Engineering, 11.10.2019 06:00, vianney84
Agas within a piston–cylinder assembly undergoes a thermodynamic cycle consisting of three processes: process 1–2: compression with pv = constant, from p1 = 100 kpa, v1 = 10 m3 to v2 = 1 m3, u2 - u1 = 100 kj. process 2–3: constant volume to p3 = p1. process 3–1: constant-pressure and adiabatic (no heat transfer) process. if there are no significant changes in kinetic or potential energy complete the following: a. draw a p-v diagram of the process b. determine the net work of the cycle, in kj c. determine the heat transfer for process 2–3, in kj d. is this a power cycle or a refrigeration cycle? if it is a power cycle determine the efficiency. if it is a refrigeration cycle determine the coefficient of performance for a refrigeration cycle.
Answers: 1
Engineering, 04.07.2019 12:10, Ryantimes2
On a average work day more than work place firs are reorted
Answers: 1
Engineering, 04.07.2019 18:10, anna22684
Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.
Answers: 2
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
Answers: 1
Agas within a piston–cylinder assembly undergoes a thermodynamic cycle consisting of three processes...
Mathematics, 24.06.2020 22:01
Mathematics, 24.06.2020 22:01
Mathematics, 24.06.2020 22:01
Mathematics, 24.06.2020 22:01
Mathematics, 24.06.2020 22:01