Engineering, 19.07.2019 22:20 AgentPangolin
Consider an ideal dual cycle that uses air as the working fluid. at the beginning of the compression process, air is at 100 kpa and 50°c, and occupies a volume of 1600 cm. during the heat-addition process, 0.6 kj of heat is transferred to air at constant volume and 1.1 kj at constant pressure. if the cycle has a compression ratio of 14 and accounting for the variation of specific heats with temperature, determine the thermal efficiency of the cycle. also, assuming reasonable temperatures for the source and sink reservoirs, determine the irreversibility of each process. sketch the p-o and the t-s diagrams indicating each states, and heat interactions.(qin, qout).
Answers: 3
Engineering, 03.07.2019 14:10, makaylashrout77
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
Answers: 2
Engineering, 04.07.2019 18:10, krystabrewer3
What are the two (02) benefits, which may result from a successful implementation of preventive maintenance (pm) program in an organization? (clo3)a)- lean manufacturing b)-overlapping responsibilities c)-the planner is not qualified d)-accurate contractor information e)-reduction in equipment redundancies f)-accurate stores information
Answers: 3
Engineering, 04.07.2019 18:10, QueenLife4869
Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.
Answers: 3
Engineering, 04.07.2019 18:20, moneywaydaedae
Air is compressed isentropically from an initial state of 300 k and 101 kpa to a final temperature of 1000 k. determine the final pressure using the following approaches: (a) approximate analysis (using properties at the average temperature) (b) exact analysis
Answers: 1
Consider an ideal dual cycle that uses air as the working fluid. at the beginning of the compression...
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