Case Studies

Please click on the individual Case Studies below for more details:-

Air Source Heat Pump South Molton

Renewables

We selected a Vaiilant 15kw air source heat pump for this discerning customer who has just completed a new 3 bedroom, 2 bathroom country property.

It supplies all space heating and hotwater requirements for a satisfied customer.

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Ashford Cottage

Renewables

Client: Ashley, Ashford Cottage, Barnstaple, Devon
 
Project Scope: To replace an existing oil combination boiler with a biomass pellet boiler. The customer wished to site the new boiler in a small outbuilding along with an unvented hot water cylinder. To save space the a hand feed option was used that would allow for one month of use before refilling.
 
Solution: Optimum Heating supplied and installed KWB Easyfire 22KW pellet boiler with a 300litre fuelstore. The appliance was sized so that a buffer vessel was not required.
 
Cost of Project: £18,200

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Brownspit Farm

Renewables

Client: Mr Greaves, Brownspit Farmhouse, Bude, Cornwall
 
Project Scope: To replace an existing failed oil appliance with a biomass pellet boiler. The customer wished to construct his own new wooden plant room as there was not a suitable space within his property or an unused out building.
 
Solution: Optimum Heating supplied a design and drawing to enable the customer to build a new wooden, insulated and fire proofed building adjacent to the main property. A single KWB Easyfire 30KW, 600 litre and 7 tonne pellet store was installed in the new plant room. A short 3 metre pipework bridge connected the new plant room to the main building.
 
Cost of Project: £25,743

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Bury Barton

Renewables

Client: Bury Barton, Lapford, Devon
 
Project Scope: This Doomsday registered farm complex required renewable heating for two families with room for further expansion to replace an oil boiler, LPG boiler and Aga range. 
 
Solution: We calculated the total heat load for both existing families and future use and installed a KWB 60kw Multifire 1 boiler that can easily be converted between woodchip and pellet. Whether to use Pellet or Woodchip fuel was discussed with the client as this is a commercial installation. It was decided to proceed with Pellet for the following reasons:
a) The only available barn to site the boiler plant had small openings so if chip was to be used it would have to be blown in which is noisy and time consuming.
b) Both owners had busy careers so pellet offered a more consistent fuel quality with less opportunity for stoppages.
c) Clients were happy with RHI return on investment with pellet model.
 
The plant room was sited in a large vacant barn with internal heat mains supplying two separately rated properties
We also disconnected existing oil fired Aga and boilers and converted main house  central heating circuit into two zones, installed a 10 radiator circuit and upgraded all controls
 
Cost of Project: £54,250

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District Heating Networks

Renewables

Flexenergy's Flexalen pre-insulated pipe work was selected as the most appropriate product for a new District Heating Network installed to service 164 new Barratt London homes being built on Camden Road in London.The properties comprise of a mix of one, two, three and four bedroom apartments of which 50% are available for private purchase and 50% are being offered as affordable housing.A complex building layout and a constrained site presented the project team with multiple challenges and put the installation of below ground infrastructure on a critical path for the entire project.Working with Barratt London, Flexenergy was able to offer advice and solutions to meet the demanding construction programme and to reduce potential installation issues.The phenomenal flexibility of Flexenergy's Flexalen pre-insulated pipe helped to speed up the installation process and allowed for a reduction in the amount of joints required. In addition, the superior jointing technique of fusion welding enabled the pipework to be moved around the site without fear of joints breaking or leaking once buried in the ground.Storage space on site was at a premium so the project had to be broken down into phases, with each phase being carefully coordinated for delivery alongside the continually moving programme of works. This also meant that fabrications and fittings had to be changed or amended at short notice as obstacles to the planned route appeared.Flexenergy's proactive approach to the project by visiting the site as the programme progressed to review and ensure that the pipe installations were fitted according to plan and on schedule paid dividends as the project was delivered on time.Barratt Homes Senior Technical Manager, Richard Weaver, explained: "This project came with a unique set of circumstances that meant on site works had the potential to be considerably delayed. We were very aware that this aspect of the project could be an issue for us which, thanks to Flexenergy's professionalism and efficiency, was avoided. Flexenergy understood our objectives and ensured that they met with them as far as they could. We are delighted with the effort and resourcefulness shown by them and will welcome the opportunity to work with them again in the future".Andy Watts, Regional Manager for Flexenergy, added: "Thanks to the superior flexibility of the Flexalen pre-insulated pipe system we were able to speed up the installation process by removing some fabrications from the project. Our ability to react to changes demanded by site issues ensured a speedy supply and installation programme. We were able to bring our approved installer, Radius, onto the project who know our product very well and have our confidence in installation quality. "Close liaison between ourselves and Radius allowed Barratt London to concentrate on other parts of the project, whilst we planned the phases and delivered them in carefully coordinated sections as they were required and the storage space on site allowed."

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Hartland Farm

Renewables

Client: Hartland Farm, North Devon.
 
Project Scope: To provide a single efficient biomass boiler to replace an elderly oil system. This site has multiple heating zones and an indoor swimming pool.
 
Solution: This is a large domestic property in a remote area so our design consisted of a 45KW light commercial KWB boiler with a large 10 tonne pellet store. We worked with the client who designed his own header manifold linking the various heating zones including under floor heating and a swimming pool plant room. Some areas of the existing heating system were old and of unknown integrity so Optimum installed a heat exchanger separating the new biomass boiler from the existing house heating system. This ensured that any issues from the farmhouse would not effect the performance of the KWB biomass boiler.
 
Cost of Project: £36,298

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Little Hempston

Renewables

This is a domestic property where space to site the boiler and fuel store was limited. Pellet fuel was the obvious choice so combined with a suction system from a bespoke fuel silo a good solution was found.

Due to the small footprint of the KWB Easyfire and its fast modulation we were able to install this boiler without a buffer vessel easily in the space provided.

For additional efficiency full weather compensated mixing sets were installed incorporating underfloor, radiator and domestic hot water.

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St Georges House

Renewables

Client: St Georges Outdoor Activity Centre, Georgeham, Devon
 
Project Scope: This site had 3 elderly oil boilers supplying space heating and hot water, all required replacement. The site wanted to move to a renewable heat source as part of thier educational ethos as well as install efficient relaible equipment.
 
Solution: There was insuffcient room within the main building to site a biomass boiler and pellet store. We identified an outbuilding approximately 60m from the main house so the installation of a KWB 95kw Pelletfire 2 was installed with a 7 tonne big bag store. We ran underground heatmains to all three boiler rooms in the main house and made connection to their existing systems.
 
Cost of project: £68,000

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Stoneman Engineering

Renewables

Client: Stoneman Engineering, Willand, Devon
 
Project Scope: This engineering factory required space heating to workshop areas and offices. 
 
Solution: Optimum designed a wet space heating system using warm air fan units for the customer to install using their own contractors. Optimum then installed a KWB Pelletfire 195kw pellet boiler, a 3000litre buffer vessel and a bespoke plywood 10 tonne double auger fuel store. Optimum commissioned all systems alongside the customers own contractors.
 
Cost of Project: £81,250

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Streamaway Nursery, Georgeham, Devon

Renewables

Client: Nick, Streamaway Nursery, Georgeham
 
Project Scope: To install a biomass boiler in a disused outbuilding adjacent to his recently upgraded main house.
 
Solution: We installed a 35kw KWB Easyfire 2 with a 7 tonne big bag pellet store and connected to the existing system via a 10m internal heat main.
 
Cost of Project: £23,309

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