An Investigation into Energy-Generating Revolving Doors

Abstract

This report analyzes the possibility of implementing energy-generating revolving doors in the new Student Union Building (SUB) at the University of British Columbia by making a triplebottom-line assessment. This is done by investigating the impact on the economy, society and environment. The economic impact results in a net savings in the operational costs of the building. Although the initial cost of the revolving door is significantly higher than the normal swinging or sliding doors—approximately $17,000 to $42,000 more—the long term savings from reduced energy consumption accounts for the initial cost in less than one year. Furthermore, because revolving doors limit air leakage, they prevent the fluctuation of building temperature that occurs with the use of swinging or sliding doors. Therefore, less energy is consumed by the air conditioning units and heating units, which respectively cool and heat the building to maintain an optimal room temperature. By using less energy, the new SUB would be producing less greenhouse gases. In addition, an energy-generating revolving door may also serve as an icon of the sustainability movement at UBC. Unlike other renewable energy sources, a revolving door involves an interaction between the users and the door itself, thereby allowing the users to feel like they are personally contributing towards sustainability. The report also recommends the number of revolving doors that should be installed, taking into consideration the need for a good balance of triple-bottom-line aspects. Ultimately, this report shows that the energy-generating revolving door is a favorable renewable energy source for the new SUB. Each door saves over 75% of the energy consumption from building heating and cooling, as compared to traditional doors. They generate nearly 4600 kWh of energy while reducing ten tonnes of greenhouse gas emissions per year, and they inspire people to think of how and why practicing sustainability is paramount in the building of a strong future.