| Title |
A Study on Recovery Time of Ground Water Temperature of Small Scale GWHP Using Standing Column Well in Case of Heating |
| Authors |
Lee Won-Ho ; Kim Ju-Young ; Hong Won-Hwa ; Ahn Chang-Hwan |
| Keywords |
Standing Column Well(SCW) ; Ground Water Heat Pump ; Recovery Temperature Time ; Heating Operation |
| Abstract |
The SCW ground heat pump system absorbs or releases ground energy from the ground water of ground heat exchanger. In other word, ground water is used to heating or cooling system through radiant ground energy or imbibe ground energy which oneself has. Especially when it is used as heating, the thermal efficiency of system is going to down because repetitive process of ground water will lost ground energy in standing column well system and if heating load is continually increase, energy of ground water may be frozen or there are no benefits to use ground energy as it owes just little energy. To solve these problems, exchanging water to ground heat exchanger discharge water to outside, and the way is used to maintain Efficiency continually as the way of to be supplied with fresh ground water into ground heat exchanger. However, this type causes waste of ground water. Therefore it is essential to discharge to discharge to outside and the repeat exchanging water timely on a heat exchanger, so there is not enough Study about this problem. Therefor through a study on restoration velocity of temperate ground water of ground heat exchanger, find out the best time to discharge water to outside and exchanging water to ground heat exchanger, and propose to the DB of design of the ground heat exchanger. |