Lecture 19 Examples - pump Example 2 Consider a...

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Example 1: A heat pump is used to maintain a house at a constant temperature of 23 °C. The house is losing heat to the outside air through the walls and the windows at a rate of 60,000 kJ/h while the energy generated within the house from people, lights, and appliances amounts to 4000 kJ/h. For a COP of 2.5, determine the required power input to the heat pump.
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Example 1 (cont.): If the outside temperature is 0 °C, what is the minimum required power input to the heat
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Unformatted text preview: pump? Example 2: Consider a piston-cylinder device that contains an ideal gas with constant specific heats. Perform a thermodynamic analysis of this fluid undergoing the following four-step cycle: 1-2: Reversible, adiabatic compression 2-3: Reversible, isothermal ( T = T H ) heat input 3-4: Reversible, adiabatic expansion 4-1: Reversible, isothermal ( T = T L ) heat output...
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