1.)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.

1.)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.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.46P

See similar textbooks

Related questions

Q: A refrigerator operates on reversed Camot cycle between the temperature limits -10 C and 45 C. The…

A: Given data for refrigerator(R):Lower temperature,TL=-10οC=(-10+273)K=263KHigher…

Q: chine that can produce up to 580 kJ of work by taking waste heat from a melting furnace (temperature…

Q: A heat pump is used to meet the heating requirements of a house and maintain it at 20°C. On a day…

A: As per given Heat pump temprature=20°c Outside temperature =-2°c Heat loss by house =63000kj/h…

Q: A refrigeration cycle having 0.18 MPa (hg = 180.8 kJ/kg) and 0.8 MPa (h = 208.65 kj/kg) The mass…

A: GivenAt 0.18MPa h1=180.8 kJ/kgAt 0.8MPa h2=208.65 kJ/kgm=0.18kg/sQe=18.5kW

Q: 7. A bank of solar cells supplies power to a 95% efficient electric water heater. The area of the…

A: → for the solar cell bankIncident solar flux (Sf)I = 150 w/m2The area of solar cell bank (a) =…

Q: In the closed cycle Ocean Thermal Energy Conversion system, I. surface water of the ocean is used to…

Q: Describe the function and components of a heat engine?

A: An engine that transforms the chemical energy of the fuel into thermal energy which is made used for…

Q: Task 4 A heat pump using refrigerant-134a heats a house by using underground water at 8°C as the…

A: Given: The temperature of underground water, Tw = 8°C The rate of heat loss, Qr = 60,000 kJ/h The…

Q: Round everything to four decimal places. When an air conditioner is reversed it can operate as a…

Q: A heat engine using lake water at 12oC as source and the surrounding atmosphere at 2oC as sink…

Q: What is the total work in K joules of a combined cycle power plant with a given plant efficiency of…

Q: A heat engine is supplied with 278 kJ/s of heat at a constant fixed temperature of 283 °C and the…

Q: Two Carnot engines are hooked up in series so that the waste thermal energy at constant tempera-…

Q: b) A heat pump used to heat a house runs about one-third of the time. The house is losing heat at an…

A: Given Data Ql= 22000 kJ/h CoP= 2.8

Q: An air-conditioner with refrigerant-134a as the working fluid is used to keep a lab at 26°C by…

A: Given DataP1=500kPaP2=1200kPaP=850kWQ=100L/minT1=34°CT2=34°C

Q: An engine in a cycle absorbs 5000 J of heat and discard 1000 J to a cold reservoir How much work is…

A: Workdone= Heat discard- Heat absorbed...

Q: Calculate what CoP would be required for a ground source heat pump to reduce carbon dioxide…

A: Given Data The efficiency of the boiler is: η=93% The carbon intensity of the natural gas is: 0.19…

Q: Refrigerant as a work fluid to keep an environment at 25 ° C. A heat pump using 134a is used. The…

A: The environment temperature of refrigerant fluid is given as,TL=25∘C The evaporator entering…

Q: A certain heat engine rejects -14.2 kJ of heat from the system to the environment at T=300 K each…

Q: 1. An ideal Ericsson engine using helium as the working fluid operates between temperature limits of…

A: Given Data: The temperature at point 1 is: TL=600 R The temperature at point 2 is: TH=3500 R The…

Q: - A heat engine that gives heat to a heat well at 70 ºC receives heat from a source at 1020 ºC.…

Q: An OTEC power plant has an efficiency of 2.5%. The difference in temperature of teh warm surface…

A: Given:η=2.5%∆T=T1-T2 =7.5°C

Q: A SYStem executes a power cycle while recieving 750 k) by heat transfer at a temperature of 1500°k…

A: GivenQ1=750kJT1=1500kQ2=-100kJT2=500KQ3=?T3=1000K

Q: heat engine operates between the maximum and minimum temperatures of 6710 C and 600 C respectively,…

A: Given data as per question maximum temperature =6710 c and minimum temperatures =600 CTemperature…

Q: Refrigerant 22 is the working fluid in a Carnot vapor refrigeration cycle for which the evaporator…

A: Answer: The net work in the cycle is 6.08 kW.

Q: Carnot heat engine receives 612 kJ of heat per cycle from a high temperature source at 577°C and…

Q: 11-A maximum of 5 kW of power can be consumed for a heat pump. If the efficiency coefficient is…

A: coefficient of performance COP = Desired effect / work input required

Q: What is the power generated (in kW) in a geothermal power plant, if the enthalpies entering and…

A: To find: The power generated (in kW) in a geothermal power plant. Given: The turbine inlet enthalpy…

Q: 5. Consider a building whose annual air-conditioning load is estimated to be 120,000 kWh in an area…

A: Given data:Annual load L = 120,000 KWhPer unit cost of electricity = $0.10/KWhCOP of A = 3.2COP of B…

Q: 1. Consider the following schematic of a power plant (operating in what is called a "Rankine Cycle')…

A: a)The pressure drop occurs in the region point 4-5 and point 1-2. It occurs because of losses in the…

Q: (a) A food compartment is to be maintained at 21°C by a refrigeration system. The total cooling…

A: GIVEN DATA- (a) Temprature limt 21'C to 35'C , Total Cooling load=330KJ/h , Heat Rejection=480KJ/h…

Q: The production of more than one useful form of energy (such as process heat and electric power) from…

A: To fill: The blanks of the statement. Explanation: Cogeneration: The simultaneous production of…

Q: Refrigerant 22 is the working fluid in a Carnot vapor refrigeration cycle for which the evaporator…

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: As per our guidelines we are supposed to solve only 3 subparts if multiple subparts are asked .…

Q: 1.4. For a CSP plant with an electric power output of 30 MW and an overall plant efficiency of 18%,…

Q: The efficiency of an ideal heat engine working between the freezing point and boiling point of water…

A: Here, the thermal efficiency of the ideal heat engine is to be found which is working between…

Q: Determine: (a) the percent thermal efficiency. (b) the back work ratio. (c) the net power developed,…

A: A boiler is an external combustion system where the working fluid is heated with the aid of an…

Q: The net work produced by a Gas Turbine Power plant is 85 BTU. What is the efficiency of the said…

A: The efficiency of the gas turbine power plant is 81.97 %.

Q: 2. The maximum thermal efficiency possible for a power cycle operating between 1200°F and 225°F is:…

Q: Qin Qout Cold Body System Hot Body Win Consider the refrigeration cycle outlined above. If the…

Q: QUESTION 22 On a cold day, a homeowner uses a heat pump to absorb heat from the outside air of-10'C…

A: It is the very basic numerical of thermodynamics. In which used concept is coefficient of…

Q: 1. During a cyclic process, a heat engine absorbs 500 J of heat from a hot reservoir, does work and…

A: Given:Heat engineheat absorbs, Q1=500 Jheat to sink, Q2=300 J

Q: Refrigerant 22 is the working fluid in a Carnot vapor refrigeration cycle for which the evaporator…

Q: B) A reversible heat engine operates between two reservoirs at temperatures of 600°C and 40°C. The…

Q: A machine working on a Carnot cycle operates between 300 K and 250 K Determine the COP when it is…

A: Data given - T2 = 300 K T1 = 250 K

Concept explainers

Hydronics

Question

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.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

If 14 gpm of water is flowing through an open-loop heat pump with a temperature difference of 7F, how much heat in Btu/h is being absorbed or rejected in the heat pump? Show all work and units.
The operating condition for the single compressor in a household refrigerator is the lowest box temperature, which is typically A. 0F B. -20F C. 20F D. 40F
Refrigerators currently being manufactured in the United States are using______as their refrigerant.
What is the best coefficient of performance for a heat pump that has a hot reservoir temperature of 50.0ºC and a cold reservoir temperature of −20.0ºC? (b) How much heat transfer occurs into the warm environment if 3.60 × 107 J of work (10.0 kW · h) is put into it? (c) If the cost of this work input is 10.0 cents/kW · h, how does its cost compare with the direct heat transfer achieved by burning natural gas at a cost of 85.0 cents per therm. (A therm is a common unit of energy for natural gas and equals 1.055 × 108 J.)
Question 1 A Carnot heat pump is to be used to heat a house and maintain it at 25°C in winter. On a day when the average outdoor temperature remains at about 2°C, the house is estimatedto lose heat at a rate of 55 000 kJ/h. If the heat pump consumes 4.8 kW of power while operating, determine:The COP, heat loss for the day, required work input, how long the heat pump ran on that dayThe total heating costs, assuming an average price of R 2.35/kWh for electricity, andThe heating cost for the same day if resistance heating is used instead of a heat pump
A Carnot heat engine receives 612 kJ of heat per cycle from a high temperature source at 577°C and rejects heat to a low-temperature sink at 43°C. Determine the amount of heat rejected to the sink per cycle. Select one: a. 164 kJ b. 228 kJ c. 406 kJ d. 312 kJ
A cycle has a qin=350Btu/lbm, and a thermal efficiency of 74%. In this case, the network produced by the cycle is most likely: 320 Btu/lbm 90 Btu/lbm 260 Btu/lbm 350 Btu/lbm
A geothermal heat pump with a coefficient of performance of 1.3 supplies a building with 48000 BTU/hr of heat. Assuming a $0.20/kWh electricity rate. Provide responses to the following questions about this system: a. How much would it cost per month to supply heat at a rate of 48000 BTU/hr using a basic electrical resistance heater? b. In that month, how much heat is extracted from the earth by the heat pump, in kWh? c. What is the monthly savings associated with using this heat pump vs a basic electrical resistive heater?
A gasoline truck engine takes in 10,000 J of heat and delivers 2,000 J of mechanical work per cycle. . What other machines utilize the concept of heat engine in its operation? Give at least 3 examples.
17 - A heat engine that gives heat to a heat well at 70 ºC receives heat from a source at 1020 ºC. Since the heat entering this heat engine is 140 kJ/s, which of the following energy will the machine produce the most in 15 minutes? a) 133.8 kJ B) 90510 kJ NS) 97087.6 kJ D) 92575.4 kJ TO) 98234.4 kJ
Describe the function and components of a heat engine?
Consider a building whose annual air-conditioning load is estimated to be 150,000 kWh in an area where the unit cost of electricity is $0.12/kWh. Two air conditioners are considered for the building. Air conditioner A has a seasonal average COP of 3.3 and costs $5500 to purchase and install. Air conditioner B has a seasonal average COP of 4.45 and costs $6500 to purchase and install. All else being equal, determine which air conditioner is a better buy.