By American Society of Heating
The 2008 ASHRAE guide - HVAC platforms and gear discusses quite a few structures and the gear (components or assemblies) that include them, and describes positive aspects and modifications. this knowledge is helping method designers and operators in settling on and utilizing apparatus. it really is divided into seven sections:
- Air-Conditioning and Heating platforms
- Air-Handling gear and elements
- Heating apparatus and parts
- Cooling gear and parts
- General elements
- Packaged, Unitary and Split-System gear
Read or Download 2008 ASHRAE Handbook - Heating, Ventilating, and Air-Conditioning Systems and Equipment (I-P Edition) PDF
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Additional info for 2008 ASHRAE Handbook - Heating, Ventilating, and Air-Conditioning Systems and Equipment (I-P Edition)
10 in. of water or less. Low-leakage dampers, such as those for outside intakes, prevent rattling and minimize leakage. The relief air opening should be located so that air does not short-circuit to the outside air intake. Return Air Dampers Negative pressure in the outside air intake plenum is a function of the resistance or static pressure loss through the outside air louvers, damper, and duct. Positive pressure in the relief air plenum is likewise a function of the static pressure loss through the relief damper, the relief duct between the plenum and outside, and the relief louver.
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. Duct sizing is often performed manually for simple systems, but commercially available duct-sizing software programs are often used for larger and complex systems. It is imperative that the designer coordinate duct design with architectural and structural design. Structural features of the building generally require some compromise and often limit depth.
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. Duct sizing is often performed manually for simple systems, but commercially available duct-sizing software programs are often used for larger and complex systems.