Browse > Article
http://dx.doi.org/10.12791/KSBEC.2016.25.4.308

Analysis of the Outdoor Design Conditions for Greenhouse Heating and Cooling Systems in Korea  

Nam, Sang-Woon (Department of Agricultural and Rural Engineering, Chungnam National University)
Shin, Hyun-Ho (Department of Agricultural and Rural Engineering, Chungnam National University)
Publication Information
Journal of Bio-Environment Control / v.25, no.4, 2016 , pp. 308-319 More about this Journal
Abstract
In order to set the outdoor weather conditions to be applied to the design standard of the greenhouse heating and cooling system, outdoor air temperature and heating degree-hour for heating design, dry bulb temperature, wet bulb temperature and solar irradiance for cooling design were analyzed and presented. For every region in Korea, we used thirty years from 1981 to 2010 hourly weather data for analysis, which is the current standard of climatological normal provided by KMA. Since the use of standard weather data is limited, design weather conditions were obtained using the entire weather data for 30 years, and the average value of the entire data period was presented as a design standard. The design weather data with exceedance probability of 1, 2.5, and 5% were analyzed by the TAC method, and we presented the distribution map with exceedance probability of 1% for heating and 2.5% for cooling which are recommended by design standards. The changes of maximum heating load, seasonal heating load and maximum cooling load were examined by regions, exceedance probabilities, and setpoint temperatures. The proposed outdoor design conditions can be used not only directly for the greenhouse heating and cooling design, but also for the reinforcement of heating and cooling facilities and the establishment of energy saving measures. Recently, due to the climate change, sweltering heat in summer and abnormal temperature in winter are occurring frequently, so we need to analyze weather data periodically and revise the design standard at least every 10 years cycle.
Keywords
design outdoor temperature; exceedance probability; heating degree-hour; setpoint temperature; solar irradiance;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
1 Yoon, J.H. 2003. Domestic and international status of standard weather data for evaluation of building energy performance. Magazine of the SAREK 32(8): 7-14 (in Korean).
2 ASABE. 2008. Standard: Heating, ventilating and cooling greenhouses, ANSI/ASAE EP406.4. American Society of Agricultural and Biological Engineers.
3 ASHRAE. 2005, 2013. ASHRAE Handbook Fundamentals. American Society of Heating, Refrigerating and Air-Conditioning Engineers.
4 JGHA. 2007. Handbook of protected horticulture 5th edition. Japan Greenhouse Horticulture Association (in Japanese).
5 Kim, D.C., S.H. Kim, J.S. Seo, S.G. Lee and J.S. Geum. 1996. Development of the standard computer software and weather data for cooling and heating load calculation. Ministry of Commerce and Industry. p.115-142 (in Korean).
6 Kim, M.K., S.G. Lee, W.M. Seo, and J.E. Son. 1997. Design standards for greenhouse environment. Rural Development Corporation (in Korean).
7 KMA. 2013. Weather data(1981-2010). Korea Meteorological Administration.
8 KSES. 2013. Korean Standard Weather Data. The Korean Solar Energy Society.
9 Kwon, Y.S., Y.B. Lee and S.G. Park. 1984. Studies on the establishment of safety standard for protected cultivation environment. Horticultural Experimental Station Research Report: 287-333 (in Korean).
10 Lee, S.G. 1985. Analysis of the heating degree hour for greenhouses. Journal of the Korean Society of Agricultural Engineers 27(3): 85-96 (in Korean).
11 Nam, S.W., H.H. Shin, and D.U. Seo. 2014a. Comparative analysis of weather data for heating and cooling load calculation in greenhouse environmental design. Protected Horticulture and Plant Factory. 23(3):174-180 (in Korean).   DOI
12 Lindley, J.A. and J.H. Whitaker. 1996. Agricultural buildings and structures. ASAE, Michigan, USA.
13 Mihara, Y., 1978, Computation formula for greenhouse heating degree hour with consideration for sunshine, Journal of Agricultural Meteorology 34(2): 83-85.   DOI
14 Nam, S.W., D.U. Seo, and H.H. Shin. 2015. Empirical analysis on the cooling load and evaporation efficiency of fogging system in greenhouses. Protected Horticulture and Plant Factory. 24(3):147-152 (in Korean).   DOI
15 Nam, S.W., H.H. Shin, and D.U. Seo. 2014b. Comparative analysis of accumulated temperature for seasonal heating load calculation in greenhouses. Protected Horticulture and Plant Factory. 23(3):192-198 (in Korean).   DOI
16 Nam, S.W. and H.H. Shin. 2015. Development of a method to estimate the seasonal heating load for plastic greenhouses. Journal of the Korean Society of Agricultural Engineers 57(5): 37-42 (in Korean).
17 Shin, H.H. and S.W. Nam. 2015. Validation of load calculation method for greenhouse heating design and analysis of the influence of infiltration loss and ground heat exchange. Kor. J. Hort. Sci. Technol. 33(5): 647-657 (in Korean).
18 SAREK. 2011. Handbook of facilities engineering. Vol. 2 Airconditioning. The Society of Air-Conditioning and Refrigerating Engineers of Korea. p.1-8 (in Korean).