For a power cycle operating as shown below. The energy transfer by heat into the cycle, Qin is 500 MJ. What is the net work developed, in MJ, if the cycle thermal efficiency is 30 %? What is the value of Qout in MJ.
For a power cycle operating as shown below. The energy transfer by heat into the cycle,...
Problem 2.058 SI The net work of a power cycle operating as in the figure below is 5.000,000 kJ, and the thermal efficiency is 0.5 Hot body SystemH out Cold body Determine the heat transfers Qin and Qout, each in kJ. Qin = Qout = Click if you would like to Show Work for this question: k) k) Open Show Work
(a) (i) For a power cycle, the heat transfers are Qin=60 kJ and Qout=40 kJ. Determine the net work, in kJ, and the thermal efficiency. (ii) A refrigeration cycle operates with a coefficient of performance β=1.5. For the cycle, Qout=500 kJ. Determine Qin and Wcyele each in kJ.(b) A gas within a piston-cylinder assembly undergoes a thermodynamic cycle consisting of three processes:Process 1-2: Compression with p V= constant, from p₁=1 bar, V₁=1.6 m³ to V₂=0.2 m³, U₂-U₁=0.Process 2-3: Constant pressure to...
A concentrating solar collector system, as below, provides energy by heat transfer to a power cycle at a rate of 2 MW. The cycle thermal efficiency is 36%. Determine the power developed by the cycle, in MW. What is the work output, in MW*h, for 4380 hours of steady-state operation? If the work is valued at $0.08/kW-h, what is the total dollar value of the work output?
A concentrating solar collector system, as shown in the figure below, provides energy by heat transfer to a power cycle at a rate of 2 MW. The cycle thermal efficiency is 40.00%. – Receiver Power cycle Atmosphere Molten salt or oil TA Wade LPump Determine the power developed by the cycle, in MW. What is the work output, in MW. h, for 4380 hours of steady-state operation? If the work is valued at $0.08/kw.h, what is the total dollar value...
Problem 2) A heat pump cycle whose coefficient of performance is 2.5 delivers energy by heat transfer to a dwelling at a rate of 20 kW. (a) Determine the net power required to operate the heat pump, in kW. (b) Evaluating electricity at $0.08 per determine the cost of electricity in a month when the heat pump operates for 200 hours. Problem 3) A power cycle receives energy by heat transfer from the combustion of fuel at a rate of 300 MW. The thermal efficiency...
As shown in the figure, a reversible power cycle receives energy QH by heat transfer from a hot reservoir at TH and rejects energy QC by heat transfer to a cold reservoir at TC. a) If TH = 1600 K, TC = 400 K, what is the thermal efficiency? b) If TH = 500oC, TC = 20oC, and Wcycle = 1000 kJ, what are QH and QC, each in kJ? c) If ? = 60% and TC = 40oF, what...
2. The thermal efficiency of a power cycle is 37.5% and the heat rejected to a cold reservoir is 40 MJ. Determine the net work done by the cycle. [7 points]
Problem 4 In the vapor power cycle shown below, steam (H20) is the working fluid. Saturated vapor enters the turbine at 100 bar and saturated liquid exits the condenser at a pressure of 0.1 bar. The net power output of the cycle, Weycle, is 150 MW. Isentropic efficiency of the turbine and the pump (n (hi-h2)/(h1-h2s), np=(h25-h1)/(h2-h1)) are both 80%. Determine the followings. [30 pts] (a) Thermal efficiency, n (b) Mass flow rate of the steam, m, in kg/s (c)...
A power cycle operating between two thermal reservoirs receives energy QH by heat transfer from a hot reservoir at TH = 2000 K and rejects energy QC by heat transfer to a cold reservoir at TC = 400 K. For each of the following cases determine whether the cycle operates reversibly, operates irreversibly, or is impossible. (a) QH = 1000 kJ, ƞ = 60% (b) QH = 1000 kJ, Wcycle = 850 kJ (c) QH = 1000 kJ, QC =...
A reversible power cycle whose thermal efficiency is 40% receives 50 kJ by heat transfer from a hot reservoir at 600 K and rejects energy by heat transfer to a coldreservoir at temperature Tc. Determine the energy rejected in KJ