| 摘要 |
A heating system for retrofitting to a building comprises a set of ducts for connecting to rooms or zones of a building, an inlet manifold coupled to a first subset of the ducts for extracting heat from the rooms or zones, an outlet manifold coupled to a second subset of the ducts and configured to deliver heat to the rooms or zones, at least one heat extraction device coupled between the inlet and outlet manifolds to recover extracted heat for the delivery to the rooms or zones. The system also comprises a plurality of temperature sensors to sense temperature of the rooms or zones, a plurality of occupancy sensors to detect occupancy of the rooms or zones, and a controller coupled to the temperature and occupancy sensors and outlet manifold to distribute heat between the rooms or zones. The heat extraction device may be a heat pump or heat exchanger. A solar heating system, which may be a roof tile incorporating a solar collector to heat the delivery air may be coupled between the inlet and outlet manifolds and a water circuit linking the heat extraction device to a radiator (fig 3) may be used for heating the delivery air to be passed to the rooms or zones. An additional heat extraction device may be provided to extract heat for heating a pre-existing water tank. |
