Invention Grant
US08376030B2 Reducing cost of heating and air-conditioning 有权
降低采暖和空调的成本

Reducing cost of heating and air-conditioning
Abstract:
A system for heating includes a heat exchanger. The heat exchanger receives hot exhaust from combustion. The heat exchanger uses the heat from the hot exhaust to heat a fluid. A method for heating uses a heat exchanger. The heat exchanger receives hot exhaust and a fluid. The heat exchanger heats the fluid.
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