Thermal performance of heat pipe evacuated tube solar collector integrated with different types of phase change materials at various location

Alshukri, Mohammed J.; Eidan, Adel A.; Najim, Saleh Ismail

doi:10.1016/j.renene.2021.02.143

Cited by 61 publications

(4 citation statements)

References 24 publications

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“…Alshukri et al studied the functionality enhancement of heat pipe evacuated tube collector (HPETC) with the integration of enhanced paraffin wax 28) and implemented on the various tube collectors 29) . Additionally, they examined how the design of the structure, the techniques, the working fluids, and the use of storage systems affected the performance of the heat pipe solar collector 30) .…”

Section: Introductionmentioning

confidence: 99%

Performance Enhancement of Electric Bus Air Conditioning System by Heat Pipe Equipment (Experimental Study)

Nuriyadi¹,

Putra²,

Alhamid³

et al. 2023

Evergreen

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Electric Vehicles (EVs) are considered a significant way to minimize dependence on fossil fuel. As one of the most energy-consuming auxiliary components in EVs, air conditioning should enhance its performance and minimize the power and energy consumption. In this experiment, a modular air conditioner prototype with additional heat pipe components for an electric bus air conditioner has been successfully constructed. In this study, a modular AC system testing was carried out before and after using heat pipes at various ambient temperature conditions. The results reveal that the heat pipes utilization in the modular AC system for electric buses increases the cooling capacity by about 15%, and reduces the power input level of the AC system by about 28%. This has contributed to raising of the system's Energy Efficiency Ratio (EER) of around 30%, and the heat pipe's average effectiveness of 7,5%.

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Section: Introductionmentioning

confidence: 99%

Performance Enhancement of Electric Bus Air Conditioning System by Heat Pipe Equipment (Experimental Study)

Nuriyadi¹,

Putra²,

Alhamid³

et al. 2023

Evergreen

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“…The instantaneous efficiency of the collector was obtained using scientific standards The results indicated that the thermal output of a collector is mainly affected by the volume flow rate of the working fluid. Alshukri et al [14] performed experiments on a conventional without HP and a HP-based ETC-SWH system with a PCM. They filled the tubes and two separate tanks with medical-grade paraffin wax.…”

Section: Introductionmentioning

confidence: 99%

Energetic, Exergetic, and Heat Transfer Assessment of PCM-Integrated Heat-Pipe-Based ETSC for Clear and Cloudy Weather Conditions

et al. 2023

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Solar energy’s most promising application is in water heating, followed by other solar thermal applications. In this investigation, a novel method of incorporating a phase-change material (PCM) between the annulus space of an evacuated tube and an aluminum finned heat pipe is employed. During day time, the PCM stores the excess amount of heat and releases it in order to heat the flowing water during high-demand/insufficient solar radiation. This study aims to evaluate the detailed heat transfer assessment and energetic and exergetic efficiencies of the developed PCM-integrated solar water heater in both clear and cloudy weather conditions at 20 LPH. The outcomes of the study found that the maximum useful amounts of energy collected daily for the clear and cloudy days were 10.65 MJ and 8.52 MJ, respectively, whereas temperatures of the stored water were found to be 45.2 °C and 41.4 °C on the next day at 6:00 a.m. for the corresponding days. The daily energetic and exergetic outputs of the designed system were 76.57% and 79.64%, and 2.37% and 1.38%, respectively, at fixed mass flow rate for the clear and cloudy day conditions. The overall heat transfer coefficients (UL) for both days were 0.75 and 0.72 W/m2 K, respectively. The findings show that the proposed system overcomes the issue of overheated heat pipes and can provide hot water even in cloudy/low-sunshine conditions.

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“…It was found that at the end of the experiment, the average water temperature inside the tank was observed 56 • C compared to 45 • C for the non-PCM tank because of latent heat capacity of the PCM to retain heat. Also, Alshukri et al [19] investigated the optimum place of paraffin PCM in an HP-ETSC and considered the PCM in two positions of attached to the water tank and inside the HP-ETs. They observed that for the case of PCM adjacent to the tank the energy efficiency increased by 36 %; whereas, in the other case, the performance of the collector was improved by 49 %.…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis of Shape-Stabilized PCM applied to a Direct-Absorption evacuated tube solar collector exploiting sodium acetate trihydrate and graphite

Sadeghi

Mehrali

Shahi

et al. 2022

Energy Conversion and Management

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Thermal performance of heat pipe evacuated tube solar collector integrated with different types of phase change materials at various location

Cited by 61 publications

References 24 publications

Performance Enhancement of Electric Bus Air Conditioning System by Heat Pipe Equipment (Experimental Study)

Performance Enhancement of Electric Bus Air Conditioning System by Heat Pipe Equipment (Experimental Study)

Energetic, Exergetic, and Heat Transfer Assessment of PCM-Integrated Heat-Pipe-Based ETSC for Clear and Cloudy Weather Conditions

Experimental analysis of Shape-Stabilized PCM applied to a Direct-Absorption evacuated tube solar collector exploiting sodium acetate trihydrate and graphite

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