Engineering, 20.08.2019 17:30 rihanna79
Air enters a heat exchanger at a volumetric flow rate of 50 m3/min at 305 k and 100 kpa. air exits at 295 k and 95 kpa (this means that the air stream of the heat exchanger is not ideal, as there is a drop in pressure). r-134a enters the heat exchanger at 0.5 mpa at a quality of 0.2. r-134a exits at 20°c. a. draw the t-v diagram for air. b. draw the p-v diagram for air. c. draw the t-v diagram for r-134a. d. draw the p-v diagram for r-134a. e. determine the mass flow rate of r-134a. f. determine the heat transfer from the air stream in units of kj/min. g. clearly outline every assumption that must be made to determine the mass flow rate and heat transfer.
Answers: 3
Engineering, 04.07.2019 18:10
The thermal expansion or contraction of a given metal is a function of the f a)-density b)-initial temperature c)- temperature difference d)- linear coefficient of thermal expansion e)- final temperature f)- original length
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Engineering, 04.07.2019 18:10
Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.
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Engineering, 04.07.2019 18:10
The flow rate of air through a through a pipe is 0.02 m5/s. a pitot static tube is placed in the flow. the radius of the pitot static tube is 1 mm. assuming the flow to be steady and the air to be at 300k, calculate the difference in total and static pressure if the diameter of the pipe is: (a) d 0.1 m d 0.05 m (c) d 0.01 m
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Engineering, 04.07.2019 18:10
Which from the following instrument is commonly used to detect the high pitch butzing sound in bearings? [clo4] a)-digital ultrasonic meter b)-infrared camera c)-spectroscopic d)-vibrometer
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Air enters a heat exchanger at a volumetric flow rate of 50 m3/min at 305 k and 100 kpa. air exits a...
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