Read e-book online 2008 ASHRAE Handbook - Heating, Ventilating, and PDF

By American Society of Heating

ISBN-10: 1601197950

ISBN-13: 9781601197955

ISBN-10: 193374233X

ISBN-13: 9781933742335

The 2008 ASHRAE guide - HVAC platforms and gear discusses a variety of platforms and the apparatus (components or assemblies) that include them, and describes beneficial properties and changes. this data is helping approach designers and operators in identifying and utilizing apparatus. it truly is divided into seven sections:

  • Air-Conditioning and Heating platforms
  • Air-Handling gear and parts
  • Heating gear and elements
  • Cooling gear and parts
  • General elements
  • Packaged, Unitary and Split-System gear
  • General
    This name has been lately up-to-date with 221 Digitized Graphs and a couple of Interactive Tables overlaying potency, radiation warmth flux, functionality, warmth loss and plenty of different priceless subject matters.

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    Read Online or Download 2008 ASHRAE Handbook - Heating, Ventilating, and Air-Conditioning Systems and Equipment (I-P Edition) PDF

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    Additional resources for 2008 ASHRAE Handbook - Heating, Ventilating, and Air-Conditioning Systems and Equipment (I-P Edition)

    Sample text

    This can vary from 18 in. to 5 ft and must be allowed for in the layout and dimensioning of the air-handling unit. Dehumidifiers For most routine applications, such as offices, residences, and schools, the air-handling unit’s cooling coil provides adequate dehumidification. Where a specialty application requires additional moisture removal, desiccant dehumidifiers are an available accessory. Dust can be a problem with solid desiccants, and lithium contamination is a concern with spray equipment.

    AIR DISTRIBUTION Once air-handling system and air-handling equipment have been selected, air must be distributed to the zone(s) served. Ductwork should deliver conditioned air to each zone as directly, quietly, and economically as possible. Air distribution ductwork and terminal devices selected must be compatible or the system will either fail to operate effectively or incur high first, operating, and maintenance costs. Ductwork Design Chapter 35 of the 2005 ASHRAE Handbook—Fundamentals describes ductwork design in detail and gives several methods of sizing duct systems, including static regain, equal friction, and T-method.

    If a constant-volume system is oversized, reheat cost becomes excessive. Fig. 9 Constant-Volume System with Reheat and Fan-Powered Terminal Unit Fig. 9 Constant-Volume System with Reheat Fig. 10 In commercial applications, use of a constant-volume reheat system is generally discouraged in favor of variable-volume or other systems. , for infection control). Variable Air Volume (VAV) A VAV system (Figure 10) controls temperature in a space by varying the quantity of supply air rather than varying the supply air temperature.

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    2008 ASHRAE Handbook - Heating, Ventilating, and Air-Conditioning Systems and Equipment (I-P Edition) by American Society of Heating

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