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

Lim, Hansol; Jeong, Jae-Weon

doi:10.3390/ma13030550

Cited by 6 publications

(4 citation statements)

References 42 publications

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“…Therefore, the primary objective of this study was to develop a cooling performance prediction model for a hydraulic thermoelectric radiant cooling panel (hTERCP)-integrated free cooling system according to the desirable range of design factors. The simulations and experiments were conducted based on previous studies to derive the valid cooling performance of the hTERCP [26,27]. Based on the analyzed and measured data, the analysis of variance (ANOVA) method was used to develop an energy prediction model, which was verified by an additional experiment.…”

Section: Introductionmentioning

confidence: 99%

Cooling Performance Prediction for Hydraulic Thermoelectric Radiant Cooling Panels with Experimental Validation

et al. 2022

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Thermoelectric technology has been developed as a substitute for existing refrigerants in heating, ventilation, and air-conditioning system applications for building decarbonization. A hydraulic thermoelectric radiant cooling panel (hTERCP) operated based on the Peltier effect can alternate a conventional cooling system using a chiller with refrigerators. This study aimed to develop a cooling performance prediction model for a hTERCP-integrated free cooling system according to the desirable range of five design factors. A mockup model of the hTERCP was constructed and tested in an environmental chamber to verify the proposed simulation model. The simulation and the experimental analysis confirmed that the heat rejection performance of the thermoelectric module (TEM) significantly affects the cooling performance of the hTERCP. The cooling water temperature was the primary design factor for releasing heat from the hot side of the TEM and significantly influenced the cooling performance of the hTERCP. A parametric analysis of the five design factors was conducted to investigate a method for improving the coefficient of performance (COP) of the hTERCP. The cooling water temperature affected the COP by 38.6–45.7%, and the heat exchange area of the cooling surface greatly influenced the cooling performance by 41.4%. The cooling water flow rate, heat exchange effectiveness of the water block, and heat resistance of the hot side were confirmed to have relatively little influence as 9.7–10.2%, 11.9–24.8%, and 0.7–11.1%, respectively.

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Section: Introductionmentioning

confidence: 99%

Cooling Performance Prediction for Hydraulic Thermoelectric Radiant Cooling Panels with Experimental Validation

et al. 2022

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“…While electrical power requirements decrease with higher number of thermocouples per TEE and more TEE in the system, [26] finds that 20 TEEs are the optimal trade off between achievable cooling power and required elements for their system. Activated ceiling panels are the second concept that is investigated to make use of free convection heat transfer [14,16,27]. One advantage is the more homogeneous heat distribution.…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric building temperature control: a potential assessment

Hagenkamp

Blanke

Döring

2021

Int J Energy Environ Eng

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This study focuses on thermoelectric elements (TEE) as an alternative for room temperature control. TEE are semi-conductor devices that can provide heating and cooling via a heat pump effect without direct noise emissions and no refrigerant use. An efficiency evaluation of the optimal operating mode is carried out for different numbers of TEE, ambient temperatures, and heating loads. The influence of an additional heat recovery unit on system efficiency and an unevenly distributed heating demand are examined. The results show that TEE can provide heat at a coefficient of performance (COP) greater than one especially for small heating demands and high ambient temperatures. The efficiency increases with the number of elements in the system and is subject to economies of scale. The best COP exceeds six at optimal operating conditions. An additional heat recovery unit proves beneficial for low ambient temperatures and systems with few TEE. It makes COPs above one possible at ambient temperatures below 0 $$^\circ $$ ∘ C. The effect increases efficiency by maximal 0.81 (from 1.90 to 2.71) at ambient temperature 5 K below room temperature and heating demand $$\dot{Q}_h={100} W$$ Q ˙ h = 100 W but is subject to diseconomies of scale. Thermoelectric technology is a valuable option for electricity-based heat supply and can provide cooling and ventilation functions. A careful system design as well as an additional heat recovery unit significantly benefits the performance. This makes TEE superior to direct current heating systems and competitive to heat pumps for small scale applications with focus on avoiding noise and harmful refrigerants.

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“…In Ref. [23], the thermoelectric radiant ceiling panel was tested differing from panels investigated in this paper with the construction: the aluminum ceiling plate was connected with a thermoelectric module that heats it up using electricity. In the devices used in the present investigations, heat is provided to the wall by means of heat pipes heated up by the hot water from the bottom collector.…”

Section: Introductionmentioning

confidence: 99%

Controlling the Thermal Power of a Wall Heating Panel with Heat Pipes by Changing the Mass Flowrate and Temperature of Supplying Water—Experimental Investigations

Amanowicz

2020

Energies

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Renewable energy sources for the purpose of heating buildings cooperate perfectly with so-called low-temperature heating systems. Water loop surface heating systems had been thoroughly tested. In contrast, thermal performance of wall panels with heat pipes have not been fully recognized, yet. The determination of the thermal power as well as the control of panels thermal performance cannot be performed with the methods developed for water loop systems. In this paper, the novel heating panels with heat pipes were tested to analyze the possibility of controlling their performance by changing the mass flowrate of heating water and its temperature. Specific heating power of the investigated panels varies from 16.9 W/m2 to 93.8 W/m2 when supplying a water temperature ranging from 35 °C to 65 °C and mass flowrate from 10 g/s to 47.5 g/s. Investigations revealed that the thermal performance of the panels is more sensitive to the changes of temperature than to the changes of mass flowrate of supplying water, and thus, should be controlled by changing the supply water temperature at low mass flowrates to obtain a low energy usage of pumps (diminished pressure losses) and good quality of controlling.

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

Cited by 6 publications

References 42 publications

Cooling Performance Prediction for Hydraulic Thermoelectric Radiant Cooling Panels with Experimental Validation

Cooling Performance Prediction for Hydraulic Thermoelectric Radiant Cooling Panels with Experimental Validation

Thermoelectric building temperature control: a potential assessment

Controlling the Thermal Power of a Wall Heating Panel with Heat Pipes by Changing the Mass Flowrate and Temperature of Supplying Water—Experimental Investigations

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