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Article | REF: BE9812 V1

Heat transfers at low temperature

Authors: Bertrand BAUDOUY, Gérard DEFRESNE, Patxi DUTHIL, Jean-Pierre THERMEAU

Publication date: January 10, 2015, Review date: October 28, 2019

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1. General

1.1 Objectives

Cooling and maintaining a system at low temperature requires the use of a thermodynamic device operating in refrigerator mode on the principle of a heat pump: the consumption of work W (in Joule) enables the transfer of a certain quantity of heat Q (in Joule) from a cold source at temperature T F to a hot source at temperature T C .

Applying the first and second principles of thermodynamics gives the relationship between work and heat:

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