装配式配种妊娠猪舍冬季保温与能耗特征  

Thermal insulation and energy consumption characteristics of an assembled piggery for breeding and gestation in winter

作　　者：王美芝[1] 李斯旋 王华 阳林芳 张校军 游筱彤 吴中红[1] 刘继军[1] Wang Meizhi;Li Sixuan;Wang Hua;Yang Linfang;Zhang Xiaojun;You Xiaotong;Wu Zhonghong;Liu Jijun(College of Animal Science,China Agricultural University,Beijing 100193,China;Guangdong Yihao Food Co.,Ltd.,Guangzhou 510620,China)

机构地区：[1]中国农业大学动物科技学院,北京100193 [2]广东壹号食品股份有限公司,广州510620

出　　处：《农业工程学报》2022年第2期241-249,共9页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家重点研发计划(2018YFD0500700);生猪产业技术体系北京市创新团队项目(BAIC02-2021)。

摘　　要：为了解规模化猪场装配式配种妊娠猪舍冬季保温以及能源消耗情况,通过对试验猪舍围护结构传热系数、墙体内表面温度以及耗热量理论计算与现场试验监测相结合的方法,对猪舍围护结构热工性能与猪舍能耗特征进行分析。结果表明:试验猪舍复合保温墙体主体部位和外保温砖墙墙体的理论计算值分别为0.31和0.23 W/(m^(2)·K),实测传热系数分别为0.39和0.69W/(m^(2)·K),复合保温墙体钢梁部位传热系数的实测值为0.97W/(m^(2)·K)。在试验期间舍外平均温度下,墙体各部位不会产生结露现象,而围护结构彼此的连接处、屋架下弦和钢柱与天棚连接部位则易发生冷凝情况。试验期间,猪舍理论总耗热量和理论+实测总耗热量的平均值分别为10.73和11.84 W/m^(2),该类猪舍围护结构耗热量平均值小于通风耗热量平均值的20%。所需供热量和实际天然气供热量的每日平均值分别为0.28和0.39 kW·h/m^(2)。该研究可为猪舍设计的节能保温方案提供理论依据。Heat loss can normally occur from the building envelope(wall,roof,glass)and ventilation system of a piggery in winter,due primarily to the large temperature difference between the inside and outside.A heating system can be widely used to recover the heat loss,inevitably leading to a higher energy demand during large-scale pig farming.Alternatively,it is highly required to meet the specific performance of thermal insulation for the envelope,in order to reduce the energy consumption for the better efficiency of environmental control in the piggery.A large number of pig farms have been built to rapidly resume pig production in China at present.Among them,a newly-developed assembled structure was normally adopted,where the ceiling and upper half wall are mostly made of the composite insulation with the profiled steel plates on both inside and outside,and with the stuffed thermal insulation materials in the middle,whereas,the lower half wall is in brick with the outer insulation board.However,there is little research on the thermal insulation effect of such assembled structure so far.This study aims to clarify the heat preservation,thermal performance,and energy consumption characteristics of an assembled piggery for the breeding and gestation in large-scale pig farms in winter.A field test was also conducted in a pig farm in Chengde City,Hebei Province,China.Some environmental parameters were measured in the piggery,including the inner and outer temperature,relative humidity,carbon dioxide concentration,and ventilation rate.As such,the thermal performance of the envelope was evaluated by the theoretical calculation and in situ test.Meanwhile,the heat transfer coefficients were determined for each part of the building envelope,according to the thermal conductivity of the materials and structure design of assembled piggery.The temperature and heat flux were measured at each measuring point on the inner and outer surfaces of the wall.The measured values were then used to calculate the heat transfer coefficient for each

关 键 词：通风 冷凝 保温 猪舍 装配式建筑 围护结构 热工性能 能耗 

分 类 号：S828[农业科学—畜牧学] S210[农业科学—畜牧兽医]