A heat engine operates between a source at 477°C and a sink at 25°C. If heat is supplied to the heat engine at a steady rate of 65,000 kJ/min, determine the maximum power output of this heat engine.
Q: On a hot summer day, the air in a well-sealed room is circulated by a 0.50-hp fan driven by a 65…
A: Write the expression of the conversion of units.
Q: A heat engine receives heat from a source at 10000C and rejects the waste heat to a sink at 50 0C.…
A:
Q: What is the second-law efficiency? How does it differ from the first-law efficiency?
A: Before understanding the first and second law efficiency and the difference we have to understand…
Q: A steam power plant receives heat from a furnace at a rate of 280 GJ/h. Heat losses to the…
A: Given Rate of heat = 280 GJ/h Heat loss rate = 8 GJ/h Cooling rate of water = 165 GJ/h To find Net…
Q: A heat engine that rejects waste heat to a sink at 510 R has a thermal efficiency of 25 percent and…
A: Given Data: The temperature of the sink is TL = 510 R The temperature of the source is TH. The…
Q: Consider a Carnot heat-engine cycle executed in a closed system using 0.025 kg of steam as the…
A:
Q: three consecutive carnot engines were designed in such a way that the efficiencies are equal.…
A:
Q: Consider a heat engine operating between a high thermal reservoir at 500oC and a low thermal…
A: GivenT1=500oC=773KT2=10oC=283KW=325kWQr=200kW
Q: A dealer advertises that he has just received a shipment of electric resistance heaters for…
A: Given data
Q: A Carnot heat engine operates between a source at 1000 K and a sink at 300 K. If the heat engine is…
A:
Q: A 600-MW steam power plant, which is cooled by a nearby river, has a thermal efficiency of 40…
A: Given The power output of steam power plant = 600 MW ηt = 40 percent To determine Amount of…
Q: A 1000 MW steam power plant, which is cooled by a river, has a thermal efficiency of 50 percent.…
A:
Q: A 90-hp (shaft output) electric car is powered by an electric motor mounted in the engine…
A: Given Output energy, E2 = 90 hp Efficiency = 91% =…
Q: Real heat engines, like the gasoline engine in a car, always have some friction between their moving…
A: A heat engine is a device that converts thermal energy into mechanical energy. There are two types…
Q: 2.) The following heat engine produces 80,000 kW. Determine in each case the rates at which heat is…
A:
Q: . A geothermal-based trigeneration plant produces 2.5 MW of electricity, 1.8 MW of process heat, and…
A: To determine the utilisation factor for the given geothermal plant.
Q: Consider two Carnot heat engines operating in series. The first engine receives heat from the…
A:
Q: A thermodynamicist claims to have developed a heat pump with a COP of 1.7 when operating with…
A: Given data as per question Lower temperature = 273 k Higher temperature 293 k
Q: Does a power plant that has a higher thermal efficiency necessarily have a higher second-law…
A:
Q: How does the efficiency of an idealized automobile engine depend on the operating temperature of the…
A: Draw the PV diagram of the heat engine.
Q: A heat engine receives heat from a source at 1100 K at a rate of 400 kJ/s, and it rejects the waste…
A: Given: The temperature of the source is T1=1100 K. The temperature of the medium is T2=320 K. The…
Q: An engineer, in his work on the heat engine, determined that the heat engine received 500 kJ of heat…
A: Write the given data with suitable variables. Q1=500 kJT1=700 KQ1-Q2=240 kJT2=370 K
Q: A steam power plant of 40% thermal efficiency receives heat of 150 MJ at high temperature while…
A:
Q: The Dipping Bird Machine experiment:explain the dipping bird machine motion in the context of a…
A:
Q: Refrigerant-134a enters the evaporator coils placed at the back of the freezer section of a…
A: Given: The inlet pressure of the refrigerant is P1=100 kPa. The quality of the refrigerant is…
Q: A 160 MW power plant consumes fuel at a rate of 60 tons/h. if the chemical energy released by the…
A:
Q: 5.) Does a refrigerator full of food consume more power if the room temperature is 200C than if it…
A:
Q: Consider two Carnot heat engines operating in series. The first engine receives heat from the…
A: Given Data T1=1400 K T3=300 K
Q: What are the energy types in a closed and open system?
A: Given: Closed and open system Energy types in closed and open system.
Q: What is a second law efficiency? How does it differ from a first law efficiency?
A: As per the guidelines, 1st question is answered.
Q: A carnot device extracts 5.00 kJ of heat from a body at -10.00C. How much work is done if the device…
A: Given details: Th = 25 C =298 K TC = -10 C =263 K W = 5 kJ Note: Inbuilt Math type not work so…
Q: A heat engine cycle is executed with steam in the saturation dome between the pressure limits of 7…
A: Given: The minimum pressure of the heat engine cycle is P1=2 MPa. The maximum pressure of the heat…
Q: Waternearthesurfaceofatropicaloceanhasatemperatureof25°C, while water 700 m beneath the surface has…
A: Let, Th be the surface high temperature of ocean. Ts be the temperature 700m beneath the surface.…
Q: Explain the principle of refrigerator? Show that a reversible heat engine acts as a refrigerator.
A: Principle of refrigeration: Refrigeration is the cooling of a system below the temperature of its…
Q: 22. Two (2) Carnot engines are arranged in the manner that the latter engine receives the heat…
A: Given Data: Temperature limits of both engines, 35 C and 400 C
Q: Demonstrate the validity of the Clausius inequality using a reversible and an irreversible heat…
A: Let's take two thermal engines R & IR as reversible and irreversible heat engine respectively.…
Q: A Carnot heat engine operates between a source at 1000 K and a sink at 300 K. If the heat engine is…
A: Given: The temperature of the source is TH=1000 K. The temperature of the sink is TL=300 K. The rate…
Q: A heat pump is to be used to heat a house during the winter. The house is to be maintained at )21°C(…
A: Given Data The outside temperature is , TH=21°C Heat losing rate 135MJ/h Outside temperature drops,…
Q: A steam power plant receives heat from a furnace at a rate of 280 GJ/h. Heat losses to the…
A: Given: The rate of heat receives by the steam power plant is Q1=280 GJ/h. The rate of heat losses to…
Q: Two (2) Carnot engines are arranged in the manner that the latter engine receives the heat rejected…
A:
Q: Determine the maximum possible thermal efficiency of the power plant, and the maximum power output
A: Given : TH=80°C=80+273=353°K TL=30°C=30+273=303°K Qs=1 KJ/s
Q: Two (2) Carnot engines are arranged in the manner that the latter engine receives the heat rejected…
A:
Q: Determine the minimum work per unit of heat transfer from the source reservoir that is required to…
A: To find The minimum work required to drive a heat pump W. Given The temperature of the sinkTh is…
Q: Two (2) Carnot engines are arranged in the manner that the latter engine receives the heat rejected…
A: Option D is correct and steps are given under:
Q: An innovative way of power generation involves the utilization of geothermal energy—the energy of…
A:
Q: Consider a Carnot heat-engine cycle executed in a steady-flow system using steam as the working…
A: Given data:
Q: On a hot summer day, the air in a well-sealed room is circulated by a 0.50-hp fan driven by a 65…
A: This question is based on the concept of thermodynamics.
Q: Why does a nonquasi-equilibrium compression process require a larger work input than the…
A: Given Data⇒ Non quasi-equilibrium compression process quasi-equilibrium compression process
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- Þetermine the maximum possible efficiency of the heat engine shown below. Also find the maximum possible work output in kW and hp as well as the waste heat in kw. If this ideal heat engine is operating with an ideal gas and the outlet pressure is 100 kPa, what is the pressure of the high temperature reservoir? T= 600-C Q = 900 kJ/s Engine Tz = 50°C %3!A refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapor compression refrigeration cycle between 0.18 and 0.7 MPa. The mass flow rate of the refrigerant is 72.4 g/s. Determine the power input to the compressor (in kW). Do not answer in image formatA refrigerating system has a load of 50 kJ/s uses ammonia as working fluid. The refrigerated space is kept at a temperature of –30°C. Condensing pressure is at 1.0 MPa. The ammonia refrigerant exits the evaporator with 5-degree superheat and at 160 kPa. Superheated refrigerant is discharged from the compressor at a temperature of 140°C. Wire drawing at the compressor suction is 5 kPa and the compressor discharge is 20 kPa. If the overall mechanical efficiency is 82%, determine the power input to the compressor.
- NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 18°C at a rate of 0.28 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and -34°C and the compressor is estimated to gain a net heat of 420 W from the surroundings. The heat exchanger loses no heat to the environment. 26°C 42°C ↑ 4 Condenser Expansion valve Evaporator QL Water 18°C 1.2 MPa 65°C ↑gin Win Compressor 60 kPa -34°C Determine the theoretical maximum refrigeration load for the same power input to the compressor. The theoretical maximum refrigeration load for the same power input to the compressor is KW.NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 18°C at a rate of 0.28 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and -34°C and the compressor is estimated to gain a net heat of 420 W from the surroundings. The heat exchanger loses no heat to the environment. 26°C↑ 42°C 1 (3) Expansion valve Condenser Evaporator QL Water 1.2 MPa 65°C ↑lin Win Compressor 60 kPa -34°C Determine the refrigeration load. (Take the required values from saturated refrigerant-134a tables and steam tables.) (You must provide an answer before moving on to the next part.) The refrigeration load is 6.273 ✪ KW.NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 18°C at a rate of 0.28 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and -34°C and the compressor is estimated to gain a net heat of 420 W from the surroundings. The heat exchanger loses no heat to the environment. 26°C 42°C Condenser Expansion valve Evaporator OL Water 18°C 1.2 MPa 65°C Oin W in Compressor 60 kPa -34°C Determine the COP of the refrigerator. (You must provide an answer before moving on to the next part.) The COP of the refrigerator is 1.824 >
- NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 18°C at a rate of 0.28 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and -34°C and the compressor is estimated to gain a net heat of 420 W from the surroundings. The heat exchanger loses no heat to the environment. 26°C 42°C I Condenser Expansion valve Evaporator QL Water 18°C 1.2 MPa 65°C Qin Win Compressor 60 kPa -34°C Determine the COP of the refrigerator. (You must provide an answer before moving on to the next part.) The COP of the refrigerator isNOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 18°C at a rate of 0.28 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and -34°C and the compressor is estimated to gain a net heat of 420 W from the surroundings. The heat exchanger loses no heat to the environment. 26°C↑ 42°C 3 Expansion valve 4 Condenser ↓ Evaporator Water 18°C OL (2) KW. (1 1.2 MPa 65°C ↑in in Compressor 60 kPa -34°C Determine the refrigeration load. (Take the required values from saturated refrigerant-134a tables and steam tables.) (You must provide an answer before moving on to the next part.) The refrigeration load isNOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 18°C at a rate of 0.28 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and -34°C and the compressor is estimated to gain a net heat of 420 W from the surroundings. The heat exchanger loses no heat to the environment. 26°C 42°C Expansion valve 4 Condenser ↓ Evaporator Water 18°C QL 1.2 MPa 65°C Qin W in Compressor 60 kPa -34°C Determine the quality of the refrigerant at the evaporator inlet. (Take the required values from saturated refrigerant-134a tables.) (You must provide an answer before moving on to the next part.) The quality of the refrigerant at the evaporator inlet is
- NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling water that enters the condenser at 18°C at a rate of 0.29 kg/s and leaves at 26°C. The refrigerant enters the condenser at 1.2 MPa and 65°C and leaves at 42°C. The inlet state of the compressor is 60 kPa and -34°C and the compressor is estimated to gain a net heat of 430 W from the surroundings. The heat exchanger loses no heat to the environment. Water 26°C 18°C 1.2 MPa 42°C 65°C (2 t ein (3 Condenser Expansion valve in Evaporator Compressor 60 kPa -34°C 4 Determine the quality of the refrigerant at the evaporator inlet. (Take the required values from saturated refrigerant-134a tables.) (You must provide an answer before moving on to the next part.) The quality of the refrigerant at the evaporator inlet isA refrigeration plant for food storage operates as a reversed carnot heat engine cycle. The store is to be maintained at -5°C and the heat transfer from the store to the cycle is at the rate of 5 kW. If heat is transferred from the cycle to the atmosphere at a temperature of 25°C, the power required to drive the plant is _kW (Important - Enter only the numerical value in the answer) Answer1. An ideal-gas refrigeration cycle uses air as the working fluid to maintain a refrigerated space at - 30°C while rejecting heat to the surrounding medium at 30°C. If the pressure ratio of the compressor is 3 and the polytropic index is 1.3 for both compressor and expander, determine the minimum temperature in the cycle for a mass flow rate of 0.03 kg/s. °C