HEAT PUMP | PEMBROKE COLLEGE Fuel for thought Use of a community heat pump at Pembroke Colleges mixed-use project in Mill Lane, Cambridge, is the latest in a long line of energy transitions on the university site. Andy Pearson looks at plans for the connection of both new and historic buildings E lectricity is replacing gas as a cleaner source of heat. The phase-out 1 in increasing the airtightness of the 42 May 2021 www.cibsejournal.com CIBSE May 21 pp42-44 Pembroke College heat pump Supp.indd 42 23/04/2021 16:06