EXPERIMENTAL RESULTS OF AIR-TO-WATER HEAT PUMP APPLICATION IN A HEATING SYSTEM
DOI:
https://doi.org/10.31435/ws.2(92).2026.6054Keywords:
Coefficient of Performance (COP), Electrical Power, Thermal Energy, RefrigerantAbstract
This study aims to determine the feasibility, efficiency, and performance of utilizing an air-to-water heat pump (AWHP) within a space heating system under the harsh continental climatic conditions of Mongolia. For the field experiment, an F-015 model AWHP was integrated into a single-family residential house located in the Songinokhairkhan district of Ulaanbaatar, featuring a total floor area of 48.8m2 and a calculated peak thermal load of 4.29kW. Continuous data collection was conducted in March 2026 utilizing a cloud-based Smart Data Logger system monitoring parameters at 1-minute intervals. During the experimental period, the ambient outdoor temperature fluctuated within the range of -6.47...10.380C. Under these conditions, the thermal capacity generated by the heat pump ranged from 3.54 to 5.07kW, while the corresponding electrical power consumption varied between 1.16 and 1.25kW. Mathematical and statistical analysis of the experimental dataset revealed that the Coefficient of Performance (COP) of the heat pump fluctuated between 2.98 and 4.14 as a direct function of the outdoor air temperature. The system demonstrated highly stable operation with a low coefficient of variation (V = 8.84%). The findings confirm that AWHP systems operate reliably under moderate winter-to-spring transitional conditions and present a viable alternative to traditional coal-fired heating methods in cold regions.
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Copyright (c) 2026 Damdin Batkhuyag, Baatarkhuu Dorjsuren, Munkh-Erdene Bat-Erdene, Ganbold Dagvadorj, Amgalanzul Jargsalsaikhan
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