Tag Archives: HVAC

Texas State Banks on HVAC retrofit

A proprietary lineset protection duct and mounting system offered an aesthetic solution for the installation of the building’s new HVAC equipment.

When Texas State Bank (TSB) opened its headquarters in San Angelo, in 1977, the HVAC on its rooftop was a state-of-the-art chilled water loop system. Three decades later, and annual cooling tower costs were spiraling. Outfitting the four-story building with an energy-efficient variable refrigerant flow (VRF) system provided a desirable solution.

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Prescription for Energy Savings: Reducing cost and consumption with upgraded cooling tower fans

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The average hospital uses three times the energy of typical commercial buildings, and U.S. medical facilities spend $8.8 billion annually on energy. Between lighting, medical equipment, HVAC, and plumbing, energy consumption in medical facilities outpaces any other type of building. For large hospital systems, annual costs can reach into the tens of millions of dollars—no small amount in an industry of thin margins.

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Stay in Control: Specifying building automation systems for cost savings

The Sheraton Phoenix Downtown Hotel uses a BACnet (data
communication protocol for building automation and control
networks) compatible building automation system (BAS) for
energy savings and occupant comfort. All images courtesy Alerton

Building automation systems (BAS) have evolved rapidly over the past several decades, expanding beyond HVAC alone to monitoring and controlling numerous other building systems. This article explores the opportunities from implementing BAS in new construction and in building retrofits, the latest features and benefits available, and factors to consider when specifying BAS controllers, software, and wall sensors for commercial and institutional buildings.

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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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