严寒地区高校宿舍热计量采暖节能调节模式的应用研究
发布时间：2018-11-22 18:26
【摘要】：高校宿舍建筑具有体量大,人员密集,寒暑假“空巢”、使用规律等特点,所以热计量改造节能潜力巨大。本文根据新疆严寒地区的供暖时间、室外温度变化情况及高校宿舍采暖用能特点,把整个采暖期划分四个气候阶段:初寒期、严寒期、值班期、末寒期,并提出三种在集中供热系统楼栋计量条件下高校宿舍采暖模式:固定模式,流量调节模式,分时调节模式。采用DesignBuilder能耗模拟软件对宿舍建筑以不同调节方式为变量来分析探讨各气候阶段的室内温度变化及能耗情况,获得宿舍热计量采暖最优模拟调节组合方案,同时结合新疆严寒地区所在高校石河子大学热计量改造工程实例,根据模拟所得采暖最优调节组合方案进行现场试验,对实时监测采暖建筑的热力入口供回水温度、流量情况及各典型宿舍的室内温度等数据进行分析,并通过模拟结果和实测结果对比分析,论证热计量采暖最优调节组合方案的可行性。模拟研究结果表明:热计量采暖的宿舍在初寒期采用流量调节模式(阀门开启度70%),节能率可以达到34.2%;严寒期采用分时调节模式,可以在供暖期间满足室内温度和舒适度的要求,在停暖期间室内采暖温度降幅3℃~5℃,节能率达35.32%;值班期采用流量调节模式(阀门开启度20%)时,可以满足室内无人状态最低温度10℃的要求,采暖节能率达57.52%;末寒期采用流量调节模式(阀门开启度60%)采暖室内温度较稳定,基本满足室内设计温度20℃的采暖要求,节能率达到31.97%;初寒期和末寒期的供水温度按照50℃运行,室内温度和舒适度均达到了设计要求。试验结果表明:各测试房间室内温度全天的变化趋势基本相同,在采用流量调节模式采暖时,宿舍内部温度稳定性较好,且均能保证室内舒适度要求;采用分时调节模式采暖时,宿舍室内的温度波动较大,室内温度日较差最大为4.59℃。模拟与试验对比结果表明:典型宿舍在实测和模拟条件下流量调节模式与分时调节模式室温的日波动趋势基本一致,模拟与实测的误差产生是由于模拟条件下忽略了供暖设备的蓄热量及建筑的热惰性等因素,导致模拟条件下室内温度变化速率较大。在供暖期间能够满足宿舍室内温度和舒适度要求的前提下,严寒地区高校宿舍热计量采暖节能调节模式最优调节组合方案为:初寒期采用流量调节模式(阀门开启度70%),严寒期采用分时调节模式,值班期采用流量调节模式(阀门开启度20%),末寒期采用流量调节模式(阀门开启度60%)采暖。
[Abstract]:The dormitory building in colleges and universities has the characteristics of large volume, dense personnel, "empty nest" in winter and summer vacation, and so on, so the energy saving potential of heat metering reform is huge. According to the heating time, the change of outdoor temperature and the characteristics of heating energy used in college dormitory, this paper divides the whole heating period into four climatic stages: the initial cold period, the duty period, the final cold period, and the final cold period. Three kinds of heating modes of college dormitory under the condition of building metering of central heating system are put forward: fixed mode, flow regulation mode and time-sharing regulation mode. Using DesignBuilder energy consumption simulation software to analyze and discuss the indoor temperature change and energy consumption in different climate stages of dormitory buildings with different adjustment modes, the optimal simulation and adjustment combination scheme of dormitory heat metering heating is obtained. At the same time, combined with the example of heat metering and reconstruction project of Shihezi University, a university located in severe cold area of Xinjiang, according to the optimal heating adjustment combination scheme obtained from simulation, the field test is carried out to monitor the temperature of the heating inlet of the heating building in real time. The data of flow rate and indoor temperature of typical dormitory are analyzed, and the feasibility of optimal adjustment combination scheme of heat metering heating is proved by comparing and analyzing the simulation results and the measured results. The simulation results show that the heat metering heating dormitory adopts flow regulation mode (valve opening degree 70%) in the initial cold period, and the energy saving rate can reach 34.2g; In the cold period, the time-sharing adjustment mode can meet the requirements of indoor temperature and comfort during the heating period. The indoor heating temperature decreases by 3 鈩，
本文编号：2350188
[Abstract]:The dormitory building in colleges and universities has the characteristics of large volume, dense personnel, "empty nest" in winter and summer vacation, and so on, so the energy saving potential of heat metering reform is huge. According to the heating time, the change of outdoor temperature and the characteristics of heating energy used in college dormitory, this paper divides the whole heating period into four climatic stages: the initial cold period, the duty period, the final cold period, and the final cold period. Three kinds of heating modes of college dormitory under the condition of building metering of central heating system are put forward: fixed mode, flow regulation mode and time-sharing regulation mode. Using DesignBuilder energy consumption simulation software to analyze and discuss the indoor temperature change and energy consumption in different climate stages of dormitory buildings with different adjustment modes, the optimal simulation and adjustment combination scheme of dormitory heat metering heating is obtained. At the same time, combined with the example of heat metering and reconstruction project of Shihezi University, a university located in severe cold area of Xinjiang, according to the optimal heating adjustment combination scheme obtained from simulation, the field test is carried out to monitor the temperature of the heating inlet of the heating building in real time. The data of flow rate and indoor temperature of typical dormitory are analyzed, and the feasibility of optimal adjustment combination scheme of heat metering heating is proved by comparing and analyzing the simulation results and the measured results. The simulation results show that the heat metering heating dormitory adopts flow regulation mode (valve opening degree 70%) in the initial cold period, and the energy saving rate can reach 34.2g; In the cold period, the time-sharing adjustment mode can meet the requirements of indoor temperature and comfort during the heating period. The indoor heating temperature decreases by 3 鈩，
本文编号：2350188
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