| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide greenhouse heating equipment for energy saving by using a heating device of heating using heat made by burning fuel excluding fossil fuel, and efficiently heating a greenhouse using the heating device. <P>SOLUTION: This greenhouse heating equipment includes a first heating device 131 which makes hot water using heat made by burning fossil fuel, and a second heating device 132 which makes hot water using heat made by burning fuel excluding fossil fuel. A fixed flow rate from a heating pipe 133 is set so as to make a rate of flow interflowing from the heating pipe 133 high as the difference between a hot water temperature and a fixed hot water objective temperature becomes high. When the fixed flow rate from the heating pipe 133 is set higher than a prescribed rate, both the first heating device 131 and the second heating device 132 are combustion-operated, and when the fixed flow rate from the heating pipe 133 is set smaller than a prescribed rate, only the second heating device 132 is combustion-operated and the burning operation of the first heating device 131 is stopped. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
