Fuzzy-controlled humidity variation by silica gel and nitrogen gas in an atmospheric chamber
Controlled humidity environment is of significance in many scientific researches and experiments. In most laboratory-scale atmospheric chambers, an electrical temperature-based control system is used to adjust humidity. Since these chambers are not affordable in every laboratory, other low cost cham...
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| Format: | Article |
| Language: | English |
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Universiti Putra Malaysia Press
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/55853/ http://psasir.upm.edu.my/id/eprint/55853/1/16-JTS%28S%29-0130-2016-4thProof.pdf |
| _version_ | 1848852918269116416 |
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| author | Ghahraei, Ali Md Yunus, Nurul Amziah Abdul Halin, Izhal Sulaiman, Nasri |
| author_facet | Ghahraei, Ali Md Yunus, Nurul Amziah Abdul Halin, Izhal Sulaiman, Nasri |
| author_sort | Ghahraei, Ali |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Controlled humidity environment is of significance in many scientific researches and experiments. In most laboratory-scale atmospheric chambers, an electrical temperature-based control system is used to adjust humidity. Since these chambers are not affordable in every laboratory, other low cost chambers using nitrogen gas or silica gel are used to adjust humidity. In this paper, a mechanism was developed to control the relative humidity in closed lab-scale chambers. Humidification is done by spraying water through a blower fan while de-humidification is by pumping air through silica gel as well as nitrogen gas injection. A Mamdani type fuzzy controller was designed to control the components and relative humidity. The results show the proposed system and controller can adjust and maintain relative humidity from 41% to 100% with maximum overshoot of 1% and the maximum range of error of steady state of 1.2 %. |
| first_indexed | 2025-11-15T10:45:42Z |
| format | Article |
| id | upm-55853 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:45:42Z |
| publishDate | 2017 |
| publisher | Universiti Putra Malaysia Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-558532017-07-05T03:43:44Z http://psasir.upm.edu.my/id/eprint/55853/ Fuzzy-controlled humidity variation by silica gel and nitrogen gas in an atmospheric chamber Ghahraei, Ali Md Yunus, Nurul Amziah Abdul Halin, Izhal Sulaiman, Nasri Controlled humidity environment is of significance in many scientific researches and experiments. In most laboratory-scale atmospheric chambers, an electrical temperature-based control system is used to adjust humidity. Since these chambers are not affordable in every laboratory, other low cost chambers using nitrogen gas or silica gel are used to adjust humidity. In this paper, a mechanism was developed to control the relative humidity in closed lab-scale chambers. Humidification is done by spraying water through a blower fan while de-humidification is by pumping air through silica gel as well as nitrogen gas injection. A Mamdani type fuzzy controller was designed to control the components and relative humidity. The results show the proposed system and controller can adjust and maintain relative humidity from 41% to 100% with maximum overshoot of 1% and the maximum range of error of steady state of 1.2 %. Universiti Putra Malaysia Press 2017 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/55853/1/16-JTS%28S%29-0130-2016-4thProof.pdf Ghahraei, Ali and Md Yunus, Nurul Amziah and Abdul Halin, Izhal and Sulaiman, Nasri (2017) Fuzzy-controlled humidity variation by silica gel and nitrogen gas in an atmospheric chamber. Pertanika Journal of Science & Technology, 25 (spec. Feb.). pp. 133-142. ISSN 0128-7680; ESSN: 2231-8526 http://www.pertanika.upm.edu.my/Pertanika%20PAPERS/JST%20Vol.%2025%20(S)%20Feb.%202017/16-JTS(S)-0130-2016-4thProof.pdf |
| spellingShingle | Ghahraei, Ali Md Yunus, Nurul Amziah Abdul Halin, Izhal Sulaiman, Nasri Fuzzy-controlled humidity variation by silica gel and nitrogen gas in an atmospheric chamber |
| title | Fuzzy-controlled humidity variation by silica gel and nitrogen gas in an atmospheric chamber |
| title_full | Fuzzy-controlled humidity variation by silica gel and nitrogen gas in an atmospheric chamber |
| title_fullStr | Fuzzy-controlled humidity variation by silica gel and nitrogen gas in an atmospheric chamber |
| title_full_unstemmed | Fuzzy-controlled humidity variation by silica gel and nitrogen gas in an atmospheric chamber |
| title_short | Fuzzy-controlled humidity variation by silica gel and nitrogen gas in an atmospheric chamber |
| title_sort | fuzzy-controlled humidity variation by silica gel and nitrogen gas in an atmospheric chamber |
| url | http://psasir.upm.edu.my/id/eprint/55853/ http://psasir.upm.edu.my/id/eprint/55853/ http://psasir.upm.edu.my/id/eprint/55853/1/16-JTS%28S%29-0130-2016-4thProof.pdf |