Optimization of collector area and storage volume in domestic solar water heating systems with on–off control—A thermal energy analysis based on a pre-specified system performance

Araújo, António; Ferreira, Ana; Oliveira, Carlos Augusto Fernandes de; Silva, Rui; Pereira, Vítor

doi:10.1016/j.applthermaleng.2022.119630

Cited by 8 publications

(3 citation statements)

References 30 publications

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“…By increasing the area, the energy received by the solar collector increases, and the temperature increases. The results show that SF increases with the increase in an area [38,39]. The technically optimal point is the point at which we have maximum production from the sun.…”

Section: Resultsmentioning

confidence: 89%

Reducing Energy Consumption in a Poultry Farm by Designing and Optimizing the Solar Heating/Photovoltaic System

et al. 2023

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A solar heating system is designed to reduce energy consumption in a poultry farm. According to the physics and conditions of the indoor environment of the poultry building and the effect of the poultry weather conditions, the amount of 1.37 × 108 kJ/h during the year energy is required for heating. Then, by using double-glazed windows and insulation for the exterior walls of the building in the building architecture section, the amount of energy consumption is drastically reduced, and the required annual gas consumption is equal to 11,833 m3. The surface required for the collector is recommended to supply 50% of the energy from the sun with the rest from the hybrid system. The results showed that 26 m2 of a solar collector with an optimal slope of 45 degrees, and a tank volume of 440 L and a pump discharge of 1700 kg/h are required to provide 100% of energy. To receive the maximum amount of solar energy (maximum solar fraction (SF)), a collector surface equal to 30 m2 is required. However, when the economic point of view is considered, the collector surface equivalent to 26 m2 is recommended. To establish a balance, that is, 50% of the energy from the auxiliary system and the rest from the solar system, between the use of solar energy and the use of the auxiliary system, a collector area of 16 m2 is needed. Based on this, 60 photovoltaic modules, which are 10 cells in series in 6 parallel circuits, is the most optimal mode.

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Section: Resultsmentioning

confidence: 89%

Reducing Energy Consumption in a Poultry Farm by Designing and Optimizing the Solar Heating/Photovoltaic System

et al. 2023

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“…This property makes them ideal for enhancing the heat storage capacity of solar collectors. When integrated into solar collectors, PCMs can absorb excess heat during peak solar hours and release it later, thereby extending the duration over which the collectors can provide useful heat [13].…”

Section: Introductionmentioning

confidence: 99%

“…This is particularly important for systems with on-off control, where the balance between heat absorption and storage plays a critical role in overall efficiency. A thermal energy analysis based on pre-specified system performance can provide valuable insights into the optimization process [13].…”

Section: Introductionmentioning

confidence: 99%

A Numerical Study to Improve the Efficiency of Solar Collector used for water heating using Phase Change Material

Hazim A. Al-Zurfi,

Muna Ali Talib,

Qasim H. Hassan

et al. 2024

ARNHT

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Solar water heaters are an effective technology for harnessing renewable solar energy to provide hot water for households and businesses. However, their efficiency can be impacted by factors like intermittent sunshine, heat losses, and low radiation intensity. The aim of this study is to increase the efficiency of solar water heaters through the use of phase change materials (PCMs). PCMs have the ability to store latent heat during phase change, releasing it later when needed. This study uses numerical simulations to analyze the effect of integrating different PCMs into a flat plate solar collector design. The findings could then be validated experimentally and applied to improve the real-world performance of solar water heating systems. The PCMs are placed inside the collector to absorb heat during the day and release it after sunset to continue heating the water. The research seeks to determine the optimal PCM properties, structure, and placement within the collector to maximize heat storage and transfer. The efficiency and performance of the solar collector system with different PCM configurations have been compared to those of a conventional collector without PCM. The outcomes uncover that the use of suitable PCMs can significantly improve the efficiency and heat output of the solar collector, especially during periods of low radiation and after sunset. The optimal PCM configuration maintains higher water temperatures for longer, allowing solar water heating to continue into the evening. The results may provide valuable insights for using PCMs to boost the efficiency of solar thermal technologies

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A role of integrated microheaters in a microfluidics based point-of-care-testing and beyond for healthcare applications

Kulkarni,

Yashas,

Vyas

2024

Applied Materials Today

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Optimization of collector area and storage volume in domestic solar water heating systems with on–off control—A thermal energy analysis based on a pre-specified system performance

Cited by 8 publications

References 30 publications

Reducing Energy Consumption in a Poultry Farm by Designing and Optimizing the Solar Heating/Photovoltaic System

Reducing Energy Consumption in a Poultry Farm by Designing and Optimizing the Solar Heating/Photovoltaic System

A Numerical Study to Improve the Efficiency of Solar Collector used for water heating using Phase Change Material

A role of integrated microheaters in a microfluidics based point-of-care-testing and beyond for healthcare applications

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