23 00 00 Heating, Ventilating, and Air Conditioning (HVAC)

Category Archives: 23 00 00 Heating, Ventilating, and Air Conditioning (HVAC)

Designing for Comfort & IAQ: Air distribution per ASHRAE 55 and 62.1

Photo © BigStockPhoto/Pavel Losevsky

The goal of a room air distribution system is to provide thermal comfort and a healthy living environment for occupants in the space. This article looks at designing such assemblies for comfort and indoor air quality (IAQ) per ASHRAE 55 and 62.1. It examines the common method of overhead distribution, but focuses on partially mixed (i.e. most under floor air distribution [UFAD]) and fully stratified (i.e. displacement ventilation) systems.

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Richardsville Elementary – NET ZERO

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September 2010 marked the grand opening for Richardsville Elementary, the First Net-Zero Insulated Concrete Form School in the U.S. Warren County School district, the school board responsible for Richardsville, has been building energy efficient schools that are being recognized for their innovation across the United States.

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Being Radiant: Planning in-slab hydronic heating and cooling

Photo © Tim Griffith

In-slab hydronic radiant heating and cooling systems, along with downsized forced-air systems, are gaining popularity as a means of optimizing thermal comfort while reducing energy consumption. Typically designed in conjunction with radiant heating, radiant cooling systems circulate cooled water through the same network of pipes where warm water circulates during the heating season. This network of pipes can turn the floors, walls, and ceilings of a conditioned space into cooled surfaces that evenly absorb heat energy.

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Designing to Prevent Infection

Photo © BigStockPhoto/Frank Boston

U.S. healthcare organizations increasingly face the most daunting medical challenge since the pre-antibiotic age thanks to an aging population and ever-increasing multi-drug resistant and environmentally adaptive pathogens. Architects and designers have an important role in providing successful patient care. They may design an environment that inadvertently accumulates, propagates, and circulates pathogens or one which is the best ally in continually mitigating the bioburden that spreads disease. What should be done?

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Avoiding Problems in Aquatics Facilities: Atypical design for atypical buildings

Photo © BigStockPhoto/Nikita Sobolkov

There are many issues to consider when designing a natatorium, including the choice of structural systems, building enclosure components, mechanical systems, and the operation of adjacent spaces in multi-use facilities. The intent of this article is to discuss the typical problems that the authors have investigated in over a dozen existing natatoriums and provide practical guidance for avoiding those problems through diligent and careful design and construction.

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The State of HVLS Technology

Images courtesy MacroAir

Since the original high-volume, low-speed (HVLS) fan prototype came to market more than 15 years ago, there have been significant technology and design developments improving the way they function. Confidence in the product has grown with architects and engineers through the establishment of an Air Movement and Control Association (AMCA)-approved method of measuring the fan’s performance and, more recently, updated safety guidelines through the National Fire Protection Association (NFPA) 13, Standard for the Installation of Sprinkler Systems.

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