Heating and Cooling Standards

Energy conservation does more than reduce the College's financial exposure. It reduces environmental and social costs as well. Energy conservation mitigates the numerous adverse environmental and social impacts associated with energy production and consumption. These include air pollution, acid rain and global warming, oil spills and water pollution, loss of wilderness areas, construction of new power plants, foreign energy dependence and the risk of international conflict over energy supplies.

Central Mechanical Systems

In 1998 the College developed a central chilled water plant to address the majority of the campus’ cooling needs. Where possible, buildings are designed to connect into central utility systems to take advantage of the load diversity. The central systems are almost always more efficient than individual distributed systems (which was the College’s design strategy before 1998).

Building Lighting

Efficient lighting design begins with daylighting; electric lighting should then be designed to maximize savings from daylighting. Because lamp, ballast and light fixture efficiencies keep improving each year, it is possible to design high-quality lighting systems with lower and lower wattage densities. More efficient plug-load and hard-wired equipment is also now available, due in part to the Energy Star program. Lighting uses over 20% of the electricity on campus. The College strives to use energy-efficient lighting via the following strategies: