| 摘要 |
<p>Domestic hot water heating system (1) in which heat is recovered downstream of a collective heating plant (2), supplied by a district heating primary circuit. The system (1) comprises a heat exchanger (3) supplied with water from a mixing chamber (4) by means of a variable speed pump (8). Heated water from the primary circuit can be supplied to the mixing chamber (4) by opening a make-up valve (6). Control means (8, 9) control the speed of the pump (7) and opening of the make-up valve (6) to produce domestic hot water at a selected temperature T4 and a minimum temperature at which water is sent back through a return system to a central boiler (5).</p> |
