem 4.9P
What do you think is the best thermostat setting (air dry bulb temperature) in a shop where the workmen are standing, walking, lifting, and performing various machining tasks? Assume that a globe temperature measurement reads 72 F (22 C), the relative humidity will be in the 45 percent range, and air motion will likely be around 30 ft/mm (0.15 m/s). The men are dressed in typical summer garments
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Moist air at a dry bulb temperature of 22°C has a relative humidity of 60% when the barometric pressure is 101.325 kPA.
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a) the partial pressures of vapor, kPa
b) the dew point temperature, °C
c) the enthalpy of the vapor, kJ/kg
2. what do we need to ensure when it comes to sound and noise in the Hangar?
3. why do we need to control the temperature and humidity in the hangar? how does it affect our mechanics?
QUESTION 24
300 people are watching a movie at a movie theater which is maintained at 75°F DB. The movie starts at 12:30 pm and ends at 2:30 pm. What is
the total cooling load from people ?
20,000 BTU/hr
O 31,500 BTU/hr
O 67,500 BTU/hr
99,000 BTU/hr
Chapter 4 Solutions
Heating Ventilating and Air Conditioning: Analysis and Design
Ch. 4 - Using Fig. 4-1, draw a conclusion about the...Ch. 4 - Using Fig. 4-1, draw a conclusion about the...Ch. 4 - Select comfortable summer design conditions (dry...Ch. 4 - It is desired to use a space as a large classroom...Ch. 4 - An indoor tennis facility finds that it has...Ch. 4 - Work Problem 4-5 for an average air speed at court...Ch. 4 - In an occupied space the mean air velocity is...Ch. 4 - An occupied space is being held at 76 F (24 C) and...Ch. 4 - What do you think is the best thermostat setting...Ch. 4 - With the air conditioning running and the...
Ch. 4 - Discuss how an emergency government mandate to set...Ch. 4 - In the heating seasons the heat loss from a...Ch. 4 - Air motion can be good or bad, depending on the...Ch. 4 - To save energy in large, chilled water systems,...Ch. 4 - Overhead fans (Casablanca fans) are often reversed...Ch. 4 - A school classroom is designed for 30 people. (a)...Ch. 4 - Carbon dioxide is being generated in an occupied...Ch. 4 - Each person in a room is assumed to be producing...Ch. 4 - An air-handling system must handle 2000 cfm with a...Ch. 4 - Prob. 4.20PCh. 4 - How many filter modules will be required using the...Ch. 4 - Work Problem 4-21 assuming that the filter is a...Ch. 4 - The M-200, 0.60.60.2 filters of Table 4-3 are to...Ch. 4 - Investigate the feasibility of using 100 percent...Ch. 4 - Work Problem 4-24 but replace the 100 percent...Ch. 4 - Using M-15 filter media and the requirement of 60...Ch. 4 - A filter system is available that will filter out...Ch. 4 - A maximum of 10 smokers are anticipated in a smong...Ch. 4 - Solve Ex. 4-4 assuming that the filter is in...Ch. 4 - Solve Problem 4-28 assuming that the filter is in...Ch. 4 - Fora 3000-ft3 combination and exercise operation,...Ch. 4 - A classroom with a capacity of 225 people is...
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