Experimental investigation on passive cooling, thermal storage and thermoelectric harvest with heat pipe-assisted PCM-embedded metal foam

Li, W.Q.; Li, Y.X.; Yang, Tianyu; Zhang, T.Y.; Qin, Fei

doi:10.1016/j.ijheatmasstransfer.2022.123651

Cited by 32 publications

(6 citation statements)

References 30 publications

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“…The rational use of increasing the thermal resistance in the heat transfer process for Type-II and Type-III can stabilize the power generation process without affecting the steady-state electrical output capacity. For example, in the literature [25], Li et al also pointed out that adding a heat pipe could further reduce the heat source temperature and regulate the TEG output performance. Due to the excellent heat dissipation capacity of Type-III, its minimum temperature is only 302 K, which is because the heatsink has a low thermal The differentiation of thermal electromotive forces can also be explained by the position of the thermoelectric single leg, the thickness of the ceramic bulk, and the effect of the cement matrix.…”

Section: Effect Of Encapsulated Structurementioning

confidence: 99%

“…Li [25] increased the contact area between heat-dissipating metal and PCM by changing the porosity of porous foam, 0.82 and 0.96, and found that the TEG voltage output of 0.96 porosity was significantly better than that of 0.82, and the TEG thermal management temperature of 0.96 porosity was slightly lower than that of 0.82. This trend is consistent with the results shown in this section by changing the heat dissipation area.…”

Section: Effect Of Heat Dissipation Areamentioning

confidence: 99%

“…As illustrated in Figure 10, the temperature difference between the cold side and hot side variation with heat input temperature is presented. Based on the Seebeck effect, the thermal electromotive force is positively proportional to the temperature Li [25] increased the contact area between heat-dissipating metal and PCM by changing the porosity of porous foam, 0.82 and 0.96, and found that the TEG voltage output of 0.96 porosity was significantly better than that of 0.82, and the TEG thermal management temperature of 0.96 porosity was slightly lower than that of 0.82. This trend is consistent with the results shown in this section by changing the heat dissipation area.…”

Section: Effect Of Heat Input Temperaturementioning

confidence: 99%

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Structural Study of the Thermoelectric Work Units Encapsulated with Cement Paste for Building Energy Harvesting

Lai,

Hao,

Wei

et al. 2024

Materials

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Cement-based material encapsulation is a method of encapsulating electronic devices in highly thermally conductive cement-based materials to improve the heat dissipation performance of electronic components. In the field of construction, a thermoelectric generator (TEG) encapsulated with cement-based materials used in the building envelope has significant potential for waste heat energy recovery. The purpose of this study was to investigate the effect of cement-based materials integrated with aluminum heatsinks on the heat dissipation of the TEG composite structure. In this work, three types of thermoelectric work units encapsulated with cement paste were proposed. Moreover, we explored the effect of encapsulated structure, heat dissipation area, the height of thermoelectric single leg, and heat input temperature on maintaining the temperature difference between the two sides of the thermoelectric single leg with COMSOL Multiphysics. The numerical simulation results showed that under the conditions of a heat source temperature of 313.15 K and ambient temperature of 298.15 K, the temperature difference between the two sides of the internal thermoelectric single leg of Type-III can maintain a stable temperature difference of 7.77 K, which is 32.14% higher than that of Type-I and Type-II (5.88 K), and increased by 26.82% in the actual experiment. This work provides a reference for the selection and application of TEG composite structures of cement-based materials combined with aluminum heatsinks.

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Section: Effect Of Encapsulated Structurementioning

confidence: 99%

Section: Effect Of Heat Dissipation Areamentioning

confidence: 99%

Section: Effect Of Heat Input Temperaturementioning

confidence: 99%

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Structural Study of the Thermoelectric Work Units Encapsulated with Cement Paste for Building Energy Harvesting

Lai,

Hao,

Wei

et al. 2024

Materials

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“…An example of a PCM thermal energy battery applied directly beside the building windows is shown in Figure 7. A different application for phase change materials in solar plants or electronic systems is described by Li et al [67]. The ability to isothermally store large amounts of thermal energy was used to reduce the temperature of electronic systems working as thermoelectric energy generators (TEG).…”

Section: Phase Change Materials In the Form Of Thermal Energy Batteri...mentioning

confidence: 99%

“…It is obvious that increasing a partition or building element's thermal capacity alone, without first investigating the thermal conditions at the location where a phase change A different application for phase change materials in solar plants or electronic systems is described by Li et al [67]. The ability to isothermally store large amounts of thermal energy was used to reduce the temperature of electronic systems working as thermoelectric energy generators (TEG).…”

Section: Phase Change Materials In the Form Of Thermal Energy Batteri...mentioning

confidence: 99%

Modern Thermal Energy Storage Systems Dedicated to Autonomous Buildings

2023

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This paper presents a detailed analysis of the research into modern thermal energy storage systems dedicated to autonomous buildings. The paper systematises the current state of knowledge concerning thermal energy storage systems and their use of either phase change materials or sorption systems; it notes their benefits, drawbacks, application options, and potential directions for future development. The rapid proliferation of studies on installation systems, new composites, and phase change materials requires a systematisation of the subject related to short- and long-term thermal energy storage in building structures. This paper focuses on assessing the validity of the current improved thermal energy storage solutions for buildings with very high energy efficiency standards and buildings that are energy-independent. The paper presents the current results of the energy and economic analyses of the use of heat storage systems in buildings. This paper shows the optimal heat storage systems for autonomous buildings. Moreover, it also shows other potential ways to develop systems and composites capable of storing heat in autonomous buildings.

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Advanced Design and Manufacturing Approaches for Structures with Enhanced Thermal Management Performance: A Review

Sun,

Zhi,

Zhou

et al. 2024

Adv Materials Technologies

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Advanced design methods and manufacturing techniques are crucial for developing thermal management structures, essential for the efficient operation of complex equipment. This study provides a thorough review of design methodologies and advanced manufacturing technologies for thermal management materials and structures. It identifies key challenges and critically evaluates the integration of innovative design principles, such as biomimicry and topology optimization, into thermal management solutions. The analysis delves into the evolution of design theories and preparation techniques, with a specific focus on modern needs and research directions, particularly highlighting components fabricated using additive manufacturing and their effectiveness in meeting advanced thermal management requirements. Current research focuses on designing structures tailored to various cooling methods, including air‐cooling, liquid‐cooling, heat exchanger cooling, and heat pipe cooling. These designs utilize phase change materials, electrocaloric cooling, and thermoelectric cooling materials to achieve optimal thermal management performance. Additionally, emerging innovations like solid‐liquid mixed heat transfer and the elastocaloric effect are garnering increased interest. Enhancing the design of thermal management structures through rigorous numerical simulations is critical for improving engineering applicability. However, overcoming challenges related to the commercialization and practical utilization of these advanced structures remains a pressing need.

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Experimental investigation on passive cooling, thermal storage and thermoelectric harvest with heat pipe-assisted PCM-embedded metal foam

Cited by 32 publications

References 30 publications

Structural Study of the Thermoelectric Work Units Encapsulated with Cement Paste for Building Energy Harvesting

Structural Study of the Thermoelectric Work Units Encapsulated with Cement Paste for Building Energy Harvesting

Modern Thermal Energy Storage Systems Dedicated to Autonomous Buildings

Advanced Design and Manufacturing Approaches for Structures with Enhanced Thermal Management Performance: A Review

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