Performance Analysis And Applied Research On Photovoltaic Solar Greenhouse

In order to explore the practical application capability and development potential ofphotovoltaic power generation system in agricultural facilities, the summer luminousenvironment and tomato growth condition in18kW photovoltaic solar greenhouse in Ansai, thewinter thermal environment and luminous environment in2kW photovoltaic solar greenhousein Yangling had been continuous texted. The system generation capacity and total solar radiationhad been monitored as well. This paper also set Yangling greenhouse as an example to introducedesign scheme. Compared with environment data in the plastic film solar greenhouse andanalyzed the environment data inner photovoltaic solar greenhouse, following conclusion couldbe obtained:1） In the layout of one amorphous silicon cell component followed one PC board, thetransmittance of total radiation was38.7%and photosynthetic photon flux density was38.9%within two hours before and after the noon on the sunny day, measured by the total solarradiation senso（r0.3-3μm）and photosynthetic photon flux density sensor（400-700nm）,30.3%and17.6%less than those of solar greenhouse with plastic film. The transmittance of totalradiation was34.6%and photosynthetic photon flux density was31.1%,15.8%and9.4%lessthan those of solar greenhouse with plastic film in the cloudy days. The photovoltaic solargreenhouse prevented3949.8kJ/m2from getting inside than that of solar greenhouse withplastic film in sunny days. Plant height of tomatoes under two kinds of greenhouse havesignificant difference in early growth period, plant height in Photovoltaic solar greenhouse>solar greenhouse with plastic film, stem diameter conversely, but there are no significantdifferences in fruit output and quality.2）The average transmittance of photovoltaic solar greenhouse was33%in January,11.6%lower than that of the plastic film greenhouse. The largest illumination value in photovoltaicsolar greenhouse on clear day was26927lux, and cloudy day was6968lux, which wererespectively6061lux and3177lux lower than those of the plastic film greenhouse. Theaverage transmittance of the PC board was51%on cloudy day. There were no significancebetween the PC board and inclined plane consisting of PC board with amorphous silicon cellcomponent, the range of the plane’s average transmittance variation was34.7%-41.7%.3) The air temperature inner photovoltaic solar greenhouse decreased with increasingheight. In the same weather conditions, average temperature under PC board was higher than that of amorphous silicon cell component; the lowest temperature at0.5m was higher than both1.0m and1.5m; the soil temperature at30cm was higher than15cm on continuous cloudydays and sunny day on the contrary.4) The generate power of the photovoltaic generation system was0.309kW per kilowatt inJanuary; the maximum system daily generating capacity value was9.544kWh and the minimumvalue was1.414kWh; system generating capacity and total solar radiation presented asignificant positive correlation, the correlation coefficient in the sunny day was greater than thatof a cloudy day.