The Ocean Thermal Energy Conversion (OTEC) system in Hawai utilizes the surface water and deep water as thermal energy reservoirs Assume the ocean temperature at the surface to be 20 "C and at some depth to be 6 C
Q: A heat engine receives heat from the source at 1400°C and rejects heat to a sink at 40°C The thermal…
A: Given:TH=1400°C =1673 KTL=40°C =313 Kηt=0.55
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A: From the data given in question, Rate of heat rejection = QR = 360 kJ/min Power supplied = W = 2 kW…
Q: Q7: An air conditioning system is used to maintain a house at a constant temperature of 20 C. The…
A: Given:TL=20°CQ1=21000 KJ/hQ2=9000 KJ/hCOP=2.4
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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…
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A: Dear student, According to the guidelines I am allowed to answer only one…
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A: from the steam table for saturated liquid water at Ps = 1 MPa, Ts = 179.9oC = (179.9 + 273) K =…
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Q: b) On a winter day when the average outdoor temperature remains at about 4°C, the house is estimated…
A: Heat Transfer: The transfer of heat from one body to another body due to the difference in…
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: Write the given data.
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
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Q: Explain how you can reduce the energy consumption of your household refrigerator.
A: The energy consumption of household refrigerator can be reduced by various ways- (1). Do not place…
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A: Given data:-Rate of heat loss, qr=5400kJ/h-°CLet Lower temperature be THiger temperature,…
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Q: A condenser of a refrigeration system rejects heat at a rate of 120 kW, while is compressor consumes…
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A: NOTE:- As per our company guidelines we are supposed to answer only one question. Kindly repost…
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A: Given data: Vw=41 gallonQfuel=1000 BTU/ft3∆T=1°F Need to determine the amount of natural gas need to…
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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: determine the amount of power generated.
A: Solution: The formula for the mass flow rate of seawater is given as Here, is the density of the…
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Q: C.O.P. b. Refrigerant fl ow rate = .. Kg/s c. Rate of heat removed by condenser = .. Kj/s
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Q: Second Law of Thermodynamics A heat pump is used for cooling in summer and heating in the winter.…
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Q: A Carnot heat engine operates between reservoirs at 30°C and 290°C. Determine the efficiency of the…
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Q: Q5: Determine which removes heat from the food compartment at a rate of 6000000 J/h for each 1200 W…
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Q: Determine the net power required to operate the heat pump, in kW. whose coefficient of performance…
A: GivenCOP=2.5Qout=20kw
Q: (9) The coefficient of performance of a residential heat pump is 2.85. If the input power to this…
A: Consider a heat pump whose source and sink temperatures be TH and TL respectively. Let qr be the…
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A: Given: Air is at DBT =26 deg RH=50% inlet conditions DBT=35 deg WBT=28 deg To determine: Specific…
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A: Given data: The COP of the pump, COP = 3.2. The mass of the house, m = 1200 kg. The power consumed…
Q: A heat engine receives heat from a heat source at l1200°C and has a thermal efficiency of 40%. The…
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Q: Define thermal energy reservoir?
A: Thermal energy reservoir⇒ Thermal energy reservoir is defined as a thermodynamic system containing…
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A: Given data as per the question Outdoor temperature = 5°C House inside temperature =25°C Rate of…
Q: Two rigid tanks, each filled with 50 kg of air, have temperature of 900 K and 400 K. A heat engine…
A: Data given- T1 = 900 K T2 = 400 K m = 50 kg
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- Discuss the modes of heat transfer that determine the equilibrium temperature of the space shuttle Endeavour when it is in orbit. What happens when it reenters the earths atmosphere?Question 2. A household with electric resistance heating plans to switch from resistive heating to a ground source heat pump. Annual heat consumption of the house is 30 000 kWh. Investment cost of the heat pump is 21 000 €. Heat pumps COP is 4.0. How much are the annual savings compared to resistive heating after the change of the heating system (in kWh)? Average price of electricity is assumed to be 12 c/kWh. Round off your answer to one decimal digit and enter it without the unit.Hot Reservoir HE 1 HE 2 Он QL Cold Reservoir W net,out, 1 net,out, 2 W Let's calculate for the combined HE Given, if nth,HE1 = 21th,HE2 1. Find Q, in terms of Q and QH- 2. What is overall thermal of the whole system?
- Latent heat of fusion is the heat given up as a substance freezes. The latentheat of fusion for water is 144 British thermal units per pound (Btu/lb). Thismeans that 144 Btu are given up for each pound of water that freezes. Howmany British thermal units of heat are given up when 4,000 pounds of waterfreeze?None of the above Electric heater is used to heat 0.63 liters/minute of water (c. = 4.18 kJ/kg.K density =1000 kg/m ) from 13 °C to 85 C. What is the current (in Amperes) that must be supplied to this heater if the supplied voltage is 220 V? Select one: O a 10.37 Ob. 11.97 Oc. 7.98 Od.14.36 O e. None of he aboveThe presence of thermal reservoir of a Geothermal Power Plant, supplements the generation of power and energy. What is then the thermal energy at the reservoir if the temperatures of the reservoir and a reference point are 315 C and 295 C respectively with volumetric specific heat and the value at the reservoir are 78 KJ/KG and 155 cu.meter. 241.800 KJ 352.500 K) 421.850 KJ 541, 820 KJ
- AE ll ll A:£0 docs.google.com/forms When a stationary mass of gas was compressed without friction at constant pressure its initial state of 0.8 m3 and 0.105 MPa was found to change to final state of 0.40 m3 and 0.105 MPa. There was a transfer of 85 kJ of heat from the gas during the process.How much did the internal energy of the gas change ? * 1 Add File Derive the law pv^y = constant * 1 Add File Вack Next Never submit passwords through Google Forms. This form was created inside L Iniversity of Al-Q1: If a calorimeter is not assumed to be adiabatic, how would one calculate the heat transfer? Guide Questions: What are the parameters to be considered and the equations to be used? What law of thermodynamics does this transfer of heat to the surroundings touch? Is an adiabatic system automatically considered as a closed system? Please help me understand by also attaching a reference/book/journal article. This would help me in my essay. Thank you.The presence of thermal reservoir of a Geothermal Power Plant, suppiements the generationn of power and energy What is then the thermal energy at the reservoir if the temperatures of the reservoir and a reference point are 315 Cand 295 C respectively with volumetric specific heat and the value at the reservoir are 78 K/KG and 155 cumeter. 241,800 KJ 352,500 KJ (c) 421,850 KJ D) 541, 820 KJ
- Conduction Heat Transfer X material (a) material (b) . both (a) and (b) have the same thermal conductivity the temperature distribution is independent of thermal conductivity it's not that simple 9. Fin efficiency is defined as: • tanh (mL) (hP/k Ac)1/2 (heat transfer with fin) / (heat transfer without fin) (actual heat transfer through fin) / (heat transfer assuming all fin is at T = Tb) (Tx=L-Tf)/(Tb-Tf) 10. For an infinite fin, the temperature distribution is given by: (T-Tf)/(Tb-Tf)= e-mx. The heat flow through the fin is therefore given by: k (Tb-Tf)/L ● zero, because the fin is infinite ● infinite because the fin is infinite ● (Tb-Tf) (hP/k Ac)1/2 ● (Tb – Tf) (h P / k Ac)1/2 tanh (mL) 11. The Biot number, Bi, is defined as: • Bi=hk/L • Bi=hL/k • Bi= k/LH • Bi=qL/k • Bi=p UL/k 12. For a plate of length L, thickness, t, and width, W, subjected to convection on the two faces of area L x W. What is the correct length scale for use in the Biot number? . L ● W ● t • t/2 • L/2 13. If Bi…Consider the percentageshares of World Population, GDP, andCommercial Energy Use for somemajor countries(US, Europe, India, China) in 2011. Howdo you think the situation willlook like in a future (say 2050) more sustainable world? Write 1-2 paragraphs discussing and explaining your positions.A 2-m2 electric heater is used to heat the air above it. The surface of the heater is at 300°C while the surrounding air is at 40°C. The heater draws 240 V and 22 A and the heat transfer coefficient is 10 W/(m2K).a) What is the rate of heat transfer into the surrounding air in Watts? b) What is the energy conversion efficiency as a percentage (a number between 0 and 100)? Report your answer to one decimal place using rounding.