Articles by Harvey Sachs Wilson Lin

Emerging Technology: Liquid Desiccant Air Conditioners

By Harvey Sachs Wilson Lin
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Ongoing economic and indoor environmental concerns require HVAC innovation. New liquid desiccant air conditioning systems offer substantial energy savings and greatly improved humidity control in applications where latent loads (moisture) are very high relative to sensible loads.
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Emerging Technology: Automated Fault Detection and Diagnostics for Rooftop Units

By Harvey Sachs Wilson Lin
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Smart HVAC equipment that recognizes when it is failing or has failed, or when conditions have drifted outside its optimum range, could save substantial amounts of energy if the equipment sent useful information to the building owner or contractor. This is referred to as automated fault detection and diagnostics (FDD).
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Emerging Technology: Commercial Energy Recovery Ventilation Systems

By Harvey Sachs Wilson Lin
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Energy recovery ventilation (ERV) systems exchange heat (often both sensible heat and water vapor) between the outgoing exhaust air and the ventilation air being brought in. Under appropriate conditions, this allows reducing the capacity of the HVAC system and saves energy.
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Emerging Technology: Advanced Rooftop Packaged Air Conditioners

By Harvey Sachs Wilson Lin
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Advanced packaged rooftop units (RTUs) are emerging with higher efficiencies and additional features designed to save energy off-peak and improve reliability. Features include improved fans and economizers; better controls for the fan, refrigerant cycle, and economizer; and advanced monitoring and diagnostics.
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Emerging Technology: Chilled Beam Cooling

By Harvey Sachs Wilson Lin
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Chilled beam systems provide savings by replacing fan energy with pump energy. They use pumped chilled water instead of blowing cold air. Water has much higher heat capacity, both by mass and volume. In typical pump and fan arrangements, this has been shown to translate into a reduction in fan energy by a factor of seven.
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2014 Energy Efficiency Forum

Highlights from the 25th annual Energy Efficiency Forum in Washington, D.C.

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NEWSMakers: Jeremy Begley

Jeremy Begley, home-performance specialist and Web and social media manager with National Heating and Air Conditioning Co. in Cincinnati discusses how and why you should add home-performance philosophies to your contracting repertoire. Posted on Sept. 12.

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2014 September 15

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Venting R-22

The NEWS reported that a man received prison time for venting R-22. Should EPA step up enforcement?
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2014 National Plumbing & HVAC Estimator

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