船體塗裝廠排風及除濕系統節能效益之分析

Energy Efficiency Analysis for Exhaust and Dehumidification System of the Painting Plant of Shipyard

張禮文(Li-Wen Chang)

指導教授 ： 李宗興

國立臺北科技大學/機電學院/能源與冷凍空調工程系碩士班/碩士(2010年)

https://doi.org/10.6841/NTUT.2010.00564

摘要

海洋上的船舶當船體失去塗料保護後，船體腐蝕會造成船舶航行時安全的風險，因此船舶的塗裝技術受到造船工業的極度重視。船體塗裝品質受到作業環境濕度的影響很大，相對濕度過高會引起鋼板發生結露現象，造成塗裝層龜裂、剝落、生鏽及起泡等問題。船體塗裝廠使用排風及除濕系統，控制維持廠內相對濕度與空氣品質達到法規要求，所需耗能十分龐大，因此探討如何節能是本研究之主要動機。
本文利用理論分析之方式，探討船體塗裝廠之排風系統風量平衡、及除濕系統運轉模式的節能效益。研究內容首先以實驗量測的方法，分析當前排風系統的平衡狀態，探討風量平衡對塗裝環境的影響，以找出最佳送排風平衡比例。其次利用理論模擬方式，針對本文所提出之除濕系統節能操作策略，建立除濕系統的耗能分析模式，進行耗能分析與節能效益評估。
本研究提出的送排風風量平衡比例、及除濕系統節能操作策略，全年可減少電力量達844,950 kWh，降低塗裝廠全年總耗能比率達18.1%，確實可達到降低製造成本與節約能源之目的。

關鍵字

除濕轉輪 ； 排風 ； 除濕 ； 塗裝 ； 節能策略

並列摘要

The quality of hull painting is largely affected by the humidity in the operating environment. Excessive relative humidity cause dew condensation on the steel plate, which leads to problems like crack and peeling in painting layer, rust and blistering. To control the maintain the air quality in the plant and control the humidity within required limit, ventilation and dehumidification system is used in the painting plant, which consumes a great deal of energy, increasing the manufacturing cost.
This paper investigates the airflow balance of ventilation system and the energy efficiency of dehumidification system at painting plant of shipyards. To begin with, experimental measurements were used to analyze the status of balance of the present ventilation system, to examine the effects of balance of airflow on the painting environment, for purpose of finding the optimal ratio of ventilation balance. Theoretic simulation was then used to build the analytic model for energy consumption of the dehumidification system specifically for the energy-saving operation strategy of dehumidification system proposed in this paper, to assess the energy efficiency.
When the air flow balanced ratio of supply air and the energy saving operation strategy proposed in this study are applied, significant energy efficiency can be achieved to an extent of a decrease in electricity by 844,950 kWh for a year. That accounted for 18.1% of the total energy consumption for a year in the painting plant of shipyards, truly fulfilling the object of reducing painting cost.

並列關鍵字

Desiccant wheel ； Ventilation ； Dehumidification ； Painting ； Energy saving

參考文獻

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