With the increasing cost of conventional fuels and the focus on CO2 emissions there is now far greater reasons for using renewable sources of energy for heating greenhouses. The most common of these technologies for use in conjunction with our Hot Water Systems are: Biomass and Heat Pumps. Contact us if you are considering an ecofriendly solution to heating your greenhouse.
- Biomass in the form of a chip or pellet burner, or batch burner, can all be used to heat a glasshouse. This is not only more environmentally friendly, but also cuts running costs, especially if burnable wood is readily available.
- We have installed separate biomass boilers dedicated to glasshouse heating, and have also connected to district heating.
- The advantage of biomass boilers is they can run at temperatures up to 90 Deg C, which reduces the amount of heating pipe needed.
- Biomass is typically used in systems requiring 20kw of heat upwards.
- The installation cost of a biomass boiler is certainly many times, that of a conventional system.
- Chip Burners are very good on an estate with large wooded areas as fallen trees can be chipped and used to heat the buildings.
- Pellet burners are a better solution if the fuel is to be bought in.
Air & Ground Source Heat Pumps
- With Ground Source pumps heat is taken out of the ground, or lakes, either by installing horizontal ground collectors, or
vertical bore holes.
- They are advantageous if you have a large lake or field where they can be buried. Bore holes are better if space is at a premium.
- Ground Source Heat pumps utilize heat within the ground to heat a greenhouse.
- Ground source heating can run at efficiencies of up to 450%, which means your heating bill will be low, and combined with the renewable heat incentive from the Government, makes this a financially attractive option.
- A downside with Ground source heating is the low temperature of the water, which means more pipes in the glasshouse, adding to the cost.
- Air Source heating can save costs versus Ground Source as new technologies become more viable.
- If high temperature lifts are required in a greenhouse using a heat pump, it may be beneficial to install ‘Thermal Screens’. Details of these can be found in our ‘Greenhouse Fittings’ section.
Recent Installation of Air Source Heat Pumps at Logan Botanical Gardens
Harrier GD has recently completed a large heating project in the new plant house at Logan Botanical Gardens, which is a Regional Garden of Royal Botanic Garden Edinburgh. Air Source Heat Pumps were selected to be used as part of the ecofriendly installation, for this site. Images illustrate some of the installation and the glasshouse at completion of the project.