Abstract:In order to investigate the impacts of configuration parameters on the energy consumption of small-scale sprinkler irrigation machine, an orthogonal design of four factors on three levels conside-ring effect of interactions was employed. The influences of pipe diameter, sprinkler spacing, number of sprinklers and working pressure of sprinkler head together with the interactions between them on the energy consumption of the sprinkler irrigation machine typed 4.4CP-45 were analyzed based on the energy consumption calculation model. A multivariate regression model for the computation of energy consumption was established. The results indicate that the impact of working pressure of the sprinkler head comes first, followed by that of pipe diameter, and the impact of number of sprinklers is also obvious. The impact of sprinkler spacing is manifested in the interactions with the other factors. Among four major interaction items, the interaction between sprinkler spacing and number of sprinklers is the most notable, interactions between pipe diameter and number of sprinklers, sprinkler spacing and pipe diameter, sprinkler spacing and working pressure of sprinkler head come in order. Therefore, the interactions between factors cannot be neglected in the configuration of sprinkler systems. Based on the comparison analysis, the optimal combination of parameters for configuration of the sprinkler machine is obtained, with the parameters of sprinkler spacing 15m, pipe diameter 80mm, number of sprinklers 9, working pressure of the sprinkler head 0.25MPa. The specific energy consumption of the system is 4.53 kW·h/(mm·hm2), 22.6% lower than that before optimization and 1.0% lower than that without consideration of interactions between factors, and the configuration parameters are comparatively more acceptable to the customers in practice. The multiple correlation coefficient and coefficient of determination of the multivariate regression model is 0.88 and 0.774 respectively, thus the model is reliable. The discussion may provide a reference for the design and performance evaluation of sprinkler systems.
涂琴, 李红, 王新坤, 胡斌, 汤攀. 轻小型喷灌机组能耗分析与多元回归模型[J]. 排灌机械工程学报, 2014, 32(2): 162-166.
Tu Qin, Li Hong, Wang Xinkun, Hu Bin, Tang Pan. Analysis and multivariate regression model for energy consumption of small-scale sprinkler irrigation machine. Journal of Drainage and Irrigation Machinery Engin, 2014, 32(2): 162-166.
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