A heat pump water heater (HPWH) heats water by absorbing heat from the ambient air and transferring it to water. The heat pump has a COP of 3.4 and consumes 6 kW of electricity when running. Determine if this heat pump can be used to meet the cooling needs of a room most of the time for “free” by absorbing heat from the air in the room. The rate of heat gain of a room is usually less than 45,000 kJ/h.

Q: Determine if the following systems are 'closed', 'open' or 'isolated': a. Gas in a sealed container…

A:

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A: To determine the correct statement regarding the situation. Given:The kitchen is an insulated system…

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A: temperature variation with height:

Q: During one complete cycle of a heat engine process, which of the following quantities is nonzero? a.…

A: Solution:

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A: Given Qi=537J Qe=121J

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A: Given data: Mass of ice, m = 48kg COP1 = 5 COP2 = 6 Electricity cost = 0.1$ / kWh

Q: You want to heat your oven to 400°F. Given that your oven has a surface area of 1m2, about how much…

A: Given  Surface area of oven(A)= 1 m2 Temperature of oven (T) = 400°F We want to calculate power…

Q: If 3.50E2 J of heat are transferred to a system, while the system does 203 J of work. What is the…

A: Heat transferred = Q = 3.50 × 102 J Work done = W = 203 J Change in internal energy = ∆U = ?

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Q: Initially resting in the xy coordinate plane's center, an item erupts into three parts. Immediately…

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Q: An engine releases 0.450 kJ of heat for every 0.510 kJ of work it does. What is the efficiency of…

A: heat released Q2=0.450kJwork done by engine W=0.510kJ

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A: As per given, The coefficient of performance = 2.5 Energy delivered by heat pump = 20kW

Q: During one complete cycle of a heat engine process, which of the following quantities is nonzero?…

A: The correct option is (c). The work done.

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A: Given data: The high-temperature steam has a temperature of, Th=376 K  The low-temperature reservoir…

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A: According conservation of energy, energy can not be created not be destroyed.

Q: a. b. 4. Based on the first law of thermodynamics, which of the following is wrong? The sum of the…

A: First law of thermodynamics state that Energy can neither be created nor be destroyed. Which can…

Q: STEP 2. In the previous activity you also considered a situation in which a person turned a…

A: Given :      G/R energy diagram

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A: Heat required to boil water Q = mL L = latent heat of vaporization = 2260 KJ/kg

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A:

First law of Thermodynamics

The word thermodynamics consists of two words: thermo- and dynamics. Dynamics means the study of motion. The field of thermodynamics is all about the study of the movement of heat. In a more meaningful way, it is stated as the study of the transfer of energy. Energy transfer is something that we encounter in day-to-day life. Automobiles, chemical reactions, refrigerators, and power generators work on the basis of thermodynamic principles.