Studi Eksperimental dan Formulasi Unjuk Kerja Tangki Penyimpan Termal Stratifikasi Dengan Analisa Distribusi Temperatur
A Stratified Thermal Energy Storage (TES) Tank has been used widely related to cogeneration plant by utilizing waste heat energy from gas turbine. The TES tank is proven useful for energy shifting on cogeneration plant, by charging the TES tank at off-peak demand and discharging it during on-peak de...
| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Language: | English |
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2014
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| Online Access: | https://repository.ugm.ac.id/276229/1/Joko%20Waluyo_AES%202014.pdf |
| _version_ | 1797037061074583552 |
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| author | Waluyo, Joko Sugiyono, Sugiyono |
| author_facet | Waluyo, Joko Sugiyono, Sugiyono |
| author_sort | Waluyo, Joko |
| collection | UGM |
| description | A Stratified Thermal Energy Storage (TES) Tank has been used widely related to cogeneration plant by utilizing waste heat energy from gas turbine. The TES tank is proven useful for energy shifting on cogeneration plant, by charging the TES tank at off-peak demand and discharging it during on-peak demand. The other advantage of TES is reducing the rated capacity of the refrigerator as well as the heater on the cogeneration plant. However, determination of the TES tank performance has not been mathematically formulated. The available procedure that has been carried out by estimation using captured temperature distribution profile shows in-accurate result. This research is conducted by experimental investigation on the stratified tank for storing warm wateron variation of diffuser type. The research has two main targets namely formulation of performance parameters and characterization of the thermal storage tank operation. Formulation is developed based on non-linear regression on the temperature distribution profiles. The method is then used to establish formulation on the important parameters on the TES tank. The formulation is then expanded for characterization of thermal storage tank under various diffuser type. Results yielded that water temperature distribution in the stratified tank can be represented by Sigmoid Dose Response (SDR) equation. The SDR equation relates the temperature distribution consist of four parameters namely average temperature of cool water, average temperature of warm water, midpoint of thermocline and slope gradient of thermocline as a function of water elevation. Further, SDR function can be explored for mathematical formulations of important parameters of the stratified TES tank, namely thermocline thickness, cumulative cooling capacity (Qcum) as well as Half-cycle Figure of Merit (FoM1/2). On the characterization ofthe TES tank, it is shown that variation of diffuser type effect the slope gradient of thermocline. This is related to the thermocline thickness that affecting cumulative cooling capacity (Qcum) as well as half-cycle Figure of Merit (FoM1/2) in the TES tank. The new formulation are very useful to be implemented for operation and design evaluation of stratified TES tank.
Keywords: Parameter formulation, stratified thermal storage tank, temperature distribution, Sigmoid Dose
Response |
| first_indexed | 2024-03-13T23:57:09Z |
| format | Conference or Workshop Item |
| id | oai:generic.eprints.org:276229 |
| institution | Universiti Gadjah Mada |
| language | English |
| last_indexed | 2024-03-13T23:57:09Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | oai:generic.eprints.org:2762292020-09-22T03:33:26Z https://repository.ugm.ac.id/276229/ Studi Eksperimental dan Formulasi Unjuk Kerja Tangki Penyimpan Termal Stratifikasi Dengan Analisa Distribusi Temperatur Waluyo, Joko Sugiyono, Sugiyono Mechanical Engineering A Stratified Thermal Energy Storage (TES) Tank has been used widely related to cogeneration plant by utilizing waste heat energy from gas turbine. The TES tank is proven useful for energy shifting on cogeneration plant, by charging the TES tank at off-peak demand and discharging it during on-peak demand. The other advantage of TES is reducing the rated capacity of the refrigerator as well as the heater on the cogeneration plant. However, determination of the TES tank performance has not been mathematically formulated. The available procedure that has been carried out by estimation using captured temperature distribution profile shows in-accurate result. This research is conducted by experimental investigation on the stratified tank for storing warm wateron variation of diffuser type. The research has two main targets namely formulation of performance parameters and characterization of the thermal storage tank operation. Formulation is developed based on non-linear regression on the temperature distribution profiles. The method is then used to establish formulation on the important parameters on the TES tank. The formulation is then expanded for characterization of thermal storage tank under various diffuser type. Results yielded that water temperature distribution in the stratified tank can be represented by Sigmoid Dose Response (SDR) equation. The SDR equation relates the temperature distribution consist of four parameters namely average temperature of cool water, average temperature of warm water, midpoint of thermocline and slope gradient of thermocline as a function of water elevation. Further, SDR function can be explored for mathematical formulations of important parameters of the stratified TES tank, namely thermocline thickness, cumulative cooling capacity (Qcum) as well as Half-cycle Figure of Merit (FoM1/2). On the characterization ofthe TES tank, it is shown that variation of diffuser type effect the slope gradient of thermocline. This is related to the thermocline thickness that affecting cumulative cooling capacity (Qcum) as well as half-cycle Figure of Merit (FoM1/2) in the TES tank. The new formulation are very useful to be implemented for operation and design evaluation of stratified TES tank. Keywords: Parameter formulation, stratified thermal storage tank, temperature distribution, Sigmoid Dose Response 2014 Conference or Workshop Item NonPeerReviewed application/pdf en https://repository.ugm.ac.id/276229/1/Joko%20Waluyo_AES%202014.pdf Waluyo, Joko and Sugiyono, Sugiyono (2014) Studi Eksperimental dan Formulasi Unjuk Kerja Tangki Penyimpan Termal Stratifikasi Dengan Analisa Distribusi Temperatur. In: Annual Engineering Seminar 2014 ISBN 978-602-98726-3-7, 12 February 2014, Yogyakarta. |
| spellingShingle | Mechanical Engineering Waluyo, Joko Sugiyono, Sugiyono Studi Eksperimental dan Formulasi Unjuk Kerja Tangki Penyimpan Termal Stratifikasi Dengan Analisa Distribusi Temperatur |
| title | Studi Eksperimental dan Formulasi Unjuk Kerja Tangki Penyimpan Termal Stratifikasi Dengan Analisa Distribusi Temperatur |
| title_full | Studi Eksperimental dan Formulasi Unjuk Kerja Tangki Penyimpan Termal Stratifikasi Dengan Analisa Distribusi Temperatur |
| title_fullStr | Studi Eksperimental dan Formulasi Unjuk Kerja Tangki Penyimpan Termal Stratifikasi Dengan Analisa Distribusi Temperatur |
| title_full_unstemmed | Studi Eksperimental dan Formulasi Unjuk Kerja Tangki Penyimpan Termal Stratifikasi Dengan Analisa Distribusi Temperatur |
| title_short | Studi Eksperimental dan Formulasi Unjuk Kerja Tangki Penyimpan Termal Stratifikasi Dengan Analisa Distribusi Temperatur |
| title_sort | studi eksperimental dan formulasi unjuk kerja tangki penyimpan termal stratifikasi dengan analisa distribusi temperatur |
| topic | Mechanical Engineering |
| url | https://repository.ugm.ac.id/276229/1/Joko%20Waluyo_AES%202014.pdf |
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