Abstract
A mathematical model of the open geothermal cyclic system consisting of one production well and several injection wells is presented. The production well is supposed to pump hot water from an underground geothermal reservoir. After the use for heating purposes the cooled water is pumped back into the aquifer through the injection wells. The influence of the location of injection wells relative to the producing well on the change in water temperature in the producing well is investigated. The results of numerical calculations showed that the location of injection wells on a given area has a significant effect on the temperature change in the producing well. Several variants of the location of injection wells at which the temperature of the water in the producing well will be maximum are given.
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