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Health And Safety Executive - HVAC

In this Offshore Technology Report the initials HVAC are used to denote the discipline relating to design and operation of heating, ventilation and air conditioning systems.
http://www.hse.gov.uk/research/otohtm/2001/oto01066.htm

Heating and Veltilation Contractors Association

Website of the UK's leading trade association for the hvacr industry. The Heating and Ventilating Contractors' Association (HVCA) was established in 1904 and represents the interests of some 1400 firms involved in the design, manufacture, installation or maintenance of heating, ventilation, air conditioning and refrigeration systems.
http://www.hvca.org.uk/

Air Conditioning and Refrigeration Industry Board

ACRIB is the voice of the UK refrigeration and air conditioning industry. It acts as a central point of liaison for UK Government and European bodies on consultations, reviews and implementation of legislation.
http://www.acrib.org.uk/

GORGI

CORGI is the National Watchdog for Gas Safety in the United Kingdom. Our mission is to lead standards in safety, and play our part in creating a more certain world.
http://www.corgi-gas-safety.com/

How Air Conditioning Works

When the temperature outside begins to climb, many people seek the cool comfort of indoor air conditioning. Like water towers and power lines, air conditioners are one of those things that we see every day but seldom pay much attention to. Wouldn't it be nice to know how these indispensable machines work their magic? In this article, we will examine air conditioners -- from small to huge -- so you know more about what you're seeing.
http://home.howstuffworks.com/ac.htm

Wikipedia, the free encyclopedia - Air Conditioning
An air conditioner is an appliance , system , or mechanism designed to extract heat from an area using a refrigeration cycle. In construction, a complete system of heating, ventilation, and air conditioning is referred to as HVAC
http://en.wikipedia.org/wiki/Air_conditioning

Wikipedia, the free encyclopedia - Evaporative Cooling
Evaporative cooling is a physical phenomenon in which evaporation of a liquid, typically into surrounding air, cools an object or a liquid in contact with it. Latent heat describes the amount of heat that is needed to evaporate the liquid; this heat comes from the liquid itself and the surrounding gas and surfaces.
http://en.wikipedia.org/wiki/Evaporative_cooling