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· 1-5 · 6-10 · 11-15 · 16-20 · 21-25 · 26-30 · 31-35 · 36-40 · 41-45 · 46-50 · 51-55 ·Calculating thermal efficiency and mean effective pressure from the Rhino Cycle.
The Rhino Cycle is the basis for the engine which powers the Rhino Car. The cycle consists of: 1-2: Isentropic compression from 1.0 bar and 300K to 10 bars 1-3: Constant pressure heat addition of 850 KJ/KG 3-4: Isothermal expansion to 9 bars 4-5: Isentropic expansion to 1.0 bar 5-1: Constant pressure cooling Determine the cycle thermal efficiency and the mean effective pressure.
Subject:
Mechanical and Materials Engineering
Topic:
Thermodynamics
Posting ID:
2907
OTA ID:
102833
Calculating temperature, water evaporation, and heat in a power plant cooling situation.
In a nuclear power plant the cooling tower system must be run on a closed cycle. That is, the air exiting the tower passes over cooling coils to return it to its initial condition prior to reentering the tower. Air at 20C and 40% relative humidity enters the tower at a rate of 1.3 x 106 kg/sec. Water enters the tower at 50C and leaves at 25C. The water flow rate is 750,000 kg/sec. Saturated air exists the tower and passes over cooling coils which returns it to 20C and 40% relative humidity. Water at 22C condenses out of the air. Determine: A) The temperature of air leaving the tower B) Amount of water evaporating in kg/sec. C) The heat removed by the cooling coils in kW
Subject:
Mechanical and Materials Engineering
Topic:
Thermodynamics
Posting ID:
2908
OTA ID:
102833
In a chemical plant one of the products produced is carbon monoxide, CO. It is proposed to utilize this CO by reacting it with water to form hydrogen gas. The "unbalanced" chemical equation is CO + H2O CO2 + H2 If the CO and H2O come into the reaction chamber at 0.1 MPa and 400 K, what is the required heating for an isothermal reaction?
Subject:
Mechanical and Materials Engineering
Topic:
Thermodynamics
Posting ID:
2909
OTA ID:
103034
Thermodynamics Brayton cycle and gas turbine problem.
A large stationary Brayton cycle gas-turbine power plant delivers a power output of 100MW to an electric generator. The minimum temperature in the cycle is 300K, and the maximum temperature is 1600K. The minimum pressure in the cycle is 100 kPa, and the compressor pressure ratio is 14 to 1. The compressor has an isentropic efficiency of 94% and the turbine and isentropic efficency of 89%. Calculate the power output of the turbine. What fraction of the turbine output is required to drive the compressor? What is the thermal efficiency of the cycle?
Subject:
Mechanical and Materials Engineering
Topic:
Thermodynamics
Posting ID:
3555
OTA ID:
103034
A diesel engine has air before compression at 280 K and 85 Kpa. The highest temperature is 2219 K and the highest pressure is 6 MPa. Find the volumetric compression ratio and the mean effective pressure using cold air properties at 300K.
Subject:
Mechanical and Materials Engineering
Topic:
Thermodynamics
Posting ID:
3661
OTA ID:
101327
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