Case studies

Cornwall – Thermia Ground source heat pump – New Build – Domestic RHI

New Build - Thermia - Ground Source Heat Pump - Vertical bore holes - heating - hotwater - swimming poolThis exclusive new build development in Cornwall has been built with no expense spared. To meet the standards required for an A rated energy efficient house a Thermia ECO 42kW ground source heat pump with 8 x 100m vertical boreholes distributed from a sealed manifold chamber. The heat pump supplies a 500L heating buffer tank and 2 x 250L heat pump optimised hot water cylinders. The buffer tank supplies the wet under floor heating system and indoor swimming pool.

The ground collector is flushed and filled with a diluted Ethylene Glycol mixture (20%). THERMOX DTX has been tested and classified as Non-Toxic 1 by an EPA 2 certified Laboratory.

The heat pump is capable of storing domestic hot water at 60˚C with a secondary return that pumps the hot water around the building meaning you have instant hot water at tap outlets.

To increase system efficiency and performance, the Thermia Solution Controller has been specified. The web based user interface allows remote monitoring of the system with;

• Access to control strategies and interface parameters
• System overview
• Datalogging with presentation in graphical charts
• Alarm notification through e-mail or SMS

Due to the varying load conditions during the `bedding in` period (12 months), South West Energy Services Ltd, provide a FREE service where we will monitor and optimise the system remotely.

As this is a self build the client will be entitled to the Domestic RHI which will generate a revenue of £40,000 over the next 7 years.

South West Energy Services - Cornwall - Thermia ECO 42 Ground Source Heat Pump - 500L Buffer Tank - 2 x 250L DHW Cylinders - 8 x 100m boreholes - - Domestic RHI

Torquay – Air source heat pump replaces oil boiler – RHI

Dittisham Air Source Heat Pump Oil
We were asked by the client to provide a renewable energy solution to replace the existing oil fired boiler. After conducting the building heat loss calculations and looking at the available Domestic RHI payments the logical choice was to use 2 Mitsubishi Ecodan air source heat pumps in cascade (master and slave). This means the heat pumps are enabled based on the load conditions.

The buffer tank supplies the existing under floor heating system and the hot water is pumped vis a secondary return to the tap outlets. Pre insulated quad pipe connects the air source heat pumps to the plant room.

Combined with inverter technology the system is optimised for part load efficiency. The system was designed with a 400L Joule stainless steel heat pump optimised cylinder and 200L buffer tank. The new FTC 5 controller and MELCloud allows internet access to all of the heat pumps settings.

Upon completion a new EPC was provided to calculate the Domestic RHI payments which totalled £12,835 over the next 7 years. These figures are on top of the fuel saving and user friendly control system.

Mitsubishi Ecodan W140 & W50 Air Source Heat Pump - Heating & Hot Water - Dittisham - Devon - Replaces Oil2

Somerset – Air Source Heat Pump (Replaces Electric Storage Heaters)

We were asked by the client to provide a renewable energy solution to replace the existing electric storage heaters. After conducting the building heat loss calculations and looking at the available Domestic RHI payments the logical choice was a Mitsubishi Ecodan air source heat pump. The system was designed with a 300L Joule stainless steel heat pump optimised cylinder and 200L buffer tank. The new FTC 5 controller and MELCloud allows internet access to all of the heat pumps settings.

As the property used storage heaters, new distribution pipe work was fitted throughout which was split in to 2 independent heating zones. A combination of Polypipe overlay under floor, radiators and a Dimplex Smartrad provides all the homes space heating requirements.

Upon completion a new EPC was provided to calculate the Domestic RHI payments which totalled £10,977 over the next 7 years. As part of our ongoing customer support service we returned to the property 4 weeks later to check system operation. Over the month of November this 4 bedroom property cost £47 to provide all of the homes heating and hot water. This is 300% lower than the previous electric storage heaters.

Mitsubishi Ecodan W140 300L Air Source Heat Pump - Dimplex Smartrad - Somerset

Bodmin – Air Source Heat Pump & Solar PV

Bodmin - Mitsubishi Ecodan W85 Air source heat pump & 4kW PV

This air source heat pump system has been designed and installed to replace an old oil fired AGA with back boiler. Due to the existing radiators not being capable of working at the new design of temperature of 45˚C, all the existing emitters were replaced with new Stelrad K2 radiators with thermostatic valves. In addition to the radiator upgrade the kitchen was fitted with a Myson kick space heater due to the limited wall space and the conservatory is heated with a Dimplex Smartrad (Fan assisted).

The system is controlled by the new Mitsubishi FTC5 controller with weather compensation and the MELCloud for access via the internet or your smart phone.

In addition to the Mitsubishi Ecodan W85 air source heat pump we also fitted 4kW of Solar PV using the latest Solar Edge technology with micro inverters. The PV will on average reduce the running cost by a further 25%. We are expecting the customers annual fuel bill to be reduced by 70%!.

Not only are the fuel savings huge but the customer is also entitled to the FIT for PV, netting nearly £20,000 over the next 20 years and the Domestic RHI payments totalling £6388 over the next 7 years.

Mitsubishi Ecodan W85 and 170L FTC5 optimised cylinder with 4kW Solar PV - Bodmin - Cornwall

Trowbidge – Ground Source Heat Pump

Trowbridge - New Build - Thermia Diplomat G2 6kW - Ground Source Heat Pump - Uponor - Under Floor - RHI Compliant

This new build development in Trowbridge (Somerset) has been built to the latest building regulations. The Danfoss \ Thermia Diplomat ground source heat pump with an integrated 180L heat pump optimised hot water cylinder was specified. This is complimented with a Uponor and Heatmiser wet under floor system using the traditional method of 16mm PEX pipe buried in screed. Due to the high insulation properties of the building heating was not required on the first floor but we suggested installing under floor in diffuser plates for the bathroom. Who doesnt like a warm floor in the bathroom?

The Danfoss Thermia range of heat pumps has been specifically designed to maximize efficiency with market leading efficiency and hot water production. The compact design & integrated hot water cylinder make the unit ideal when space is an issue.

Internal modulating circulation pumps maximize efficiency and performance while reducing the annual running cost.

The Thermia Diplomat G2 has market leading hot water production. This is made possible by two technologies;

Hot Gas Water heater, is patented technology that utilizes rejected energy from the heating cycle to produce free hot water simultaneously.

Tap Water Stratificator, is patented technology developed to stratify hot water in the tank to ensure optimum performance and maximise usable hot water.

Trowbridge - New Build - Thermia G2 - Ground Source Heat Pump - Uponor - Under Floor - RHI Compliant

Hayle Buisness Centre – Ground Source Heat Pump

Hayle Marine - Clivet XENN Ground Source Heat Pump - Heating - 8 x 100m Bore holes - SD Soultions

As a specialist in commercial ground source heat pumps we were asked to provide a turnkey package for the design and installation of a system capable of supplying heating and cooling to this flag ship renewable energy centre in Hayle, Cornwall.

Using our expertise in designing heat pump systems that provide heating and cooling we are able to store rejected energy from the cooling cycle within the bore hole array which is then harvested during the heating operation. A total of 8 x 100m bore holes were drilled in the car park and distributed from a sealed manifold chamber.

Not only does this increase the performance and efficiency of the heat pump but also reduces the capital cost due to fewer bore holes being required.

From our extensive commercial range we selected 2No Clivet XENN Ground Source Heat Pumps working in cascade to provide increased part load efficiency.  A BacNet building management interface provides remote access to the 80kW heating\cooling system.

The heat pump supplies a 800L buffer tank providing space heating at 45˚C and cooling at 7˚C to the Uponor under floor system.

The building is in the process of claiming the Non Domestic RHI tariff which will provide a revenue for the next 20 years.

Hayle Marine - Clivet XENN Ground Source Heat Pump - Heating - 8 x 100m Bore holes

Pencoys School – Ground & Air Source Heat Pump

Pencoys School - Cornwall - Thermia - Danfoss Ground & Air Source Heat PumpWe were asked to tender for the design and installation of a ground source heat pump system to replace an existing system installed by the market leaders in commercial heat pumps at the time, Earth Energy.

Due to the unknown design and location of the existing bore hole array just replacing the heat pumps like for like was not an option. After conducting a thermal response test on the ground array and careful consideration we came up with not only a design that could utilise the existing bore holes but also provide the total buildings heating load and importantly within budget.

To backup our design and ensure the bore holes could meet the extraction rates for heat pump we conducted a thermal response test on the system. This allowed us to accurately select a ground source heat pump that could operate within the design tolerances. The data collected also highlighted that a second heat pump would be required to meet the buildings heating load. Due to the geographical location and concerns with drilling new bore holes where existing probes are buried we proposed a cascade controlled system with an air source heat pump.

Using the latest Danfoss Thermia commercial range of ground and air heat pumps we are able to combine the 2 technologies through a Network controlled manager the Danfoss Solution Controller (DSC). The system has been designed to be optimised under part load conditions meaning the DSC will sequence the order and starting of the 2 heat pumps depending on ambient air temperature and the buildings heating load.

Pencoys School - Cornwall - Thermia - Danfoss Ground & Air Source Heat Pump - Boreholes

Health Centre – Ground Source Heat Pump

Brighton - Health Centre - Commercial Ground Source Heat Pump - Heating & Cooling - Climaveneta 70kW ATv 2020

As a specialist in commercial ground source heat pumps we were asked to provide a turnkey package for the design and installation of a system capable of supplying heating and cooling to a new health centre in the heart of Brighton\Hove.

Using our expertise in designing heat pump systems that provide heating and cooling we are able to store rejected energy from the cooling cycle within the bore hole array which is then harvested during the heating operation. A total of 10 x 100m bore holes were drilled in the car park and distributed from a sealed manifold chamber.

Not only does this increase the performance and efficiency of the heat pump but also reduces the capital cost due to fewer bore holes being required.

From our extensive commercial range we selected the Climaveneta ATV 2020 Ground Source Heat Pump with a BacNet building management interface providing 70kW of heating\cooling.

The heat pump supplies a 1000L buffer tank providing space heating at 45˚C and cooling at 7˚C to the Uponor under floor system.

The Health Centre is in the process of claiming the Non Domestic RHI tariff which will provide a revenue for the next 20 years.

Health Centre - Commercial Ground Source Heat Pump - Heating & Cooling - Climaveneta 70kW ATv 2020

New Build – Air Source Heat Pump

Bigbury On Sea - Devon - Mitsubishi Ecodan W85 Air Source Heat Pump & Uponor Under Floor - New Build

This exclusive new build development in Bigbury on Sea (Devon) has been built with no expense spared. To meet the standards required for an A rated energy efficient house a Mitsubishi Ecodan W85 air source heat pump with a 210L heat pump optimised hot water cylinder was specified. This is complimented with a Uponor wet under floor system using the traditional method of 16mm PEX pipe buried in screed and diffuser plates for timber floors.

The award winning Mitsubishi ECODAN air source heat pump has been specifically designed to operate in ambient temperatures as low as –20˚C. The heat pump has also been awarded the Quiet Mark for its ultra low noise levels meeting the requirements under Permitted Development and factory coated to protect against salt corrosion in coastal locations.

Capable of storing domestic hot water at 60˚C the system also utilises weather compensation to modulate the heating flow temperature increasing the Seasonal Performance Factor (SPF) and Coefficient of Performance (COP)

It is the preferred choice for housing developers looking to meet Code 4/5.

Inverter Driven Compressor

The inverter allows the system to vary the speed of the compressor matching output to load requirements resulting in increased efficiency.

  • Low start current (5A)
  • Low Noise 14kW 53dBA nominal
  • Low Noise Mode 7°C/46dBA

Bigbury On Sea - Devon - Mitsubishi Ecodan W85 Air Source Heat Pump & Uponor Under Floor

All Saints Church – Air Source Heat Pump

All Saints Church - Long Ashton - Bristol - Clivet WBAN Air Source Heat Pump - 2 x Joule 500L Heating Buffer Tank - Jaga Fan Assisted Radiators

We were asked to tender for the design and installation of an air source heat pump system to replace an existing oil fired boiler and ducted air heating system.

In partnership with Low Carbon Exchange and MBL Consultants we have provided not only an economical and viable heating solution but also maintained the historic integrity of the building.

Using the latest Clivet WBAN 105kW Air source heat pump with twin compressors and built in inverter driven smart pumps the system is capable of delivering 60˚C effortlessly to the emitter circuits.

The combination of Jaga fan assisted radiators and a Uponor wet under floor system  maintains a balanced and comfortably environment with a fully programmable and weather compensated control system.

The Church is also in the process of claiming the Non Domestic RHI tariff which will provide a revenue for the next 20 years.

All Saints Church - Long Ashton - Bristol - Clivet Air Source Heat Pump - 2 x Joule 500L Heating Buffer Tank - Jaga Fan Assisted Radiators

Clevedon – Air Source Heat Pump

Duck Lane - Clevedon - Somerset - Mitsubishi Ecodan W85 Air Source Heat Pump - Installer South West Energy

This new build development in Clevedon (Somerset) has been built to the latest building regulations. The Mitsubishi Ecodan W85 air source heat pump with a 180L heat pump optimised hot water cylinder was specified. This is complimented with a Heatmiser wet under floor system using the traditional method of 16mm PEX pipe buried in screed and radiators for the first floor.

The award winning Mitsubishi ECODAN air source heat pump has been specifically designed to operate in ambient temperatures as low as –20˚C. The heat pump has also been awarded the Quiet Mark for its ultra low noise levels meeting the requirements under Permitted Development and factory coated to protect against salt corrosion in coastal locations.

Capable of storing domestic hot water at 60˚C the system also utilises weather compensation to modulate the heating flow temperature increasing the Seasonal Performance Factor (SPF) and Coefficient of Performance (COP)

It is the preferred choice for housing developers looking to meet Code 4/5.

Due to our MCS accreditation the end user was able to claim over £4500 in domestic RHI payments over the next 7 years.

Inverter Driven Compressor

The inverter allows the system to vary the speed of the compressor matching output to load requirements resulting in increased efficiency.

  • Low start current (5A)
  • Low Noise 14kW 53dBA nominal
  • Low Noise Mode 7°C/46dBA

Clevedon - Somerset - Mitsubishi Ecodan W85 Air Source Heat Pump - Installer South West Energy

© Copyright - South West Energy Services Ltd