The DOE published a final rule (79 FR 38129) prescribing the standards for residential furnace fans July 3, 2014, which stated the prescribed energy conservation standards for these products would result in significant conservation of energy and are technologically feasible and economically justified.
Located in Southern California, just north of Los Angeles, the Conejo Valley has temperatures that range from below freezing in the winter to well above 100°F in the summer. The school district has hundreds of thermostats across 30 sites, which include school campuses, offices, and warehouses.
Recent developments in factory-assembled cooling tower technology can increase cooling capacity per cell by up to 50 percent, expanding the applications for so called “package” towers supporting HVAC and industrial processes. Although field-erected towers have long been the preferred product for process cooling in power plants and heavy industry, new robust designs and materials coupled with cost-saving building techniques make the new generation of modular products logical alternatives for a broader range of applications.
Manufacturers of all sizes across the spectrum of HVAC are getting involved with demand response, and they are participating because the technology within thermostats has made doing so relatively simple.
Retrocommissioning refers to identifying improvements that can increase the energy savings and performance of existing buildings. Considering that about half of all commercial buildings in the U.S. were constructed before 1980, it’s easy to see why there is a growing demand for contractors who offer retrocommissioning.
HVAC systems in commercial buildings consume a lot of energy, which is why many building owners and managers are looking at replacing their older, inefficient equipment with new high-performing systems.
Energy efficiency ratings (SEER/EER) of air conditioners and heat pumps keep rising, thanks to new technologies such as electronically commutated motors (ECMs), inverter-driven compressors, and advanced heat exchangers. These technologies have helped boost high-end cooling equipment ratings to the mid-20-SEER range, which was unthinkable just a few years ago.