Highly Efficient Commercial Pulse-Combustion Gas-Fired Water Heater. Research and Development Report

摘要

A prototype of a gas-fired, pulse-combustion water heater for commercial applications has been developed. The prototype development program consisted of a market assessment, design specifications and testing procedures, and a fabrication and test program. The unit is an instantaneous model which has a gas input rate of 185,000 Btu/h and a thermal efficiency of 97%. The unit consists of air and gas decouplers, concentric gas and air flapper valves, neck distributor head, combustion chamber, four resonance tubes, exhaust decoupler, and a preheater tank with a secondary heat exchanger. (ERA citation 09:000708)