Engineering, 07.08.2019 19:20, jimena15
Refrigerant 134a is the working fluid for vapor-compression refrigeration cycle. the evaporator temperature is 8°c and the condenser pressure is 12 bar. saturated vapor enters the compressor and superheated vapor enters the condenser at 60°c and exits the condenser as saturated liquid. for a refrigeration capacity of 8 tons or 2.816 x104 j/s determine the following: (1) the refrigerant mass flow rate in kg/s; (2) the compressor isentropic efficiency (hint: interpolation is required); (3) the compressor power in kw; (4) the system coefficient of performance; and (5) sketch the ts diagram.
Answers: 1
Engineering, 04.07.2019 18:10, qwertylol12345
Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.
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Engineering, 04.07.2019 18:10, lowkeyqueenk
Apipe with an outside diameter of 15 cm is exposed to an ambient air and surrounding temperature of -20°c. the pipe has an outer surface temperature of 65°c and an emissivity of 0.85. if the rate of heat loss from the pipe surface is 0.95 kw per meter of length, the external convective heat transfer coefficient (h) is: (a) 12.5 w/m"k (b) 18.6 w/mk (c) 23.7 w/mk (d) 27.9 w/mk (e) 33.5 w/mk
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Engineering, 04.07.2019 18:10, Tyrant4life
Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.
Answers: 1
Engineering, 04.07.2019 18:10, Strick1530
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.
Answers: 2
Refrigerant 134a is the working fluid for vapor-compression refrigeration cycle. the evaporator temp...
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