Performance analysis and optimum ammonia-water concentration of basic Kalina cycle
In analyzing the performance of the basic Kalina cycle with ammonia-water as the working fluid pair, it is necessary to determine the optimal ammonia concentration for maximum efficiency, which requires complex and time-consuming calculations. This study, therefore, investigates the behavior of oper...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
|
| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025009636 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849712250467647488 |
|---|---|
| author | Arthit Intakham Attakorn Asanakham Thoranis Deethayat Tanongkiat Kiatsiriroat |
| author_facet | Arthit Intakham Attakorn Asanakham Thoranis Deethayat Tanongkiat Kiatsiriroat |
| author_sort | Arthit Intakham |
| collection | DOAJ |
| description | In analyzing the performance of the basic Kalina cycle with ammonia-water as the working fluid pair, it is necessary to determine the optimal ammonia concentration for maximum efficiency, which requires complex and time-consuming calculations. This study, therefore, investigates the behavior of operating evaporating pressures and temperatures within the ranges of 1000–7000 kPa and 100–150 °C, respectively. It was found that when the evaporating pressure did not exceed 3000 kPa, there was an optimal ammonia concentration that maximized the cycle thermal efficiency at any given evaporating temperature. However, when the pressure exceeded 4000 kPa, no peak thermal efficiency was observed at any evaporating temperature, and thermal efficiency increased with both the evaporating temperature and ammonia concentration. The obtained data will be used to develop new correlations for determining the optimal ammonia concentration at low evaporating pressures and the cycle efficiency for high evaporating pressures at any given ammonia concentration. These equations provide a quick method for determining the appropriate ammonia concentration for specific operating conditions at low evaporating pressures and for assessing cycle efficiency at high evaporating pressures. The findings were consistent with existing literature and simulations using the enthalpy method. |
| format | Article |
| id | doaj-art-898ed82b474e4ecfa2c9c51a705c8fde |
| institution | DOAJ |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-898ed82b474e4ecfa2c9c51a705c8fde2025-08-20T03:14:20ZengElsevierResults in Engineering2590-12302025-06-012610488710.1016/j.rineng.2025.104887Performance analysis and optimum ammonia-water concentration of basic Kalina cycleArthit Intakham0Attakorn Asanakham1Thoranis Deethayat2Tanongkiat Kiatsiriroat3Energy Engineering Program, Faculty of Engineering and Graduate School, Chiang Mai University, 239 Huay Kaew Road, Muang District, Chiang Mai, 50200, ThailandThermal System Research Laboratory, Department of Mechanical Engineering, Faculty of Engineering, Chiang Mai University, 239 Huay Kaew Road, Muang District, Chiang Mai, 50200, Thailand; Research Group for Renewable Energy, Faculty of Engineering, Chiang Mai University, 239 Huay Kaew Road, Muang District, Chiang Mai, 50200, ThailandThermal System Research Laboratory, Department of Mechanical Engineering, Faculty of Engineering, Chiang Mai University, 239 Huay Kaew Road, Muang District, Chiang Mai, 50200, Thailand; Research Group for Renewable Energy, Faculty of Engineering, Chiang Mai University, 239 Huay Kaew Road, Muang District, Chiang Mai, 50200, ThailandThermal System Research Laboratory, Department of Mechanical Engineering, Faculty of Engineering, Chiang Mai University, 239 Huay Kaew Road, Muang District, Chiang Mai, 50200, Thailand; Research Group for Renewable Energy, Faculty of Engineering, Chiang Mai University, 239 Huay Kaew Road, Muang District, Chiang Mai, 50200, Thailand; Corresponding author.In analyzing the performance of the basic Kalina cycle with ammonia-water as the working fluid pair, it is necessary to determine the optimal ammonia concentration for maximum efficiency, which requires complex and time-consuming calculations. This study, therefore, investigates the behavior of operating evaporating pressures and temperatures within the ranges of 1000–7000 kPa and 100–150 °C, respectively. It was found that when the evaporating pressure did not exceed 3000 kPa, there was an optimal ammonia concentration that maximized the cycle thermal efficiency at any given evaporating temperature. However, when the pressure exceeded 4000 kPa, no peak thermal efficiency was observed at any evaporating temperature, and thermal efficiency increased with both the evaporating temperature and ammonia concentration. The obtained data will be used to develop new correlations for determining the optimal ammonia concentration at low evaporating pressures and the cycle efficiency for high evaporating pressures at any given ammonia concentration. These equations provide a quick method for determining the appropriate ammonia concentration for specific operating conditions at low evaporating pressures and for assessing cycle efficiency at high evaporating pressures. The findings were consistent with existing literature and simulations using the enthalpy method.http://www.sciencedirect.com/science/article/pii/S2590123025009636Kalina cyclePerformance analysisAmmonia-water concentrationOptimal mass fraction |
| spellingShingle | Arthit Intakham Attakorn Asanakham Thoranis Deethayat Tanongkiat Kiatsiriroat Performance analysis and optimum ammonia-water concentration of basic Kalina cycle Results in Engineering Kalina cycle Performance analysis Ammonia-water concentration Optimal mass fraction |
| title | Performance analysis and optimum ammonia-water concentration of basic Kalina cycle |
| title_full | Performance analysis and optimum ammonia-water concentration of basic Kalina cycle |
| title_fullStr | Performance analysis and optimum ammonia-water concentration of basic Kalina cycle |
| title_full_unstemmed | Performance analysis and optimum ammonia-water concentration of basic Kalina cycle |
| title_short | Performance analysis and optimum ammonia-water concentration of basic Kalina cycle |
| title_sort | performance analysis and optimum ammonia water concentration of basic kalina cycle |
| topic | Kalina cycle Performance analysis Ammonia-water concentration Optimal mass fraction |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025009636 |
| work_keys_str_mv | AT arthitintakham performanceanalysisandoptimumammoniawaterconcentrationofbasickalinacycle AT attakornasanakham performanceanalysisandoptimumammoniawaterconcentrationofbasickalinacycle AT thoranisdeethayat performanceanalysisandoptimumammoniawaterconcentrationofbasickalinacycle AT tanongkiatkiatsiriroat performanceanalysisandoptimumammoniawaterconcentrationofbasickalinacycle |