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| Study on the Technology of Reliable Life Prediction of Ship Plate Heat Exchanger |
| Received:October 13, 2015 Revised:April 15, 2016 |
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| DOI：10.7643/issn.1672-9242.2016.02.025 |
| KeyWord:reliable life prediction fuzzy mathematic similar product plate heat exchanger of ship |
| Author | Institution |
| LIU Long-bo |
Naval Academy of Armament， Beijing ， China |
| WANG Shou-zhen |
Academe of Second Artillerist， Beijing ， China |
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| Abstract: |
| Objective For the reliable life prediction of a new- type plate heat exchanger of ship, this paper presented a prediction method of product reliability using similar product information, taking into account the quantitative information obtained during use of similar products. Methods The similarity ratio was given by the experts based on their experience, and then the reliability of similar products was directly converted using inheritance factor. The performance data of the plate heat exchanger and similar products were comparatively analyzed, and the conversion coefficient between the two products was calculated using the concept of fuzzy closeness. Results In combination with the actual using data of similar products, through the comparison of heat transfer coefficient, velocity change and other factors, the similar product conversion coefficient was finally determined to be 0.286. The experimental time of the plate heat exchanger after conversion was further determined, and the reliability of this product was roughly estimated using the trouble-free truncated life evaluation method. Conclusion This method offered a new method for life estimation using similar products, and optimized the expert assessment in part on the similarity of the subjective factor from the view of product performance features. |
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