| 摘要 |
The present invention relates to a heat pump system comprising an underground heat exchanger. According to an embodiment of the present invention, the heat pump system is capable of exchanging heat of a heat exchanging fluid with a heat exchanging fluid circulating a first load and supplying the heat exchanging fluid to a second load. The heat pump system comprises: a heat exchanging part for allowing a heat exchanging fluid in the first load to flow in and to be discharged to the first load after exchanging heat with the heat exchanging fluid; at least one underground heat exchanger buried in the ground for heat-exchanging between the ground and the heat exchanging fluid supplied to the heat exchanging part; a heating source for heating the heat exchanging fluid supplied to at least one among the heat exchanging part, the underground heat exchanger, and the second load; a first pump for pumping the heat exchanging fluid heat-exchanged in the underground heat exchanger to the heat exchanging part; a second pump for pumping the heat exchanging fluid heat-exchanged with air in the heating source to the underground heat exchanger; a third pump for pumping the heat exchanging fluid heat-exchanged with air in the heating source to the second load; and a fourth pump for pumping the heat exchanging fluid heat-exchanged with air in the heating source to the heat exchanging part. The first pump is selectively operated in accordance with the first temperature difference (dT1) between the heat exchanging fluids flowing into the heat exchanging part from the first load. Only one among the second to fourth pumps is selectively operated in accordance with the first temperature difference (dT1) between heat exchanging fluids flowing into the heat exchanging part from the first load, and the second temperature difference (dT2) between the ground and the heat exchanging fluid flowing into the underground heat exchanger. |
