US 11,788,778 B2
Geothermal heat system having reduced heat source residual heat of geothermal heat pump
Jong Woo Park, Jeollabuk-do (KR); Jeong Soo Shin, Gyeonggi-do (KR); and Jin Yong Kim, Jeollabuk-do (KR)
Assigned to J&G CORP., Jeollabuk-Do (KR)
Filed by J&G CORP., Jeollabuk-do (KR)
Filed on Nov. 30, 2021, as Appl. No. 17/537,489.
Claims priority of application No. 10-2021-0040562 (KR), filed on Mar. 29, 2021.
Prior Publication US 2022/0307738 A1, Sep. 29, 2022
Int. Cl. F25B 30/06 (2006.01); F24T 10/10 (2018.01); F25B 41/20 (2021.01); F24T 10/00 (2018.01)
CPC F25B 30/06 (2013.01) [F24T 10/10 (2018.05); F25B 41/20 (2021.01); F24T 2010/50 (2018.05); F25B 2313/002 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A geothermal heat system having reduced heat source residual heat of a geothermal heat pump, the geothermal heat system comprising:
a ground heat exchanger unit allowing a geothermal heat exchange medium to exchange heat with the underground;
the geothermal heat pump allowing the geothermal heat exchange medium, which has exchanged heat with the underground while passing through the ground heat exchanger unit, to exchange heat with a coolant while passing through the geothermal heat pump so as to provide cooling/heating to a location of use;
a residual heat storage tank connected to a path connected in series, through which the geothermal heat exchange medium flows from the geothermal heat pump to the ground heat exchanger unit, to store a portion of heat source residual heat therein, thereby reducing an operating load of at least one of the underground and the geothermal heat pump, wherein the heat source residual heat includes warm residual heat produced as the geothermal heat pump provides cooling to the location of use and remaining inside the geothermal heat pump and in the geothermal heat exchange medium and cold residual heat produced as the geothermal heat pump provides heating to the location of use and remaining inside the geothermal heat pump and in the geothermal heat exchange medium; and
a geothermal heat source pump moving the geothermal heat exchange medium from the ground heat exchanger unit toward the geothermal heat pump,
wherein, even when the temperature of the location of use reaches a set temperature or a target temperature during cooling/heating of the location of use and thus the geothermal heat pump is stopped, the geothermal heat source pump continues running so that a portion of the heat source residual heat remaining in the geothermal heat pump is transferred on the geothermal heat exchange medium passing through the geothermal heat pump so as to be stored in the residual heat storage tank, and as an internal temperature of the residual heat storage tank gradually becomes the same as the temperature of the underground, a thermal load of the underground is removed, and thus, when the geothermal heat pump is restarted, the operating load of the geothermal heat pump is reduced.
 
4. A geothermal heat system having reduced heat source residual heat of a geothermal heat pump, the geothermal heat system comprising:
a ground heat exchanger unit allowing a geothermal heat exchange medium to exchange heat with the underground;
the geothermal heat pump allowing the geothermal heat exchange medium, which has exchanged heat with the underground while passing through the ground heat exchanger unit, to exchange heat with a coolant while passing through the geothermal heat pump so as to provide cooling/heating to a location of use; and
a residual heat storage tank storing a portion of heat source residual heat to reduce an operating load of at least one of the underground and the geothermal heat pump, wherein the heat source residual heat includes warm residual heat produced as the geothermal heat pump provides cooling to the location of use and remaining inside the geothermal heat pump and in the geothermal heat exchange medium and cold residual heat produced as the geothermal heat pump provides heating to the location of use and remaining inside the geothermal heat pump and in the geothermal heat exchange medium,
wherein portions of the geothermal heat exchange medium are sprayed as counterflows from an inner upper portion and an inner lower portion of the residual heat storage tank toward a central portion of the residual heat storage tank to collide with each other in the central portion of the residual heat storage tank, and then, the geothermal heat exchange medium is discharged through an outlet provided in the central portion of the residual heat storage tank to move toward the underground, so that an amount of heat exchange in the residual heat storage tank is increased.