Q14//A surface condenser receives exhaust steam at 0.14 bar from an engine developing 180 kW. The circulating water enters the condenser at 15°C and leaves at 40°C. The final temperature of the condenser steam is 50°C. If the engine consumes 9 kg of steam per kW per hour, determine the quality of the steam entering the condenser, if the weight of circulating water per hour is 31600 kg. (Answer: x=0.85) *****

Q14//A surface condenser receives exhaust steam at 0.14 bar from an engine developing 180 kW. The circulating water enters the condenser at 15°C and leaves at 40°C. The final temperature of the condenser steam is 50°C. If the engine consumes 9 kg of steam per kW per hour, determine the quality of the steam entering the condenser, if the weight of circulating water per hour is 31600 kg. (Answer: x=0.85) *****

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Ammonia refrigerant circulates in a refrigeration system with one compressor serving two evaporators where one evaporator carries a load of 35 kW at 10°C and the other a load of 70 kW at -5°C. A back pressure valve reduces the pressure in the 10°C evaporator to that of the -5°C evaporator. The condensing temperature is 37°C. Calculate the mass of the refrigerant in kg/s. (Use h₂ = h1 + 203.7586 kJ/kg)
Please provide Handwritten answer
In a steam power plant, steam enters the turbine at 2.5 MPa and 500 C. The condenser pressure is 15 KPa. The turbine and pump isentropic efficiencies are 94 % and 89 %, respectively. Determine the actual net work in kJ/kg. In solving, use two decimal places for the enthalpies/energies while four decimal places for the steam quality. For the final answer, use two decimal places
Refrigerant 134 A enters in a condenser of a heat pump at 180 kPa and -4 0C and exits with a quality of 0.8 and the same pressure of 180 kPa. The mass flow rate of the refrigerant is 65 kg/h, and the heat pump compressor consumes 45 kJ/min of power. Determine the coefficient of performance of the heat pump. Type your answer in the first box.
1) Air enters an adiabatic heat exchanger (HX) with a mass flow rate of 850 kg/s at T₁ = 350°C and P₁ = 110kPa and leaves at T₂ = 60°C and P₂ = 100kPa and transfers heat to water which enters the HX as a saturated liquid at 16MPa. The water mass flow rate is 160 kg/s and it leaves the HX at 15MPa. Air has a constant specific heat of cp = 1.013 kJ/kg . K and specific heat ratio of k = 1.395. Calculate a) the temperature of water at state 4 Hot+ stream + To www ww 3 4 Cold stream
Refrigerant vapor rejects 70 kW of heat as it passes through an air-cooled condenser. The condenser has an air-side area of 210 m2 and, based on this area, has an overall heat transfer coefficient of 0.037 kW/m2∙°C. Cooling air flows at a rate of 7.59 kg/s. If condensation of the refrigerant occurs at 55°C, what is the inlet temperature (in °C) of the air? Take the specific heat of air to be 1.02 kJ/kg∙°C.
in a steam power plant, steam enters the turbine at 3.5 mpa and 600 c. the condenser pressure is 15 kpa. the turbine and pump isentropic efficiencies are 95 % and 94 %, respectively. determine the actual net work in kj/kg. in solving, use two decimal places for the enthalpies/energies while four decimal places for the steam quality. for the final answer, use two decimal places.
Refrigerant-134a enters the condenser of a residential heat pump at 200 kPa and 35°C at a rate of 0.161 kg/s and leaves at 200 kPa as saturated liquid. If the compressor consumes 2.5 kW of power, determine (a) the COP of the heat pump and (b) the rate of heat absorption from outside air COP = 10 657 & QL = 10 998 kW COP = 6 346 & QL = 15 758 kW COP = 12 658 & QL = 12 667 kW COP= 15 773 & QL = 36.931 kW
The heat pump with a power input of 2000 kw draws heat from a heat source at 70° C and gives heat to a boiler. Thanks to the heat given to the boiler, the saturated liquid water entering the boiler at 300 kPa pressure leaves the boiler as saturated steam at 300 kPa (3bar) pressure. Since the performance of the heat pump (y = COPe) is equal to 0.5 times the performance of the Carnot heat pump operating under the same temperature conditions, find the mass flow rate (kg / s) of the water flowing from the boiler. Note: The boiler works according to the open system SASA model. Changes in kinetic and potential energies for the boiler are negligible.
Refrigerant-134a at a rate of 0.08 kg/s enters the compressor of a refrigerator as superheated vapor at 0.18 MPa and 0 ℃ and leaves at 0.9 MPa and 80 ℃. The refrigerant is cooled in the condenser to 31.3 ℃ and 0.8 MPa and it is throttled to 0.18 MPa. Disregarding any heat transfer and pressure drops in the connecting lines between the components, a) Show the cycle on a T-S diagram b) Determine the rate of heat removal from the refrigerated space and the power input to the compressor c) Determine the adiabatic efficiency of the compressor d) Determine the coefficient of performance of the refrigerator.
When a man returns to his well-sealed house on a summer day, he finds that the house is at 35°C. He turns on the air conditioner, which cools the entire house to 20°C in 36 min. If the COP of the air-conditioning system is 2.8, determine the power drawn by the air conditioner. Assume the entire mass within the house is equivalent to 800 kg of air for which cy= 0.72 kJ/kg °C and cp = 1.0 kJ/kg-°C. 35°C 20°C W A/C The power drawn by the air conditioner is kW.
A steam power plant has a high pressure of 2.5 MPa after release from the pump and it maintains 40°C in the condenser. The quality of the stream exiting the turbine is 80%. Solve for the work produced by the turbine and the pump, the heat transfer in the boiler, and heat removed by the condenser. (Answer in kJ/kg)