This paper presents experimental performance of the greenhouse solar dryer for drying of cassumunar ginger (Plai). The dryer consists of a parabolic roof structure covered with polycarbonate plates on a concrete floor. The base of the dryer is a concrete floor with an area of 9$\times$12.4 m². Nine DC fans powered by three 50-W PV module were used to ventilate the dryer. The dryer was installed at Sa Kaeo province (13.49°N, 102.21°E), east of Thailand. To investigate the experimental performances, 300 kg of cassumunar ginger was dried in the solar greenhouse dryer. The drying air temperature varied from 30 °C to 55 °C during drying. The drying time in the solar greenhouse dryer was 1 day to dry cassumunar ginger from an initial moisture content of 90% (wb) to a final moisture content of 10% (wb), whereas it required 1 day of natural sun drying under similar conditions to reach a moisture content of 40% (wb). A system of partial differential equations describing heat and moisture transfer during drying of cassumunar ginger in the solar greenhouse dryer was developed and solved numerically using the finite difference method. Good agreement was found between experimental and simulated moisture contents.

本文介绍了温室太阳能干燥器的干燥性能，用于干燥木薯姜。干燥机由抛物线形屋顶结构组成，在水泥地面上覆盖有聚碳酸酯板。烘干机的底座是水泥地板，面积为9$\times$12.4米²。由三个50瓦PV模块供电的九个直流风扇为干燥机通风。该干燥机安装在泰国东部的Sa Kaeo省（北纬13.49°，东经102.21°）。为了研究实验性能，在日光温室干燥机中干燥了300公斤的木薯姜。在干燥过程中，干燥空气温度从30°C到55°C不等。在日光温室干燥机中，干燥木薯姜的时间为1天，从最初的水分含量为90％（wb）到最终水分含量为10％（wb），而在类似条件下需要1天的自然阳光干燥达到40％（wb）的水分含量。开发了一个描述微分方程组的系统，该系统描述了日光温室干燥器中木豆干燥过程中的热量和水分的传递，并使用有限差分法对其进行了数值求解。