subject
Engineering, 17.12.2019 01:31 moose12002

In a vapor-compression refrigeration cycle, ammonia exits the evaporator as saturated vapor at -22°c. the refrigerant enters the condenser at 16 bar and 160°c, and saturated liquid exits at 16 bar. there is no significant heat transfer between the compressor and its surroundings, and the refrigerantpasses through the evaporator with a negligible change in pressure. if the refrigerating capacity is 150kw, determine: (a) the mass flow rate of the refrigerant, in kg/s.(b) the power input to the compressor, in kw.(c) the coefficient of performance.(d) the isentropic compressor efficiency(e) the rate of entropy production, in kw/k, for the compressor.

ansver
Answers: 3

Another question on Engineering

question
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
question
Engineering, 04.07.2019 18:10
Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k
Answers: 2
question
Engineering, 04.07.2019 19:20
Amass-spring-viscous damper system of mass 3 kg has a frequency of 100 rad/s and is critically damped. its initial conditions are x(0)-3 mm and (0)-2.3 m/s. does the system overshoot its equilibrium position? prove your answer
Answers: 1
question
Engineering, 06.07.2019 02:30
On solidification from a melt, the polymer polyethylene forms a semi-crystalline spherulite structure. (i) sketch an individual spherulite and label the amorphous and crystalline regions. (ii) draw a schematic to show the changes in specific volume with temperature during cooling from the melt, comparing it to the theoretical extremes of fully crystalline and fully amorphous (indicate tm and tg)
Answers: 2
You know the right answer?
In a vapor-compression refrigeration cycle, ammonia exits the evaporator as saturated vapor at -22°c...
Questions
question
History, 22.09.2019 13:50
question
English, 22.09.2019 13:50
question
Health, 22.09.2019 13:50
question
Mathematics, 22.09.2019 13:50