Engineering, 05.10.2019 14:30 maltipoosarecool
Consider a steam radiator used to heat a room. the radiator is filled with superheated steam at 200 kpa and 200°c. at this moment both the inlet and outlet valves to the radiator are closed. some time later the pressure of the steam is observed to drop to 100 kpa due to the heat transfer from the radiator to the room. a) draw a diagram representing the process showing the initial and final states of the system. b) sketch this process on a t-v (temperature-specific volume) diagram with respect to the saturation lines, critical point, and relevant constant pressure lines, clearly indicating the initial and final states. c) using steam tables determine the specific volume of the steam. d) using steam tables determine the final temperature and quality of the steam (if relevant)
Answers: 2
Engineering, 04.07.2019 18:10
Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?
Answers: 3
Engineering, 04.07.2019 18:10
The higher the astm grain-size number, the coarser the grain is. a)-true b)-false
Answers: 3
Engineering, 04.07.2019 18:10
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
Engineering, 04.07.2019 18:10
At 12 noon, the count in a bacteria culture was 400; at 4: 00 pm the count was 1200 let p(t) denote the bacteria cou population growth law. find: (a) an expression for the bacteria count at any time t (b) the bacteria count at 10 am. (c) the time required for the bacteria count to reach 1800.
Answers: 1
Consider a steam radiator used to heat a room. the radiator is filled with superheated steam at 200...
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