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where Q<sub>L</sub> is the desired energy into the low temperature environment and W<sub>net,in</sub> is the required work input into the refrigerator itself. | where Q<sub>L</sub> is the desired energy into the low temperature environment and W<sub>net,in</sub> is the required work input into the refrigerator itself. | ||
Carnot efficiency is a theoretical maximum efficiency that can be achieved by running a [[carnot | Carnot efficiency is a theoretical maximum efficiency that can be achieved by running a [[carnot cycle]]. The theoretical carnot, or n<sub>th</sub>=W<sub>net</sub>/Q<sub>H</sub>, where W<sub>net</sub> equals the work input into the refrigerator and Q<sub>H</sub> equals the energy in the high temperature reservoir. n<sub>th</sub> can also be equated as Q<sub>H</sub>-Q<sub>L</sub>/Q<sub>H</sub>, where Q<sub>H</sub> is the energy in the high temperature reservoir and Q<sub>L</sub> is the energy in the low temperature reservoir. | ||
Flow rate (mass<sub>rate</sub> or m dot) can be equated as: Q<sub>dot</sub>/h<sub>1</sub>-h<sub>4</sub>, where Q<sub>dot</sub> equals the rate of energy used and the different h values signify enthalpy and can be found or interpolated from a thermodynamic table. | Flow rate (mass<sub>rate</sub> or m dot) can be equated as: Q<sub>dot</sub>/h<sub>1</sub>-h<sub>4</sub>, where Q<sub>dot</sub> equals the rate of energy used and the different h values signify enthalpy and can be found or interpolated from a thermodynamic table. |