Dave Pompei, Central Power Plant foreperson, checks one of three chillers the university owns. Wesleyan is being aggressive in its energy conservation efforts. Pictured at right is a view inside one of Wesleyan's three boilers. Wesleyan will be installing a new cogeneration system that will replace the use of one boiler in the summer. Posted 05/28/06 Wesleyan is pulling the plug on high energy usage. Something as simple as unplugging the office coffee machines for the weekend can save Wesleyan thousands of dollars a year, says Peter Staye, associate director of utilities management in Physical Plant. Although the burners are…