Abstract
Effective utilization of natural energy by an Aquifer Thermal Energy Storage system has been a continuing research theme of our laboratory for 20 years. By start-up the heat storage performance was low, but it has been gradually rising throughout the years and has now apparently stabilized itself at a high value. The reason of the improved heat storage performance is that charge and back washing was repeated in the well. As the result, ferric colloid formed a dam around the well, and the ground water flow was cut off. The present paper determines the necessary pressure gradient for destroying the ferric colloid by back washing. Experimental verification is carried out by using a one-dimensional test equipment.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
