Types of heat pumps
Heat pumps use electricity to 'upgrade' the ambient heat from the surroundings and 'pump' it into your building. Typically for every 1 unit of electricity consumed 2 - 5 units of useful heat can be delivered.
Ground source heat pumps (GSHPs) extract heat energy from the ground and transfer it to within the heated space. Even at low temperatures the ground holds significant amounts of heat. Air source heat pumps (ASHPs) operate on a similar principle to GSHPs except that the source of the input heat is the air rather than the ground.
Heat pumps require electrical energy to drive them, this is taken from the grid and comes with a financial and carbon cost.
Therefore, it is absolutely vital that these systems are carefully designed for maximum efficiency to ensure the delivery of cost and carbon benefits.
Redcotec is expert at converting manufacturer's specifications under 'standard conditions' into anticipated 'real world' performance based on the underlying heat pump thermodynamics and the unique properties of your site. We are very familiar with modelling heat load profiles. This is a critical part of a good system design which is so often left to rough guestimates that can diminish carbon savings and cost you money in the long term.
Using Redcotec to prepare or check a system design gives you the confidence to proceed knowing that the equipment installed really can meet your target carbon savings.
Sources of low grade heat
- Horizontal ground loop
- Vertical boreholes
- Outside air
- Ground loop sizing
- Number and depth of boreholes
- Maximum heat extraction rate
- Ground conditions
- Underfloor heating design
- Total radiator area available
- Emitter circuit temperatures
- Heat load profile