Laboratorní výzkum prostupu tepla injektážními směsmi určených pro výplň kolektorů tepelných čerpadel

Abstract

In this thesis the heat carrying capacity for selected set of grout mixtures for grouting of ground source heat pumps heat exchangers is determined. Attention is paid especially on compared results for bentonite-cementous grouts and commercially distributed grouts of instant character. First part contains the heat pumps and heat exchangers theory with focus on ground source heat pumps systems and the borehole heat exchanger thermal resistance. The way in which the thermal conductivity of grout influences the borehole thermal resistance, and heat pump function is also mentioned. The bottom part of this thesis contains confrontation of grout mixture properties given by the ThermoSTEND® apparatus data. Possibility of obtaining the thermal conductivity of grout through the results from ThermoSTEND® apparatus is also discussed.