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4. Choosing air conditioning equipment
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Choice of refrigerant
The choice of refrigerant is important from a technical point of view, as well as within the framework of legislation governing classified installations for environmental protection.
A distinction is made between direct and indirect refrigerant cooling.
— Direct: the refrigerant circulates throughout the system, including the heat exchangers. The most commonly used refrigerants are inorganic compounds (ammonia) and organic compounds (fluorochlorine derivatives of methane). Note the toxicity of ammonia in vapor form.
— Indirect: the cold storage capacity of ethylene glycol-water solutions is used. Refrigerant transfer, pressure drop, oil return to compressors, pollution and toxicity risks are minimized. The major disadvantage is the creation of...
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Choosing air conditioning equipment
Maintenance and servicing file
References
Regulations
Standardization
- Filtres à air de ventilation générale pour l'élimination des particules. Exigences, essais, marquage. - NF EN 779 - 12-93
- Filtres à air à très haute efficacité et filtres à air à très faible pénétration (HEPA et ULPA). Parties 1 à 5. - NF EN 1822 - 10-98 et 10-00
- Antiseptiques et désinfectants. Vocabulaire. - NF T 72-101 - 03-81
- Ambiances thermiques modérées. Détermination des...
Organizations and companies
(non-exhaustive list)
AFF Association française du froid http://www.aff.asso.fr/
ASEPT Sarl http://www.asept.fr/
ASPEC Association pour la prévention et l'étude de la contamination
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