Calculate the length of a common rafter for the following buildings.
28' span, 6/12 pitch...
Engineering, 21.09.2021 08:40 bradenjesmt1028
Calculate the length of a common rafter for the following buildings.
28' span, 6/12 pitch
Answers: 3
Engineering, 04.07.2019 19:20
In the winter, in order to keep the classroom steadily at 68 f before 10 pm, heating with an average rate of 42,000 btu/hr is provided. assume the outdoor temperature maintains at 32Ā°f, determine the electrical power (kw) required to (a) operate a reversible heat pump (b) operate a real heat pump with a cop (7) of 4.5 and (c) operate an electrical-resistance heater.
Answers: 3
Engineering, 04.07.2019 19:20
Apreheater involves the use of condensing steam at 100Ā°c on the inside of a bank of tubes to heat air that enters at 1 atm and 25Ā°c. the air moves at 5 m/s in cross flow over the tubes. each tube is 1 m long and has an outside diameter of 10 mm. what is the minimum value of nl needed to achieve an outlet temperature of t 75 c? what is the corresponding pressure drop across the tube bank?
Answers: 3
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