| 摘要 |
A service supply system comprises a first supply unit 41 to heat a first portion of a liquid to a first temperature and a second supply unit 42 to heat a second portion of the liquid to a second, lower temperature. A storage and distribution unit 3 receives the heated first and second portions of the liquid from the first and second supply units 41, 42. At least part of the first portion of the liquid is delivered to a distribution system 5 for use in heating one or more building units (2, Fig. 1), and at least part of the second portion of the liquid delivered to a building unit hot water heating mechanism 18 to supply hot water to a building unit (2, Fig. 1). The storage and distribution unit may include a stratification vessel (31a, Fig. 4) for both portions of liquid or a high temperature tank 31c for the second portion of liquid and a pre-heated liquid tank 31b for the first portion of liquid. The first supply unit may include a condensing boiler and the second supply unit may use a renewable energy source. |
