Conserving Energy and $ The Campus Energy Conservation Advisory Committee, chaired by Vice Chancellor Don Wendel, assesses energy-use reduction opportunities and guides conservation initiatives on the Urbana-Champaign campus. Student, faculty and staff representatives from a wide range of academic and administrative areas make up the committee, which is finalizing a campus energy policy. Inside Illinois will publish an occasional column reporting the committee's work and other energy news. "Turn Off the Juice" New light-switch stickers will soon be obvious to campus faculty, staff and students. They will serve as a reminder to everyone about the importance of conserving energy by turning off lights when rooms are unoccupied. Energy Consumption: A Comparison During FY 93, the average energy use for the campus was 318,200 BTU/gross square foot (GSF) of building area. This figure encompasses a large number of buildings with a wide variety of uses and varying degrees of efficiency. A comparison of Lincoln Hall and Morrill Hall illustrates academic and laboratory use, respectively. Their gross area each is about 167,000 square feet. Energy consumption in Lincoln Hall in FY 93 was 58,800 BTU/GSF. At Morrill Hall the consumption was 492,500 BTU/GSF, or 8.4 times that of Lincoln Hall. Fume hoods, make-up air systems, and laboratory related equipment account for the increased use in Morrill Hall, typical of a laboratory type building. Although the consumption at Morrill Hall appears very high, several energy conservation projects (implemented from FY 85 through FY 92) have resulted in a 53 percent reduction in energy use from the FY 81 level. These projects included modified controls for fume hoods, fan speeds, heating and chilled water systems, outside air dampers and domestic hot water. Occupancy Sensors at MEB Occupancy sensors have been installed in the restrooms at Mechanical Engineering Building for about six weeks. They turn the lights on when the door is opened and (after a short time delay) turn the lights off when there is no one in the restroom. In the near future, O&M will be installing occupancy sensors in nine classrooms and possibly one of the lecture halls at MEB to further test their effectiveness and acceptability in conserving energy. Meter readings will be taken to determine the actual savings. Variable Speed Fans Electronic devices for fan- and pump-motor speed controls are being installed in new building projects such as the Grainger Engineering Library and the addition to the Law Building. These devices vary the frequency of motors to achieve lower speeds during low occupancy of the buildings and thus reduce electrical usage. A motor running at one half of its full operating speed will, in effect, use just 12 percent of the electrical power needed for full speed. Ten buildings received fan-speed controls in 1992 under joint funding by the Department of Energy, and 12 more buildings are being added in 1994 under the Energy 2000 program. O&M has conducted tests on several variable-speed devices. The devices chosen are more efficient than the various forms of mechanical air-control schemes on the market and are more reliable. Ethanol in University Vehicles The UI Car Pool has five Chevrolet Lumina sedans that run on 85 percent ethanol alcohol. That's right, only 15 percent unleaded gasoline is used in these cars. The "E-85" cars are essentially the same as other Luminas except for an automatic fuel-sensing valve and stainless steel fuel tank and fuel lines. The automatic valve (which adjusts the vehicles' operation for different percentages of ethanol) means drivers are unaware of fuel change effects. The garage provides E-85 fuel for other governmental agency vehicles as needed. All university vehicles and other equipment that can operate with 10 percent ethanol fuel blends are fueled with ethanol/gasoline (gasohol). The university has been a leader in gasohol use even before phasing in of ethanol fuel requirements for state vehicles. When university vehicles are acquired, a prime consideration in their selection is energy economy. Maintenance and repair programs at the university garage keep vehicles and equipment operating at their peak energy performance. Did You Know ... Of the total amount of energy used on campus, approximately 70 percent is for heating and cooling.