on-Demand Gas Water Heater

Heat Exchanger Optimization

A 13L DGWH was optimized to reduce cost. Metal content was reduced 30% with no penalties in performance or pressure drops. 

Optimization steps included: 

1. Removal of copper to reduce cost 
2. Symmetrical arrangement for adaptation to manufacturing tool 
3. Removal of copper to reduce hot spots. This will allow the use of commercially-available lower temperature coatings
4. Improved exposure of top tube to hot gas increased efficiency without penalty.