Controlling mechanical system noise

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A typical urban and suburban environment has numerous sources contributing to the exterior ambient noise. Among these are the environmental sounds from a building’s heating, ventilating, and air-conditioning equipment. How can design professionals help mitigate the distraction caused by HVAC?

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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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Water-source VRF Zoning 101: Combining geothermal with variable refrigerant flow

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Variable refrigerant flow (VRF) HVAC zoning and geothermal systems are two of the most energy-efficient options for heating and cooling available—now, new hybrid assemblies combine the two. This article provides an overview of geothermal (or water-source) with VRF zoning technology and its advantages compared to traditional geothermal systems, air-source VRF zoning systems and conventional HVAC systems. In addition, the article will discuss considerations for specifying water-source VRF zoning systems and provide case studies of successful applications.

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