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• Quality of strawberry was improved by solar energy adjusting temperature and light. • Strawberry grew better when the PV modules occupied 25.9% roof of greenhouse. • The suitable light range for strawberry under the shade of PV module was obtained. • Solar combined air source heat pump provides suitable heating for strawberry. Strawberry production is greatly affected by environmental factors, especially temperature and light. A solar greenhouse with opaque photovoltaic (OPV) modules and a solar combined air source heat pump system was built for strawberry production. The aim of this study was to assess the impact of differences in both temperature and light factors caused by OPV modules and solar heating on strawberry growth and quality in a constructed greenhouse. The 'Jingzangxiang' strawberry was selected and planted in the greenhouse. The indoor temperature with the heating system was 5.3–7.3 °C higher than the ambient temperature at the coldest period in the city of Kunming. At noon, the chlorophyll content of the shaded strawberry plants was 1.3 times higher than that of the unshaded plants in sunny weather, and the average shaded photosynthetically active radiation (PAR) was 230 μmol·m−2·s−1 in the greenhouse, where 25.9% of the roof was covered with OPV modules. Under this shading treatment, the optimum light range of PAR for the 'Jingzangxiang' strawberry was 387–437 μmol·m−2·s−1, and the optimum temperature range during the daytime was 20.5–27.4 °C. The largest single strawberry fruit weighed 33.9 g, and the soluble solids content of the shaded strawberry fruit was 16.4%, which was higher than that of the unshaded strawberry samples. Furthermore, the yield of the shaded samples was 1.2 times that of the unshaded samples. In summary, strawberry plants shaded by OPV modules were superior to unshaded strawberry plants in terms of growth, quality and yield. This research provides experimental support and information on the optimal temperature and light ranges for the growth of the 'Jingzangxiang' strawberry in solar greenhouse. [ABSTRACT FROM AUTHOR]

The static ice refrigeration air conditioning system (SIRACS) driven by household distributed photovoltaic energy system (HDPES) was proposed and the energy conversion as well as the transmission performance were investigated by combining the theoretical calculation with experimental test. Results revealed that the system could be operated stably and continuously during three typical weather conditions (sunny, cloudy and light rainy) with an average photoelectric conversion efficiency of 11.76% and an average ice production of 52.56 kg. This system could continuously and stably serve user for 4 h during night. The models were verified to be reasonable and the simulated results were reliable. Meanwhile, the system average energy efficiency η was 7.65%. The performance analysis results showed that the ice making efficiency of the refrigerator was 50.19%, which was mainly responsible for the low energy efficiency. Therefore, to improve the refrigeration performance some optimization strategies were recommended and proposed in this paper. [ABSTRACT FROM AUTHOR]