Heat-from-sewage system to be made in Nottingham

SHARC Energy Systems, the UK-based subsidiary partner of Canadian firm International Waste Water Heat Exchange, is setting up a plant in Nottingham to manufacture a sewer heat recovery system.

Waste water is a mixture of sewage and gallons of hot water from showers, dishwashers, washing machines and sinks. The waste water leaves a building at an average temperature of 21°C and maintains a fairly constant warm temperature as it travels through the sewer to the treatment plant.

SHARC has developed a heat recovery system that uses a heat pump to capture the warmth of the waste water and then transfers it to the clean water stream entering a building. The system is suitable for buildings where there are large numbers of people, such as hospitals, schools, student accommodation and leisure centres.

The heated water can be used in appliances such as washing machines, dishwashers, showers and even radiators. Because the system operates as a closed loop, dirty water never contaminates the clean flow.

Ten billion litres of sewage are created every day which SHARC claims contain sufficient latent heat to run the heating and cooling requirements of every industrial building in the UK.

Managing director Russ Burton said: “The SHARC Energy System uses what is usually a building’s waste by taking the raw sewage, treating and cleaning it, then using it to create a highly cost-effective alternative heat source.”

SHARC Energy Systems has been awarded £40,000 from Nottingham Technology Grant Fund to launch the manufacturing plant in the next 18 months.

This article has been based on an article published by Building4Change.