An experimental study of a thermoelectric heat exchange module for domestic space heating

Wang, Cheng; Calderón, Carlos; Wang, YaoDong

doi:10.1016/j.enbuild.2017.03.050

Cited by 31 publications

(16 citation statements)

References 15 publications

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“…The number of nodes is an input value and it affects the interval of calculation time for numerical simulation. the stable analysis condition, the time interval (Δt) must be higher than the minimum time step in Equation (31). The minimum time interval purposes to avoid the denominator becoming zero in the equations from the finite difference method (FDM).…”

Section: Discretization Using the Finite Difference Methodsmentioning

confidence: 99%

“…The results indicated that a TEM can save the operation energy for heating by up to 64% compared with the electric heater. From the other thermoelectric heating system, it showed a COP of >2 when ∆T between the hot and cold sides was <20 • C [31]. Sun et al [32] proposed a radiant heating terminal based on a TEM and a flat heat pipe and evaluated its performance through an experimental study.…”

Section: Introductionmentioning

confidence: 99%

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Numerical and Experimental Study on the Performance of Thermoelectric Radiant Panel for Space Heating

Lim

Jeong

2020

Materials

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The purpose of this study is to investigate the suitable operation and performance of a thermoelectric radiant panel (TERP) in the heating operation. First, the hypothesis was suggested that the heating operation of TERP can operate without a heat source at the cold side according to theoretical considerations. To prove this hypothesis, the thermal behavior of the TERP was investigated during the heating operation using a numerical simulation based on the finite difference method. The results indicated that it is possible to heat the radiant panel using a thermoelectric module without fan operation via the Joule effect. A mockup model of the TERP was constructed, and the numerical model and hypothesis were validated in experiment 1. Moreover, experiment 2 was performed to evaluate the necessity of fan operation in the heating operation of TERP regarding energy consumption. The results revealed that the TERP without fan operation showed the higher coefficient of performance (COP) in the heating season. After determining the suitable heating operation of the TERP, prediction models for the heating capacity and power consumption of the TERP were developed using the response surface methodology. Both models exhibited good R2 values of >0.94 and were validated within 10% error bounds in experimental cases. These prediction models are expected to be utilized in whole-building simulation programs for estimating the energy consumption of TERPs in the heating mode.

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Section: Discretization Using the Finite Difference Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Study on the Performance of Thermoelectric Radiant Panel for Space Heating

Lim

Jeong

2020

Materials

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“…2 The TE module will generate a voltage difference when temperature difference exists across the module, thereby producing electricity in external circuit. 3 Note that commercial thermoelectric modules are widely applied to energy harvesting applications such as photovoltaic power generation system, [4][5][6] vehicle exhaust, [7][8][9][10][11] human body heat recovery, 12 residential heating system, [13][14][15] biomass stove and furnace, 16,17 wireless sensors, 18,19 and processing chips. 20,21 For large-scale applications, Zhang et al 5 evaluated the efficiency of hybrid systems with different photovoltaic (PV) cells including crystalline silicon PV, silicon thin-film PV, polymer PV, and copper indium gallium selenide PV.…”

Section: Introductionmentioning

confidence: 99%

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

Chu

Chen

Chan³

et al. 2019

Energy Storage

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This article presents an effective method for harvesting waste heat from a household cooktop. The energy‐harvesting module contains a thermoelectric (TE) module, heat pipe module, and phase change material (PCM). The effects of TE modules, cooling mediums (air, water, and paraffin), and heat sink configuration and arrangement on the overall performance of the energy harvesting module are examined experimentally. It is found that the cooling process on the cold side of TE plays an essential role on the output voltage and system performance. By adding an air‐cooled heat sink, both output voltage and temperature difference can be moderately improved. Yet using a water‐cooled heat sink can improve the output voltage by about four times higher. Furthermore, the output voltage can be further promoted by using more efficient thermoelectric module. It appears that fewer fins incorporated with the PCM container filled with paraffin shows the optimal energy harvesting performance. Additionally, the recharging time for the full, medium, and low flame operation is tested with 3, 4, and 15 minutes, respectively, and the maximum recharging power of 7.25 W can be achieved with the highest energy storage of 523 mAh after operating 30 minutes.

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“…They indicated that their proposed system consumed 55 to 64% less energy compared with a conventional electric air heater. Wang et al [12] suggested a thermoelectric heating system powered by PV and a micro wind turbine. Their system showed energy savings of 64% and CO 2 emission reductions of 4305.4 kg/year.…”

Section: Introductionmentioning

confidence: 99%

Empirical Analysis for the Heat Exchange Effectiveness of a Thermoelectric Liquid Cooling and Heating Unit

2018

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This study aims to estimate the performance of thermoelectric module (TEM) heat pump for simultaneous liquid cooling and heating and propose empirical models for predicting the heat exchange effectiveness. The experiments were conducted to investigate and collect the performance data of TEM heat pump where the working fluid was water. A total of 57 sets of experimental data were statistically analyzed to estimate the effects of each independent variable on the heat exchange effectiveness using analysis of variance (ANOVA). To develop the empirical model, the six design parameters were measured: the number of transfer units (NTU) of the heat exchangers (i.e., water blocks), the inlet water temperatures and temperatures of water blocks at the cold and hot sides of the TEM. As a result, two polynomial equations predicting heat exchange effectiveness at the cold and hot sides of the TEM heat pump were derived as a function of the six selected design parameters. Also, the proposed models and theoretical model of conventional condenser and evaporator for heat exchange effectiveness were compared with the additional measurement data to validate the reliability of the proposed models. Consequently, two conclusions have been made: (1) the possibility of using the TEM heat pump for simultaneous cooling and heating was examined with the maximum temperature difference of 30 • C between cold and hot side of TEM, and (2) it is revealed that TEM heat pump has difference with the conventional evaporator and condenser from the comparison results between the proposed models and theoretical model due to the heat conduction and Joule effect in TEM.

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An experimental study of a thermoelectric heat exchange module for domestic space heating

Cited by 31 publications

References 15 publications

Numerical and Experimental Study on the Performance of Thermoelectric Radiant Panel for Space Heating

Numerical and Experimental Study on the Performance of Thermoelectric Radiant Panel for Space Heating

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

Empirical Analysis for the Heat Exchange Effectiveness of a Thermoelectric Liquid Cooling and Heating Unit

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