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HVAC is an acronym for heating, ventilating, and air conditioning. Refers to the heating, ventilation, air conditioning system installed in a building to regulate temperature. A properly functioning systems cools the air and removes moisture.
Forced ventilation may be used to control humidity or odours. Kitchens and bathrooms typically have mechanical ventilation to control both. Factors in the design of such systems include the flow rate (which is a function of the fan speed and exhaust vent size) and noise level. If the ducting for the fans traverse unheated space (e.g. an attic), the ducting should be insulated as well to prevent condensation on the ducting.
Heat recovery ventilation systems employ heat exchangers to bring the fresh air temperature to room temperature.
Ceiling fans and table/floor fans are very effective in circulating the air in the room. Paradoxically, because heat rises ceiling fans may be used to keep a room warmer.
An air-conditioning system provides heating, cooling, ventilation and humidity control for a building. It is often installed in modern offices and public buildings, but is difficult to retrofit (install in a building that was not designed to receive it) because of the bulky air ducts required. A duct system must be carefully maintained to prevent the growth of pathogenic bacteria in the ducts. The alternative to large ducts to carry the needed air to heat or cool an area is the use of remote coils or split systems. These systems are gaining popularity in commercial buildings although are most often seen in residential application. The remote coil is connected to a remote condenser unit using piping instead of ducts. The units usually have a fan to move air across the coil, although recent innovation have seen static units installed in some large office spaces.
A dehumidifier is an air-conditioning-like device that controls the humiditity of a room or building. They are deployed in basements, which because of their lower temperature have a higher relative humidity. (Conversely a humidifier increases the humidity of a building.)
Air-conditioned buildings often have sealed windows, because open windows would disrupt the attempts of the control system to maintain constant air quality.
This includes air conditioning plants, chillers and ducting systems, which ensure the uniform transfer of the cold or hot air throughout the building.
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Standard Specification Section 15891, Division 15
... October 15, 2001. CONSTRUCTION STANDARD SPECIFICATION. SECTION 15810 ... HVAC Duct Construction Standards - Metal and Flexible. HVAC Duct Systems Design ...
DARTMOUTH COLLEGE DESIGN September 15, 2004 - 2007 & CONSTRUCTION GUIDELINES 15890-METAL DUCTWORK & ACCESSORIES
... panel area, as indicated in SMACNA "HVAC Duct Construction Standard," Figure 1-8, regardless if ... accordance with SMACNA "HVAC Metal Duct Construction Standard, Second Edition (1995 ...
Requirements for the Installation of Service Openings in HVAC Systems Standard 05
... This standard applies to the majority of HVAC systems, regardless of the type of duct. construction. Service openings ... Chantilly, VA. HVAC Duct Construction Standards-Metal ...
Charlotte New Construction HVAC Services | MTB Mechanical
Serving the Charlotte area, the HVAC contractors at MTB Mechanical in Matthews, North Carolina specialize in custom air and heating duct installation and design services for new home construction.
SMACNA METROPOLITAN DETROIT CHAPTER PRICE LIST AND ORDER FORM SMACNA PUBLICATIONS Publication Title
... Fibrous Glass Duct Construction Standard & Supplement* -22.00 ... 14.00. HVAC Duct Construction Standard, Metal & Flexible ...
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