| 摘要 |
A dairy heat reclamation system has at least one vapour compression circuit 1 including a compressor 2, a condenser 3, an expansion device 5 and an evaporator 6 used for milk cooling. A heat exchanger 10 is inserted between the compressor and the condenser for heat removal, and water is recirculated through the heat exchanger to two or more hot water storage vessels 11, 12, preferably via a splitter 20. Water may be drawn from the vessels via combiner 19 for pumping back to the heat exchanger. Regulation of the vapour compression circuit may be achieved by monitoring the pressure at the outlet of the condenser. If two or more condensers are utilised, a respective heat exchanger may be inserted before each condenser, with each heat exchanger feeding a separate storage vessel. Preferably, heated water is drawn off via a further combiner 22 and supplied to points of use 24-28 or to an additional water heater to provide a further temperature increase. In use, the system is designed to store recovered heat in a relatively large volume of water which is heated to a lower temperature and allows existing plant to meet increased water requirements with increased energy efficiency. |
