The Wells

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With the proper calculation of the contour does not affect the green spaces. If the remaining land for the construction of a collector or not as the heat source is used rocky rock pipe is lowered into the borehole. It is not necessary to use a deep well, You can drill a few shallow, cheaper to get a general design depth. Sometimes the wells are used for foundation piles. Approximately 1 meter wells have 50-60 W of thermal energy. Thus, to install the heat pump output of 10 kW is required hole depth of 170 m. The refrigerant is fed directly to the source of Earth-type, which ensures high efficiency of geothermal heating system. The evaporator is installed in the ground horizontally or below the freezing depth in the hole with a diameter of 40-60 mm, drilled vertically or sloped to a depth of 15-30 m.

Due to such an engineering solution unit heat exchanger circuit is an area of several square meters, no need to install intercooler and additional costs for heating pump is operating. When used as a heat source in the nearby pond loop is placed at the bottom. This option is considered to be an ideal: not too long outer loop, high-temperature-environment (water temperature pond in winter is always above zero), high energy conversion efficiency heat pump. The estimated value of thermal power per 1 m pipe – 30 watts. Thus, to install a heat pump output of 10 kW should be put into the lake of a contour length of 300 m. In order to pipeline does not pop up on 1 running. m is set around 5 kg. To get the heat from the warm air (eg, exhaust ventilation systems) used a special model of the heat pump air heat exchanger. Heat from the air for heating and hot water can also be collected at the production. If the heat from the outside circuit is still not enough for heating in cold spells, practiced operating the pump in conjunction with an additional heat generator (say in such cases the use of bivalent heating circuit). When the street temperature drops below the current level (temperature bivalent), the work includes a second heat generator – usually a small electric heater.

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