Experimental Study on Poplar Veneer Drying Using a Greenhouse Solar-dehumidification Drying Chamber

ZHANG Xin-yu; DING Yu; ZHANG Jing; CHU De-miao; MU Jun

doi:10.19455/j.mcgy.20200404

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Experimental Study on Poplar Veneer Drying Using a Greenhouse Solar-dehumidification Drying Chamber
1. College of Materials Science and Technology,Beijing Forestry University,Key Laboratory of Wood Materials Science and Application of Ministry of Education
Vol. 34, Issue 4, Pages: 13-16(2020)
DOI： 10.19455/j.mcgy.20200404

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[1]张新宇,丁宇,张静,储德淼,母军.温室型太阳能-除湿干燥室干燥杨木单板的试验研究[J].木材工业,2020,34(04):13-16+37.

ZHANG Xin-yu, DING Yu, ZHANG Jing, et al. Experimental Study on Poplar Veneer Drying Using a Greenhouse Solar-dehumidification Drying Chamber. [J]. China Wood Industry 34(4):13-16(2020)
[1]张新宇,丁宇,张静,储德淼,母军.温室型太阳能-除湿干燥室干燥杨木单板的试验研究[J].木材工业,2020,34(04):13-16+37. DOI： 10.19455/j.mcgy.20200404.

ZHANG Xin-yu, DING Yu, ZHANG Jing, et al. Experimental Study on Poplar Veneer Drying Using a Greenhouse Solar-dehumidification Drying Chamber. [J]. China Wood Industry 34(4):13-16(2020) DOI： 10.19455/j.mcgy.20200404.

摘要

利用温室型太阳能-除湿干燥室,采用开式模式、闭式模式和组合模式干燥,分析干燥速率、能耗及干燥模式对杨木单板质量的影响。结果表明:本试验条件下,空窑或闭式模式室内温度高于室外23～27℃;初含水率99.21%的单板预干至30%,闭式模式耗时3 h,干燥速率为21.39%/h,耗电量为5.56 kW·h/m,3,;当含水率由30%降至12%左右,闭式、开式模式干燥分别耗时1、3 h,对应的干燥速率为16.56%/h、5.70%/h。闭式模式借助除湿机在排出水分的同时回收热量,缩短了干燥时间,相比于组合模式可降低干燥能耗。

Abstract

Using a greenhouse solar-dehumidification drying chamber at various modes, including open-mode, closed-mode and combined-mode, the drying process, the drying rate, the energy consumption and the quality of poplar veneer were evaluated. The results showed that under the conditions, at the air-dry kiln or closed-mode, the indoor temperature was about 23～27 ℃ higher than the outdoor temperature. When the veneer with an initial moisture content of 99.21% was pre-dried to 30%, the closed-mode drying took 3 h, and the drying rate was 21.39%/h, the energy consumption was 5.56 kW·h/m,3,. When the moisture content of veneer was reduced from 30% to about 12%, the closed-mode and open-mode drying process took 1 h and 3 h respectively, with corresponding drying rate of 16.56%/h and 5.7%/h. The closed-mode used the dehumidifier to recover heat while discharging water, which shortens the drying time. Compared with the combined mode, it can also reduce drying energy consumption.