spiraxsarco.com/uk
7. Payback & ROI The potential payback periods for heat pipe heat exchangers are very much dependent upon a number of different variables, including hours of operation, exhaust temperatures, and price per kWh. However, payback periods of as little as 2-3 years are common.
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$VPRRWK¿QQHGK\EULGSLSHµWKURXJKÀRZ¶KHDWH[FKDQJHU of the gas to oil type was installed in a waste processing plant based in the UK. The application had particularly high inlet exhaust temperatures of 1000°C, which were catered for by the use of WKHµWKURXJKÀRZ¶PRGHO The application also had to cope with a very high particulate matter exhaust from the furnace, which was dealt with by removable panels, incorporated for cleaning. Overall, the installation provided a low fouling, easy
cleaning, low maintenance and high reliability solution with a payback period of less than six months.
Exhaust temperature in / out Water temperature in / out ([KDXVWZDWHUPDVVÀRZ
1,000°C / 250°C 135°C / 280°C
4,150kg/h / 9,200kg/h
Weight of unit
1,800kg 650Pa 940kW
Exhaust pressure drop
Energy recovered
Recovered energy value
£150k p/a
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