摘要： 为确定玻璃钢渔船最佳的绝热层厚度及传热系数，建立了玻璃钢渔船围壁结构的传热数学模型。基于该理论分析模型，分析了不同船舶尺度、不同设计温度下的玻璃钢渔船在不同绝热层厚度的传热系数及冷冻负荷。结果显示：玻璃钢渔船的传热系数最大不超过0.15 W/m2·K，远小于钢质船传热系数；船长为30~40 m的玻璃钢渔船多为超低温或中低温渔船，绝热层厚度对制冷设备选型影响较小，绝热层厚度可依据船体结构计算的实际骨材高度要求最小值确定，传热系数取值0.1 W/m2·K；船长为20~30 m的玻璃钢渔船多为冰鲜渔船，绝热层厚度对生产成本的影响远大于对冷冻成本的影响，绝热层厚度可依据船体结构计算的实际骨材高度要求最小值确定，传热系数可取值0.15 W/m2·K。本研究为玻璃钢渔船制冷系统设计提供参考。

关键词: 玻璃钢渔船, 船体结构, 传热系数, 理论分析, 制冷负荷

Abstract: To determine the optimal insulation thickness and heat transfer coefficient of FRP fishing vessels, this paper established the mathematical model of heat transfer of the FRP fishing vessel structure. Based on the theoretical analysis model. The influence of the insulation thicknesses on the heat transfer coefficients and frozen loads of FRP fishing vessels with different ship sizes are analyzed under different design temperatures. The results indicate that: the maximum heat transfer coefficient of an FRP fishing vessel is smaller than 0.15 W/m2·K, which is much smaller than that of a steel vessel; Most of the FRP fishing vessels with a length of 30-40m are ultra-low temperature or ordinary cold fishing vessels. The thickness of the insulation layer has little effect on the selection of refrigeration equipment. The thickness of the insulation layer can be determined according to the minimum requirement of the actual structure calculated. The value of the heat transfer coefficient is 0.1 W/m2·K; Most of the FRP fishing vessels with a length of 20-30 m are ice-fresh fishing vessels, and the influence of the insulation thickness on the production cost is much more than the freezing cost. The thickness of the insulation layer can be determined according to the minimum requirement of the actual structure calculated. The value of the heat transfer coefficient is 0.15 W/m2·K. This study provides a theoretical basis for the refrigeration system design of FRP fishing vessels in the future.

Key words: FRP, fishing boat, hull structure；the transfer coefficient, theoretical analysis, frozen load