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2 AGH Drilling, Oil, Gas

2 2017

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The impact of graphite impact on the thermal conductivity of the solidified grout

Śliwa T., Kowalski T., Stryczek S., Wiśniowski D., Bieda A., Piwowarczyk S., Beszłej J., Naklicki M., Sapińska-Śliwa A.

AGH Drilling, Oil, Gas

2017

Vol. 34, no. 4

811--820

The fast development of low-temperature geothermal energy affects the search for newer and newer solutions and materials used in the construction of borehole heat exchangers. One of the most important factors affecting the correct operation of heat pump systems with borehole heat exchangers is appropriately selected solidified grout. Solidifies grout has to be characterized by the highest thermal conductivity and good sealing borehole heat exchangers. The paper will present the impact of graphite on the thermal conductivity of solidified grout.

The impact of diatomite on the thermal conductivity of solidified grout

Dubiel S., Śliwa T., Kowalski T., Stryczek S., Wiśniowski D., Bieda A., Piwowarczyk S., Beszłej J., Naklicki M.

AGH Drilling, Oil, Gas

2017

Vol. 34, no. 3

691--700

The use of suitable materials for the preparation of sealing grout is an important issue from the point of view of the correct construction of borehole heat exchangers and geothermal wells. The minimization of the loss of heat during the transport of thermal water in geothermal wells can be achieved by use of sealing slurries with reduced thermal conductivity. Such slurries are also recommended in the upper part of deep borehole heat exchangers and the upper part of energy piles. The publication describes the impact of the addition of diatomite as a material lowering the thermal conductivity of solidified grout.