Energy heat recovery system R-Eco

for boiler

Energy saving and efficiency are key factors for modern industry. One of the most significant energy users in a typical production facility is the boiler and, recognising this, Babcock Wanson offers the R-ECO solution, which provides improvements in boiler efficiency of up to 98%*. The R-ECO is a combination of two technologies: Combustion air pre-heating: This technology on its own increases the overall boiler but it can also increase the NOx emission. Flue Gas Recirculation (FGR): FGR helps reduce the formation of NOx emissions in the flue gas to ensure compliance with environmental regulations. Principle of operation: Exhaust Gas Combustion Air Preheating Economiser The benefits of “R-ECO” installation are most apparent where there is greater than 90% condensate return. As returning condensate is already at high temperature this makes it unsuitable for use with classic feedwater economisers. Other operating conditions required for successful R-ECO operation are flue gas inlet temperature above 130 ° C, flue gas temperature output ≈ 100 ° C, and Natural Gas fuel. Construction: Aluminium Exchanger Plate Casing: Galvanized steel Operating Conditions No other heat recovery sink than combustion air (e.g. in the case of condensate return ≥90%) Exhaust Gas Inlet Temperature ≥ 130 ° C Exhaust Gas Outlet Temperature ≈ 70 ° Fuel – Natural Gas For a boiler feed water temperature ≥ 110 ° C an approximate efficiency gain of 2.5%* For a boiler feed water temperature ≥ 105 ° C an approximate efficiency gain of 3%*