HVAC

Variable Speed Drives are a Powerful Efficiency Tool

Carl Weinschenk

Motors historically either were on or off. Savvy energy managers can benefit from the fact that this no longer is the case.


Veolia Checks Into the UK’s Tallest Hotel

Carl Weinschenk

Combined heat and power (CHP) is getting quite a boost: When it is finished this autumn, the tallest hotel in the United Kingdom will use CHP to provide heat and hot water. Veolia’s technology will be used at the Novatel London Canary Wharf hotel, which will be 39 stories high and have 313 guest rooms,   …Continue Reading


Breaking the Ice with Thermal Energy Storage

Carl Weinschenk

Clever freezing and thawing of water can lead to significant cuts in peak energy demand.


Ameresco to Upgrade Federal Prison in Butner, NC

Carl Weinschenk

Ameresco announced this week that it has entered into an Energy Savings Performance Contract (ESPC) with the U.S. Federal Bureau of Prisons. Under terms of the contract, Ameresco will install energy and water conservation technology at the 776-acre Federal Correctional Complex in Butner, N.C. The contract is valued at $53.1 million. Ameresco says that the   …Continue Reading


HVAC/Lighting Controller from Acuity Brands

Carl Weinschenk

Acuity Brands has introduced the nLight ECLYPSE controller, which combines digital lighting and HVAC controls in a single platform. The platform provides building managers with the ability to configure, monitor and control systems through a single intuitive interface, the company says. The system, which uses the BACnet/IP protocol, is based on the ECLYPSE platform by   …Continue Reading


Field Demonstrations Validate Significant Energy Savings with Advanced Rooftop-Unit Control (ARC) Retrofits

Ken Silverstein

Rooftop-Units (RTUs) condition over 60% of commercial floor space in the United States. While typically viewed as one of the more affordable options on the market, traditional RTUs are poorly engineered without energy or maintenance costs in mind. Over the last ten years, a new Heating Ventilation and Air Conditioning (HVAC) retrofit technology has established   …Continue Reading


Schneider Upgrades Schools in Pittsburgh

Carl Weinschenk

The Keystone Oaks School District in Pittsburgh and Schneider Electric have completed a $3.4 million infrastructure project at four district schools. The schools had faced problems with their HVAC and control systems. Schneider was retained to upgrade those systems and install building automation systems. Now, the press release says, teachers can control temperatures in each   …Continue Reading


It’s Time to Take Risks and Embrace our Energy Future

Bert Valdman

We are now at a critical point in our energy system. It’s time to reboot the can-do culture that once animated our energy sector, and should always be at its core. It is time for us to find a better way, as Thomas Edison once challenged his team to do. I see three converging paths   …Continue Reading


Rheem and Fujitsu General Partner

Carl Weinschenk

Rheem and Fujitsu General Ltd. have entered what the companies call a strategic collaboration to expand both organizations’ heating and cooling product portfolios. Demand for ductless air conditioning is growing in the United States. The press release says that demand for mini-slit and commercial Variable refrigerant flow (VRF) systems has risen dramatically. Under the agreement, Rheem   …Continue Reading


For Maximum HVAC Savings, Follow the 3 Laws of Optimization

Alaina Bookstein

Facility executives in charge of demanding environments—hospitals, pharmaceutical manufacturing and higher education campuses, for example—often are challenged to cut costs and help their organizations meet sustainability goals. Heating, ventilation and air conditioning (HVAC) systems are the natural place to look: these systems typically account for 44 percent of commercial buildings’ energy consumption. Commercial buildings also   …Continue Reading