Design and construction of a thermoacoustically driven thermoacoustic refrigerator
- Alcock, A.C., Tartibu, L.K., Jen, T.C.
- Authors: Alcock, A.C. , Tartibu, L.K. , Jen, T.C.
- Date: 2017
- Subjects: Design , Thermoacoustic refrigeration , TADTAR
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/250780 , uj:26139 , Citation: Alcock, A.C., Tartibu, L.K. & Jen, T.C. 2017. Design and construction of a thermoacoustically driven thermoacoustic refrigerator.
- Description: Abstract: This work describes the design and construction of a standing wave Thermoacoustically Driven Thermoacoustic Refrigerator (TADTAR). The thermoacoustic cooler is proposed in this study as an alternative sustainable solution to current issues with vapor compression refrigerators, due to its environmentally friendlier attributes and its solar energy driven capabilities. However, one of the main hindrances to the expansion of this technology is its current lack of efficiency and performance closely related to the designing of the device. Hence, a model has been designed and constructed to perform an experimental investigation of the device’s performance at the University of Johannesburg. This model will mainly be used to investigate the dynamics of the TADTAR arrangement. The TADTAR consists of two thermoacoustic systems namely a thermoacoustic engine coupled to a thermoacoustic refrigerator. The thermoacoustic engine consists of a heat source and a cordierite honeycomb stack which converts heat into acoustic energy. The heat pumping takes place within a thermoacoustic refrigerator. Guidance on the material selection, constraints and calculation of the geometrical configuration describing the device constitute the main contribution of this work
- Full Text:
- Authors: Alcock, A.C. , Tartibu, L.K. , Jen, T.C.
- Date: 2017
- Subjects: Design , Thermoacoustic refrigeration , TADTAR
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/250780 , uj:26139 , Citation: Alcock, A.C., Tartibu, L.K. & Jen, T.C. 2017. Design and construction of a thermoacoustically driven thermoacoustic refrigerator.
- Description: Abstract: This work describes the design and construction of a standing wave Thermoacoustically Driven Thermoacoustic Refrigerator (TADTAR). The thermoacoustic cooler is proposed in this study as an alternative sustainable solution to current issues with vapor compression refrigerators, due to its environmentally friendlier attributes and its solar energy driven capabilities. However, one of the main hindrances to the expansion of this technology is its current lack of efficiency and performance closely related to the designing of the device. Hence, a model has been designed and constructed to perform an experimental investigation of the device’s performance at the University of Johannesburg. This model will mainly be used to investigate the dynamics of the TADTAR arrangement. The TADTAR consists of two thermoacoustic systems namely a thermoacoustic engine coupled to a thermoacoustic refrigerator. The thermoacoustic engine consists of a heat source and a cordierite honeycomb stack which converts heat into acoustic energy. The heat pumping takes place within a thermoacoustic refrigerator. Guidance on the material selection, constraints and calculation of the geometrical configuration describing the device constitute the main contribution of this work
- Full Text:
Performance alteration of standing-wave thermoacoustically-driven engine through resonator length adjustment
- Balonji, S., Alcock, A.C., Tartibu, L.K., Jen, T.C
- Authors: Balonji, S. , Alcock, A.C. , Tartibu, L.K. , Jen, T.C
- Date: 2019
- Subjects: Thermo-acoustic , Sound-wave , DELTAEC
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/401878 , uj:33607 , Citation: Balonji, S. et al. 2019. Performance alteration of standing-wave thermoacoustically-driven engine through resonator length adjustment.
- Description: Abstract: The production of sound-wave in thermo-acoustic device is necessary to induce cooling or generate electricity. The magnitude of the sound-wave is normally proportional to the amount of heat provided to the device. The possibility to use waste heat in any locations can be enough to justify the use of thermo-acoustic technology for sustainable electricity generation or refrigeration. In this work, an adjustable thermoacoustically-driven engine has been developed using the Design Environment for Low-amplitude ThermoAcoustic Energy Conversion (DELTAEC). Many studies have highlighted the relationship between the geometry of the stack and the performance of the device. Unlike previous studies, the resonator of this thermoacoustically-driven device, made of two portions, was adjusted. The performance of the device has been analysed in order to evaluate the influence of the alteration of the resonator on the heat-to-sound conversion. Performance indicators like the acoustic power, the temperature difference across the stack and the frequency of the sound-wave have been studied. This work point out the possibility to regulate the performance of thermo-acoustic engine by adjusting the geometry of the resonator.
- Full Text:
- Authors: Balonji, S. , Alcock, A.C. , Tartibu, L.K. , Jen, T.C
- Date: 2019
- Subjects: Thermo-acoustic , Sound-wave , DELTAEC
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/401878 , uj:33607 , Citation: Balonji, S. et al. 2019. Performance alteration of standing-wave thermoacoustically-driven engine through resonator length adjustment.
- Description: Abstract: The production of sound-wave in thermo-acoustic device is necessary to induce cooling or generate electricity. The magnitude of the sound-wave is normally proportional to the amount of heat provided to the device. The possibility to use waste heat in any locations can be enough to justify the use of thermo-acoustic technology for sustainable electricity generation or refrigeration. In this work, an adjustable thermoacoustically-driven engine has been developed using the Design Environment for Low-amplitude ThermoAcoustic Energy Conversion (DELTAEC). Many studies have highlighted the relationship between the geometry of the stack and the performance of the device. Unlike previous studies, the resonator of this thermoacoustically-driven device, made of two portions, was adjusted. The performance of the device has been analysed in order to evaluate the influence of the alteration of the resonator on the heat-to-sound conversion. Performance indicators like the acoustic power, the temperature difference across the stack and the frequency of the sound-wave have been studied. This work point out the possibility to regulate the performance of thermo-acoustic engine by adjusting the geometry of the resonator.
- Full Text:
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