1. Reminders
The term reversibility is commonly used here, but has no thermodynamic connotations.
A refrigeration machine is said to have a liquefiable fluid if it consists of a closed circuit in which a pure fluid or a mixture of fluids, called a refrigerant, can exist in both vapour and liquid states (figure 1).
When the system operates as a "refrigerating machine", it pumps heat from the cold source SF at temperature TF and rejects it to the hot source SC at temperature TC.
If some of the heat rejected at the SC can be used at temperature TC, this is a "heat recovery system".
If only the heat rejected to SC at a useful temperature is of interest, then the system operates as a "heat...
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Reminders
Defining an installation
Statistical and economic data
All these data were supplied by UNICLIMA.
Air conditioning – Refrigeration
In 2007, UNICLIMA companies saw their business grow by +5.7% compared to 2006. Business is therefore growing strongly on both the domestic and export markets.
As a result, and in contrast to previous years, the industry's growth rate is very close to the average for the mechanical engineering sector, whose sales rose by...
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