Photovoltaic thermal (PV/T) system assisted heat pump utilization for milk pasteurization

Akmese, Sedat; Ömeroğlu, Gökhan; Çomaklı, Ömer

doi:10.1016/j.solener.2021.02.014

Cited by 14 publications

(4 citation statements)

References 17 publications

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“…The system coefficient of performance is based on the system generation capacity. The COP of the heat pump relates to the output or the heat transported by the condenser per unit time for water heating divided by the input which is the electrical power input into the compressor stated in Equation (17). As stated below, the COP of a heat pump water heater is given as a function of ambient air temperature and hot water temperature inlet 1.…”

Section: 3mentioning

confidence: 99%

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Long-Term Performance Analysis of Direct Photovoltaic Thermal-Assisted Heat Pump Water Heater Using Computational Model

Amibe

Eneyaw

2022

International Journal of Photoenergy

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The photovoltaic thermal system has a limitation in supplying hot water at the required temperature since it requires a supplementary heating system. One such system can be an air source heat pump operated by electricity from a PV/T system, which can be used to raise the temperature of the water preheated by PV/T to the required level. Such type system can also be called a hybrid PV/T-heat pump system, and it delivers thermal (hot water) and electrical energy. The performance of the hybrid PV/T-heat pump system was analyzed using the computational model for two Ethiopian cities, namely, Addis Ababa and Dire Dawa, which represent the highland and lowland regions, respectively. The simulation was conducted by inputting climatic data, daily hot water demand, and hourly hot water consumption patterns. Also, system design parameters such as PV/T area and peak Watt, PV/T warm water tank volume, air source heat pump water heater COP as a function of ambient temperature and circulating water temperature, and heat pump hot water tank volume. Besides, the effect of hot water consumption patterns (variability effect in three dissimilar cases constant, restaurant, and motel) on the system performance was examined. In addition, the effect of electric energy supply to the compressor of the heat pump using battery storage on the system performance was also investigated. In those diverse situations, the system in most of the cases generated hot water above 55°C and scored a COP of 3. The maximum value of hot water end-use efficiency of 66% was also obtained by making the hot water tank capacity about 50% of the daily hot water consumption size.

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Section: 3mentioning

confidence: 99%

“…Generally, the PVT-HP system performed satisfactory performance to deliver hot water at the required temperature year-round [16]. The system is not limited to generating hot water, electricity, and building air conditioning whereas it is functional for milk pasteurization in good performance [17].…”

Section: Introductionmentioning

confidence: 99%

Long-Term Performance Analysis of Direct Photovoltaic Thermal-Assisted Heat Pump Water Heater Using Computational Model

Amibe

Eneyaw

2022

International Journal of Photoenergy

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“…[5][6][7] Solar energy possesses unmatched resource potential and is expected to substitute fossil fuels in meeting society's needs. [8][9][10][11] Technologies related to solar utilization have obtained gratifying advancements in addition to conventional solar water heating 12,13 and solar power, 14,15 for example, solar desalination, 16,17 solar pasteurization, 18 solar disinfection, 19 and solar photocatalysis. [20][21][22] The danger of aquatic pollution lurks beneath the prosperous surface of industry.…”

Section: Introductionmentioning

confidence: 99%

A rational strategy for substantially enhancing the solar-utilization efficiency and organic-pollutant-degradation rate via mediated central processing unit filling

Wang

Tao

et al. 2023

Sustainable Energy Fuels

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“…Para tal, é essencial que tais equipamentos estejam integrados a fontes auxiliares de energia, que apresentem um menor potencial de gerar impactos ao meio ambiente, e que sejam de baixo custo, de modo a não onerar nas despesas operacionais. O uso da energia solar no processo de laticínios é uma alternativa para geração de calor de processo e geração de energia fotovoltaica (Akmese, 2021) (De Blas, 2003) (Quijera, J. A.,2011) (Kasera, 2021) (Sur, A., 2020). Sendo assim, o presente trabalho visa analisar a viabilidade técnica, econômica e ambiental do uso de energia solar no setor de laticínios.…”

Section: Introductionunclassified

Potencial Da Energia Solar Térmica E Fotovoltaica No Setor De Laticínios

Guimarães,

Guerra,

Silva

et al. 2022

Anais Congresso Brasileiro De Energia Solar - CBENS

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The objective of this work was to determine the potential for the use of solar energy in the dairy sector. To this end, a system for cheese production was designed for small producers in the Northeast region of Brazil, with a capacity to process 200 L of milk. Initially, the milk goes through the stage of heating, pasteurization, refrigeration, fermentation and coagulation, which take place in a single tank. Afterwards, the clot is molded, and finally matured. Thus, the processing system requires a tank with a heating and cooling system, and a cold chamber. The tank is designed to be heated using Liquefied Petroleum Gas (LPG), and cooled using a condenser unit coupled to a helical coil exchanger. The cold room is designed to use a condensing unit. The proposal for the insertion of solar energy was through a thermosolar system to assist the heating process, and a photovoltaic system to meet the energy demands of the refrigeration systems. The economic feasibility analysis was carried out using the techniques of Life Cost Saving (LCS), Payback and Internal Rate of Return (IRR). Additionally, the related global warming potential in each process was determined. The results showed that the cheese making system has implementation and annual operation costs of ≈R$41.000,00 and ≈R$24.000,00, respectively, considering a daily production cycle. The use of solar energy reduces the global warming potential (GWP) by 32.1% and requires an investment of ≈R$46.000,00 to reduce operating costs by 48%, presenting a payback of 2,4 and 6 years for the thermosolar and photovoltaic systems, respectively.

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Photovoltaic thermal (PV/T) system assisted heat pump utilization for milk pasteurization

Cited by 14 publications

References 17 publications

Long-Term Performance Analysis of Direct Photovoltaic Thermal-Assisted Heat Pump Water Heater Using Computational Model

Long-Term Performance Analysis of Direct Photovoltaic Thermal-Assisted Heat Pump Water Heater Using Computational Model

A rational strategy for substantially enhancing the solar-utilization efficiency and organic-pollutant-degradation rate via mediated central processing unit filling

Potencial Da Energia Solar Térmica E Fotovoltaica No Setor De Laticínios

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