摘要
中国"2+26"城市禁煤供暖,猪场迫切需要找到可以替代燃煤、满足供暖需求的供暖方式。为了解空气源热泵在猪舍地暖的供暖效果,选择北京猪舍,配置空气源热泵设备,进行供暖期间保育猪舍热环境效果试验。结果表明:试验期间,室外最低和最高温度分别为-11.0和12.1℃;在地暖供暖猪舍中,地面温度与供水温度、室外温度都呈正比例相关关系,与供暖距离呈反比例线性关系;在系统供水温度范围为30.0～41.0℃时,猪舍无猪单元距离分水器最近(24 m)测点和最远(60 m)测点地面温度为19.1～28.6℃;实际供水温度平均值较设定温度降低1.8～4.0℃;距离分水器最近(24 m)测点地面温度较实际系统供水温度下降8.3～13.1℃;距离分水器最远(60 m)测点较最近测点(24 m)地面温度下降0.5～1.8℃。无猪时,0.3 m高温度较地面温度降低5.0℃;距离地面0.3 m以上不同高度温度变化不明显。对于北京保育猪舍适宜采用空气源热泵地暖供暖,推荐蓄水罐设定温度宜为43～32℃,实际供水温度宜为40.6～29.9℃。
With the importance of environmental protection,“2+26” cities in China have been banned from coal heating, and pig farms urgently need to find a low-cost heating way of energy saving and emission reduction. Air source heat pump is a kind of energy saving device by inputting a small amount of highgrade energy (electric energy) to achieve the goal that the heat flows from low-grade thermal energy (air) to high -grade thermal energy (such as water, oil, etc.). As a clean energy, air can be selected as a kind of heating energy but air source heat pump can also be affected by outdoor temperature and related technical factors. In order to understand heating effect of air source heat pump for floor heating of pig house, one nursery pig house in Beijing was selected to be the experimental pig house. The experimental pig house was 42 m long and 9.3 m wide and floor heating area was 42 m×5.7 m. Two air source heat pumps (5P) were installed to the heating system of the nursery pig house with floor heating, and the thermal environment indexes of the heating system were monitored and analyzed. There were 12 pipes for supply water and other 12 pipes for return water in the heating floor. The test was divided into two periods, the equipment performance monitoring period and the pig house thermal environment effect test period. Equipment performance monitoring period: November 20^th, 2016-April 16^th, 2017. The pig house thermal environment effect test period was divided into two stages. The first stage (January 3^rd, 2017-January 8^th, 2017): pig house with pig test (two units). The second stage (January 9^th, 2017-January 20^th, 2017): pig house with no pig test (empty pig unit - unit 2). The results showed that the outdoor minimum and maximum temperatures were -11.0 and 12.1 ℃ during the test period, respectively. In the floor heating pig house, there was a positive linear correlation between the ground temperature and the supply water temperature, the correlation between the ground temperature and the outdoor temperat
作者
王美芝
易路
刘继军
杨乐乐
陈昭辉
吴中红
Wang Meizhi;Yi Lu;Liu Jijun;Yang Lele;Chen Zhaohui;Wu Zhonghong(College of Animal Science, China Agricultural University, Beijing 100193, China;Dezhou Canxin Air Conditioning Equipment Co., Ltd., Dezhou 253000, China)
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2019年第4期203-210,共8页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家重点研发计划资助:畜禽养殖智能装备与信息化技术研发(2018YFD0500700)
生猪产业技术体系北京市创新团队项目(BAIC02-2018)
关键词
热泵
温度
保育猪舍
地暖供暖
热环境
供水温度
heat pump
temperature
nursery pig house
floor heating
thermal environment
supply water temperature
