Consider the conditions found at a food and beverage facility outside of Memphis, Tenn., not long ago. With an outside air temperature of 100°F (38°C), the boiler plant exhaust was 90°F (32°C). That is right — on that hot summer day, you could cool off by standing above the short stainless steel boiler exhaust. Condensing heat recovery technologies made it possible.
Condensing heat recovery technologies are not the only means of recovering waste heat used in industrial processes these days. Many simple projects such as liquid-to-liquid heat recovery, boiler feedwater economizers and the use of high-grade heat to generate steam or hot air from exhaust gas streams are effectively applied. In fact, they often are correctly implemented before condensing heat recovery is considered.