Development of Stirling Pump mechanism for Irrigation in remote rural farms

Saeed Mohammed Wazed, B. Hughes, Dominic O’Connor, J. Calautit
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Abstract

Inadequate supply of safe water, the requirement of food exports, Low GDP creates a scenario where 26% of the population in the Sub-Saharan Africa suffer from food insecurity. Cultivation of food locally is necessary to drive the cost of food down. This can be done using the abundant groundwater source in the region, however, the energy cost of harvesting the water supply is very high and hence not presently utilised. While solar PV technology is readily available, PV solutions are much too expensive for small scale rural farmers. This research aims at developing a solar thermal powered Stirling pump that can be produced locally, using local resources to reduce irrigation costs and provide income, food and energy security in the region, by promoting independent farming through small-scale farms. In order to develop the Stirling pump, a Low Temperature Differential (LTD) Stirling engine has been modelled in 3D, simulated and investigated with the help of Computational Fluid Dynamics with ANSYS 16.1 software. The Analysis is aimed at obtaining a true representation of the pressure, temperature and compression ratio that dictate the functioning of a Gamma type Stirling engine. This model developed can then be modified and improved upon to further boost the performance of the Stirling Engine to be integrated with a water pumping system to extract ground water for irrigation purposes.
偏远农村农田灌溉斯特林泵机构的研制
安全用水供应不足、粮食出口需求、国内生产总值低造成了撒哈拉以南非洲26%的人口遭受粮食不安全的局面。在当地种植粮食对于降低粮食成本是必要的。这可以利用该地区丰富的地下水资源来实现,但是,收集供水的能源成本非常高,因此目前没有得到利用。虽然太阳能光伏技术很容易获得,但光伏解决方案对小规模农村农民来说过于昂贵。这项研究旨在开发一种太阳能热驱动的斯特林泵,这种泵可以在当地生产,利用当地资源减少灌溉成本,并通过小规模农场促进独立农业,为该地区提供收入、粮食和能源安全。为了研制斯特林泵,利用ANSYS 16.1计算流体动力学软件对一台低温差分斯特林发动机进行了三维建模、仿真和研究。分析的目的是获得压力,温度和压缩比的真实表示,这决定了伽玛型斯特林发动机的功能。开发的模型可以进行修改和改进,以进一步提高斯特林发动机的性能,将其与抽水系统集成,以提取地下水用于灌溉目的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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