| This Article Has Been：Browse 238 Times Download 293 Times |
Scan Up The Code！ |
| 开式空气循环热泵干燥系统性能仿真分析 |
|
战斌飞1, 王智超1,2, 孙郁3, 徐策1, 邵双全4, 徐昭炜1,2, 杨英霞1,2
|
|
|
| (1.建筑安全与建筑环境国家重点实验室;2.中国建筑科学研究院有限公司;3.中国科学院低温工程学重点实验室 中国科学院理化技术研究所;4.华中科技大学能源与动力工程学院) |
|
| 摘要: |
| 为解决能源使用效率低、HCFC/HFC等非环保制冷剂使用等问题，提出了不同于传统干燥技术的以空气为工质的空气循环热泵干燥（ACHPD）系统新技术。建立了数学仿真模型，通过所构建实验台的实验结果进行验证，干燥速率误差在±0.01%以内，系统功率误差在±7%以内。与传统的电加热器干燥（EHD）系统相比，当水质量蒸发率从0.75 kg/h增至3.45 kg/h时，ACHPD系统的节能率达到15%~27%。进气温度由10 ℃增至40 ℃和相对湿度由30%增至80%分别使单位除湿能效比（MER）降低约7%和21%。膨胀机效率由0.55增至0.8和压缩机效率由0.4增至0.9会使系统的能效分别降低17%和36%。 |
| 关键词: 开式循环 空气循环 热泵 干燥系统 |
| DOI： |
| Received:January 12, 2023Revised:February 17, 2023 |
| 基金项目:中国科学院低温工程学重点实验室开放课题（CRYO202211），北京市科协金桥工程种子资金（ZZ22041），中国建筑科学研究院青年研究基金项目（20210109331030027）资助。 |
|
| Performance Simulation of Open-loop Air Cycle Heat Pump Drying System |
|
Zhan Binfei1,2, Wang Zhichao1,2, Sun Yu3, Xu Ce1,2, Shao Shuangquan4, Xu Zhaowei1,2, Yang Yingxia1,2
|
| (1.State Key Laboratory of Building Safety and Built Environment;2.China Academy of Building Research;3.CAS Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry;4.School of Energy and Power Engineering, Huazhong University of Science and Technology) |
| Abstract: |
| In contrast with the conventional drying technology, a novel air cycle heat pump drying (ACHPD) system, which uses air as its working medium, is proposed to solve the problems of low energy efficiency and eliminate the use of HCFCs/HFCs. A simulation model is established, and its verification via experimental results from a constructed test bench indicates errors of the drying rate within ±0.01% and the system power within ±7%. Compared with a conventional electric heater drying (EHD) system, the energy-saving rate of the ACHPD system reaches 15%–27% when the water evaporation rate increases from 0.75 kg/h to 3.45 kg/h. The increase of the inlet air temperature is 10–40 ℃ and the relative humidity is 30%–80%, which reduces the moisture extraction ratio (MER) by approximately 7% and 21%, respectively. The efficiency improvements of the expander and compressor are 0.55–0.8 and 0.4–0.9, respectively, which can deteriorate the energy efficiency of the system by 17% and 36%, respectively. The research results provide new technical references for the application of heat pump technology in the drying field. |
| Key words: open loop air cycle heat pump drying system |
