Performance comparison of two metallic eutectic solder based medium-temperature domestic thermal energy storage systems

Mawire, Ashmore; Ekwomadu, Chidiebere S.; Lefenya, Tlotlo M.; Shobo, Adedamola

doi:10.1016/j.energy.2019.116828

Cited by 14 publications

(6 citation statements)

References 49 publications

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“…82 The same effect can be seen in other metal alloys: Sn 91 Zn 9 ; T m = 199 °C, ΔH f = 35 J g −1 ; Sn 56 Bi 2 Al 2 Zn; T m = 145 °C, ΔH f = 47 J g −1 . 60,62,64,82,83 While alloy formation will seldom overcome the problem of cost of the pure metals, both metals and metal alloys have many advantageous properties, including high purity, high thermal conductivity, low vapor pressure, low volume change during phase transitions, and high thermal stability. Additionally, due to their high density, they have large volumetric energy storage capacity.…”

Section: Metals and Metal Alloysmentioning

confidence: 99%

Phase Change Materials for Renewable Energy Storage at Intermediate Temperatures

et al. 2022

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Thermal energy storage technologies utilizing phase change materials (PCMs) that melt in the intermediate temperature range, between 100 and 220 °C, have the potential to mitigate the intermittency issues of wind and solar energy. This technology can take thermal or electrical energy from renewable sources and store it in the form of heat. This is of particular utility when the end use of the energy is also as heat. For this purpose, the material should have a phase change between 100 and 220 °C with a high latent heat of fusion. Although a range of PCMs are known for this temperature range, many of these materials are not practically viable for stability and safety reasons, a perspective not often clear in the primary literature. This review examines the recent development of thermal energy storage materials for application with renewables, the different material classes, their physicochemical properties, and the chemical structural origins of their advantageous thermal properties. Perspectives on further research directions needed to reach the goal of large scale, highly efficient, inexpensive, and reliable intermediate temperature thermal energy storage technologies are also presented. CONTENTS References R

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Section: Metals and Metal Alloysmentioning

confidence: 99%

Phase Change Materials for Renewable Energy Storage at Intermediate Temperatures

et al. 2022

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“…Despite this, there are some recent publications of Lead-free Bi-based alloys as MPCMs for thermal management electronic applications [154][155][156][157], a passive thermal management system [158], thermal energy storage and heat sinks [159], and domestic cooking applications [34,160,161]. Moreover, there are research works to enhance the relatively low thermal conductivity of the alloys (see Fig.…”

Section: Alloys Containing Lead and Cadmiummentioning

confidence: 99%

A review of metallic materials for latent heat thermal energy storage: Thermophysical properties, applications, and challenges

Costa

Kenisarin

2022

Renewable and Sustainable Energy Reviews

106

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“…where 𝜌 is the average density of sunflower oil circulating through the receiver, 𝑐 is the average specific heat capacity, 𝑉 is the average flow rate of sunflower oil, 𝑇 is the outlet temperature of sunflower oil exiting the receiver, and 𝑇 is the inlet temperature of sunflower oil entering the receiver. The average density and specific heat capacity of sunflower oil are temperature dependent, and vary with temperature (T) as [34,35]:…”

Section: Energy Analysismentioning

confidence: 99%

“…The discharging energy efficiency of the storage tank can be defined as the ratio of the total energy discharged from the storage tank to the total energy stored during charging, and it is expressed as [34]:…”

Section: Energy Analysismentioning

confidence: 99%

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Experimental Energetic and Exergetic Performance of a Combined Solar Cooking and Thermal Energy Storage System

2022

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Most solar cookers usually perform a single task of solely cooking food during sunshine hours. Solar cookers coupled with thermal energy storage (TES) material for off-sunshine cooking are usually expensive and require complex engineering designs, and cannot be used for dual purposes, for example, solar water heating and cooking. In this paper, a solar cooker that can perform dual tasks of cooking as well as storing thermal energy to be used during off-sunshine periods is presented. The experimental setup is composed of a parabolic dish, a solar receiver coupled with a flat plate and an oil-circulating copper coil for charging and discharging a storage tank. The objective of the experiment is to evaluate the energy and exergy thermal performance parameters of the dual-purpose system during charging and discharging cycles. The effect of the flow rate and the mass of the load are investigated while using sunflower oil as both the heat transfer fluid and the storage material. Charging and discharging experiments are conducted using four different flow rates (2, 3, 4, 5 mL/s), and with different masses (0.5, 1, 1.5, 2.0 kg) with water and sunflower oil as the test loads. The charging results show that the average energy and exergy rates as well as their corresponding efficiencies increase with an increase in the charging flow rate. On the other hand, the increase in the mass load tends to decrease marginally the average charging energy and exergy rates for water, and their corresponding efficiencies. For sunflower oil, the average charging energy and exergy rates and efficiencies showed a more pronounced decrease with an increase in the mass. Water generally shows higher charging and discharging energy and exergy efficiencies compared to sunflower oil with an increase in the flow rate. For discharging results, the correlations between the energy and exergy thermal performance parameters with respect to the flow rate and the heating load are not well defined possibly due to different initial storage tank temperatures at the onset of discharging and the inefficient discharging process which needs to be optimized in future.

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Performance comparison of two metallic eutectic solder based medium-temperature domestic thermal energy storage systems

Cited by 14 publications

References 49 publications

Phase Change Materials for Renewable Energy Storage at Intermediate Temperatures

Phase Change Materials for Renewable Energy Storage at Intermediate Temperatures

A review of metallic materials for latent heat thermal energy storage: Thermophysical properties, applications, and challenges

Experimental Energetic and Exergetic Performance of a Combined Solar Cooking and Thermal Energy Storage System

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