研究课题
未来智慧
供热供冷系统
Smart District Heating and Cooling System
for the Future
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关键字
Keywords
# 可再生能源 Renewable Energy
# 气候变化 Climate Change
# 建筑改造 Building Renovation
# 双向系统 Bi-directional system
# 未来区域能源系统
Future District Energy System
# 热能储存 Thermal Energy Storage
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课题摘要
Abstract
未来的区域能源系统将包括高温供冷系统和低温供热系统。现有的研究对于这些未来的转变大多基于现有视角，例如当前的负荷情况和能源价格。而对于未来各项挑战下能源系统的转变的关注仍然较少。
本研究针对4种典型类型进行分析，包括集中供热供冷系统、超低温供热系统、双向第五代供热供冷系统和完全独立系统。本文评估了这些系统的经济、技术和环境效益，考虑到未来在能源价格、负荷特征及可再生能源等方面的变化。
结论表明未来持续增加的供冷需求，将会给双向第五代供热供冷系统带来巨大的经济优势。在供给侧，随着能源价格的波动变化，昂贵的电力价格将会使得5GDHC和ULTDHC系统具有更具优势的经济性。本文所提出的评估方法也可以应用在更多的实际情况中。
District energy systems are about to shift towards closer temperature configurations, i.e. low-temperature district heating, and high-temperature district cooling. The challenges and benefits of these transitions are mostly analyzed from a perspective of current energy demand and supply scenarios while the influence of future changes in these domains remains unknown.
Centralized district heating and cooling (DHC), ultra-low temperature district heating (ULTDH), and bi-directional fifth-generation 5GDHC systems were assessed from technical, economic, and environmental aspects. Moreover, the applications of thermal energy storage (TES) and their roles in future DHC systems were also investigated. The assessment was done by a generalized methodology framework, integrating the future changes, multiple operation scenarios modelings, and system design optimizations.
Results suggest that in the future low-energy building stock and the increased cooling demand makes the 5GDHC system the most economically attractive choice. On the supply side, with a 50% share of wind power in the future national grid, the electricity prices can make 5GDHC and ULTDHC either cost-saving or more expensive compared to the central DHC system dependent on if nuclear plants are decommissioned or not.
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课题导师
Tutor
Mr. Zhang
清华大学建筑技术系 本科&硕士
瑞典查尔姆斯理工大学 博士在读
研究领域
新能源/智慧能源/清洁能源
绿色环保/可持续
智能建筑/碳中和
...
学术成就
第一作者SCI文章6篇
申请发明专利1项
实用新型专利2项
清华大学优秀硕士论文
清华大学科技创新优秀奖学金
...
多篇第一作者SCI文章
发表于《Energy Conversion and Management》
多篇第一作者SCI文章
发表于《Applied Thermal Engineering》
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