Expect unmatched performance, particular in use as a direct (sludge/sludge, manure/manure) heat exchanger. Up to +70% efficiency can be achieved, only using power for the pumps in daily operation.
Expect a heat exchanger that is field proven since 2006 and carefully developed step by step to its present state, with unmatched operation costs due to its low pressure loss (less power for the pumps), no maintenance and no cleaning needed for most common (WWTP and biogas) installations.
Expect the sludge/sludge heat exchanger to pay for itself, due to the considerable fuel cost savings. 1 to 2 years are the norm, sometimes even shorter, sometimes a bit longer.
Expect to save Co2 emissions, because of the fuel saving. Co2 emissions are reduced, depending on fuel type, by 2.5 to 5 kg Co2 per kilo fuel saved.
In other words, fuel savings are reduced by 20-30 kwh per m3 processed, Co2 emissions with 5 to 16 kg per m3.
As example, 10 m3/h processed per hour in a thermophilic (52-55 °C) installation, working 24/7, can save as much as 2700 Mwh, 270 ton fuel (at 10 kw/kg) and save the environment of 650 – 1000 t/year Co2.