Psychometric Charts are a valuable tool in selecting an air conditioning system “just right” for you.
When an air conditioning contractor wants specific, scientific data on the amount of latent heat a new air conditioner will be removing on a regular basis. This information is a big piece of the puzzle in deciding not only the size of the air conditioner to be installed, but also, the number, layout, and sizes of the ducts and vents throughout the building.
Dry-bulb temperature is the temperature of the air as measured by a thermometer suspended in the air and not exposed to radiation and/or moisture. Wet bulb temperature factors in the moisture in the air and correlates it with measureable levels of comfort.
The psychrometric chart is a handy tool that enables the reader to determine and calculate dry bulb, wet bulb, relative humidity, dew point temperature as well as other gas-vapor relationships with only limited information. This chart helps people, especially involved in heating, ventilating and air-conditioning systems, to determine human comfort levels in relationship to changes in temperature and humidity
DBT is the temperature that is usually thought of as air temperature, and it is the true thermodynamic temperature. It indicates the amount of heat in the air and is directly proportional to the mean kinetic energy of the air molecules.
source: www.coolbreeze.co.za
Unlike wet bulb temperature, dry bulb temperature does not indicate the amount of moisture in the air. In construction, it is an important consideration when designing a building for a certain climate. It is generally considered one of “the most critical climate variables pertaining to human comfort as relates to energy efficiency in both residential and commercial properties. The psychometric chart is one of the tools contractors rely heavily upon to determine the amount of latent heat, and moisture, a system will need to keep up with to ensure an acceptable level of comfort once the air conditioner is installed.
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Community Cooling and Heating President/CEO
Air conditioning service and repair Ft Myers
Kurt Hartmann, Owner of Community Cooling and Heating
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