A 650 MW steam power plant has an efficiency of 62%.it is cooled by rejecting heat to a nearby river. The rate of heat transfer to the river is MW. D 642.5 O 1274.5 О 398.39
Q: A heat engine is operating on a Carnot cycle and has a thermal efficiency of 55 percent. The waste…
A: Given data the thermal efficiency of Carnot cycle (η) = 55% or 0.55 heat rejected (Q˙r) = 800…
Q: Consider a facility that has a 130-kW compressor that runs 4400 h/yr at an average load factor of…
A: Given data: *The power of the compressor is P=130 Kw. *The time rum by the compressor in a year is…
Q: A heat engine is operating on a Carnot cycle and has a thermal efficiency of 55 percent. The waste…
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Q: A heat engine is operating on a Carnot cycle and has a thermal efficiency of 75 percent. The waste…
A: Write the formula for the conversion of the lake temperature into the Kelvin scale. Here, tL is the…
Q: A Carnot heat pump is to be used to heat a house and maintain it at 25°C in winter. On a day when…
A: Convert the temperature of surroundings or the sink into Kelvin. Here, tL is the temperature of the…
Q: A heat engine operates between a source at 478.72 C and a sink at 26.12 C. If heat is supplied to…
A:
Q: A heat engine is operating on a Carnot cycle and has a thermal efficiency of 55 percent. The waste…
A: Given data: η=55%TL=60°CQR˙=900 kJ/min Need to determine the power output of the engine.
Q: A heat engine receives heat from a source at 1000°C and rejects the waste heat to a sink at 50°C. If…
A: Given data :TH=1000°C=1273KTL=50°C=323KQin=100 KJS
Q: A heat engine is operating on a Carnot cycle and has a thermal efficiency of 47 percent. The waste…
A: Given: The thermal efficiency of the Carnot cycle is η=0.47 The rate at which heat is rejected to…
Q: A heat engine operates on the Carnot cycle, and has a thermal efficiency of 75 percent. The waste…
A: Given data: η=75%TL=15°CQR=14 kW Need to determine the power output of the motor and the temperature…
Q: In a gas turbine, the temperature of the working fluid at inlet to the compressor is 286 K and…
A: The gas turbine cycle consists of four thermodynamic processes as follows: 1-2: Work output from…
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: In a heat engine operating in a cycle between a source temperature of 606°C and a sink temperature…
A: Heat engine is a thermodynamic equipment which converts the thermal heat energy into useful work.…
Q: A heat engine is operating on a Carnot cycle and has a thermal efficiency of 55 percent. The waste…
A: To find out the power output Heat rejected = 800 BTU/min…
Q: Refrigerant-134a enters the condenser of a residential heat pump at 800 kPa and 358C at a rate of…
A: Inlet pressure = 800 kpa Inlet temperature = 35 C mass flow rate = 0.018 kg/m3 Exit pressure = 800…
Q: A heat pump is used to maintain a space at 25 C during winter while the outdoor temperature is 10 C.…
A:
Q: A well-established way of power generation involves the utilization of geothermal energy—the energy…
A: Solution: We begin by sketching our device interactions High-Temperature Heat Reservoirat TH =…
Q: A power plant is operating with a heat-source reservoir at 350°C and a heat-sink reservoir at 30°C.…
A: Given data: The initial temperature of the heat source, TH = 350°C. The temperature of the sink…
Q: Refrigerant-134a enters the condenser of a residential heat pump at 800 kPa and 35°C at a rate of…
A: Given data: Inlet pressure, P1 = 800kPa Inlet temperature, T1 = 35°C Flow rate, m = 0.018 kg/s Exit…
Q: An Ocean Thermal Energy Conversion (OTEC) power plant built in Hawaii in 1987 was designed to…
A: Mass flow rate can be determined as Rate of heat rejection to cooling water is
Q: 11. A Carnot engine rejects 80 MJ of energy every hour by transferring heat to a reservoir at 10°C.…
A:
Q: A heat engine that receives heat from a furnace at 1200°C and rejects waste heat to a river at 20°C…
A: Given data TH=1200 °c=1473 KTo=20 °c=293 Kηth=0.4
Q: Calculate the net work output of a heat engine following path ABCDA in the figure below.
A: The net work output of the heat engine is the area enclosed in the cycle ABCDA on P-V diagram.…
Q: Define as energy systems that have the capability to produce two useful outputs simultaneousty.…
A: Define as energy systems that have the capability to produce two useful outputs simultaneously.
Q: Refrigerant-134a enters the condenser of a residential heat pump at 1.6 MPa and 80°C at a rate of…
A: Given Pressure, P = 1.6 MPa Power, P = 2.3 kW
Q: Source TH Carnot HE net,out 800 Btu/min
A:
Q: A Carnot heat engine receives heat from a reservoir at 1200°C at a rate of 800 kJ/min and rejects…
A:
Q: A heat pump is used to meet the heating requirements of a house and main- tain it at 20°C. On a day…
A: Given Data Temperature of house is : TH=20°C=293 K Outside temperature is :TL=-2°C=271 K Heat loss…
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: During a 24-hour operation of a Diesel power plant, it consumed 200 gallons of 25oAPI fuel at 28oC…
A:
Q: Obtain a relation for the second-law efficiency of a heat engine that receives heat QH from a source…
A: Given: The heat received from the source is QH. The heat rejected at the sink is QL. The…
Q: Q1: A particular power plant operates with a heat-source reservoir at 370°C and a heat sink…
A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…
Q: In a gas turbine, the temperature of the working fluid at inlet to the compressor is 286 K and…
A: T1 = 286 K T2 = 430 K T3 = 1087 K T4 = 737 K
Q: A Carnot heat pump is to be used to heat a house and maintain it at 25°C in winter. On a day when…
A: The COP of the heat pump can be determined as shown below.
Q: A heat engine is operating on a Carnot cycle and has a thermal efficiency of 47 percent. The waste…
A: Given: The efficiency of the Carnot cycle is η=0.47. The nearby lake temperature is T1=60°F. The…
Q: The net work output of this power plant is simply the difference between the total work output of…
A: The work-producing device that best fits into the definition of a heat engine is the steam power…
Q: A completely reversible heat pump has a COP of 1.6 and a sink temperature of 300 K. Calculate the…
A: Given: The coefficient of the performance of the heat pump is COP=1.6. The temperature of the sink…
Q: B. A Carnot heat engine, shown in Fig. below, receives 400 kJ of heat per cycle from a…
A: Given question belongs to the subject Engineering Thermodynamics from the topic Second Law of…
Q: A heat engine receives heat from a source at 1500 K at a rate of 600 kJ/s and rejects the waste heat…
A: As per the calculation the nearest option is 83%.
Q: How does a geothermal power plant generate electricity? Explain on the basis of heat transfer and…
A: Given: Explain a geothermal power plant on the basis of energy transformation to generate…
Q: A heat pump is used to heat a house and maintain it at 24°C. On a winter day when the outdoor air…
A: Given: The temperature of house is T1=24°C. The outdoor air temperature is T2=-5°C. The rate of loss…
Q: A heat engine is operating on a Carnot cycle and has a thermal efficiency of 50 percent. The waste…
A: Given:- Thermal efficiency = 50℅ Sink Temperature (TL) = 60°F Heat rejected to sink = 800 BTU/min…
Q: A typical electric water heater has an efficiency of 95 percent and costs $350 a year to operate at…
A: Given data: *The efficiency of the electric water heater is η=95%. *The operating cost of the heater…
Q: A room measures 4mx7mx5m and the air in it has to be always kept 20 C0 lower than that of the…
A:
Q: Calculate the net work output of a heat engine following path ABCDA in the figure below, where V1…
A: Divide the curve into two triangles. Now the net work output of a heat engine is equal to the sum…
Q: A freezer sustains a cold environment of -24°C and exhausts its heat at 36°C. Assume a Carnot cycle.…
A:
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- A split air conditioner is used to heat an office in winter and cool it in summer.For this purpose, a split air conditioner with a cooling power of 1200 Btuh (3.5 kw) is used for the office. The power drawn by the split air conditioner is 1.2 kw accordingly. a) COP value b) If the outdoor temperature of the air conditioner is kept 22 C in summer, calculate the limit values for heating and cooling COP if the outdoor temperature in summer is 42C and the outside temperature in winter is -6CQuestion 10 Consider a residential heat pump use to maintain the inside air temperature of the house at 23C. Assuming Carnot assumptions, estimate the minimum power requirements (kW) if the outside temperature is OC and the house requires 1 kW of heating per temperature difference between the indoors and the outdoors temperatures (C). 2.392 12.87 1.163 1.7873. A simple steam power plant illustrated below uses 20 kg/s of steam. Find: a) the boiler heat transfer rate; b) the turbine power output; c) the condenser duty; d) the pump power required. What is the ratio of net power out to heat in (the thermal efficiency)? The turbine and the pump are adiabatic 2 Boiler Pump 2 3 |3|4 Stream T(°C) P(MPa) 40 40 Turbine 600 x = 1 Condenser 0.01 10 10 0.01 A
- 1. A geothermal heat pump with a COP of 1.3 provides 48000 BTU/hr of heat to a building. Assuming an electrical power rate of $0.20/kWh. answer the following questions for this system: a. What would be the monthly cost to provide heat at a rate of 48000 BTU/hr if the heat was delivered by a simple electrical resistance heater? b. How much heat is drawn from the ground by the heat pump in that month, in kWh? c. What is the savings per month enjoyed by operating this heat pump for a month vs. a simple electrical resistance heater?A refrigeration unit with COP = 3.8 is being used to remove heat from a particular machine by 0.42 kg/s of water (C, = 4.18 kJ/kg.K) at 20 °C that is chilled from 40 °C as shown in the Figure. What is the power input (in kW) to the refrigeration unit? Select one: O 11.15 1 2 10.97 9.24 REF TH O 13.26 QH O 14.63 O 12.321.)A heat engine is operating on a Carnot cycle and has a thermal efficiency of 58.65 percent. The waste heat from this engine is rejected to a nearby lake at 63.41 F at a rate of 823.19 Btu/min. Determine the temperature (R) of the source. 2.)A heat pump operates on a Carnot heat pump cycle with a COP of 8.87. It keeps a space at 27.97 C by consuming 2.52 kW of power. Determine the heating load (kW) provided by the heat pump.
- A 45 MW thermal power plant, which receives 80 MW of heat from a thermal source of 440 ℃ terk, leaves the heat to the 18 river next to it. What will be the real thermal efficiency of a thermal power plant?For a power system operates with Wcycle = 810 BTU and Qout = 1769 BTU. What is the thermal efficiency?Problem An electric heater is to heat 18 kg of oil per min. from 24.5 °C to 185.5 °C. Specific heat of oil is 2.018 KJ/kg- °C.Calculate the power consumed by the heater. Ans. Problem The overall efficiency of an electric system, coal pile to lights a lamp is What fraction of a kg of coal containing 1350 W lamp for 45 minutes? 97.4694 Kw 18 %. 10250 KJ/kg must be consumed to light a Ans. 1.976 KJ
- Air inlet to a gas turbine has conditions 275.79 kPa, 54.44°C while the outlet has conditions 14.7 psia and 26.67°C. How much heat is lost from the turbine if 8 Btu of work is produced per lbm of air. Cp air = 3.5R. R = 1.9859 Btu/lbmol-oR. a.3.98 Btu per lbm of the gas b.10.24 Btu per lbm of the gas c.None of the choices d.4.41 Btu per lbm of the gasA heat pump with COP of 2.0 is used to heat water to 90 oC for cleaning purpose. This heat pump absorb heat from surrounding at 30 oC and received the entire power, ̇ from a Carnot heat engine operating between 200 oC and 25 oC. The Carnot heat engine received 6.3 kW of heat from the high temperature source. i) Draw the schematic diagram of the above system. ii) Determine the power received by the heat pump, ̇ from Carnot heat engine, kW. iii) Calculate the rate of heat supplied to the water by the heat pump, kW. iv) Determine the COP of the heat pump if it operates on a reversed Carnot cycle.With a 1 kW pump, the energy leakage per unit time is 0.6 kW for a 1 ℃ temperature difference between a house to be heated and the outside environment. Coefficient of performance of the heat pump used to keep this house at a constant temperature of 20 ℃; If it is up to the theoretical heat pump performance coefficient; What is the minimum outdoor temperature ℃ for this heat pump to meet its needs and be used?