METER DATA

HVAC stands for Heating, Ventilation and Air Conditioning. Anyone interested in the history of air cooling systems cannot avoid mentioning Mr. Willis Carrier who was an American Engineer and inventor who used refrigeration to cool water vapour in humid air. This vapour condenses into droplets which leaves the air dry and cool. The following gives us some insight into why airconditioning systems came about. It also lets us know more about Mr. Carrier.

HVAC embraces not only airconditioning but also heating systems and ventilation. It was seem obvious that major companies supplying goods and services to individuals and industry would would want to provide solutions all year round whether it is hot or cold. The HVAC industry is now an industry in it's own right with it's own standards, designs and normal practice. HVAC Engineers will familiarize themselves not only with standards but will also involve themselves with heater or chiller calculations to optimize efficiency and save costs. They will also be familiar with mechanical equipment such as pumps, compressors, condensers,  blowers and electrical energy consumption as well as control and monitoring systems using local and remote instrumentation and panels.

The following media presentation gives an idea to those unfamiliar with this industry and the fact that manufacturers are continually developing chiller systems that will work together with energy efficiency ideas. The combination of variable speed drives and control systems along with sensors and instrumentation allow monitoring of  multiple parameters which help technicians to not only diagnose conditions but also to remedy them. Storing data pertaining to the history of heat exchangers and  performance can also help predict future conditions as well as assist in preventative maintenance schedules.