Geometric optimization of micro-thermoacoustic cooler for heat management in electronics
- Tartibu, K., Sun, B., Kaunda, M.A.E.
- Authors: Tartibu, K. , Sun, B. , Kaunda, M.A.E.
- Date: 2013
- Subjects: Micro-thermoacoustic cooler , Heat management , Geometric optimization
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/17493 , uj:15890 , ISBN: 978-1-4673-4569-9 , Citation: Tartibu, L.K., Sun, B. & Kaunda M.A.E. 2013. Geometric optimisation of micro-thermoacoustic cooler for heat management in electronics. IEEE International Conference on Industrial Technology (ICIT), 2013, Cape Town, South Africa, 527 – 532.
- Description: Abstract: As a result of miniaturisation, electronic products are shrinking in size and weight but with greater pressure for cost reduction. Heat fluxes have increased considerably and hence thermal management becomes crucial from the reliability point of view. Thermoacoustic heat engines provide a practical solution to the problem of heat management in microcircuits where they can be used to pump heat or produce spot cooling of specific circuit elements. However, the most inhibiting characteristic of thermoacoustic cooling is its current lack of efficiency. A multiobjective optimization approach is presented to model and optimize a small-scale thermoacoustic regenerator. Optimization of multiple objectives components is considered and global optimal solutions have been identified using the epsilon constraint method.
- Full Text:
- Authors: Tartibu, K. , Sun, B. , Kaunda, M.A.E.
- Date: 2013
- Subjects: Micro-thermoacoustic cooler , Heat management , Geometric optimization
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/17493 , uj:15890 , ISBN: 978-1-4673-4569-9 , Citation: Tartibu, L.K., Sun, B. & Kaunda M.A.E. 2013. Geometric optimisation of micro-thermoacoustic cooler for heat management in electronics. IEEE International Conference on Industrial Technology (ICIT), 2013, Cape Town, South Africa, 527 – 532.
- Description: Abstract: As a result of miniaturisation, electronic products are shrinking in size and weight but with greater pressure for cost reduction. Heat fluxes have increased considerably and hence thermal management becomes crucial from the reliability point of view. Thermoacoustic heat engines provide a practical solution to the problem of heat management in microcircuits where they can be used to pump heat or produce spot cooling of specific circuit elements. However, the most inhibiting characteristic of thermoacoustic cooling is its current lack of efficiency. A multiobjective optimization approach is presented to model and optimize a small-scale thermoacoustic regenerator. Optimization of multiple objectives components is considered and global optimal solutions have been identified using the epsilon constraint method.
- Full Text:
Multiobjective optimization of a thermoacoustic regenerator
- Tartibu, K., Sun, B., Kaunda, M.A.E.
- Authors: Tartibu, K. , Sun, B. , Kaunda, M.A.E.
- Date: 2012
- Subjects: Thermoacoustics , Multiobjective optimization , GAMS , Mathematical programming
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/17923 , uj:15940 , Citation: Tartibu, L.K., Sun, B. & Kaunda M.A.E. 2012. Multi-objective optimization of a thermoacoustic regenerator. ASSAF Third Annual South African Young Scientists’ Conference, 16-18 October, 2012, Pretoria, South Africa.
- Description: Abstract: This paper presents a new mathematical approach for optimizing the geometry of a thermoacoustic regenerator, aimed at producing efficient thermoacoustic engines. Optimal set of parameters describing the device are computed for a chosen thermoacoustic couple to illustrate this approach. Hence, a non-linear multiobjective problem is formulated in GAMS and solved using Lindoglobal solver. Lexicographic optimization is presented as an alternative optimization technique to the common used weighting methods. This approach establishes a hierarchical order among all the optimization objectives instead of giving them a specific (and most of the time, arbitrary) weight. In this work, the optimization criteria are chosen as work output, viscous resistance as well as thermal losses that are typically disregarded when modeling the device. A practical example is given, in a hypothetical scenario, showing how the proposed optimization technique may help thermoacoustic regenerator designers to identify Pareto optimal solutions when dealing with geometric parameters.
- Full Text:
- Authors: Tartibu, K. , Sun, B. , Kaunda, M.A.E.
- Date: 2012
- Subjects: Thermoacoustics , Multiobjective optimization , GAMS , Mathematical programming
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/17923 , uj:15940 , Citation: Tartibu, L.K., Sun, B. & Kaunda M.A.E. 2012. Multi-objective optimization of a thermoacoustic regenerator. ASSAF Third Annual South African Young Scientists’ Conference, 16-18 October, 2012, Pretoria, South Africa.
- Description: Abstract: This paper presents a new mathematical approach for optimizing the geometry of a thermoacoustic regenerator, aimed at producing efficient thermoacoustic engines. Optimal set of parameters describing the device are computed for a chosen thermoacoustic couple to illustrate this approach. Hence, a non-linear multiobjective problem is formulated in GAMS and solved using Lindoglobal solver. Lexicographic optimization is presented as an alternative optimization technique to the common used weighting methods. This approach establishes a hierarchical order among all the optimization objectives instead of giving them a specific (and most of the time, arbitrary) weight. In this work, the optimization criteria are chosen as work output, viscous resistance as well as thermal losses that are typically disregarded when modeling the device. A practical example is given, in a hypothetical scenario, showing how the proposed optimization technique may help thermoacoustic regenerator designers to identify Pareto optimal solutions when dealing with geometric parameters.
- Full Text:
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