Harvard Secures Free Hot Water

摘要

Would you turn down free hot water for your building? A solar thermal system applies the sun's energy to water heating and offsets your energy consumption. If you have the roof capacity for a PV array and building space for water storage tanks, you can capitalize on solar thermal technology. The solar thermal system uses three basic steps: 1.Energy is stored in solar fluid, typically glycol or water 2.The fluid is moved through a network of pipes 3.The heat is transferred to a storage water tank with a heat exchanger Harvard University has several solar thermal projects, providing 20-60% of each building's hot water needs.