An ideal diesel engine has a compression ratio of 20 and uses air as the working fluid. The state of air at the beginning of the compression process is 95 kPa and 20oC. If the maximum temperature in the cycle is not to exceed 2200 K, determine (a) the thermal efficiency and (b) the mean effective pressure. Assume constant specific heats for air at room temperature.
Answers: 3
Physics, 22.06.2019 00:00
Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.
Answers: 2
Physics, 22.06.2019 09:00
Yvette hangs a 2.4kg bird feeder in the middle of a rope tied between two trees. the feeder creates a tension of 480 n in each side of the the rope.
Answers: 1
Physics, 22.06.2019 13:30
6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.
Answers: 3
Physics, 22.06.2019 21:50
Ajoint produces movement when its angle decreases. which type of movement is it?
Answers: 1
An ideal diesel engine has a compression ratio of 20 and uses air as the working fluid. The state of...
Computers and Technology, 12.12.2020 15:50
Engineering, 12.12.2020 15:50
Mathematics, 12.12.2020 15:50
History, 12.12.2020 15:50
English, 12.12.2020 15:50
Mathematics, 12.12.2020 15:50
English, 12.12.2020 15:50
Mathematics, 12.12.2020 15:50
Health, 12.12.2020 15:50
History, 12.12.2020 15:50
English, 12.12.2020 15:50