2E (energy and exergy) analysis of solar evacuated tube-compound parabolic concentrator with different configurations of thermal energy storage system

Christopher, S.; Kumaresan, V.

doi:10.1007/s11356-022-20209-x

Cited by 8 publications

(5 citation statements)

References 25 publications

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“…This study adheres to a pragmatic approach to research, one that integrates qualitative analysis and practical design to efficiently fulfill the study's aims. The pragmatist approach to science places an emphasis on real-world applications and meaningful results [41]. A positivist approach is acceptable for this kind of secondary research.…”

Section: Research Philosophymentioning

confidence: 99%

A Comparative Study of Solar Heater Technologies for Domestic Water Heating

Patel

2023

IJSAR

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The present research investigates solar water heater technologies in depth to find environmentally friendly methods of heating water for the home. The research analyses the efficacy, economic viability, and environmental effect of many collector technologies via the use of qualitative analysis, practical design, and the review of secondary data. A detailed analysis of the differences between evacuated tube and flat-plate collectors reveals the advantages of each type in certain environments. The culmination of this study is a prototype of a cutting-edge evacuated-tube solar water heater that aims to maximize the use of solar energy. Integrating a 58/1800-sized vacuum tube into a thoughtfully crafted water tank is a perfect example of how far in-depth research and creative thinking can take solar water heating systems. Finally, this investigation provides not only a more thorough comprehension of solar water heater technologies, but also a practical answer that exemplifies the revolutionary potential of research-led design in resolving energy efficiency issues.

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Section: Research Philosophymentioning

confidence: 99%

A Comparative Study of Solar Heater Technologies for Domestic Water Heating

Patel

2023

IJSAR

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“…Thermal energy storage (TES) is an efficient method for storing energy compared to other energy storage technologies. [1][2][3] Among the thermal energy storage, latent heat energy storage (LHTES) offers higher energy storage density and virtually isothermal storage and retrieval, as reported by Christopher et al 4 and Thakur et al 5 Latent heat storage frequently involves the use of phase change materials (PCMs), which are classified into three types: organic, inorganic, and eutectic mixes. The most desirable organic PCMs are paraffins due to their favorable phase change characteristics, such as congruent melting and solidification with negligible subcooling.…”

Section: Introductionmentioning

confidence: 99%

Assessing performance of an external compound parabolic concentrator solar collector with cascaded latent heat thermal storage

Sathiya Satchi,

Muthuraman,

Thakur

et al. 2024

Env Prog and Sustain Energy

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This study presents quantitative results of charging experiments conducted on cascaded thermal energy storage system (CTESS) integrated with external compound parabolic concentrator solar collector (XCPCSC). Increasing mass flow rate in 2‐stage CTESS integrated with XCPCSC resulted in a 30% reduction in initiation time of phase change materials (PCMs) during charging, with a higher mass flow rate of 0.025 kg/s. However, due to disparate melting point temperatures of PCMs, phase transition in the two‐stage CTESS did not occur simultaneously, leading to poor heat transfer rates within the CTESS. To address this, study extended number of phases from two to three, resulting in a 1.5‐fold increase in rate of heat transfer compared to 2‐stage PCM system. The simultaneous melting processes at various stages in the CTESS maximized energy absorption, leading to a 25% increase in system efficiency. Notably, the values of energy stored efficiency and over‐all efficiency reached their peak values of 95% and 60%, respectively, between t = 12.00 h and t = 13.00 h. This time period also saw a significant increase in collector efficiency to 72%. These quantitative findings highlight importance of mass flow rate and PCM arrangement in achieving efficient heat transfer and system performance in a CTESS integrated with XCPCSC.

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“…Due to their energy storage density, latent heat thermal energy storage (LHTES) systems are promising TES systems. However, using phase change materials (PCMs) in LHTES systems is still a challenge for TES systems 5,6 . In the case of PCMs, low conductivity of material can lead to non‐uniform charging and discharging, resulting in incomplete phase changes and diminished performance 7,8 .…”

Section: Introductionmentioning

confidence: 99%

“…However, using phase change materials (PCMs) in LHTES systems is still a challenge for TES systems 5,6 . In the case of PCMs, low conductivity of material can lead to non‐uniform charging and discharging, resulting in incomplete phase changes and diminished performance 7,8 . Numerous methods, such as dispersion of micro or nano particles into PCMs, 9 adding fins, 10 and placement of heat pipes, 11 drops in pressure, particle settlement, and increase in size are major concerns in employing in the real time and dynamics systems.…”

Section: Introductionmentioning

confidence: 99%

“…This study can have practical implications in the design and optimization of TES systems. Recently, Christopher et al 21 examined the efficacy of arranging six PCMs in a cascading manner, integrated with a solar collector (SC). Their experimental findings indicate that selecting the appropriate arrangement of PCMs can improve the overall performance of both the system and SC.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation in the selection of phase change materials based on thermal stratification effect in thermal energy storage system

Christopher

Vikram

Bharathi

2023

Env Prog and Sustain Energy

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This study aims to evaluate the effects of thermal stratification on thermal energy storage (TES) systems during the charging process and choose suitable phase change materials (PCMs) for various layers. The research revealed that fiberglass insulation of 60 mm thick significantly decreased natural convection losses and increased the TES system's potential for energy recovery. For constant heat load, the charging time increased with increasing HTF inlet temperature, but remained constant for the first TES layer at a specified flow rate, resulting in increased storage capacity with minimal heat loss to the surroundings. The solar collector efficiency was shown to be dependent on solar radiation and collector efficiency, with peak efficiency seen at specified periods. The lowest melting point of PCMs at each layer 68°C, 62.7°C, 57°C, and 50°C was chosen based on temperature graphs. For comparing stratification behavior, the “MIX” number versus non‐dimensional charging time plot was effective. Additional experiments are needed to assess the selected PCMs' charging and discharging properties.

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2E (energy and exergy) analysis of solar evacuated tube-compound parabolic concentrator with different configurations of thermal energy storage system

Cited by 8 publications

References 25 publications

A Comparative Study of Solar Heater Technologies for Domestic Water Heating

A Comparative Study of Solar Heater Technologies for Domestic Water Heating

Assessing performance of an external compound parabolic concentrator solar collector with cascaded latent heat thermal storage

Experimental investigation in the selection of phase change materials based on thermal stratification effect in thermal energy storage system

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