With the controls, advanced energy-efficiency, the commercial building can easily cut by an average of fifty-seven percent their HVAC (heating, ventilating and air conditioning) electricity use and the result found by a trial (year-long) of advanced controls at different commercial buildings, grocery stores and malls across the country. The PNNL (Pacific Northwest National Laboratory) of the Department of Energy conducted the study and demonstrated that the Commercial HVAC saved higher energy than a prediction.
The HVAC boxes called as packaged units (HVAC) placed on the roofs of some commercial buildings. These packaged units (HVAC) consume pretty equal amount of energy of 2,600 trillion (British) units (thermal) or 8 million residents (U.S.).
Srinivas Katipamula, the lead researcher of the study and his PNNL colleagues found that air handling units (HVAC) have better controls in case of using packaged units (rooftop HVAC). Based on the conditions outside and inside of a building, they tried to adjust the operations with packaged units automatically. Using variable-speed motors and sensors, the controls determine how fast and when should ventilation fans run and make sure the units can use cold air naturally in lieu of indoor mechanically cooling air.
Actually, everybody knows that heating & cooling consume a huge amount of energy as most of the buildings don’t have sophisticated control systems. However, if the advanced controls are properly installed at working, real commercial building, then the energy efficiency of the air conditioning systems clearly demonstrates its true performance and energy-efficiency.
The PNNL team was working with various controls and some companies started developing and processing advanced controls in the meantime. The PNNL team installed some energy-efficient and commercially available HVAC units (rooftop) at some commercial buildings. They were amazed to see the results as it cuts almost 57 percent of energy on an average in comparison with standard operations. In fact, the range was 20 to 90 percent (energy savings). However, the bigger buildings (or malls) saved more energy compared to smaller buildings. Moreover, the stores (that ran ventilation) save more energy as these are usually open relatively long hours.
In fact, the researchers found that the HVAC units or advanced controls would help to save a lot of money every year for the building owners. This is for sure that the owners of the buildings would be inspired by the figures and install the advanced controls for greater savings.