working temperatures in the condenser coil of a refrigerator is32oCand5kWof heat  provided? infiltratesintothe freezer compartment.  What is the minimum temperature that the freezer can be maintained if a power inputof 1.7 kW is  Assume thatthe actual refrigerator has a COP of0.75 of the maximum.

Q: A heat engine is required to work at 80 per cent efficiency. At what temperature must the hot source…

A: Given data: Efficiency of heat engine,η=80%=0.8 Temperature of the cold sink, T2=20C = 273+20 = 293…

Q: 17. In a very mild winter climate, a heat pump has heat transfer from an environment at 5 °C to one…

A: The higher temperature, The lower temperature,

Q: A refrigerator has a coefficient of performance of 1. The ice (cice = 2090 J/kg.°C) tray compartment…

A: The heat required to change the temperature is given by Q=ms∆T where s is the specific heat, m is…

Q: A Carnot heat pump draws heat from the outside to keep your house at temperature Th by providing…

A: Efficiency = (Qh-Qc) / W where Qh is the heat provided to the house, Qc is the heat pulled from the…

Q: What volume of water at 0°C can a freezer make into ice cubes in 1.0h, if the coefficient of…

A:

Q: 10. What is the efficiency of an automobile engine that has a heat input of 67.2 kJ and a heat…

A: Heat output (Q2) = 36.1 kJHeat input (Q1) = 67.2 kJ Efficiency of heat engine     =    = 0.463To…

Q: Q4. 0.3 m³ of air at a pressure of 3 bar is expanded to a volume of 0.708 m³and temperature 160°C.…

A: Given that-The initial volume of the air, V1= 0.3 m3Final volume of the air, V2= 0.708 m3The initial…

Q: ne of the most efficient engines ever built (actual efficiency 42.0%) operates between 430°C and 1…

A: Actual Efficieny of the engine is e = 42% Highest operating temperature of the Engine is Th = 1870 C…

Q: The motor that drives a refrigerator produces 174 W of useful power. The hot and cold temperatures…

A:

Q: CS What is the efficiency of a heat engine working between 10 C and 13o°C? Select one: a. 30 % b. 92…

A:

Q: Suppose a woman does 600 J of work and -9400 J of heat transfer occurs into the environment in the…

A: Work, W = 600 JHeat, Q = -9400 JEfficiency, Eff = ?

Q: A steam engine is operated in a cold climate where the exhaust temperature is 0°C. (a) Calculate the…

A: (A)  The theoretical maximum efficiency of the engine is given by the following expression: η=1-TLTH…

Q: 13. A heat engine takes heat QH from a hot reservoir and uses part ofthis energy to perform work W.…

A: Efficiency of heat engine

Q: Calculate the COPR of the fridge at the new setting of 36.00 ∘F.  Calculate the work interaction of…

A:

Q: a heat pump transfers heat from an environment at 3.00 ∘C to one at 28.0 ∘C. What is the best…

A:

Q: The temperature inside a Carnot refrigerator is4.60°C. What is the high temperature, Th, in Celsius…

A: Coefficient of performance of refrigerator is given by, COP = cooling effect/work input          =…

Q: tor to the turbines at a temperature of 560 ° C. If the turbines release heat at a temperature of…

A:

Q: A heat engine operating between energy reserviors of 123.08 oC and 411.490C has 20.18% of the…

A:

Q: A reversed carnot refrigeration system has a refrigerating COP of 4 . Find the maximum temperature…

A: Given: A reverse carnot refrigeration system have coefficient of performance = 4           Work…

Q: (b) How much heat in kilocalories would it pump into the warm environment if 3.60 x 107 J of work…

A:

Q: A refrigerator is maintained at an internal temperature Ti = 275 K and an outside temperature To =…

A: We are given the inside and outside temperatures. The coefficient of performance is given as…

Q: My Vitamix blender can make hot water mechanically. The blender takes 32 oz of water at 25DegC and…

A:

Q: What is the maximum possible coeffcient of performance of a heat pump that brings energy from…

A: The relation between temperature in kelvin and the temperature in Celsius is: Convert the…

Q: 54. A Carnot engine operates with a large hot reservoir and a muchsmaller cold reservoir. As a…

A: Given: The changed efficiency of the engine = 0.70 The efficiency of the engine = 0.75

Q: The freezer compartment of a refrigerator operates between a temperature of -15ºC and room…

A:

Q: A Carnot air conditioner has a coefficient of performance of 17.4 removes 2150 J from a room on day…

A: solution is given by

Q: A completely reversible refrigerator operates between thermal energy reservoirs at 450 R and 540 R.…

A: The coefficient of performance (COP) of a reversible refrigerator is given by…

Q: A reversible heat pump can be utilized for heating in Winter and cooling in Summer. The Coefficient…

A: Given : The Coefficient of Performance in heating mode is calculated as: COPheating = ΔQhot / W =…

Q: A refrigerator is rated at 370 Watt. What is the maximum amount of heat it can remove in 1 min if…

A:

Q: A freezer maintains the freezer compartment at 20o C. while the air surrounding the freezer is at…

A: The coefficient of performance of the reversible process(COPRev) is, The process is shown as,

Q: Consider a sphere that has a uniform heat generation and in conduction occuring only steady state…

A: Consider the given equation 1r2ddrkr2dTdr +E =0kr2dTdr  =-Er2drkr2dTdr  =-∫Er2dr  kr2dTdr =-Er33dTdr…

Q: Constenta The inside of an ideal retrigerator is at a temoerature T. whia the heating oois on the…

A: Given the refrigerator acts as a Carnot engine, for a Carnot engine, the efficiency is given by, Net…

Q: 3.0 A cold storage is to be maintained at – 5°C while the surroundings are at 35°C. The heat leakage…

A: Given information: The temperature inside the storage (Tc) = -50 C = 273-5 k = 268 k The temperature…

Q: A refrigerator operates between temperatures of 315 and 279 K. What would be its maximum coefficient…

A: η=QcW=QcQH-QC=Qc/QH1-QCQH

Q: 250 mL of water at 20.0 ∘C is placed in the freezer compartment of a refrigerator with a coefficient…

A:

Q: What is the maximum efficiency of a heat engine operating between 68oF and 273 kelvins, the…

A: temperature T_1 =68 F =293.15Ktemperature T_2 =273 K   the maximum efficiency of a heat engine…

Q: 1. Suppose a woman does 600 J of work and -9500 J of heat transfer occurs into the environment in…

A: Workdone, W = 600 JHeat transferred, Q = -9500 J

Q: What volume of water at 0°C can a freezer make into ice cubes in 1.0 h, if the coefficient of…

A: Given data: Temperature of water is, T=0∘C. Time interval is, t=1.0 h=1.0 h×3600 s1 h=3600 s.…

Q: 014 10.0 рoints In each eycle of a Carnot engine, 124 J of heat is absorbed from the…

A: Efficiency of carnot engine.

Q: What is carnot efficiency of a heat engine operating between the temperatures of 381 degrees celsius…

A: Given data The higher temperature of a heat engine is: Th = 381°C = 654 K The lower temperature of a…