| 摘要 |
This invention relates to a safety cooling circuit for a solid fuel boiler and a domestic heating system incorporating such a safety cooling circuit. The safety cooling circuit comprises a plate heat exchanger having a primary side and a secondary side. The primary side has a primary charging inlet for reception of a heating fluid supplied by the solid fuel boiler, and a primary discharge outlet for delivery of the heating fluid back to the boiler. The secondary side has a secondary charging inlet for reception of a cooling liquid and a secondary discharge outlet for delivery of the cooling liquid from the heat exchanger to a drain. A temperature controlled valve is operable to permit the cooling liquid to flow through the secondary side to the drain on the temperature of the heating fluid supplied by the boiler exceeding a predetermined temperature. In this way, a relatively simple and inexpensive yet effective arrangement of safety cooling system is provided. Furthermore, the arrangement can be modified with relative ease to provide practically instantaneous hot water to the domicile. |
