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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
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Tao Zeng1, Weidong Wu1, Min Li2, Jing Wang1, Yaxiang Hou1
Journal of Refrigeration | 2025, 46(1) : 94 - 100
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Journal of Refrigeration | 2025, 46(1): 94-100
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
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Tao Zeng1, Weidong Wu1, Min Li2, Jing Wang1, Yaxiang Hou1
Affiliations
  • 1.School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
  • 2.Shanghai Customs Electromechanical Products Testing Technology Center, Shanghai, 200135, China
Published: 2025-02-16 doi: 10.12465/j.issn.0253-4339.2025.01.094
Outline
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Drying of Lentinus edodes is an effective method to prevent problems such as rotting and browning. During the drying process, the loading density has a significant impact on system performance and drying quality. Based on a newly designed quasi-two-stage enhanced vapor injection heat pump closed drying system, the effects of different loading densities of Lentinus edodes on moisture ratio, drying rate, coefficient of performance of the system (COPsys), specific moisture extraction rate (SMER), drying capacity per unit energy consumption, and rehydration ratio were experimentally investigated. The results showed that when the drying air supply temperature was 55 ℃ and the circulating air volume was 580 m3/h, the drying rate of Lentinus edodes decreased gradually with the loading density in the drying chamber, from 1.5 kg/m2 to 3.0 kg/m2. Meanwhile, the average COPsys, average SMER, drying capacity per unit energy consumption, and rehydration ratio increased first and then decreased. When the loading density was 2.4 kg/m2, the average SMER, drying capacity per unit energy consumption, and rehydration ratio reached the maximum values of 0.320 kg/(kW·h), 0.391 kg/(kW·h), and 3.6, respectively. When the loading density was 2.4 kg/m2, the average COPsys reached its maximum of 4.22.

Tao Zeng, Weidong Wu, Min Li, Jing Wang, Yaxiang Hou. 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[J]. Journal of Refrigeration, 2025 , 46 (1) : 94 -100 . DOI: 10.12465/j.issn.0253-4339.2025.01.094
Funding
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  • National Natural Science Foundation of China(52176016)
Appendix
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Year 2025 volume 46 Issue 1
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Article Info
doi: 10.12465/j.issn.0253-4339.2025.01.094
  • Receive Date：2023-07-30
  • Online Date：2026-03-13
  • Published：2025-02-16
Article Data
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History
  • Received：2023-07-30
  • Revised：2023-09-18
  • Accepted：2023-11-02
Funding
National Natural Science Foundation of China(52176016)
Affiliations
    1.School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
    2.Shanghai Customs Electromechanical Products Testing Technology Center, Shanghai, 200135, China

Corresponding:

Wu Weidong, male, professor, School of Energy and Power Engineering, University of Shanghai for Science and Technology, 86-21-55271875, E-mail: . Research fields: refrigeration and cryogenic engineering.
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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