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Ground Source Heat Pumps (Geothermal). Why use the ground? Ground Temperatures below ~10m near constant throughout the year.

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Presentation on theme: "Ground Source Heat Pumps (Geothermal). Why use the ground? Ground Temperatures below ~10m near constant throughout the year."— Presentation transcript:

1 Ground Source Heat Pumps (Geothermal)

2 Why use the ground? Ground Temperatures below ~10m near constant throughout the year

3 How do you get useful heat from the ground? Heat Pump Cycle (refrigerator in reverse) Ground Side Low temperature resource Building Side Low Temperature Heating High Temperature Cooling 1 unit of electricity = 3-5 Units of heat or coolth

4 What do heat pumps look like?

5 Ground Coupled Heat Pump - Closed Loop Horizontal Ground Loop Less expensive … but Less Efficient External area required Vertical Ground Loop More expensive… but more efficient Require less external area

6 Installation Pictures

7 Suitable Applications Heating and Cooling Suited to low temperature heating (maximum of ~50) and high temperature cooling. Not suited to older buildings with high temperature heating systems 80/60 Suited to new build, well insulated buildings, under- floor heating, chilled beams or air based systems

8 Bio-Energy

9 Planning Aspects Requires a stack for larger facilities Needs good access and storage capacity Increased vehicle movements Important to differentiate between clean wood combustion and contaminated (waste) facilities or incinerators Woodland management wins and energy crops grown locally can deliver many benefits

10 Technical Very flexible, can produce heat, heat and power (CHP) or heat, power and cooling (trigeneration) Provides base load power The most important potential on-shore renewable for the SE Region Applicable to small, medium or large scale applications Traditional use in rural communities

11 NIMBYism Emotional response to energy centre plans – attempts to frighten people Based on incorrect information or even disinformation Not uncommon – counter with the facts

12 Wood Fuel Renewable energy source unlike others Directly replaces flexibility of fossil fuels Heat, electricity, cooling, or combined (CHP) Carbon neutral TV Bioenergy Wood Fuel Sources Management Harvesting Chipping Dry/Storage Transportation

13 Wood fuel supply

14 Slough Heat & Power

15 Wood fuel

16 Types of Wood Fuel Types of wood fuel include: –Logs –Wood chip –Wood pellets TV Bioenergy Wood Fuel Sources Management Harvesting Chipping Dry/Storage Transportation

17 Log Burners TV Bioenergy Wood Fuel Sources Management Harvesting Chipping Dry/Storage Transportation Up to 70% efficiency compared to less than 12% for open fires Systems available for space heating alone or with back boilers Buy a burner to suit the room

18 Log Boilers TV Bioenergy Wood Fuel Sources Management Harvesting Chipping Dry/Storage Transportation Systems can be semi- automated Rated up to 400kW Ideal for home workers Ideal for foresters/tree surgeons

19 Woodchip Boilers Rated from 40kW up to 1MW Full automated systems Need to store the fuel in a hopper adjacent to the boiler TV Bioenergy Wood Fuel Sources Management Harvesting Chipping Dry/Storage Transportation

20 Woodchip Boilers TV Bioenergy Wood Fuel Sources Management Harvesting Chipping Dry/Storage Transportation Low energy density fuel –18MJ/t compared to 36MJ/t for oil Vehicle access to fuel store Low cost fuel –1.5-2p/kWh compared to p/kWh for oil

21 Pellet Stoves Both pellets and stoves are becoming widely available in the UK Styles in both classic and modern Integrated hoppers Automated feed Thermostatically controlled TV Bioenergy Wood Fuel Sources Management Harvesting Chipping Dry/Storage Transportation

22 Pellet Boilers Require a third of the storage of wood chip boilers Boilers cost significantly less than woodchip boilers Fuel is more expensive than wood chip –£180/tonne – 3.6p/kWh Fuel can be delivered bagged or in bulk Hoppers can be built into the system TV Bioenergy Wood Fuel Sources Management Harvesting Chipping Dry/Storage Transportation

23 Hybrid Solutions

24 Small wind & solar energy …

25 GSHP with Solar Technologies

26 DKIT Hospital Newry DHS Industry Housing Land Town Hotel

27 HOLISTIC Holistic Optimisation Leading to Integration of Sustainable Technologies In Communities Main Partners Dundalk (Ireland) Modling (Austria) Neuchatel (Switzerland) Associate Communities Cross border – Newry & Bratislava Ministry of Environment (Italy)

28 Holistic Proposal – Demonstration Work packages 1.Biomass CHP & District Heating 2.Xerox wind turbine 3.Renewable Street lighting 4.Refurbishment - housing 5.Refurbishment – non residential 6.New Eco houses 7.New Eco non residential 8.Metering & DSM 9.Voluntary Agreements with Industry 10.Energy Management Bureau

29 Targets 20% renewable electricity in SEZ 20% renewable thermal in SEZ 40% improvement in energy performance in selected buildings Energy agreements with industry Upgraded planning by-laws Integration into wider community 20% renewable electricity in SEZ 20% renewable thermal in SEZ 40% improvement in energy performance in selected buildings Energy agreements with industry Upgraded planning by-laws Integration into wider community

30 Sources of Further Information

31

32 Project supported by GOSE on behalf of the SE Sustainable Energy Partnership Costs met from DTI/SEEDA/GOSE resources Full coverage since November 2005

33 SEE-Stats website

34

35 Contact TV Energy at:


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