高原铁路站房地板辐射系统的分区供暖效果

郑嘉诚; 余涛; 雷波; 陈辰; 吕瑞欣

doi:10.3969/j.issn.0258-2724.20220306

高原铁路站房地板辐射系统的分区供暖效果

doi: 10.3969/j.issn.0258-2724.20220306

郑嘉诚^1,,
余涛^1, ,,
雷波¹,
陈辰²,
吕瑞欣¹

1.
西南交通大学机械工程学院，四川成都 610031
2.
成都市建筑设计研究院有限公司，四川成都 610041

基金项目: 国家自然科学基金（51708453）；四川省自然科学基金（2022NSFSC1944）

详细信息

作者简介:
郑嘉诚（1994—），男，博士研究生，研究方向为建筑节能与可再生能源利用技术，E-mail：jczheng@my.swjtu.edu.cn

通讯作者:
余涛（1987—），男，副教授，研究方向为建筑节能与可再生能源利用技术，E-mail：yutao073@swjtu.edu.cn

中图分类号: TU832.1
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- 被引次数: 0
出版历程
- 收稿日期: 2022-04-27
- 修回日期: 2022-07-21
- 网络出版日期: 2023-06-28
- 刊出日期: 2022-12-01

Partition Heating Performance of Radiant Floor System in Railway Stations on Plateau

ZHENG Jiacheng^1
,,
YU Tao^{1
, ,},
LEI Bo¹,
CHEN Chen²,
LYU Ruixin¹

1.
School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
2.
Chengdu Architectural Design & Research Institute Co., Ltd., Chengdu 610041, China

摘要

摘要:
为了解决高原铁路站房部分区域在强太阳辐射的影响下出现过热、地板辐射供暖系统能耗浪费的问题，以某高原铁路车站为研究对象，根据站房内太阳照射情况对地板辐射系统提出了分区供暖方案；利用建筑能耗模拟软件Energyplus对该铁路站房进行模拟分析，对比了地板辐射系统分区前后站房内的热环境和系统供暖量. 结果表明：地板辐射系统采用统一的设计及运行控制方案供暖时，站房内太阳直射影响区的平均操作温度在日间最高可达27 ℃，与非直射影响区之间的温差超过5 ℃；在地板辐射系统分区供暖时，直射影响区的平均操作温度最高为26 ℃，室内温度分布更为均匀，局部过热现象得到缓解；在保证站房热舒适性的前提下，地板辐射系统的分区供暖方案能够使直射影响区整个供暖季的供暖量降低38.2%.
- 铁路站房 /
- 太阳辐射 /
- 地板辐射供暖 /
- 室内热环境 /
- 系统供暖量
Abstract:
In order to solve the local overheating and the energy waste of radiant floor heating systems in railway stations on the plateau with intensive solar radiation, a railway station on the plateau was studied, and a partition heating scheme of the radiant floor system was proposed according to the solar radiation distribution in the station. The building energy consumption simulation software, namely Energyplus was used to simulate the station, and both the indoor thermal environment and the heating capacity of the radiant floor system with or without the partition scheme were compared. Results show that when the radiant floor system adopts a unified design and operation control scheme for heating, the average operative temperature in the irradiated zone can reach up to 27 ℃ during the daytime, and the temperature difference with the unirradiated zone is more than 5 ℃. When the radiant floor system uses the partition heating scheme, the maximum operative temperature in the irradiated zone is 26 ℃. The indoor temperature distribution is more uniform, and the local overheating is alleviated. Under the premise of ensuring the thermal comfort of the station, the partition heating scheme of the radiant floor system can reduce the heating capacity in the irradiated zone during the heating season by 38.2%.
- railway station /
- solar radiation /
- radiant floor heating /
- indoor thermal environment /
- heating capacity of system

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图 1 车站平面示意（单位：m）

Figure 1. Floor plans of railway station (unit: m)

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图 2 地板辐射系统结构

Figure 2. Structure of radiant floor system

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图 3 铁路站房Energyplus模型

Figure 3. Energyplus model of railway station

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图 4 地板辐射系统实验平台

Figure 4. Experimental platform for radiant floor system

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图 5 Energyplus模拟结果与实验数据对比

Figure 5. Comparison of Energyplus simulation results with experimental data

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图 6 地板表面累积太阳辐射量

Figure 6. Cumulative solar radiation on floor surface

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图 7 候车厅一层的分区方案

Figure 7. Partition scheme on the 1st floor of waiting hall

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图 8 研究时间段室外干球温度与太阳辐射强度

Figure 8. Outdoor dry bulb temperature and solar radiation intensity during studied period

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图 9 地板表面的平均太阳辐射强度

Figure 9. Average solar radiation intensity on floor surface

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图 10 地板表面温度及室内操作温度变化情况

Figure 10. Variations of floor surface temperatures and indoor operative temperatures

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图 11 直射影响区与非直射影响区之间的温差

Figure 11. Temperature differences between irradiated zone and unirradiated zone

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图 12 供暖季2个区域的供暖量

Figure 12. Heating capacities in two zones during heating season

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图 13 车站候车厅第一层直射影响区的系统供暖量

Figure 13. Heating capacities of irradiated zones on the 1st floor of waiting halls

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表 1 地板各层材料的热物性参数

Table 1. Thermal properties of floor materials

各层材料	厚度/ mm	热导率 / (W·m⁻¹·K⁻¹)	密度 / (kg·m⁻³)	热容 / (J·kg⁻¹·K⁻¹)
大理石	30	3.84	2600	750
水泥砂浆	20	0.93	1800	840
轻质混凝土	70	1.84	2344	800
挤塑板	50	0.03	35	1380
混凝土楼板	120	1.55	2700	837

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表 2 该铁路车站候车厅内的热扰参数

Table 2. Thermal disturbances in waiting hall of railway station

热扰	取值	设置区域
人员	2000 人	人员活动区
灯光	10 W/m²	非人员活动区
设备	15 W/m²	人员活动区
渗透风	1 次/h	所有区域
新风	10 m³/（h·人）	人员活动区

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表 3 各地区供暖季平均室外干球温度及累积太阳辐射

Table 3. Outdoor dry bulb temperature and cumulative solar radiation in several regions during heating season

地点	平均室外干球温度/℃	累积太阳辐射/（kWh·m⁻²）
拉萨	0.8	749.2
林芝	2.7	632.5
昌都	−0.2	624.4
理塘	−3.6	493.6
甘孜	−1.6	601.2
马尔康	1.5	418.9
松潘	−1.7	381.8

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表 4 不同地区车站的候车厅直射影响区在分区供暖方案下的供暖量减少情况

Table 4. Reduction in heating capacities of irradiated zones of waiting halls in different regions

地点	供暖减少量/（kWh·m⁻²）	供暖减少百分比/%
拉萨	15.8	38.2
林芝	12.4	33.1
昌都	12.5	24.8
理塘	8.9	13.7
甘孜	12.6	22.1
马尔康	7.2	14.1
松潘	6.2	9.0

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