Engineering, 22.02.2020 02:53, rianna14
The steady-state data listed below are claimed for a power cycle operating between hot and cold reservoirs at 1200K and 400K, respectively. For each case, evalutate the net power developed by the cycle, in kW, and the thermal efficiency. Also in each case apply below equation on a time-rate basis to determine whether the cycle operates reversibly, operates irreversibly, or is impossible.
Equation: ∫ (SQ / T)b = -σ cycle
(a) QH = 600 kW, QC = 400 kW
(b) QH = 600 kW, QC = 0 kW
(c) QH = 600 kW, QC = 200kW
Answers: 2
Engineering, 03.07.2019 14:10, aliceohern
The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite
Answers: 3
Engineering, 04.07.2019 18:10, ahmedeldyame
Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.
Answers: 1
Engineering, 04.07.2019 18:10, soreese02
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
Engineering, 04.07.2019 18:10, oshawn108
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
The steady-state data listed below are claimed for a power cycle operating between hot and cold rese...
Mathematics, 30.03.2021 23:20
Biology, 30.03.2021 23:20
Mathematics, 30.03.2021 23:20