Abstract
The objectives of this project are to analyze waste heat recovery potential, economic analysis, heat exchanger and system design, and computer analysis programs. The heating demand and heat recovery potential at a Madison neighborhood bakery was conducted. The building has steam heat and natural gas is used in the hot water heater, the cooking stoves, and in the baking oven. Heat recovery potential was analyzed based upon fuel consumption in the baking oven, flue gas temperature, mass flow rate, and hours of oven operation. The feasibility of waste heat recovery systems is analyzed using life cycle cost and life cycle savings. For a first approximation, hand calculations were performed for air-to-air flat plate, fin-plate, and liquid-to-air tube type heat exchangers using the temperature and mass flow data from a pizza restaurant in Madison. Then a heat exchanger analysis program was written in interactive BASIC. The analysis indicates that heat recovery using the flat-plate and fin-plate exchanger designs is technically feasible and yields high effectiveness. (MCW)
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