Research on photovoltaic water pumping system based on valve opening model

IF 7.1 2区工程技术 Q1 ENERGY & FUELS

Sustainable Energy Technologies and Assessments Pub Date : 2024-10-03 DOI:10.1016/j.seta.2024.104016

Hang Zhao , Delan Zhu , Nazarov Khudayberdi , Changxin Liu

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引用次数: 0

Abstract

Photovoltaic water pumping system (PVWPS) is an important way to use solar energy. In order to further improve the solar energy utilization rate of PVWPS, this study proposes a valve opening model, which solves the problem of more solar energy waste caused by fixed pipeline characteristics under different irradiation intensities. Firstly, the theoretical calculation formula of pipeline flow is deduced according to the balance relationship between photovoltaic energy supply and energy demand of water lifting pipeline in PVWPS, and its working principle is expounded. Finally, the function model of pipeline flow-valve opening-radiation intensity is derived from the cycle test of PVWPS, and the PVWPS with water lifting height of 10 m, 12 m and 14 m is verified by all-day test. Compared with the unregulated valve, the cumulative water extraction of the PVWPS with three water lifting heights after valve regulation is increased by 15.85 %, 18.06 % and 80.71 % respectively, indicating that the cumulative water extraction of the PVWPS can be effectively improved by adjusting the valve opening. This study provides a new idea for improving the utilization rate of solar energy in PVWPS.

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基于阀门开启模型的光伏水泵系统研究

光伏水泵系统（PVWPS）是利用太阳能的一种重要方式。为了进一步提高 PVWPS 的太阳能利用率，本研究提出了一种开阀模型，解决了不同辐照强度下固定管路特性造成太阳能浪费较多的问题。首先，根据 PVWPS 中光伏供能与提水管道需能的平衡关系，推导出管道流量的理论计算公式，并阐述了其工作原理。最后，根据 PVWPS 的循环试验推导出管道流量-阀门开度-辐射强度的函数模型，并对提水高度分别为 10 米、12 米和 14 米的 PVWPS 进行了全天候试验验证。与未调节阀门相比，调节阀门后三种扬水高度的 PVWPS 的累计取水量分别提高了 15.85 %、18.06 % 和 80.71 %，表明通过调节阀门开度可有效提高 PVWPS 的累计取水量。该研究为提高 PVWPS 太阳能利用率提供了新思路。

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来源期刊

Sustainable Energy Technologies and Assessments Energy-Renewable Energy, Sustainability and the Environment

CiteScore

12.70

自引率

12.50%

发文量

1091

期刊介绍： Encouraging a transition to a sustainable energy future is imperative for our world. Technologies that enable this shift in various sectors like transportation, heating, and power systems are of utmost importance. Sustainable Energy Technologies and Assessments welcomes papers focusing on a range of aspects and levels of technological advancements in energy generation and utilization. The aim is to reduce the negative environmental impact associated with energy production and consumption, spanning from laboratory experiments to real-world applications in the commercial sector.