粮食平房仓太阳能光伏-地源热泵供冷系统仿真研究与试验  

Simulation study and test on the solar photovoltaic-ground source heat pump cooling system for grain warehouse

作　　者：闫喜龙 陈雁[1] 戴诗渝 杜潇 赵志文 崔伟华[1] YAN Xilong;CHEN Yan;DAI Shiyu;DU Xiao;ZHAO Zhiwen;CUI Weihua(College of Civil Engineering,Henan University of Technology,Zhengzhou 45001,China)

机构地区：[1]河南工业大学土木工程学院,郑州450001

出　　处：《农业工程学报》2024年第18期42-50,共9页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金项目(12072107)。

摘　　要：为解决粮食平房仓通风能耗大、储粮成本高的问题,该研究提出太阳能-地源热泵供冷系统,研究太阳能光伏-地源热泵供冷系统在粮食平房仓建筑中的可行性以及节能效果,以实现“零能耗”和“零排放”绿色储粮。基于粮食平房仓实际尺寸,建立了空气源热泵与太阳能光伏-地源热泵供冷系统仿真模型,并通过与仓房实测数据的对比进行了模型验证,从运行性能、光电适配性、经济性、节能以及环保效益等方面对供冷系统进行了分析。结果表明:系统运行1 a后性能系数(coefficient of performance,COP)最大值为4.76,最小值3.3;运行10 a后COP最大值为3.96,最小值3.07;系统年实际发电量与库区用电量之比为192%~270%;投资回收期为7.8 a;与传统空气源热泵系统相比,太阳能-地源热泵供冷系统节能率达59%,研究结果可为粮食平房仓供冷系统优化提供理论依据和设计参考。High energy consumption and operating costs have affected the development of green and efficient granary warehouses.In order to promote energy saving and emission reduction in the reconstruction of granaries,this paper proposes a special solar photovoltaic-ground source heat pump cooling system for grain warehouses.The study investigates the feasibility and energy-saving effects of this combined system in grain warehouses,aiming to achieve"zero energy consumption"and"zero emissions"for green storage.Bungalow warehouses are typically single-story buildings widely used in grain reservoir,characterised by large roof area and spacious room between building rows.These features facilitate installing both underground heat exchangers and solar photovoltaic panels.Compared with residential buildings,adquate space can enable the solar photovoltaic-ground source heat pump system to integrate more well with warehouse buildings,and provide more cooling and power capacity.In summer,the electricity generated by photovoltaic panels is primarily consumed by the ground source heat pume for grain warehouse cooling.Then,the electricity is transmitted to living and office buildings in the grain reservoir,meeting the lighting requirements.Finally,excess power is sold to the State Grid.During other seasons when cooling is not required,the generated electricity first supplies the living and office buildings,and extra power is sold to the State Grid,too.Therefore,operating costs can be reduced through the surplus electricity sale.To maximize the combined advantages of solar and geothermal energy technologies in low-temperature grain storage,it is essential to conduct thorough research and design focused on the function and structure characteristics of warehouse buildings.This study aims to achieve deeper energy savings in storage application with current technologies.Simulation software was used to analyze the operation characteristics of the proposed system.Firstly,according to the actual size and working conditions of a grain warehouse

关 键 词：光伏 太阳能 粮食平房仓 太阳能-地源热泵供冷系统 低温储粮 

分 类 号：TB69[一般工业技术—制冷工程]