| 摘要 |
<p>PURPOSE:To enable operation corresponding to a heating load to be made in a heating system having a secondary heating medium circuit utilizing phase changes by an arrangement wherein the supercooling degree of the heating medium in the outlet of a radiator is detected to vary the flow rate etc. of the heating medium. CONSTITUTION:In operating the titled heating device, when a heat supply source 1 and a pump 6 are operated, the heating medium circulated by the pump 6 flows into a heat exchanger 3 where it is heated to gasify by the heat supplied by the heat supply source 1 are then flows into a radiator 4. In the radiator 4, the gaseous medium radiates heat to provide heating, and as a result, it condenser and is returned through a liquid receiver 5 into the pump 6. In this case, if the heating load drops to reduce the amount of heat radiation in the radiator 4, then the supercooling degree of the heating medium in the outlet of the radiator 4 decreases. The supercooling degree is detected by a detector 8 to reduce the number of revolutions of the pump 6 through a freguency converter 9. Reversely, if the heating load increases, then the detector 8 controls the pump 6 to increase the number of revolutions thereof.</p> |
