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首页> 外文期刊>Building and Environment >Are the relative variation rates (RVRs) approximate in different cities for the same building with the same outer-window reform?
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Are the relative variation rates (RVRs) approximate in different cities for the same building with the same outer-window reform?

机译:对于具有相同外部窗口改革的同一建筑物,不同城市的相对变化率(RVR)是否近似?

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摘要

By analyzing and comparing hourly, monthly and classified cooling and heating energy consumption of Tampa and Guangzhou, it can be found that the reduction of heat transfer coefficient of outside window can obviously decrease annual heating need. Its effect is essentially similar to the reduction of outer-wall heat transfer coefficient. The reduction of outer-window heat transfer coefficient can significantly increase the heating or cooling RVRs of the hours without solar radiation (basic RVRs) and it can also increase the heating RVRs at the hours with solar radiation. However, it can just increase cooling RVRs at the hours with solar radiation limitedly. Only supplemented with restraining solar radiation effectively, it could raise the cooling RVRs significantly. Whatever any climatic conditions, the annual heating energy consumption is governed by the classification without solar radiation (> 80%) and annual cooling energy consumption is governed by the classification with solar radiation (> 90%). Therefore, in order to decrease heating energy consumption, the first choice is the improvement of envelope's thermal insulation performance while to decrease cooling need, the first measure is to restrain solar radiation and then supplemented with the improvement of envelope. It is shown by the research that under the same outer-window heat transfer coefficient (i.e., the same measure of outer-window thermal insulation is adopted for the same building), the heating RVRs are approximate and the cooling RVRs are also approximate in different cities. This paper proves at another angle the universalism of approximation of heating and cooling RVRs under different climatic conditions (or in different cities) for the same building with the same energy-efficient measure again.
机译:通过对坦帕和广州每小时,每月和分类的制冷和供暖能耗进行分析和比较,可以发现,减少外窗传热系数可以明显减少年度供暖需求。其作用基本上类似于减小外壁传热系数。外窗传热系数的降低可以显着增加无太阳辐射小时的加热或冷却RVR(基本RVR),也可以增加有太阳辐射小时的加热或冷却RVR。但是,它只能在太阳辐射有限的时间增加冷却的RVR。只有有效地抑制太阳辐射,才能显着提高冷却RVR。不论任何气候条件,年采暖能耗均由无太阳辐射的类别(> 80%)控制,而年制冷能耗由无太阳辐射的类别(> 90%)控制。因此,为了减少加热能量的消耗,首选是提高封套的绝热性能,同时减少制冷需求,首要措施是抑制太阳辐射,然后补充封套的改进。研究表明,在相同的外窗传热系数下(即同一建筑物采用相同的外窗绝热措施),不同情况下供热RVR近似,制冷RVR近似。城市。本文从另一个角度证明了采用相同的节能措施的同一建筑物在不同气候条件下(或在不同城市中)的加热和冷却RVR逼近的普遍性。

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