Thermoacoustic cooler to meet medical storage needs of rural communities in developing countries

Saechan, Patcharin; Jaworski, Artur J.

doi:10.1016/j.tsep.2018.05.001

Cited by 21 publications

(12 citation statements)

References 28 publications

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“…A cooling load of 2.5 W was produced with cold temperature of 5 °C and a temperature difference of 18 °C. Saechan [4] make use of the waste heat from cooking burner in his device. The maximum relative performance of 5.94 % was reached.…”

Section: The Drivermentioning

confidence: 99%

“…In recent years, there has been an increasing interest in 131 thermoacoustics its significant advantages over other refrigeration and engine systems. These advantages include the use of environment-friendly working fluids, the continuous control of cooling capacity, the design simplicity, the ability to use waste energy and the quiet operation possibility [3,4]. It is now in the research and development stage, and it is predicted for observable spreading commercially [5].…”

Section: Introduction 11 Backgroundmentioning

confidence: 99%

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Thermoacoustic Energy Conversion Devices: Novel Insights

Alamir

2020

ARFMTS

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Thermoacoustic engines and refrigerators have many advantages. They use environment-friendly working gases, their design is simple, and they can operate quietly. However, they have many design characteristics from geometric parameters and operating conditions. Besides this, they still have low efficiencies and performance. This paper summarises important considerations of the design and presents the state-of-the-art developments in thermoacoustic energy conversion devices. This includes recent studies and designs of the thermoacoustic refrigeration devices towards more efficient thermoacoustic engines and refrigerators. New insights into the design of resonators, the different sources of the power sources, the different stack geometries and working mediums were considered. The challenges that face the development of thermoacoustic devices were also discussed. Far too little attention has been paid to looking at these devices comprehensively. In further research, the use of neural networks and metadata as optimisation methods could be a means of significantly increasing the performance of these devices. There is also abundant room for further progress in enhancing oscillatory heat transfer. Moreover, further recommendations and studies were proposed for a better understanding of the interrelationship between the geometric parameters and operating conditions.

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Section: The Drivermentioning

confidence: 99%

Section: Introduction 11 Backgroundmentioning

confidence: 99%

Thermoacoustic Energy Conversion Devices: Novel Insights

Alamir

2020

ARFMTS

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“…where and is thermal conductivity and the average density of the gas, is the isobaric specific heat, and is the thermal diffusivity of the gas (Saechan, 2014). Viscous penetration depth can be explained as the thickness of the working fluid layer around the stack whose movement is influenced by the viscous force (Murti, 2015).…”

Section: Theorymentioning

confidence: 99%

“…where and are respectively the dynamic and kinetic viscosities of the working fluid (Saechan, 2014). The material selection of the stack should also consider the Lautrec number ( ), which is ratio of the effective hydraulic radius to the thermal penetration depth on the stack ( = ⁄ ).…”

Section: Theorymentioning

confidence: 99%

Experimental study on the effect of hydraulic radius of stack on the performance of thermoacoustic prime mover with open resonator

Adhitama

Cahyadi

Setiawan

et al. 2018

J. Phys.: Theor. Appl.

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<p class="Abstract">Thermoacoustic prime mover is a device which converts thermal energy into acoustic work. The device mainly consists of a resonator pipe, a stack (a porous medium), and two heat exchangers. Four stacks were made of a pile of stainless wire-mesh screens with various mesh numbers of #12, #14, #16, and #18, providing the effective hydraulic radius of 0.32 mm, 0.28 mm, 0.25 mm, 0.23 mm, respectively. Each stack has 4 cm length. By using the wire-mesh screens, it is easier to vary the hydraulic radius of stack than any other material. The stack is sandwiched between a hot heat exchanger and an ambient heat exchanger. The resonator is made of a stainless-steel pipe with one end open and the other closed. The stack and heat exchangers are placed inside a resonator pipe near the closed end. The thermal energy were provided by using an electric heater which is installed at the hot heat exchanger. Ambient water was flowing through the ambient heat exchanger. Sound is produced by the stack when the temperature difference between the both ends of stack reachs an onset point. This experiments were performed by recording the temperatures at both ends of stack and the pressure amplitudes of the sound at several points along the resonator for various hydraulic radius of stack. It is found that the effective hydraulic radius of 0.28 mm gives the lowest onset temperature, the shortest time to reach onset condition, and the highest pressure amplitude which are 314°C, 299 s, and 2.89 kPa, respectively. The frequency of sound is not altered by the change of hydraulic radius of stack.</p>

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“…Energy conversion based on thermoacoustic effects promises novel sustainable heat-driven technologies that can be applied to heating [7], cooling [8][9][10], and power generation [11][12][13]. A thermoacoustically-driven cooler (TADC) works by converting thermal energy into acoustic power necessary to pump heat from lower to higher temperatures, offering a promising solution to the above-mentioned problem.…”

Section: Introductionmentioning

confidence: 99%

A cascade-looped thermoacoustic driven cryocooler with different-diameter resonance tubes. Part Ⅱ: Experimental study and comparison

Sun

et al. 2020

Energy

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Thermoacoustic cooler to meet medical storage needs of rural communities in developing countries

Cited by 21 publications

References 28 publications

Thermoacoustic Energy Conversion Devices: Novel Insights

Thermoacoustic Energy Conversion Devices: Novel Insights

Experimental study on the effect of hydraulic radius of stack on the performance of thermoacoustic prime mover with open resonator

A cascade-looped thermoacoustic driven cryocooler with different-diameter resonance tubes. Part Ⅱ: Experimental study and comparison

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