STUDY ON INFLUENCE OF VALVE OPENING ON PHOTOVOLTAIC PUMP WATER LIFTING SYSTEM

Zhao Hang; Zhu Delan; Zhang Tingning; Li Zhao; Nazarov Khudayberdi; Liu Changxin

doi:10.19912/j.0254-0096.tynxb.2023-1461

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (1) : 624-631. DOI: 10.19912/j.0254-0096.tynxb.2023-1461

STUDY ON INFLUENCE OF VALVE OPENING ON PHOTOVOLTAIC PUMP WATER LIFTING SYSTEM

Zhao Hang^1,2, Zhu Delan^1,2, Zhang Tingning^1,2, Li Zhao^1,2, Nazarov Khudayberdi³, Liu Changxin³

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Abstract

Aiming at the problem of more solar energy waste caused by the fixed pipeline feature of photovoltaic water pumping system under different irradiancy, this study explores the variation law of photovoltaic water pump flow and head under different irradiancy and different valve openings. According to the theory of energy supply and demand balance of photovoltaic energy supply and water lifting pipeline, the mathematical relationship between irradiancy, pipeline flow and valve opening is established, and the maximum flow valve opening model is obtained by derivation, and verified by experiments. The results show that with the increase of irradiancy from small to large, the flow and head of photovoltaic water pump increase at the same time. The maximum flow valve opening model is used to adjust the valve opening of photovoltaic pumping system with a pumping height of 14 m under different irradiancy. With the maximum instantaneous flow as the goal, compared with the full opening of the valve, the regulation water pumping volume increases by 79.66%, indicating that the water pumping volume of the photovoltaic water pumping system can be effectively improved by adjusting the valve opening.

Key words

solar energy / photovoltaic power / flow rate / value opening / cumulative water extraction

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Zhao Hang, Zhu Delan, Zhang Tingning, Li Zhao, Nazarov Khudayberdi, Liu Changxin. STUDY ON INFLUENCE OF VALVE OPENING ON PHOTOVOLTAIC PUMP WATER LIFTING SYSTEM[J]. Acta Energiae Solaris Sinica. 2025, 46(1): 624-631 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1461

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