Experimental study of a high pressure fogging system in naturally ventilated greenhouses

被引：22
|
作者：
Li, S. [1 ]
Willits, D. H. [1 ]
Yunker, C. A. [1 ]
机构：
[1] NC State Univ, Dept Biol & Agr Engn, Raleigh, NC 27695 USA
来源：
PROCEEDINGS OF THE INTERNATIONAL SYMPOSIUM ON GREENHOUSE COOLING | 2006年 / 719期
关键词：
greenhouses; natural ventilation; high pressure; fogging system;
D O I：
10.17660/ActaHortic.2006.719.44
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The effects of a high pressure (68 atm) fog system on air temperature, humidity, leaf temperature and transpiration rate as functions of spray rate, canopy density, vent configuration and outside weather conditions in naturally ventilated greenhouses were studied experimentally. Two canopy density and vent configuration treatments were investigated. The evaporation efficiency was derived from data and its dependence on environmental and fog operation conditions was studied. The revised cooling efficiency was shown to be a better index to characterize fogging systems, and its dependence on spray rate and ventilation rate was determined statistically.
引用
收藏
页码：393 / +
页数：3
相关论文
共 50 条
  • [21] Experimental study of pressure distribution on semi-circular greenhouses
    Chu, Chia-Ren
    Lin, Tan-Yi
    Yang, Chih-Kai
    Liu, Ming-I
    Journal of Taiwan Agricultural Engineering, 2016, 62 (03): : 63 - 73
  • [22] NUMERICAL SIMULATION OF VENTILATION EFFICIENCIES OF NATURALLY VENTILATED MULTI-SPAN GREENHOUSES IN KOREA
    Hong, S. -W.
    Lee, I. -B.
    Hwang, H. -S.
    Seo, I. -H.
    Bitog, J. P.
    Yoo, J. -I.
    Kim, K. -S.
    Lee, S. -H.
    Kim, K. -W.
    Yoon, N. -K.
    TRANSACTIONS OF THE ASABE, 2008, 51 (04): : 1417 - 1432
  • [23] Effect of screen mesh size on vertical temperature distribution in naturally ventilated tropical greenhouses
    Soni, P
    Salokhe, VM
    Tantau, HJ
    BIOSYSTEMS ENGINEERING, 2005, 92 (04) : 469 - 482
  • [24] Experimental study of the solar chimney effect in naturally ventilated BIPV cladding system under real operating condition
    Rai, Priyanka
    Chowdhury, Amartya
    SOLAR ENERGY, 2024, 278
  • [25] Cooling fan-ventilated greenhouses: A modelling study
    Willits, DH
    BIOSYSTEMS ENGINEERING, 2003, 84 (03) : 315 - 329
  • [26] Simulation of Fixed and Variable Fogging Rates in a Naturally Ventilated Greenhouse: Water and Energy Savings and Stability of Climate
    Villarreal-Guerrero, F.
    Kacira, M.
    Fitz-Rodriguez, E.
    Giacomelli, G. A.
    Kubota, C.
    Linker, R.
    Arbel, A.
    INTERNATIONAL SYMPOSIUM ON ADVANCED TECHNOLOGIES AND MANAGEMENT TOWARDS SUSTAINABLE GREENHOUSE ECOSYSTEMS: GREENSYS2011, 2012, 952 : 37 - 44
  • [27] Evaluation of structural characteristics of naturally ventilated multi-span greenhouses using computer simulation
    Lee, IB
    Short, TH
    Sase, S
    Okushima, L
    Qiu, GY
    JARQ-JAPAN AGRICULTURAL RESEARCH QUARTERLY, 2000, 34 (04): : 247 - 256
  • [28] Vertical microclimate heterogeneity and dew formation in semi-closed and naturally ventilated tomato greenhouses
    Jerszurki, Daniela
    Saadon, Tal
    Zhen, Jingbo
    Agam, Nurit
    Tas, Eran
    Rachmilevitch, Shimon
    Lazarovitch, Naftali
    SCIENTIA HORTICULTURAE, 2021, 288
  • [29] Pressure field and airflow at the opening of a naturally ventilated greenhouse
    Boulard, T
    Kittas, C
    Papadakis, G
    Mermier, M
    JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 1998, 71 (01): : 93 - 102
  • [30] Experimental evaluation of airflow in naturally ventilated active envelopes
    Saelens, D.
    Hens, H.
    Journal of Thermal Envelope and Building Science, 2001, 25 (02): : 101 - 127
12345