Evaluation of the Effect of Self-propelled Atomizing Cooling Machine for the Back Wall in Sunlight Greenhouse

doi:10.6048/j.issn.1001-4330.2022.04.028

Abstract

Abstract:

【Objective】 To study the variation law of temperature and humidity in horizontal and vertical direction of solar greenhouses in different operation modes under the condition of high temperature in summer.This result provides theoretical support for the efficient operation of the summer atomization cooling machine, which can help to solve the problem of high temperature and low humidity in the summer production of solar greenhouses.【Method】 The self-propelled atomization machine integrated cooling, spraying pesticides and fertilizer was used, the running time was 4, 8, 12 minutes, and the interval time was 20,40 and 60 minutes, respectively. A total of 9 operation modes were used to evaluate the cooling effect under the condition of high temperature on sunny days in summer.【Result】 The best operating modes was running 12 minuteswith an interval of 60 minutes in the morning, running 8 minutes with an interval of 20 minutes at noontime, and running 12 minutes with an interval of 20 minutes in the afternoon. The best atomization cooling effect was found at 3 meters in the horizontal direction, the air temperature reduced on average of 1.3℃, and air humidity increased on a average of 7.6%. Meanwhile, the best cooling effect was detected at 2.5 meters in the vertical direction and the air temperature reduced on average of 2.3℃, and air humidity increased on a average of 11%. 【Conclusion】 T Compared with the control greenhouse, the self-propelled atomization cooling machine on the back wall of the solar greenhouse operates in 12-60, 8-20, and 12-20 operating modes in the morning, noon, and afternoon respectively, which can have a cooling effect in the summer production of the solar greenhouse.

Key words: solar greenhouse; summer cooling; humidification effect; atomization cooling machine

摘要：

【目的】研究日光温室后墙自走式雾化降温机在夏季高温情况下,不同运行模式上、中、下午温室内水平和垂直方向温湿度变化规律,为夏季雾化降温机高效运行提供理论支撑。【方法】利用自主研发的设施悬挂自走式雾化降温、喷药、喷肥一体装置,设计雾化降温机运行时间分别为4、8、12 min,间隔时间分别为20、40、60 min,总计9种运行模式,在夏季晴天高温条件下开展降温效果评价试验。【结果】最佳运行模式分别为上午运行12 min,间隔60 min;中午运行8 min,间隔20 min;下午运行12 min,间隔20 min。水平方向3 m处雾化降温效果最好,平均降温1.3℃,增湿7.6%;垂直方向2.5 m处的降温效果最好,可降温2.3℃,增湿11%。【结论】 日光温室后墙自走式雾化降温机上午、中午、下午分别进行12-60、8-20、12-20运行模式,能够为日光温室越夏生产起到良好的降温效果。

关键词: 日光温室, 夏季降温, 增湿效果, 雾化降温机

CLC Number:

MA Yongjie, WANG Xingyi, HAN Congying, LIN Yuhong, MA Hui, ZHANG Xueyan. Evaluation of the Effect of Self-propelled Atomizing Cooling Machine for the Back Wall in Sunlight Greenhouse[J]. Xinjiang Agricultural Sciences, 2022, 59(4): 1016-1024.

马永杰, 王星怡, 韩聪颖, 蔺玉红, 马慧, 张雪艳. 日光温室后墙自走式雾化降温机夏季降温效果评价[J]. 新疆农业科学, 2022, 59(4): 1016-1024.

Figures/Tables 12

Fig.1 Three-dimensional view of the experimental greenhouse

Fig.2 Schematic diagram of greenhouse test area design and temperature and humidity sensor distribution

Fig.3 Real thing of automization cooling machine

Fig. 4 Change of average temperature and humidity in atomization cooling and control regions

Fig.5 Cooling and humidifying effects of different operation modes in the morning

Fig.6 Cooling and humidifying effects of different operation modes at noon

Fig.7 Cooling and humidifying effects of different operation modes in the afternoon

Fig. 8 Changes of temperature and humidity in the horizontal level in automization cooling and control regions

Fig.9 Changes of temperature and humidity in the vertical level between the in atomization and control regions

Fig.10 Cooling and humidifying effect at 12-60 am

Fig.11 Cooling and humidifying effect at 8-20 am

Fig.12 Cooling and humidifying effect at 12-20 am

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