Space heating and domestic hot water at the new East Riding Community Hospital is being supplied by a combination of biomass and gas fired boilers from Hoval. This combination gives the hospital an efficient and responsive low carbon heating system that also qualifies for the Renewable Heat Incentive (RHI).
The new £19 million, 30 bed community hospital in Beverley, East Yorkshire opened its doors at the end of July 2012, replacing the ageing 12 bed Westwood Hospital. It also includes a minor injuries unit and a GP out-of-hours service.
The hospital was constructed under the ProCure21 initiative and Interserve was the lead developer for the project. To meet with NHS low carbon design criteria the design brief included a biomass component from the outset and was put out to tender in compliance with Procure21 procedures. Having considered a number of tenders, Interserve selected Hoval.
The primary boiler is a 425kW STU biomass boiler manufactured at Hoval's factory in Newark, which is designed to meet the base heat loads through the year. This is supplemented by two SR Plus 500 gas-fired boilers which meet peak demands and will meet domestic hot water demand when no space heating is required.
As well as helping the hospital to reduce its carbon emissions, the Hoval STU boiler is eligible for payments under the RHI, providing a source of extra revenue for the next 20 years.
The latest generation of Hoval STU biomass boilers features the FlameTronix control system, specially developed for the STU boiler. The FlameTronix system ensures optimal wood pellet combustion resulting in 'best in class' efficiencies of 92 per cent as well as 'best in class' particulate emissions when used in conjunction with wood pellets produced to the EN+ A1 standard. Independent tests confirm that the boiler achieved less than 5 mg/MJ particulate emission without the need for any additional particulate abatement system.
The FlameTronix control system is web-linked for remote monitoring and is designed with ease-of-use in mind for the boiler room end-user. The on-board controls are also compatible with commonly used building management system protocols.
STU boilers are available in outputs ranging from 150 to 975kW. They are backed by a comprehensive fuel storage, buffer vessel design and installation service. For ease of installation the latest STU boilers use a standardised skid mounted design that includes pumps, fans and fuel delivery augers, thus minimising plant footprint and commissioning time. Also featured as standard in the new version are variable speed drive controls on all auger screws as well as automatic ignition and automatic furnace de-ashing