Heating, ventilation and air-conditioning

In a process plant project the extent and configuration of heating, ventilation and air-conditioning (HVAC) will depend on the processes, the buildings, manning and on the site climatic conditions. A project situated in the tropics can be very different from one realized in a temperate climate. This is a detailed and dense technology, with many options and many variations on each option. In this appendix we shall simply evoke the more common kinds of applications and identify quality issues which have to be addressed. 

Depending on specific requirements, work on site can include some or all of the following  

This prepares the ground for commissioning of the whole installation. 

We shall consider in turn heating, ventilation and air conditioning, briefly evoking the types of application to be met and the corresponding materiel to be installed. Then we shall examine quality concerns to be addressed during erection. 

Depending on requirements, a local or central heating system may be provided. Typically, in an industrial context, local heating can be carried out by installing in the space to be heated one or more self contained fuel oil or natural gas fired units comprising  

The Committee received the revised second draft of the supplementary guidelines on GMP for heating, ventilation and air-conditioning (HVAC) systems, together with the comments that had been made. After extensive discussion of the comments, the Committee adopted the document, subject to the inclusion of the agreed changes (Armex 2). 

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R. W. Haines, Control Systems for Heating Ventilating and Air Conditioning, Van Nostrand-Reinhold, New York, 4th ed., 1987. 

I oise Transmission Reduction in HVACSystems. One common use of sound-absorbing treatment is to reduce noise transmission in heating, ventilating, and air-conditioning (HVAC) systems (6). The treatments ate used to reduce the transmission of fan noise and air turbulence noise through ducts into occupied spaces. Noise transmission reduction in duct systems is described in terms of insertion loss, the difference in sound power level or sound pressure level measured at a given location before and after installation of the treatment or sound attenuation, the reduction in sound power between two locations affected by a sound source. The units ate decibels. 

HVAC The heating, ventilation and air conditioning system that circulates and delivers filtered, humidified or dehumidified, and cooled or warmed air to the interior of a building. 

Conditioning Engineers. (1996). ASHRAE Handbook Heating, Ventilating, and Air Conditioning Systems and Equipment. Atlanta Author. 

Chartered Institution ofBuildiiig Seivices Engineers. (1994). The International Dictionary of Heating, Ventilating, and Air Conditioning. London Author. 

Howell, R. Saner, H. and Coad, W. (1998). Principles of Heating, Ventilating and Air Conditioning. Atlanta ASHRAE, Inc. 

Trethwiey, Richard. (1994). This Old House Heating, Ventilation, and Air Conditioning. Boston Little, Brown. Weinberger, Herbert. (1992). Residential Oil Burners. Albany, NY Delmar Publishers. 

Figure 12-142. ASHVE Friction chart for air in duct. (Used by permission Heating, Ventilating and Air Conditioning Guide, 1949. American Society of Heating and Ventilating Engineers, reprinted with permission Air Movement and Control Association International, Inc. All rights reserved.)...

Compact and quiet running. Used on heating, ventilation and air-conditioning work... 

In heating, ventilation, and air-conditioning (HVAC) system designs, the hydronic heating systems also may incorporate cooling or chilled water circuits, laid out as two-pipe or four-pipe systems. These terms typically refer to ... 

HEPA HVAC high-efficiency particulate air heating, ventilation, and air conditioning... 

Point Release Versus Attack on the Heating, Ventilation, and Air Conditioning System... 

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