Heating installations, methods and systems
A heating installation for premises includes a controller coupled to an air source heat pump; a premises heating arrangement; and a local weather sensing arrangement. The controller is configured to receive weather forecast data from an external source, and local weather status information from the local weather sensing arrangement. The controller is also configured to set a control algorithm based on both the weather forecast data and the local weather status information, and control a supply of energy from the air source heat pump to the heating arrangement based on the set control algorithm; and increasing energy input into the heating arrangement in anticipation of a forecast fall in the temperature of the air from which the air source heat pump extracts energy. A method of controlling a premises heating installation is also disclosed.
1. A heating installation for premises, the installation comprising:
a controller, and coupled to the controller:
an air source heat pump configured to extract energy from surrounding air;
a premises heating arrangement; and
a local weather sensing arrangement;
wherein the controller is configured to:
receive weather forecast data from a remote source, and local weather status information from the local weather sensing arrangement;
set a control algorithm based on both the weather forecast data and the local weather status information;
control a supply of energy from the air source heat pump to the premises heating arrangement based on the set control algorithm;
determine a forecast period of lowered temperature of the air from which the air source heat pump extracts energy based on the weather forecast data;
predict a likelihood that the premises heating arrangement will be used during the forecast period of lowered temperature, wherein the controller is configured to take account of occupancy or predicted occupancy of the premises and of scheduled activity of occupants of the premises in predicting the likelihood; and
control the supply of energy based on the predicted likelihood that the premises heating arrangement will be used during the forecast period of lowered temperature and increase energy input into the premises heating arrangement before the forecast period of lowered temperature of the air from which the air source heat pump extracts energy.
2. The heating installation of claim 1 , wherein the controller is configured to predict the likelihood based on past household behaviour of the premises, and/or on past behaviour of comparable households.
3. The heating installation of claim 1 , wherein the controller is configured to override a setting of the heating arrangement.
4. The heating installation of claim 1 , further comprising an energy store arranged to receive energy from the heat pump, the controller being configured to control a supply of energy from the air source heat pump to the energy store based on the set control algorithm.
5. The heating installation of claim 4 , wherein the energy store comprises a mass of phase change material that is used to store energy as latent heat.
6. The heating installation of claim 5 , wherein the controller is configured to control a supply of energy to the energy store to increase the amount of energy stored in the store as sensible heat.
7. The heating installation of claim 4 , wherein the energy store is arranged to supply energy to a hot water system of the premises.
8. A method of controlling a premises heating installation, the premises heating installation including a controller, and coupled to the controller: an air source heat pump configured to extract energy from surrounding air, a premises heating arrangement, and a local weather sensing arrangement, the method comprising, by the controller:
receiving weather forecast data from a remote source, and local weather status information from the local weather sensing arrangement;
setting a control algorithm based on both the weather forecast data and the local weather status information;
controlling a supply of energy from the air source heat pump to the premises heating arrangement based on the setting of the control algorithm;
determining a forecast period of lowered temperature of the air from which the air source heat pump extracts energy based on the weather forecast data;
predicting a likelihood that the premises heating arrangement will be used during the forecast period of lowered temperature, taking account of occupancy or predicted occupancy of the premises and of scheduled activity of occupants of the premises in predicting the likelihood; and
controlling the supply of energy based on the predicted likelihood that the premises heating arrangement will be used during the forecast period of lowered temperature, and increasing energy input into the premises heating arrangement before the forecast period of lowered temperature of the air from which the air source heat pump extracts energy.
9. The method of claim 8 , further comprising predicting the likelihood based on past household behaviour of the premises, and/or on past behaviour of comparable households.
10. The method of claim 8 , further comprising overriding a setting of the heating arrangement.
11. The method of claim 8 , wherein the installation includes an energy store arranged to receive energy from the heat pump, the method further comprising controlling a supply of energy from the air source heat pump to the energy store based on the set control algorithm.
12. The method of claim 11 , wherein the energy store comprises a mass of phase change material that is used to store energy as latent heat, the method further comprising controlling a supply of energy to the energy store to increase the amount of energy stored in the store as sensible heat.