Extra Edition

WSU, Avista Collaborate on Smart Grid Project

Unpredictable Fluctuations in Renewable Energy Create Challenges for Utilities
November 18, 2013
One of the challenges of relying on renewable energy, such as solar and wind, is that changes in weather conditions can lead to sudden drops in the amount of power provided. One way utilities can handle this is by “shedding,” or reducing, some of their electrical load.


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Troubleshooting Challenge: A Split System Heat Pump That’s Not Cooling

November 4, 2013
Our troubleshooting problem involves a split system heat pump in which the outdoor unit is operating in an 85°F ambient, and when you arrive in response to the customer’s no cooling complaint, you find the indoor fan operating normally, and you also note that 240 volts is read at L1 and L2 of the outdoor unit.


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PP-R Piping Option Offers Big Material Cost Savings

Contractor Tabs Aquatherm Blue Pipe for Boiler System Retrofit
November 4, 2013
For the retrofit of a boiler system installed in the 1960s, the contractor selected Aquatherm Blue Pipe® polypropylene-random (PP-R) piping for the job because of its flexibility and material and labor cost savings.


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Can the Millennials Take Us to a New Future?

November 4, 2013
How can you not like a book that begins, “The future is not what it used to be,” quoting Laura Riding and Robert Graves from 1937? The book Millennial City: How a New Generation Can Save the Future, by Dennis Walsh and Glen Hiemstra, addresses the millennial generation and the near future.


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Automated Logic Provides Control for World’s Tallest Data Center

The 32-Story, 1.2 Million-Square-Foot Tower Is Located in Lower Manhattan
November 4, 2013
Automated Logic Corp. (ALC), a leading provider of building automation systems, is providing critical building monitoring and control for Intergate.Manhattan, believed to be the world’s tallest high-rise data center.


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Btu Buddy 127: A Hunting TXV

October 21, 2013
Bob and Tim were doing a routine service contract call. They had fastened gauges to the compressor at the condensing unit and had a temperature lead fastened to the suction line at the evaporator coil. They were observing the pressures and temperatures and Tim said, “The suction pressure is not stable. Isn’t it supposed to be stable during a long running cycle?”


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TAG Mechanical Installs HVAC, Solar for Net-Zero Village Hall

Facility Is First Net-Zero Municipal Building in New York State
October 21, 2013
Mechanical contracting firm TAG Mechanical Systems Inc. announced that it provided HVAC mechanical systems and a 54 kW solar photovoltaic (PV) system for the Skaneateles Village Hall in Skaneateles, N.Y. The facility is the first municipal net-zero energy building in New York State.


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Being Prepared for an EEOC Investigation

Recent Trends and Tips
October 21, 2013
The U.S. Equal Employment Opportunity Commission (EEOC) has taken an increasingly aggressive posture toward enforcement actions against employers. Employers should be aware of these troubling trends in EEOC behavior and be prepared to properly respond to an EEOC complaint.


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Church Recommissioning Project Yields Energy Savings, Utility Rebates

Payback Period for the Church Will Be Less Than Eighteen Months
October 21, 2013
Grace Church, a non-denominational congregation in Eden Prairie, Minn., is saving more than $100,000 annually in utility charges as a result of completing a recommissioning of its facility.


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HVACR Tips: Creating a Frame for Return Air Grilles

October 7, 2013
To establish the openings for return air grilles, you can use a frame made on the job from sheet metal. It forces the wall hangers to cut the return air openings as they install the sheetrock.


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