Download Air Conditioning System Design Manual, Second Edition by ASHRAE Press PDF


The air con handbook used to be written to help entry-level engineers within the layout of air-conditioning platforms. it's also suable - in conjuction with basic HVAC&R resourcee fabric - as a senior- or graduate-level textual content for a college direction in HVAC approach layout. The guide was once written to fill the void among concept and perform - to bridge the distance among real-world layout practices and the theoretical caluclations and analytical methods or at the layout of elements.

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Sample text

Air-handling units and decentralized air-conditioning systems require intake and exhaust/ relief air duct connections; outdoor air source locations may dictate the placement of equipment. Exhaust louvers should be sufficiently remote from intake louvers to prevent recirculation of exhaust air into a building. This complicates design for heat recovery, unless “runaround” aqueous, glycol, or refrigerant loops are used (see the “Applied Heat Pump and Heat Recovery Systems” chapter in the ASHRAE Handbook—HVAC Systems and Equipment).

The last alternative is often used in office buildings. For example, supply air terminals may be provided for each office module, but the perimeter heating system for an entire building (or for separate exposures of a building) may be controlled from a common point. Attempting to both cool and heat a number of perimeter rooms with different solar exposures and potentially diverse thermal characteristics from a single control device is not recommended. AIR-CONDITIONING SYSTEM DESIGN MANUAL⏐53 Whenever possible, rooms that require the same environmental conditions should be grouped in a single zone.

LEED-NC (Leadership in Energy and Environmental Design—New Construction). S. Green Building Council. 1 CONTEXT One of the first steps in designing an air-conditioning system is to establish comfort and health criteria for the various spaces in the building. These criteria support the established design intent and should become part of the Owner’s Project Requirements document. Such criteria should include space temperature and humidity, air speed surrounding occupants, mean radiant temperature (MRT), indoor air quality requirements, and sound and vibration levels.

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