Study on the Intermittent Drying Process of Paddy Rice employing a Closed-Loop Transcritical CO<sub>2</sub> Heat Pump System

Huang Jinghan Wu Weidong Wang Huaichen

doi:10.12465/issn.0253-4339.20250906001

您当前的位置：

首页 >

文章列表页 >

Study on the Intermittent Drying Process of Paddy Rice employing a Closed-Loop Transcritical CO₂ Heat Pump System

更新时间：2026-03-06

- Study on the Intermittent Drying Process of Paddy Rice employing a Closed-Loop Transcritical CO₂ Heat Pump System
- Journal of Refrigeration Pages: 1-11(2026)
- 作者机构：
  
  上海理工大学能源与动力工程学院上海 200093
- 作者简介：
- 基金信息：
- DOI：10.12465/issn.0253-4339.20250906001
  CLC： TB61⁺1;S339.3⁺3
- CSTR：XXXXX.XX.XXX.20250906001
- Received：06 September 2025，
  
  Revised：2025-10-24，
  
  Accepted：20 November 2025，
  
  Online First：06 March 2026，
- 稿件说明：
移动端阅览
黄靖涵,武卫东,王怀琛.稻谷闭式跨临界CO₂热泵间歇干燥工艺研究[J].制冷学报,DOI:10.12465/issn.0253-4339.20250906001. CSTR: XXXXX.XX.XXX.20250906001.

Huang Jinghan Wu Weidong Wang Huaichen.Study on the Intermittent Drying Process of Paddy Rice employing a Closed-Loop Transcritical CO₂ Heat Pump System[J].Journal of Refrigeration,DOI:10.12465/issn.0253-4339.20250906001. CSTR: XXXXX.XX.XXX.20250906001.
黄靖涵,武卫东,王怀琛.稻谷闭式跨临界CO₂热泵间歇干燥工艺研究[J].制冷学报,DOI:10.12465/issn.0253-4339.20250906001. CSTR: XXXXX.XX.XXX.20250906001. DOI：

Huang Jinghan Wu Weidong Wang Huaichen.Study on the Intermittent Drying Process of Paddy Rice employing a Closed-Loop Transcritical CO₂ Heat Pump System[J].Journal of Refrigeration,DOI:10.12465/issn.0253-4339.20250906001. CSTR: XXXXX.XX.XXX.20250906001. DOI：

摘要

针对现有稻谷干燥中存在干燥品质较低和能耗较高的问题，本文基于闭式跨临界CO

热泵干燥系统，实验研究了缓苏比作为关键因素对稻谷热泵干燥品质指标和系统性能指标的影响规律。结果表明，装载量为25 kg，干燥室送风温度为55 ℃，物料表面风速为1.5 m/s的条件下，随着缓苏比从0增至4/6，稻谷表面水分蒸发速率加快，系统的平均干燥速率、平均SMER、单位能耗干燥量、单位时间单位体积干燥量均呈现上升趋势，爆腰率和脂肪酸值均呈现下降趋势，而平均COP

和COP

sys

整体趋势较为平稳。当缓苏比为4/6时，平均SMER为1.061 kg/（kW·h）、单位能耗干燥量为7.97 kg/（kW·h）、单位时间单位体积干燥量为67.60 kg/（m

·h）、平均COP

为4.72、平均COP

sys

为8.71，爆腰率为16%、脂肪酸值为11.67 mgKOH/100 g。综合考虑能耗、干燥效率与品质，最终选择4/6作为稻谷热泵干燥的最佳缓苏比。研究结果可为稻谷热泵干燥工艺的优化提供参考和指导。

Abstract

In view of the problems of low drying quality and high energy consumption in the existing paddy rice drying process， this study experimentally studied the influence law of the key factor of the "Tempering Ratio" on the quality indicators and system performance indicators of paddy rice heat pump drying based on the closed-loop transcritical CO

heat pump drying system. Experimental results indicated that under the conditions of a 25 kg loading capacity， drying chamber air temperature of 55 ℃， and material surface air velocity of 1.5 m/s， as the tempering ratio increased from 0 to 4/6， the paddy rice surface moisture evaporation rate accelerated. Correspondingly， the average drying rate， average specific moisture evaporation rate （SMER）， energy consumption per unit of drying capacity， and drying capacity per unit volume per unit

time for the system showed increasing trends， whereas both the cracking rate and fatty acid value for the system exhibited decreasing trends. The average coefficient of performance for the heat pump （COP

） and the average coefficient of performance for the system （COP

sys

） remained relatively stable. When the tempering ratio was 4/6， the average SMER reached 1.061 kg/（kW·h）， energy consumption per unit of drying capacity was 7.97 kg/（kW·h）， drying capacity per unit volume per unit time was 67.60 kg/（m³·h）， average COP

was 4.72， average COP

sys

was 8.71， cracking rate was 16%， and fatty acid value was 11.67 mgKOH/100g. Considering energy consumption， drying efficiency， and quality comprehensively， the tempering ratio of 4/6 was ultimately selected as the optimal ratio for rice heat pump drying. The research results can provide reference and guidance for the optimization of the heat pump drying process of paddy rice.

关键词

Keywords

references

丁宇 . 高温热泵干燥技术在谷物烘干中的应用研究［D］. 合肥：合肥工业大学， 2022 .

Ding Yu . Application of high temperature heat pump drying technology in grain drying ［D］. Hefei ： Hefei University of Technology ， 2022 .

王洪超，车刚，万霖，等 . 稻谷双向通风均匀性及变温干燥工艺参数优化研究［J］. 黑龙江八一农垦大学学报， 2024 ， 36 （ 6 ）： 101 - 109 .

Wang Hongchao ， Che Gang ， Wan Lin ， et al . Study on the uniformity of bidirectional ventilation and parameter optimization of variable temperature drying process for paddy ［J］. Journal of Heilongjiang Bayi Agricultural University ， 2024 ， 36 （ 6 ）： 101 - 109 .

刘春山，陈苏，陈思羽，等 . 稻谷热风干燥工艺分析与模型探究［J］. 农业机械学报， 2024 ， 55 （ S1 ）： 364 - 372 .

Liu Chunshan ， Chen Su ， Chen Siyu ， et al . Analysis and model exploration of paddy hot air drying process ［J］. Transactions of the Chinese Society for Agricultural Machinery ， 2024 ， 55 （ S1 ）： 364 - 372 .

李超，张震，李素娟，等 . 不同干燥方式对稻谷品质的影响［J］. 粮食储藏， 2022 ， 51 （ 1 ）： 40 - 42， 52 .

Li Chao ， Zhang Zhen ， Li Sujuan ， et al . Influences of different rice drying methods on its quality ［J］. Grain Storage ， 2022 ， 51 （ 1 ）： 40 - 42， 52 .

张林威 . 三种干燥方式对蒸谷米品质及储藏性能的影响研究［D］. 长沙：中南林业科技大学， 2024 .

Zhang Linwei . Study on the effects of three drying methods on the quality and storage performance of parboiled rice ［D］. Changsha ： Central South University of Forestry & Technology ， 2024 .

陈坤杰，王硕，颜建春，等 . 石墨烯低温远红外辐射干燥稻谷干燥特性与品质研究［J］. 农业机械学报， 2024 ， 55 （ 4 ）： 346 - 351 .

Chen Kunjie ， Wang Shuo ， Yan Jianchun ， et al . Drying characteristics and quality of paddy under low temperatures and far-infrared drying conditions of graphene ［J］. Transactions of the Chinese Society for Agricultural Machinery ， 2024 ， 55 （ 4 ）： 346 - 351 .

Zhu Shiyao ， Wu Weidong ， Huang Hua ， et al . Experimental investigation of the effect of heat pump drying temperature on drying characteristics of Auricularia auricula ［J］. Sustainable Energy Technologies and Assessments ， 2024 ， 71 ： 103973 .

李浩权，赵锡和，汤石生，等 . 稻谷烘干储藏一体化技术研究［J］. 现代农业装备， 2019 ， 40 （ 4 ）： 71 - 74 .

Li Haoquan ， Zhao Xihe ， Tang Shisheng ， et al . Research on integrated technology of rice drying and storage ［J］. Modern Agricultural Equipments ， 2019 ， 40 （ 4 ）： 71 - 74 .

李伟钊，魏娟，苑亚，等 . 循环式稻谷热泵除湿干燥系统性能的实验研究［J］. 制冷技术， 2020 ， 40 （ 4 ）： 62 - 66 .

Li Weizhao ， Wei Juan ， Yuan Ya ， et al . Experimental research on performance of circulating heat pump dehumidification and drying system for rice ［J］. Chinese Journal of Refrigeration Technology ， 2020 ， 40 （ 4 ）： 62 - 66 .

Schluterman D A ， Siebenmorgen T J . Relating rough rice moisture content reduction and tempering duration to head rice yield reduction ［J］. Transactions of the ASABE ， 2007 ， 50 （ 1 ）： 137 - 142 .

Yang Zhao ， Zhu Enlong ， Zhu Zongsheng ， et al . A comparative study on intermittent heat pump drying process of Chinese cabbage （Brassica campestris L.ssp） seeds ［J］. Food and Bioproducts Processing ， 2013 ， 91 （ 4 ）： 381 - 388 .

Dias da Silva G ， Barros Z M P ， de Medeiros R A B ， et al . Pretreatments for melon drying implementing ultrasound and vacuum ［J］. LWT ， 2016 ， 74 ： 114 - 119 .

Defendi R O ， Paraíso P R ， de Matos Jorge L M . Optimization study of soybean intermittent drying in fixed-bed drying technology ［J］. Drying Technology ， 2017 ， 35 （ 1 ）： 125 - 137 .

Yang Zongyu ， Yang Zhao ， Yu Fei ， et al . Ultrasound-assisted heat pump intermittent drying of adzuki bean seeds： drying characteristics and parameter optimization ［J］. Journal of Food Process Engineering ， 2020 ， 43 （ 10 ）： e13501 .

Singh A ， Sarkar J ， Sahoo R R . Experimentation and performance analysis of solar-assisted heat pump dryer for intermittent drying of food chips ［J］. Journal of Solar Energy Engineering ， 2022 ， 144 （ 2 ）： 021004 .

Mabasso G A ， Siqueira V C ， Resende O ， et al . The effect of intermittent drying with variable resting times on quality parameters of corn obtained after storage ［J］. LWT ， 2023 ， 182 ： 114855 .

Li Mengqing ， Li Mengyao ， Zhang Xuetao ， et al . Effect of infrared-combined hot air intermittent drying of jujube （zizyphus jujuba miller） slices： drying characteristics， quality， and energy consumption dimensions ［J］. Agriculture ， 2024 ， 14 （ 2 ）： 214 .

GB 5009.3—2016 食品安全国家标准食品中水分的测定［S］. （GB 5009 .

3—2016 National food safety standard： Determination of moisture in foods ［S］.

GB/T 20569—2006 稻谷储存品质判定规则［S］. （GB/T 20569 —

2006 Rules for evaluation of paddy storage quality ［S］.

GB/T 21015—2023 稻谷干燥技术规范［S］. （GB/T 21015 —

2023 Specification for Paddy Drying Technology ［S］.

Guan Chunlin ， Wu Weidong ， Zeng Tao ， et al . Study on intermittent drying process of lemon slices employing a closed-loop transcritical CO 2 heat pump system ［J］. International Journal of Refrigeration ， 2025 ， 172 ： 147 - 157 .

李栋 . 稻谷干燥应力裂纹生成扩展及抑制的试验研究和机理分析［D］. 北京：中国农业大学， 2001 .

Li Dong . Experimental study on the development and control of stress cracks of rough rice in drying ［D］. Beijing ： China Agricultural University ， 2001 .

Views

874

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Researches on the Optimal Process of Heat Pump Intermittent Drying

Research on Performance Simulation and Control Strategy of Indirect Heat Pump Systems for New Energy Commercial Vehicles

Energy Efficiency Evaluation of Residential Fresh Air Units with Exhaust Air Heat Recovery

Experimental Study on the Effect of Loading Density on the Performance of a Closed Drying System Using Quasi-Two-Stage Heat Pump for Lentinus edodes

Performance Analysis of CO2 Heat Pump System Based on Ejector and Integrated Mechanical Subcooling

Related Author

Zhao Haibo

Yang Zhao

Zhu Zongsheng

Geng Yi

Shi Junye

Chen Jiangping

Liu Zhiyong

Cheng Jiahao

Related Institution

Mechanical School, Tianjin University

Ocean School, Yantai University

Institute of Refrigeration and Cryogenics， Shanghai Jiao Tong University

XiZhong New Energy Vehicle Co.， Ltd.

Postdoctoral Station of Mechanical Engineering, Tongji University

Address：10/F, Yindu Mansion, 67 Fucheng Road, Haidian Dist, Beijing, China Postal code：100142
Tel：010-68711412 Email：editor@car.org.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09064830号-19 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰

AI伴读

Study on the Intermittent Drying Process of Paddy Rice employing a Closed-Loop Transcritical CO2 Heat Pump System

DOI：10.12465/issn.0253-4339.20250906001

摘要

Abstract

关键词

Keywords

references

Study on the Intermittent Drying Process of Paddy Rice employing a Closed-Loop Transcritical CO₂ Heat Pump System