Possibilities of using carbon dioxide as fillers for heat pipe to obtain low-potential geothermal energy

The use of low-potential heat is now possible especially in systems using heat pumps. There is a presumption that the trend will continue. Therefore, there is a need to find ways to be systems with a heat pump efficiencies. The usage of heat pipes seems to be an appropriate alternative to the established technology of obtaining heat through in-debt probes. This article describes a series of experiments on simulator for obtaining low-potential geothermal energy, in order to find the optimal amount of carbon dioxide per meter length of the heat pipe. For orientation and understanding of the conclusions of the experiment, the article has also a detailed description of the device which simulates the transport of heat through geothermal heat pipes.