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

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

Saving on Natatorium Energy Costs with Green Options

Photos courtesy Jarmel Kizel Architects and Engineers

New technologies can provide optimal natatorium environmental control and energy savings. Today’s indoor pool dehumidifiers and outside air ventilation systems technology has changed so much over the last decade, a new or retrofitted natatorium stands to save millions of dollars in energy costs over the 15 to 25-year lifecycle of the equipment. Equipment comes with reduced refrigerant charges of up to 85-percent, compressor heat recovery for free pool water heating, exhaust heat recovery for preheating outdoor air, modulating controls for pinpoint temperature and humidity control, glycol heat rejection to dry coolers, and web-based microprocessor monitor, alarms, and control for factory technician review.

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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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Solar Air-heating Systems 101: Cigas Machine Shop

A total of 1084 m2 (11,670 sf) of black, transpired solar collector
wall panels were installed at the Cigas Machine Shop in
Pottstown, Pennsylvania.
Photo courtesy ATAS International

The Cigas Machine Shop in Pottstown, Pennsylvania, is located in a building previously owned by the Bethlehem Steel Corporation, with parts of the structure dating back to the late 1880s. Back in that era, Bethlehem Steel was involved in the production of fabricated components used in the construction of the Golden Gate and many other familiar bridges.

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Solar Air-heating Systems 101: Ensuring efficient and economical renewable energy

All images courtesy ATAS International

A transpired solar collector system utilizes perforated metal wall cladding to heat outside fresh air via sunlight. This technology can help reduce winter heating costs by approximately 30 percent, qualify for government grants and incentives for renewable energy, and generally has a payback of three to eight years. These types of systems have been used on a wide variety of facility types, in both new construction and retrofit applications. Buildings with a large volume of air to heat, and/or requiring a high number of fresh air exchanges are excellent candidates for a transpired solar collector.

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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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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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