| 摘要: |
| 为了减少小黄鱼(Pseudosciaena polyactis)干燥过程的能耗, 在前期实验的基础上, 采用响应面分析法, 以单位能耗除湿值(SMER)和挥发性盐基总氮值(T-VBN)两者的综合指标Y为最终评价指标, 对热泵干燥阶段的温度A、分阶段干燥的转换点含水率B、后期热风干燥阶段的温度C三个条件进行优化, 模拟得到回归方程的预估模型。结果表明, 小黄鱼联合干燥的最优条件为热泵干燥温度A=50℃、转换点含水率B=32.62%和热风干燥温度C=44.01℃, 在此条件下比较热泵干燥(HPD)、热泵-热风联合干燥(HPD+AD)、热风干燥(AD)三种干燥方式下的样品品质和耗能, 联合干燥得到的小黄鱼干品质高于热风干燥, 而且干燥能耗降低了34.8%。 |
| 关键词: 小黄鱼 联合干燥 工艺优化 响应面分析 |
| DOI：10.11693/hyhz201305019019 |
| 分类号: |
| 基金项目:浙江省重大科技项目, 2012C11015-2号; 浙江省公益项目, 2012C21068号, 2012C33084号; 浙江省自然科学基金项目, LY13C200005号; 舟山市科技项目, 2012C21018号。 |
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| OPTIMIZATION OF ENERGY-SAVING PARAMETERS ABOUT HEAT PUMP AND HOT AIR COMBINED DRYING OF PSEUDOSCIAENA POLYACTIS BY RESPONSE SURFACE ETHODOLOGY |
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SUN Ai, XIE Chao, HE Han-Lian
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School of Food Science and Pharmacy, Zhejiang Ocean University
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| Abstract: |
| Based on the preliminary experiments, heat pump drying (HPD) temperature, moisture conversion point, late hot air drying (AD) temperature were used as independent variables in this optimization study to reduce energy consumption in drying process of Pseudosciaena polyactis. A mathematical regression model for predicting composite indicator Y of SMER and T-VBN value was established by fitting Box-Benhnken central composite design experimental results, the interactive effects of the independent variables on composite indicator Y of drying were investigated by response surface methodology. The optimal protocol for heat pump and hot air combined drying of P. polyactis was based on heat pump drying temperature (A=50℃), moisture changing point (B=32.62%) and hot air drying temperature (C=44.01℃). Under optimal conditions, comparison of sample quality and energy consumption was carried out between HPD, combined drying of heat pump and hot air drying (HPD+AD), AD. The quality of P. polyactis dried by HPD+AD was better than by hot air drying, and the optimum energy consumption reduced 34.8%. |
| Key words: Pseudosciaena polyactis combined drying crafts optimization response surface analysis |
