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  3.   1.      true or false: heat

  1.      True or false: heating air de-humidifies it. 2.      What capacity (power) electric heater would be needed to...

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Mechanical Engineering

 

1.      True or false: heating air de-humidifies it.

2.      What capacity (power) electric heater would be needed to raise the temperature of 300 cubic feet of concrete from 65° F to 150° F in 120 minutes? As this is electrical power, state response in watts or kilowatts.

3.      What would be the total cost of #2 fuel oil to operate a boiler expected to perform the task in question 2 if the boiler were operating at full fire with an efficiency of 80% and the cost of #2 fuel oil is $2.50/gallon?

4.      How does a chilled beam save energy in the operation of an HVAC system?

5.      What are the four major components of a vapor-compression refrigeration machine?

6.      What is the purpose of a VFD in an HVAC system?

 

Answer & Explanation Solved by verified expert
4.1 Ratings (471 Votes)
1 False on heating moisture content remains same 2Initial temp 65F 183333C Final temp 150F 65556C Q 300 ft3 8495m3 density 2400kgm3    See Answer
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