تأثير تشغيل المراجل البخارية عند الحمولات الجزئية على المردود و التآكل
Abstract
يهدف هذا البحث إلى دراسة تقليل تآكل مسخنات الهواء في المراجل البخارية التي تعمل عند الحمولات الجزئية, وزيادة مردودها, من أجل ذلك تمت دراسة عمل مرجلين: يحوي الأول ثلاثة مسخنات لهواء الاحتراق, بينما يحوي الثاني مسخنين. أظهرت النتائج تآكلاً فعالاً في مسخنات هواء المرجل الأول بينما كان مردوده أعلى من مردود المرجل الآخر, الذي كان تآكل مسخنات الهواء فيه أقل.كما أظهر هذا البحث أن المحافظة على درجة حرارة لغازات العادم أعلى من نقطة الندى لحمض الكبريت عن طريق إنقاص سطح التبادل الحراري لمسخن الهواء الأول حتى1900m2 تؤدي إلى تخفيض التآكل في المسخن الأول, و زيادة مردود المرجل بحوالي2% وتخفيض استهلاك الوقود بنسبة 2% .
This research aims to study the reduction of air heaters' corrosion in steam boilers that work at partial loads, and to increase their efficiency. Therefore, the work of two boilers were studied: the first one contains three air heaters, while the other one contains two.
The results showed an active corrosion in air heaters of the first boiler; however, its efficiency was higher than that of the other boiler, in which the air heaters showed lower corrosion. This research also showed that maintaining the exhaust gases temperature above the dew point of sulfuric acid by decreasing the heat exchange surface of the first air heater up to 1900m2 will lead to corrosion reduction in the first heater, increasing the boiler efficiency almost 2% and reducing the fuel consumption 2% .
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2019 �ttps://creativecommons.org/licenses/by-nc-sa/4.0/
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
The authors retain the copyright and grant the right to publish in the magazine for the first time with the transfer of the commercial right to Tishreen University Journal for Research and Scientific Studies - Engineering Sciences Series
Under a CC BY- NC-SA 04 license that allows others to share the work with of the work's authorship and initial publication in this journal. Authors can use a copy of their articles in their scientific activity, and on their scientific websites, provided that the place of publication is indicted in Tishreen University Journal for Research and Scientific Studies - Engineering Sciences Series . The Readers have the right to send, print and subscribe to the initial version of the article, and the title of Tishreen University Journal for Research and Scientific Studies - Engineering Sciences Series Publisher
journal uses a CC BY-NC-SA license which mean
You are free to:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material
- The licensor cannot revoke these freedoms as long as you follow the license terms.
- Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- NonCommercial — You may not use the material for commercial purposes.
- ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.