检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:王亚男 王洪彬[3] 冯曼 高玉红 郭建军[1] 邱殿锐 于滨 WANG Yanan;WANG Hongbin;FENG Man;GAO Yuhong;GUO Jianjun;QIU Dianrui;YU Bin(Chengde Academy of Agriculture and Forestry Sciences,Chengde 067000,China;College of Animal Science and Technology,Hebei Agricuhural University,Baoding 071000,China;Agricultural and Pastoral Bureau of Weichang County,Chengde 067000,China)
机构地区:[1]承德市农林科学院,河北承德067000 [2]河北农业大学动物科技学院,河北保定071000 [3]围场县农牧局,河北承德067000
出 处:《畜牧与兽医》2019年第2期26-33,共8页Animal Husbandry & Veterinary Medicine
基 金:承德市科学技术发展与计划项目(201602B032)
摘 要:为了探讨河北北部山区猪舍不同围护结构的夏季隔热效果,通过检测3个时间段(早上6:00—9:00,中午12:00—15:00,晚上17:00—20:00)不同墙体结构育肥猪舍的墙体内表面温度以及舍内外温湿度的连续变化,以期寻找隔热效果好的围护材料。其中舍Ⅰ为单层彩钢板屋顶+24 mm清水砖墙+3 cm泡沫保温板,舍Ⅱ为单层彩钢板屋顶+24 mm清水砖墙。结果显示:舍Ⅰ和舍Ⅱ的温湿度连续变化曲线基本一致,温度均表现为中午高、早晚低的变化规律,舍内最高温度均超过育肥猪对高温的限制要求;而相对湿度表现为中午低、早晚高的规律。早上舍Ⅰ和舍Ⅱ温度分别比舍外高4. 74和5. 52℃,差异均达极显著水平(P<0. 01);中午和晚上2种猪舍的温湿度之间以及各舍的内外温度之间均未表现出显著性差异(P>0. 05)。另外,2种猪舍的墙体内表面温度在不同时间段的变化规律基本一致,12:00—18:00温度最高,6:00—7:00温度最低,舍Ⅰ四面墙体的内表面最高温度明显低于舍Ⅱ,但均未超过围护结构夏季隔热计算温度最高值36. 3℃,符合猪舍墙体的夏季隔热设计要求。结果表明:"保温板+砖墙"结构的夏季隔热性能好于没有保温板的砖墙,本试验结果可为河北北部地区猪舍的标准化建设和改造提供数据支撑。The present study was to investigate the heat insulation of different styles of enclosure structures in pig houses in north Hebei Province in summer. The internal surface temperature( Ta) of walls of different structures in three time periods( 6: 00-8: 00 in the morning,12: 00-15: 00 at noon,and 17: 00-20: 00 in the evening) as well as indoor and outdoor Ta and relative humidity( RH) over 24 h were measured so as to determine appropriate construction materials for pig house building. House 1 was roofed with a single layer of colored steel sheet and walled with 24 mm thick bricks and 3 cm EPS board;and House 2 was roofed with a single layer of colored steel sheet and walled with 24 mm thick bricks only,The results showed that the curves of Ta and RH in House 1 were consistent with those in House 2. The indoor Ta in both houses was high at noon and low in the morning and evening,while the indoor RH was low at noon and high in the morning and evening. Moreover,the highest temperature exceeded the requirement for fattening pigs,and the morning Ta in House 1 and House 2 was4. 74 and 5. 52 ℃ higher thant the outdoor Ta( P< 0. 01),respectively. However,the indoor Ta between the two houses at noon or in the evening showed no difference( P>0. 05),and no significant difference between the indoor and outdoor Ta in the individual house,either.Besides,the internal surface Ta of walls in both houses was consistent in different time periods,being high from 12: 00 to 18: 00 and low from 6: 00 to 7: 00. Also,the highest Ta’ s on the internal surface of the four walls were obviously lower in House 1 than those in House2;but,the surface temperature in both houses met the requirement for heat insolation of enclosure structure in summer,which did not exceed the highest value of 36. 3 ℃. In conclusion,the thermal-insulating performance of enclosure structure composed of brick and thermal-insulating board was better than that of brick alone in summer. This result would provide helpful information for standard construction and ref
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.4