| 89 | 0 | 22 |
| 下载次数 | 被引频次 | 阅读次数 |
设计了一种基于空气回热的闭式热泵干燥系统，为了提高系统烘干性能，研究了烘干过程中的可调控参数，通过多组实验分析旁通比、干燥室温度和循环风速对回热系统的具体影响，并与无回热系统进行性能对比。实验结果表明：旁通比、干燥室温度和循环风速都存在最佳值，3种影响因素使回热系统的单位除湿能耗比(SMER)提升5.57%～37.40%;相较于无回热系统，回热系统在优化后的SMER提升7.71%～22.78%。
Abstract：A closed-loop heat pump drying system based on air heat recuperation was designed to enhance drying performance. To optimize system efficiency, adjustable parameters during the drying process were investigated. Multiple experiments were conducted to analyze the effects of bypass ratio, drying chamber temperature, and circulating airflow velocity on the recuperation system, and performance comparisons were made with a non-recuperative system. The experimental results indicate that each of these three factors,including bypass ratio, drying chamber temperature, and circulating airflow velocity, has an optimal value.The recuperation system improved the specific moisture extraction rate(SMER) by 5.57%～37.40%,depending on the conditions. Compare with the non-recuperative system, the optimized recuperation system achieve anSMERenhancement of 7.71%～22.78%.
[1] DONG X F,ZHAO H X,KONG F C,et al.Parameter optimization of multistage closed series heat pump drying system[J].Applied thermal engineering,2022,216:119124.
[2] ZOU L G,LIU Y,YU M Q,et al.A review of solar assisted heat pump technology for drying applications[J].Energy,2023,283:129215.
[3] CHOI J Y,LEE D C,PARK M H,et al.Effects of compressor frequency and heat exchanger geometry on dynamic performance characteristics of heat pump dryers[J].Energy,2021,235:121391.
[4] 赵亚，朱智壮，石启龙，等.成膜预处理提高扇贝柱超声波辅助热泵干燥效率及品质[J].农业工程学报，2022,38(18):274-283.
[5] HU A J,MA L N,LIU D,et al.Study on drying characteristics of sludge under different conditions based on the low-temperature sludge heat pump drying model[J].Journal of cleaner production,2024,450:142035.
[6] KUMAR S,KUMAR Y,SHEKHAR S,et al.Different methods for boosting the thermal performances of solar drying systems:a review[J].AIP conference proceedings,2024,3111(1):040007.
[7] SINGH A,SARKAR J,SAHOO R R.Experimental investigation on novel heat pump system for combined drying and air conditioning for arid climate[J].Drying technology,2022,40(16):3556-3567.
[8] AMIRSEVEDI L,GHOBADIAN B,AGHBASHLO M,et al.Synergizing heat pump and solar photovoltaic-thermal systems for efficient drying of onion slices:kinetics,energy,and quality analysis[J].Journal of renewable energy and environment,2024,11(4):125-140.
[9] VIJAYAN S,ARJUNAN T V,KUMAR A.Exergo-environmental analysis of an indirect forced convection solar dryer for drying bitter gourd slices[J].Renewable energy,2020,146:2210-2223.
[10] LIU H L,YOUSAF K,YU Z W,et al.Drying process optimization of garlic slices in closed-loop heat pump drying system by Box-Behnken design[J].Journal of food processing and preservation,2022,46(1):e16190.
[11] YOUSAF K,LIU H L,GAO X,et al.Influence of environmental conditions on drying efficiency and heat pump performance in closed and open loop drying of paddy[J].Drying technology,2020,38(16):2217-2230.
[12] SHEN J B,GUO T,TIAN Y F,et al.Design and experimental study of an air source heat pump for drying with dual modes of single stage and cascade cycle[J].Applied thermal engineering,2018,129:280-289.
[13] HOU Y X,WU W D,LI Z B,et al.Effect of drying air supply temperature and internal heat exchanger on performance of a novel closed-loop transcritical CO2 air source heat pump drying system[J].Renewable energy,2023,219:119516.
[14] CHENG J H,CAO X,SHAO L L,et al.Performance evaluation of a novel heat pump system for drying with EVI-compressor driven precooling and reheating[J].Energy,2023,278:127989.
[15] FAN C H,PEI D S,WEI H Q.A novel cascade energy utilization to improve efficiency of double reheat cycle[J].Energy conversion and management,2018,171:1388-1396.
[16] CASTRO A M,MAYORGA E Y,MORENO F L.Mathematical modelling of convective drying of fruits:a review[J].Journal of food engineering,2018,223:152-167.
[17] BAS-BELLVER C,BARRERA C,BETORET N,et al.Turning agri-food cooperative vegetable residues into functional powdered ingredients for the food industry[J].Sustainability,2020,12(4):1284.
[18] JIANG N N,MA J Y,ZHANG J,et al.Effects of slice thickness and hot-air temperature on drying characteristics,physico-chemical properties and antioxidants of Mulus asiatica Nakai Slices[J].Science and technology of food industry,2024,45(10):32-39.
[19] XU L,FANG X J,WU W J,et al.Effects of high-temperature pre-drying on the quality of air-dried shiitake mushrooms (Lentinula edodes)[J].Food chemistry,2019,285:406-413.
[20] RICHA,DR SHAHI,NAVIN LOHANI,et al.Design and development of resistance heating apparatus-cum-solar drying system for enhancing fish drying rate[J].Food process engineering,2021,45:3839.
基本信息:
DOI：10.15926/j.cnki.issn1672-6871.2025.04.003
中图分类号:TS203
引用信息:
[1]梁坤峰,赵一宸,陈浩远等.基于空气回热的闭式热泵干燥系统性能研究[J].河南科技大学学报(自然科学版),2025,46(04):17-23+118.DOI:10.15926/j.cnki.issn1672-6871.2025.04.003.
基金信息:
国家自然科学基金项目(52378094,52376005); 河南省科技发展计划项目(222102220033)