@article{Zeng2025, 
author = {Tao Zeng and Weidong Wu and Min Li and Jing Wang and Yaxiang Hou},
title = {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},
year = {2025},
journal = {Journal of Refrigeration},
volume = {46},
number = {1},
pages = {94-100},
keywords = {heat pump, drying, Lentinus edodes, loading density, performance},
url = {https://www.sciopen.com/article/10.12465/j.issn.0253-4339.2025.01.094},
doi = {10.12465/j.issn.0253-4339.2025.01.094},
abstract = {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.}
}