Effect of Anthropogenic Relief on the Efficiency of Hydrothermal Circulation Heat Pump System

Abstract

This paper describes the results of analytical and experimental studies performed at the geothermal test site of the Research Center of the Institute of Renewable Energy of the National Academy of Sciences of Ukraine. On the basis of experimental data, the necessity of a preliminary analysis of the existing anthropogenic impact on the underground aquifer when choosing the location of the hydrothermal heat pump system is substantiated. Parameters have been determined that show the presence of a technogenic impact on the hydrosphere in the area where the wells are located, which open the aquifer. The paper describes a hydrothermal heat pump installation. The characteristics of the measuring equipment are described. The results of experimental studies and analytical calculations are presented. The results of experimental studies of annual, seasonal and daily changes in water temperature in the aquifer and air temperature in the tubular annulus are presented. Changes in the hydrological parameters of a well that opened an aquifer under the influence of natural and urban processes were determined. A set of measures to reduce negative impact of the HydroPS system on water condition in the open aquifer has been defined. The heat pump system transformation coefficient has been calculated. Optimal designs of low-grade water energy extraction systems for the anthropogenically loaded conditions have been suggested. The data obtained during the study have important scientific and applied significance when designing hydrothermal heat pump systems.