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Volume 16
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10.3390/en16207018
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Article

Hybrid Heat Pump Performance Evaluation in Different Operation Modes for Single-Family House

by
Jelena Tihana
1,*,
Hesham Ali
2,
Jekaterina Apse
1,
Janis Jekabsons
1,
Dmitrijs Ivancovs
1,
Baiba Gaujena
1 and
Andrei Dedov
2
1
Institute of Heat, Gas and Water Technology, Riga Technical University, LV-1048 Riga, Latvia
2
Department of Energy Technology, Tallinn University of Technology, Ehitajate Tee 5, 19086 Tallinn, Estonia
*
Author to whom correspondence should be addressed.
Energies 2023, 16(20), 7018; https://doi.org/10.3390/en16207018
Submission received: 21 August 2023 / Revised: 14 September 2023 / Accepted: 19 September 2023 / Published: 10 October 2023
(This article belongs to the Section J: Thermal Management)
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Abstract

Hybrid heat pump (HHP) represents a heating system (HS) that simultaneously utilises two or more energy sources. The key novelty is the integration of an optimised control strategy, effectively maximising the efficiency of both the heat pump and gas boiler segments. In this study, a HHP system that consists of an air-source heat pump (ASHP) and a condensing-type gas boiler (GB) for a two-story single-family house was calculated and validated. The results from three different calculation methods were obtained: the heat pump manufacturer’s calculator, the simulator programme, and the calculations based on real measured data. Two operation modes were tested: economic mode, where the cheapest energy resource becomes the priority, and ecological mode, where the system operates using the energy resource with lowest CO2 emissions. When comparing consumed energy, there was a 15.36% variance between the manufacturer’s program and the actual measured data, while for produced energy, the difference amounted to 25.81%. It was found that the balance point temperature is −7 °C, where the heat pump unit of the HHP system can cover necessary heat losses until that point, while the gas boiler operates at lower temperatures. Changes in electricity price can significantly influence the point of the system switch, but the possibility to cover heat loads of the heat pump unit always has to be taken into account.
Keywords: heat pumps; energy efficient; CO2 emissions heat pumps; energy efficient; CO2 emissions

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MDPI and ACS Style

Tihana, J.; Ali, H.; Apse, J.; Jekabsons, J.; Ivancovs, D.; Gaujena, B.; Dedov, A. Hybrid Heat Pump Performance Evaluation in Different Operation Modes for Single-Family House. Energies 2023, 16, 7018. https://doi.org/10.3390/en16207018

AMA Style

Tihana J, Ali H, Apse J, Jekabsons J, Ivancovs D, Gaujena B, Dedov A. Hybrid Heat Pump Performance Evaluation in Different Operation Modes for Single-Family House. Energies. 2023; 16(20):7018. https://doi.org/10.3390/en16207018

Chicago/Turabian Style

Tihana, Jelena, Hesham Ali, Jekaterina Apse, Janis Jekabsons, Dmitrijs Ivancovs, Baiba Gaujena, and Andrei Dedov. 2023. "Hybrid Heat Pump Performance Evaluation in Different Operation Modes for Single-Family House" Energies 16, no. 20: 7018. https://doi.org/10.3390/en16207018

APA Style

Tihana, J., Ali, H., Apse, J., Jekabsons, J., Ivancovs, D., Gaujena, B., & Dedov, A. (2023). Hybrid Heat Pump Performance Evaluation in Different Operation Modes for Single-Family House. Energies, 16(20), 7018. https://doi.org/10.3390/en16207018

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