Question

Imagine an ideal Carnot freezer that operates between the house at a temperature of TH =...

Imagine an ideal Carnot freezer that operates between the house at a temperature of TH = 47oC and the inside of the freezer at a temperature of TL. This refrigerator is rated to do work at 300W. If the ideal COP for the freezer is 4. (for parts a, b, c use COP as 4)

a) Calculate TL?

b) How much heat will be taken from the freezer per second?

c) How much heat will be going outside the freezer (QH) per second?

d) When the freezer is working at a non-ideal COP, it takes 5 minutes to freeze 800 g of water at 0oC. Calculate the non-ideal COP of the freezer. Heat of fusion for water 3.33x105 J/kg

Homework Answers

Answer #1

#Hi, if you are happy and find this useful please thumbs up. In case, if you have any query regarding the solution please let me know in the comments section below. We can discuss. Thanks!!

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A heat pump is used to keep a house warm at 22C. ∘C A. How much...
A heat pump is used to keep a house warm at 22C. ∘C A. How much work is required of the pump to deliver 2500 J of heat into the house if the outdoor temperature is 0∘C . Assume a COP of 3.0 B.How much work is required of the pump to deliver 2500 J of heat into the house if the outdoor temperature is -15∘C ? Assume a COP of 3.0 C. How much work is required of the...
A heat pump is used to keep a house warm at 22∘C. How much work is...
A heat pump is used to keep a house warm at 22∘C. How much work is required of the pump to deliver 3000 J of heat into the house if the outdoor temperature is 0∘C. Assume a COP of 3.0 How much work is required of the pump to deliver 3000 J of heat into the house if the outdoor temperature is -15∘C? Assume a COP of 3.0 How much work is required of the pump to deliver 3000 J...
A heat pump is used to keep a house warm at 22∘C. A) How much work...
A heat pump is used to keep a house warm at 22∘C. A) How much work is required of the pump to deliver 3200 J of heat into the house if the outdoor temperature is 0∘C. Assume a COP of 3.0 B) How much work is required of the pump to deliver 3200 J of heat into the house if the outdoor temperature is -15∘C? Assume a COP of 3.0 Express your answer to two significant figures and include the...
500g of water at temperature of 15°C is placed in a freezer. The freezer has a...
500g of water at temperature of 15°C is placed in a freezer. The freezer has a power rating of 100W and is 80% efficient. 1- Calculate the energy required to convert the water into ice at a temperature of -20°C. 2- How much energy is removed every second from the air in the freezer? 3- How long will it take the water to reach a temperature of -20°C? 4- Explain the process that cools the air in the freezer. 5-...
10)When a metal bar is temporarily connected between a hot reservoir at Th and a cold...
10)When a metal bar is temporarily connected between a hot reservoir at Th and a cold reservoir at Tc, the energy transferred by heat from the hot reservoir to the cold reservoir is Qh. In this irreversible process, find expressions for the change in entropy of the following. (Use any variable or symbol stated above as necessary.) (a) the hot reservoir ΔSh =      (b) the cold reservoir ΔSc =      (c) the Universe ΔSU =   12)A Carnot engine operates...
2) A heat engine operates between two fixed temperature reservoirs, TH = 127 0C, TC =...
2) A heat engine operates between two fixed temperature reservoirs, TH = 127 0C, TC = 7 0C. In each cycle 5 J are extracted from the hot reservoir and 4 J are deposited into the cold reservoir. [ 0 0C = 273 K] (a) How much work is performed by the engine per cycle ? (4) (b) What is the efficiency of the engine ? (4) (c) What is the entropy change of the hot reservoir during one cycle...
1) A nozzle is a device for increasing the velocity of a steadily flowing stream of...
1) A nozzle is a device for increasing the velocity of a steadily flowing stream of fluid. At the inlet to a certain nozzle the enthalpy of the fluid is 3025 kJ/kg and the velocity is 60 m/s. At the exit from the nozzle the enthalpy is 2790 kJ/kg. The nozzle is horizontal and there is negligible heat loss from it. (i) Find the velocity at the nozzle exit. (ii) If the inlet area is 0.1 m2 and specific volume...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT