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

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...

Full description

Saved in:
Bibliographic Details
Published in:Energies (Basel) 2023-10, Vol.16 (20), p.7018
Main Authors: Tihana, Jelena, Ali, Hesham, Apse, Jekaterina, Jekabsons, Janis, Ivancovs, Dmitrijs, Gaujena, Baiba, Dedov, Andrei
Format: Article
Language:English
Subjects:
Boilers
Climate
CO2 emissions
Commercial real estate
Costs
Efficiency
Electricity
Energy consumption
energy efficient
Energy resources
Force and energy
Fossil fuels
Heat exchangers
heat pumps
Housing, Single family
Natural gas
Performance evaluation
Temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:1996-1073
1996-1073
DOI:10.3390/en16207018