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3. Evaporators
In any refrigeration machine, the evaporator is the device used to extract heat from a fluid to be cooled. In the case of heat pumps, the evaporator may be less important than the condenser.
3.1 Air-cooled evaporators
Air-cooled evaporators essentially handle atmospheric air charged with water vapour. Thermal design calculations for this type of evaporator must take this into account, because when the surface temperature of the evaporator is above 0°C but below the dew point of the cooled air, cooling is accompanied by partial separation of the water, which condenses on the cold wall of the evaporator. Below 0°C, frost forms. The same problem can arise with vapour-laden gases to be condensed.
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Evaporators
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Air conditioning – Refrigeration
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Bibliography
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Thermodynamic properties of PYC refrigerants IIF Books
CDRom 2002
ClRCUlFRlGO calculation and simulation of a refrigeration plant
PYC Books JC. Concept 2004
Thermofluid Dehon
Solkane Solvay
Autospeed Logiciel de dessin sous autocad, PYC Livres, LHEUREUX...
Event
Colloques AFCE du 9 octobre 2008. Refrigerant regulation. The end of R22 and low GWP fluids. Next symposium: 15/10/2009
Standards and norms
ISO international standards
- Systèmes frigorifiques mécaniques utilisés pour le refroidissement et le chauffage. Prescriptions de sécurité - ISO 5149 -
- Compresseurs pour fluides frigorigènes. Présentation des performances - ISO 9309 -
- Sécurité et exigences environnementales des systèmes de réfrigération - TC 86/SC 1 -
- Termes et définitions - TC 86/SC 2 -
- Essais et point nominal...
Regulations
Pressure equipment regulations
In the past, it was defined by a decree of 1943, subsequently revised in 1960. As part of the harmonization of technical regulations, the European Union has issued a Pressure Equipment Directive (PED) (no. 97/23), which becomes the only rule in force in each member state; for France, the transcription is the subject of a decree and order no. 99-1046 of 13/12/1999.
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Hamon http://www.hamon.com
Heatcraft http://www.heatcrafteurope.com
Jacir http://www.cofinair.fr
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