| 摘要 |
<p>A system for control of a solar energy or heat pump type heating installation with a heat storage device, is constructed such that the actual value of the amount of heat stored within the heat storage device is compred with a preselected value for any given time of the year. If the heat stored in the storage system is found to be insufficient to meet the required level as specified for the time of year a higher rate of heating is applied to the storage device.</p> |
