22 April 2010 – A new UK hospital, scheduled to open later this year, is to use a combination of CHP and ground source heat pumps for its on-site energy supplies.
The Malvern Community Hospital will use advanced renewable and energy efficient technologies from Manchester-based ENER-G to make it one of the greenest hospitals in the country.
By generating its own green power, the hospital is projected to save £8700 (US$13,340) per year on its energy bills, and reduce its carbon emissions by 15 tonnes per annum. The National Health Service is responsible for around 3% of England’s total carbon dioxide emissions and has an annual energy bill of over £500 million.
Both technologies are being supplied as part of the eco-friendly design brief set by Interserve, which is contracted by Worcestershire Primary Care Trust to build the £18 million hospital. Capita Symonds is providing building services engineering and BREEAM (green building certification) consultancy. The scheme is expected to obtain an excellent BREEAM rating.    
The ground source system involves 25 boreholes and two heat pumps with combined capacities of 125 kW for both heating and cooling.
The CHP system is a reciprocating gas engine rated at 33 kW of electrical output that will also generate 55 kW of useful thermal output for the building and the ground loop for the heat pump.
ENER-G’s ground loops have a life-span of some 50 years, says the company.
Turnkey delivery of individual heat pump projects hinges on ENER-G’s in-house resources, including its own designers, drilling rigs, drilling technicians, mechanical installers and project managers.
The company has won certification for its expertise in renewable heat pump technology – the Approved Contractor certificate recognizes the quality of its design, supply, and installation of ground source heat pumps, in line with technical standards set out by the Microgeneration Certification Scheme.