青海省主被动结合式太阳能暖房热性能研究
发布时间：2018-12-07 10:24
【摘要】：随着我国经济的不断发展,城市化率逐年提高,能源消耗呈快速上升的趋势。据统计,目前建筑能耗约占社会总能耗的三分之一左右。因此,开发更为有效的建筑节能手段势在必行。而太阳能作为可再生资源的一种,将其与建筑结合,实现太阳能建筑一体化是一种有效的建筑节能技术手段。青海省是我国太阳能丰富地区。本文基于将太阳能与该地区农房内的炕体进行有效结合,形成了太阳能炕主动式采暖系统,并与集热蓄热墙与直接受益窗太阳能被动式采暖技术耦合,构成了新型的太阳能采暖系统。论文从太阳能建筑应用出发,针对主被动结合式太阳能暖房进行实验测试、模拟研究与理论计算,主要工作内容如下:首先,针对太阳能炕主动式采暖技术与集热蓄热墙被动式采暖技术在太阳能暖房中的应用提出了包括太阳能炕单独夜间运行、太阳能炕夜间运行与集热蓄热墙白天运行耦合、太阳能炕全天运行与集热蓄热墙白天运行耦合、太阳能炕单独全天运行与集热蓄热墙单独白天运行等五种模式的测试方案,并对五种模式下的测试结果包括室内平均温度、炕面温度等进行了分析与对比。结果表明在太阳能炕全天运行与集热蓄热墙白天运行的耦合模式下,室内采暖效果最好,在室外平均温度为-13.39℃的情况下,实验房全天平均温度为5.86℃,最高温度能达到14.04℃,炕面温度最高为34.20℃,与对照间相比,全天平均温度高8.35℃。测试的结果为太阳能暖房理论计算提供参考依据。其次,建立了相应的实验房数值模拟模型,对太阳能炕全天运行与集热蓄热墙白天运行耦合模式进行模拟,根据实测数据验证了数值模拟模型的正确性。然后对太阳能炕单独运行、集热蓄热墙单独运行及二者耦合模式进行数值模拟,通过温度场模拟结果分析太阳能炕系统与集热蓄热墙系统对室内热环境的影响。再次,通过模拟可知室内热环境受太阳能炕系统与集热蓄热墙系统影响较大,并对两者传热特性进行了理论分析。结合分析结果与实验数据可知太阳能炕对室内的辐射传热略多于对流传热量。集热蓄热墙系统对室内的传热受室外辐射影响较大。综合各模式下太阳能炕与集热蓄热墙传热量计算结果可知,最优模式即太阳能炕全天运行与集热蓄热墙白天运行耦合模式下,测试工况下通过太阳能采暖能节省标煤2.725kg,可减少排放二氧化碳6.732kg,二氧化硫0.055kg,粉尘0.027kg,节约电费8.37元,能实现太阳房节能率64.2%。
[Abstract]:With the development of economy, the rate of urbanization is increasing year by year, and the energy consumption is increasing rapidly. According to statistics, building energy consumption accounts for about 1/3 of the total social energy consumption. Therefore, it is imperative to develop more effective means of building energy conservation. As a kind of renewable resources, solar energy is an effective technical means of building energy saving by combining it with architecture and realizing the integration of solar energy building. Qinghai Province is rich in solar energy in China. Based on the effective combination of solar energy with the Kang body in the agricultural house in this area, the active heating system of solar Kang is formed, and the passive solar heating technology of collector heat storage wall and direct beneficial window is coupled. A new type of solar heating system is formed. Based on the application of solar energy building, this paper carries out the experimental test, simulation and theoretical calculation for the active and passive solar heating house. The main work is as follows: first of all, Aiming at the application of active heating technology of solar Kang and passive heating technology of collecting heat storage wall in solar heating house, the paper puts forward that the solar Kang can run alone at night, the night operation of solar Kang and the daytime operation of heat storage wall are coupled. The test schemes of five modes, namely, the all-day operation of solar Kang and the daytime operation of collecting heat storage wall, the all-day operation of solar Kang alone and the daytime operation of collecting heat storage wall, and the test results of five modes including the indoor average temperature are also given. The temperature of Kang surface was analyzed and compared. The results show that the indoor heating effect is the best under the coupling mode of the solar Kang all-day operation and the daytime operation of the heat storage wall. The indoor heating effect is the best under the condition that the outdoor average temperature is -13.39 鈩，
本文编号：2367055
[Abstract]:With the development of economy, the rate of urbanization is increasing year by year, and the energy consumption is increasing rapidly. According to statistics, building energy consumption accounts for about 1/3 of the total social energy consumption. Therefore, it is imperative to develop more effective means of building energy conservation. As a kind of renewable resources, solar energy is an effective technical means of building energy saving by combining it with architecture and realizing the integration of solar energy building. Qinghai Province is rich in solar energy in China. Based on the effective combination of solar energy with the Kang body in the agricultural house in this area, the active heating system of solar Kang is formed, and the passive solar heating technology of collector heat storage wall and direct beneficial window is coupled. A new type of solar heating system is formed. Based on the application of solar energy building, this paper carries out the experimental test, simulation and theoretical calculation for the active and passive solar heating house. The main work is as follows: first of all, Aiming at the application of active heating technology of solar Kang and passive heating technology of collecting heat storage wall in solar heating house, the paper puts forward that the solar Kang can run alone at night, the night operation of solar Kang and the daytime operation of heat storage wall are coupled. The test schemes of five modes, namely, the all-day operation of solar Kang and the daytime operation of collecting heat storage wall, the all-day operation of solar Kang alone and the daytime operation of collecting heat storage wall, and the test results of five modes including the indoor average temperature are also given. The temperature of Kang surface was analyzed and compared. The results show that the indoor heating effect is the best under the coupling mode of the solar Kang all-day operation and the daytime operation of the heat storage wall. The indoor heating effect is the best under the condition that the outdoor average temperature is -13.39 鈩，
本文编号：2367055
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