Engineering, 12.12.2019 06:31 joshajgaa
Refrigerant 134a is the working fluid in a vapor-compression heat pump that provides 30 kw to heat a dwelling on a day when the outside temperature is below freezing. saturated vapor enters the compressor at 2.1 bar, and saturated liquid exits the condenser, which operates at 8 bar. determine for an isentropic compressor efficiency of 85%: (a) the refrigerant mass flow rate, in kg/s.; (b) the magnitude of the compressor power, in kw; (c) the coefficient of performance. (
Answers: 2
Engineering, 03.07.2019 14:10
If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.
Answers: 3
Engineering, 04.07.2019 18:10
Which one from below is not one of the reasons of planning failures? (clo3) a)-planner is careless. b-planner spend less time in the field but more time on the desk c)-planner is not qualified d)-planner does not have sufficient time to properly plan
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Engineering, 04.07.2019 18:20
Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above
Answers: 1
Engineering, 04.07.2019 18:20
What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.
Answers: 3
Refrigerant 134a is the working fluid in a vapor-compression heat pump that provides 30 kw to heat a...
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