Download 2012 ASHRAE Handbook - Heating, Ventilating, and by ASHRAE PDF

By ASHRAE

ISBN-10: 1621980359

ISBN-13: 9781621980353

ISBN-10: 1936504251

ISBN-13: 9781936504251

This guide discusses quite a few structures and the gear (components or assemblies) they contain, and describes positive factors and alterations. this data is helping process designers and operators in settling on and utilizing gear. This version encompasses a new bankruptcy 18, Variable-Refrigerant-Flow structures, which describes those structures, their elements, and acceptable criteria intimately, and incorporates a method layout instance and critical counsel on expenses, controls, and security. This instruction manual is a reference for engineers operating in HVAC&R and for pros in allied fields. ASHRAE, based in 1894, is a world association of a few 50,000 folks. ASHRAE fulfills its venture of advancing heating, air flow, air-con, and refrigeration to serve humanity and advertise a sustainable global via examine, criteria writing, publishing, and carrying on with schooling.

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Extra resources for 2012 ASHRAE Handbook - Heating, Ventilating, and Air-Conditioning Systems and Equipment (I-P Edition)

Sample text

Louvers should be installed high enough to prevent security breaches (above ground level, where possible). As a guide, maintain free area around louvers as specified in ASHRAE Standard 15. Vibration and noise transmitted both into the space served by the plant and to neighboring buildings and areas should be considered in determining how much acoustical treatment is appropriate for the design, especially if the plant is located near sensitive spaces such as conference rooms or sleeping quarters.

Commercially available load calculation software programs, when applied correctly, help the designer find the optimum supply air temperature for each application. In cold-air systems, the supply air temperature is designed significantly lower than 55°F (perhaps as low as 44°F) in an effort to reduce the size of ducts and fans. In establishing supply air temperature, the initial cost of lower airflow and low air temperature (smaller fan and duct systems) must be calculated against potential problems of distribution, condensation, air movement, and decreased removal of odors and gaseous or particulate contaminants.

If maintenance is outsourced as required, extensive access may not be as high a priority. In some cases, regulatory and code access may be the only determining factors. , water, electricity) in locations reasonably accessible to equipment operators Adequate lines of sight to view thermometers, pressure gages, etc. Structural steel elements for major maintenance rigging of equipment Typical operator maintenance functions include cleaning of condensers, evaporators, and boiler tubes. S. Occupational Safety and Health Administration (OSHA) requirements.

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2012 ASHRAE Handbook - Heating, Ventilating, and Air-Conditioning Systems and Equipment (I-P Edition) by ASHRAE


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