Estimation of energy savings resulting from the cooperation of an air to water heat pump with a solar air heater

Żukowski, Mirosław; Woroniak, Grzegorz

doi:10.1016/j.solener.2022.12.043

Cited by 8 publications

(2 citation statements)

References 49 publications

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“…Such activities also significantly reduce CO 2 and dust emissions into the atmosphere [19][20][21][22]. Mathematical modeling and computer simulations help decide which solutions can be implemented based on specific weather and environmental conditions [23][24][25][26][27][28]. Channel et al [29] provide an overview of the functional integration of hybrid renewable energy systems (HRESs) in multi-energy buildings, highlighting the many issues and potentials associated with the application of HRESs in the field of renewable energy and the residential construction area.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Hybrid Power-Heating System in a Single-Family Building, along with Ecological Aspects of the Operation

Woroniak,

Piotrowska-Woroniak,

Woroniak

et al. 2024

Energies

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This study evaluates a hybrid heating system in a single-family building in northeastern Poland, which has a temperate continental climate. The analysis covers two heating seasons in 2021/2022 and 2022/2023. The hybrid heating system includes an air heat pump HPA–08 CS Plus with a heating power of 8.2 kW (AHP), a condensing gas boiler VC146/5–5 with a power of 14 kW (GB–Condens.), and a solid fuel boiler with a power of 11 kW for central heating. Additionally, hot water is heated by a Basic 270 (DHW’s AHP) air–water heat pump with a power of 2 kW, utilizing a tank with a capacity of 270 dm3 equipped with two heating coils. The building’s average electricity consumption is around 5400 kWh/year. A 4.96 kWp photovoltaic installation is installed on the building’s roof at a 40° angle towards the south to supplement the hybrid system. The study aims to assess whether the PV installation can adequately cover the energy needs of the hybrid heat source for heating and hot water. Furthermore, the study calculates the emission of pollutants (CO2, SOx, NOx, CO, and PM10) into the atmosphere. The total annual electricity production from PV installations was 5444.9 kWh in 2021/2022 and 5684.8 kWh in 2022/2023. The excess electricity was stored in the PGE power grid as per the Prosumer settlement rules. The installed PV installation is sufficient to power the following devices annually: AHP, DHW’s AHP, and GB–Condens. However, the daily electricity production from the PV installation is not enough to cover the energy needs of the heat pump for heating during the cold months in Poland (I–III, XI–XII). It can meet the power needs of a PC all year round and can also be stored during the summer months, for example, in energy warehouses or by directly storing it in the PGE power grid. The use of the PV installation resulted in an average reduction in pollutant emissions into the atmosphere: CO2—94.1%, SOx—91.8%, NOx—95.6%, CO—9.7%, and PM10—32.1%.

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Section: Introductionmentioning

confidence: 99%

Analysis of the Hybrid Power-Heating System in a Single-Family Building, along with Ecological Aspects of the Operation

Woroniak,

Piotrowska-Woroniak,

Woroniak

et al. 2024

Energies

Self Cite

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“…The corresponding effect of the water heater on the load was studied under different load conditions and compared with the temperature control system, and it was found that the system was better than the reference system under different load conditions and optimal under intermittent load conditions. Zukowski [23], in order to solve the effect of evaporation temperature and condensation temperature on the energy efficiency of heat pumps, proposed to use the solar air heater as a preheating device to preheat air-source heat pumps to improve heat pump performance. The results showed that this device can reduce the maximum annual power consumption by about 16%.…”

Section: Introductionmentioning

confidence: 99%

Simulation Research on the Optimization of Domestic Heat Pump Water Heater Condensers

Han,

Feng,

Xiao

et al. 2023

Energies

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To improve the heat transfer coefficient of a condenser, this paper proposes using a fin-tube condenser to replace a smooth-tube condenser in a domestic heat pump water heater. The finite element method is used to analyze the heat transfer coefficient of fin-tube condensers with different design parameters. By comparing the results of experiments with those obtained using CFD methods, it has been determined that the CFD method used in this study is feasible. Simulation results showed that the heat transfer coefficient enhanced clearly. The total thermal resistance of the fin-tube condenser decreased by 7% through increasing fin thickness. The total thermal resistance of the fin-tube condenser increased by 1–1.3% when fin spacing was increased. The heat transfer coefficient decreased severely and the maximum total thermal resistance of the fin-tube condenser increased by 8.7% with increasing fin height. In 600 s, when the fin spacing, fin height, fin thickness and inner diameter were 14 mm, 12.5 mm, 1.2 mm and 22.5 mm, respectively, compared to the smooth-tube condenser, the fin-tube condenser could increase the final water temperature by 18.37%, and the heat transfer coefficient would increase by about 95%. This research could provide a low-cost way to improve the heat transfer coefficient of condensers in domestic heat pump water heaters.

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Thermal assessment of a dual-purpose air/water heating system with perforated concrete matrix and water storage

Messaouda,

Hamdi,

Hazami

et al. 2024

Energy Conversion and Management

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Estimation of energy savings resulting from the cooperation of an air to water heat pump with a solar air heater

Cited by 8 publications

References 49 publications

Analysis of the Hybrid Power-Heating System in a Single-Family Building, along with Ecological Aspects of the Operation

Analysis of the Hybrid Power-Heating System in a Single-Family Building, along with Ecological Aspects of the Operation

Simulation Research on the Optimization of Domestic Heat Pump Water Heater Condensers

Thermal assessment of a dual-purpose air/water heating system with perforated concrete matrix and water storage

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