Phase change material-integrated thermoelectric energy harvesting block as an independent power source for sensors in buildings

2014 ◽

Vol 986-987 ◽

pp. 1163-1168

Author(s):

Qi Zhang ◽

Amen Agbossou

Keyword(s):

Phase Change ◽

Phase Change Material ◽

Thermoelectric Generator ◽

Photovoltaic Cell ◽

Typical Application ◽

Wireless Receiver ◽

Thermoelectric Energy ◽

Thermoelectric Energy Harvesting ◽

Solar Thermoelectric Generator ◽

Change Material

This paper presents a typical application for a newly developed thermoelectric energy harvesting system. The proposed solar thermoelectric generator (TEG) operates with phase change material (PCM) day and night. An energy management system was connected with the TEG to increase the output voltage while the harvested power was used to drive a wireless transmitter. The wireless receiver controlled the switch of a water tap which functions as a smart cooler of a photovoltaic cell. This study demonstrates a way of using micro-energy to improve macro-energy production smartly.

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Passive generation from a novel thermoelectric energy harvesting system model integrated with phase change material

E3S Web of Conferences ◽

10.1051/e3sconf/201911103060 ◽

2019 ◽

Vol 111 ◽

pp. 03060

Author(s):

Yoo-Suk Byon ◽

Hansol Lim ◽

Yong-Kwon Kang ◽

Soo-Yeol Yoon ◽

Jae-Weon Jeong

Keyword(s):

Phase Change ◽

Temperature Profile ◽

Phase Change Material ◽

Temperature Difference ◽

Wall Temperature ◽

Waste Heat ◽

Thermoelectric Energy ◽

Temperature Method ◽

Thermoelectric Energy Harvesting ◽

Change Material

The purpose of this research is to evaluate the performance of a novel model that incorporates a thermoelectric generator (TEG) and phase change material (PCM). The proposed model passively generates electricity using waste heat that accumulates at exterior wall surfaces. The main generator is a TEG. To maintain the temperature difference between the two sides of the TEG, PCM is located at its cold side—thus converging the heat transferred into latent heat. The proposed passive generation system is formed into a TEG-PCM block. The block can be stacked to form a wall or inserted into any part of a building that faces the sun. The experiment setup is based on a constant temperature method. The wall temperature profile is set according to solar radiation, convection, and radiative heat transfer. To replicate daily wall temperatures during the experiment, a heat plate is used to match a wall temperature profile. Step control was used for the heating plate. The resulting data shows the average temperature difference between the hot and cold sides of the TEG to be 10-20°C. The peak generated electricity was 0.08 W for a single module.

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Analysis of Thermoelectric Energy Harvesting with Graphene Aerogel-Supported Form-Stable Phase Change Materials

Nanomaterials ◽

10.3390/nano11092192 ◽

2021 ◽

Vol 11 (9) ◽

pp. 2192 ◽

Cited By ~ 1

Author(s):

Chengbin Yu ◽

Young Seok Song

Keyword(s):

Energy Harvesting ◽

Phase Change ◽

Stable Phase ◽

Maximum Output ◽

Graphene Aerogel ◽

External Temperature ◽

Heating And Cooling ◽

Thermoelectric Power Generator ◽

Thermoelectric Energy ◽

Thermoelectric Energy Harvesting

Graphene aerogel-supported phase change material (PCM) composites sustain the initial solid state without any leakage problem when they are melted. The high portion of pure PCM in the composite can absorb or release a relatively large amount of heat during heating and cooling. In this study, these form-stable PCM composites were used to construct a thermoelectric power generator for collecting electrical energy under the external temperature change. The Seebeck effect and the temperature difference between the two sides of the thermal device were applied for thermoelectric energy harvesting. Two different PCM composites were used to collect the thermoelectric energy harvesting due to the different phase transition field in the heating and cooling processes. The graphene nano-platelet (GNP) filler was embedded to increase the thermal conductivities of PCM composites. Maximum output current was investigated by utilizing these two PCM composites with different GNP filler ratios. The thermoelectric energy harvesting efficiencies during heating and cooling were 62.26% and 39.96%, respectively. In addition, a finite element method (FEM) numerical analysis was conducted to model the output profiles.

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Experimental study on the energy harvesting of a cooktop via thermoelectric module assisted with phase change material

Energy Storage ◽

10.1002/est2.55 ◽

2019 ◽

Vol 1 (2) ◽

pp. e55

Author(s):

Wen‐Xiao Chu ◽

I‐Jing Chen ◽

Chin‐Tung Chan ◽

Jing‐Sian Wu ◽

Chi‐Chuan Wang

Keyword(s):

Experimental Study ◽

Energy Harvesting ◽

Phase Change ◽

Phase Change Material ◽

Thermoelectric Module ◽

Change Material

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Simultaneous solar-thermal energy harvesting and storage via shape stabilized salt hydrate phase change material

Chemical Engineering Journal ◽

10.1016/j.cej.2020.126624 ◽

2021 ◽

Vol 405 ◽

pp. 126624 ◽

Cited By ~ 2

Author(s):

Mohammad Mehrali ◽

Johan E. ten Elshof ◽

Mina Shahi ◽

Amirhoushang Mahmoudi

Keyword(s):

Energy Harvesting ◽

Phase Change ◽

Phase Change Material ◽

Thermal Energy ◽

Solar Thermal ◽

Solar Thermal Energy ◽

Salt Hydrate ◽

Hydrate Phase ◽

And Storage ◽

Change Material

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Phase Change Material and the Thermoelectric Effect for Solar Energy Harvesting and Storage

ASME/JSME 2011 8th Thermal Engineering Joint Conference ◽

10.1115/ajtec2011-44425 ◽

2011 ◽

Cited By ~ 2

Author(s):

Qi Zhang ◽

Amen Agbossou ◽

Zhihua Feng ◽

Anne-Cecile Grillet

Keyword(s):

Energy Harvesting ◽

Phase Change ◽

Phase Change Material ◽

Latent Heat ◽

Autonomous Systems ◽

Work Unit ◽

Latent Heat Storage ◽

Solar Energy Harvesting ◽

Heat Effects ◽

Change Material

A new method of harvesting solar and ambient energy is presented. The method is based on thermoelectric and latent heat effects and is put into practice in a prototype work unit composed of a thermoelectric generator (TEG) and phase change material (PCM). Numerical and experimental analyses of the work unit are developed. The numerical analysis deals with finite elements modeling on solar radiation, temperature variation and wind-speed effects. The results demonstrate the utility of sensible and latent heat storage in the phase change material and confirm the capacity to generate continuous voltage by day and by night. Subsequently, with an optimized thermodynamic design and with several work units linked together, the proposed energy harvesting system could be utilized as both sensor and actuator in low power applications in buildings. It could replace dry batteries for wireless applications, LED lighting and autonomous systems.

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