Extra Edition

Beating the Heat

When you energize a motor, you get two outputs: a desirable one (work) and one that is not so desirable (heat). Equipped with this knowledge, you can understand why one of the criteria you must consider when selecting a motor for an application is the effect of operating temperatures on that motor.
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Showcase Home Designed to Ward Off Mold Growth

Partnership for Advancing Technology in Housing (PATH) partners have collaborated on the first-of-its-kind Mold Safe Model Home, which incorporates mold-resistant building practices and building materials. Construction is now being completed on the 3,000-square-foot two-story showcase home located in Chesterfield, N.H.
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Btu Buddy 53: Helping on a 100°F Day

The temperature is 102° outside. The complaint is from a car dealership. The showroom temperature is 85° and the dealer is having a big sale the next day. Bob finds the a/c unit is already doing all it can. Btu Buddy shows Bob some tricks to get more out of the system.
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OSHA Tips on Lockout/Tagout

This article explains the Occupational Safety and Health Administration (OSHA) standard for control of hazardous energy sources, why this is important, and what employers must do to protect their employees.
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Energy Legislation - Pick Your Poison

In June, the Senate passed an energy bill. This month, the House of Representatives followed with its own energy legislation. This points to a conference committee in order to hammer out differences. We'd all be better off, however, if Congress just dropped the matter altogether.
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Estimating Motor Efficiency in the Field

Some utility companies and public agencies have rebate programs in place to encourage customers to upgrade their existing standard-efficiency motors to NEMA Premium™ efficiency motors. Yet, to accurately estimate energy savings and determine annual dollar savings requires knowing the efficiency of the existing motor.
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Chiller Maintenance

The chiller maintenance tool that contributes most to a chiller’s overall efficiency is the daily log. An accurate daily log will provide a daily snapshot of the chiller’s operating characteristics and make abnormal conditions easy to spot.
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Multimedia

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2015 HARDI Fly-In

Highlights from HARDI's Congressional Fly-In in Washington, D.C. Post date: May 28, 2015.

Podcasts

NEWSMakers: Kevin Conrad
Kevin Conrad, president, Kevin Conrad Heating and Cooling Inc., Nantucket, Massachusetts, breaks down working in the New England climate, the benefits of insulation foam, and more.


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2015 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

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