Development of a low thermal resistance water jet cooled heat sink for thermoelectric refrigerators

Karwa, Nitin; Stanley, Cameron; Intwala, Hiral; Rosengarten, Gary

doi:10.1016/j.applthermaleng.2016.06.118

Cited by 39 publications

(12 citation statements)

References 23 publications

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“…Conduction and radiation effects were neglected.MODEL VALIDATIONPresent model has been validated against the pressure drop readings over a range of Re (Reynolds number) from 847 to 4246 for nozzle of d = 1 mm. It can be observed inFigure 4that present computational model has the same trend of readings as observed in similar heat sink model proposed by Karwa et al[13]. The present work experienced lower pressure drop (7.6%) and some variation in trend as compared to Karwa et al[13] due to introduction of fillet of radius 0.2 mm at the inlet of nozzle.…”

supporting

confidence: 85%

“…It can be observed inFigure 4that present computational model has the same trend of readings as observed in similar heat sink model proposed by Karwa et al[13]. The present work experienced lower pressure drop (7.6%) and some variation in trend as compared to Karwa et al[13] due to introduction of fillet of radius 0.2 mm at the inlet of nozzle. The boundary conditions and nozzle size in both simulations are selected same.…”

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confidence: 85%

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Thermohydraulic Effect of Nozzle Size and Introduction of Dimpled Surfaces in Heat Sink for Thermoelectric Refrigerator

al.¹

2017

IJMPERD

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The computational study of water jet cooled hot side heat sink for thermoelectric refrigerator has been analyzed to study the effects of change in nozzle length (l) and diameter (d) on various parameters like the convective heat transfer coefficient, thermoelectric resistance, pressure drop and Nusselt number. It was observed from the analysis that nozzle configuration of l=3 mm and d=1 mm gave maximum value of the heat transfer coefficients as compared to other nozzle geometries considered at various flow rates. Computational studies have been done to analyzed the heat sink performance by introducing dimple surfaces of three different diameters of 1mm, 2mm and 3mm at the inlet port of 8 mm. Results were further more analyzed for nozzle configuration of l=3 mm, d=1mm with respect to the temperature differences of target surface and exiting fluid, for various flow rates from 1-5 litres per minute. Results showed that heat sink model with dimpled surfaces of diameter 3 mm gives maximum Nusselt number and convective heat transfer coefficient; high Pressure drop at lesser thermal resistance.

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supporting

confidence: 85%

supporting

confidence: 85%

Thermohydraulic Effect of Nozzle Size and Introduction of Dimpled Surfaces in Heat Sink for Thermoelectric Refrigerator

al.¹

2017

IJMPERD

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“…The manufacturing is realized by the customized layer-by-layer manufacturing process where some special methods are used to reduce the contact thermal resistance. Karwa et al [170] designed an on-line restriction injection array heat sink in which the coolant was directly impinging on the thermoelectric module to reduce the thermal resistance of the interface. The experimental and simulation results show that a low thermal resistance 0.025 K/W can be obtained.…”

Section: Extrinsic Factors: Contact Resistancementioning

confidence: 99%

A Comprehensive Review of Strategies and Approaches for Enhancing the Performance of Thermoelectric Module

Song

Qian

et al. 2020

Energies

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In recent years, thermoelectric (TE) technology has been emerging as a promising alternative and environmentally friendly technology for power generators or cooling devices due to the increasingly serious energy shortage and environmental pollution problems. However, although TE technology has been found for a long time and applied in many professional fields, its low energy conversion efficiency and high cost also hinder its wide application. Thus, it is still urgent to improve the thermoelectric modules. This work comprehensively reviews the status of strategies and approaches for enhancing the performance of thermoelectrics, including material development, structure and geometry improvement, the optimization of a thermal management system, and the thermal structure design. In particular, the influence of contact thermal resistance and the improved optimization methods are discussed. This work covers many fields related to the enhancement of thermoelectrics. It is found that the main challenge of TE technology remains the improvement of materials’ properties, the decrease in costs and commercialization. Therefore, a lot of research needs to be carried out to overcome this challenge and further improve the performance of TE modules. Finally, the future research direction of TE technology is discussed. These discussions provide some practical guidance for the improvement of thermoelectric performance and the promotion of thermoelectric applications.

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“…Irshad et al experimentally and numerically investigated a novel thermoelectric air duct system assisted with a photovoltaic system for space cooling in Malaysian weather conditions. Joshi et al and Karwa et al developed a thermoelectric fresh water generator by using thermoelectric cooling module and thermoelectric refrigerator. Liu et al and Sun et al designed the optimal heat exchanger configuration for a heat pipe with an integrated thermoelectric cooling module for cooling of electronic devices.…”

Section: Introductionmentioning

confidence: 99%

Development of cold‐hot water dispenser with thermoelectric module systems

Hommalee

Wiriyasart

Naphon

2019

Heat Trans. Asian Res.

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In the present study, the results of a cold-hot water dispenser with a thermoelectric module system (TMS) are presented. The cold-hot water dispenser with thermoelectric module system consists of a cold water loop, a hot water loop, a coolant loop, and a thermoelectric module. The thermoelectric cooling and heating modules consist of four and two water blocks, nine and three thermoelectric plates, respectively. The cooling and heating capacities obtained from the cold-hot water dispenser with TMS are compared with those from a conventional cold-hot water dispenser with a compression refrigeration system (CRS). As compared with the conventional cold-hot water dispenser with CRS, the cold-hot water dispenser with TMS can be operated at the minimum cold water temperature of 10 to 13°C and the maximum hot water temperature of 65°C. The obtained results are expected provide guidelines to design cold-hot water dispensers with TMS.

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Development of a low thermal resistance water jet cooled heat sink for thermoelectric refrigerators

Cited by 39 publications

References 23 publications

Thermohydraulic Effect of Nozzle Size and Introduction of Dimpled Surfaces in Heat Sink for Thermoelectric Refrigerator

Thermohydraulic Effect of Nozzle Size and Introduction of Dimpled Surfaces in Heat Sink for Thermoelectric Refrigerator

A Comprehensive Review of Strategies and Approaches for Enhancing the Performance of Thermoelectric Module

Development of cold‐hot water dispenser with thermoelectric module systems

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