| 摘要: |
| 针对湿帘风机温室试验对通过湿帘后空气温度测量困难的问题,设计屏蔽送风式、屏蔽非送风式和非屏蔽式3种测量方法,通过试验对3种测量方式的准确性及误差因素进行分析。结果表明:屏蔽非送风式的测量结果受湿帘液滴附着影响较小,测量结果准确可靠;屏蔽送风式测量值较真实值小,误差范围为0.1~3.2 ℃;非屏蔽式测量方式容易受到外界环境因素的影响,误差范围-2.7~3.9 ℃,波动范围较大。 |
| 关键词: 温室 湿帘风机 温度 测量方法 |
| DOI：10.11841/j.issn.1007-4333.2011.01.019 |
| 投稿时间：2010-06-03 |
| 基金项目:国家科技支撑计划课题(2008BADA6B01); 沈阳市科技计划项目(1081198-3-00); 国家自然科学基金项目(31000921) |
|
| Methods for measuring air temperature in a padand fan cooling greenhouse |
|
WANG Rui, XU Hui, MA Jian, LI Tian-lai
|
| (College of Horticulture,Shenyang Agricultural University,Shenyang 110866,China) |
| Abstract: |
| During the operation of pad and fan system for greenhouse cooling,fog wafts appeared inside the greenhouse.If the fog adheres to a sensing part of a thermometer,measurement of air temperature through pad will decrease and cause errors.The study was conducted by three measurement methods which were non-aspirated thermocouple with shelter,aspirated psychrometer and bare thermocouple without the shelter.It was found that the result of the non-aspirated thermocouple with shelter provided the most accurate measurement values;the measurement result of the aspirated psychrometer was lower than the actual temperature and the error rang was 0.1-3.2 ℃;the measurement of the bare thermocouple was affected by environmental factors easily and the error rang was -2.7-3.9 ℃. |
| Key words: greenhouse pad and fan cooling system temperature measurement method |
