Research Publications

Cached 171

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    Xiaolei Yuan, Yumin Liang, Yiqun Pan, Risto Kosonen, Yu Wang. International Journal of Green Energy, 2021-12

    ABSTRACT | This paper proposed and introduced an innovative concept of step-like server placement in data centers (DCs), replacing the traditional servers placed on the same vertical plane with step-like server placement. The studied simplified DC model was established based on an actual operating DC. The feasibility and reliability of the simplified model was validated by on-site experimental ...

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    Yan Lyu, Yiqun Pan, Xiaolei Yuan, Mingya Zhu, Zhizhong Huang, Risto Kosonen. Buildings, 2021-11

    ABSTRACT | During the design stage of an HVAC (heating, ventilation, and air conditioning) system in a construction project, designers must decide on the most workable design scheme for the plant room in the building based on the evaluation of multiple aspects related to system performance that need to be considered, such as energy efficiency, economic effectiveness, etc. To solve this problem,...

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    Shiyao Li, Yiqun Pan, Zhizhong Huang. Building Simulation, 2021-11

    ABSTRACT | The heating, ventilation, and air-conditioning (HVAC) systems account for about half of the building energy consumption. The optimization methodology access to optimal control strategies of chiller plant has always been of great concern as it significantly contributes to the energy use of the whole HVAC system. Given that conventional centralized optimization methods relying on a central...

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    Chien-Fei Chen, Marilena De Simone, Selin Yilmaz, Xiaojing Xu, Zhe Wang, Tianzhen Hong, Yiqun Pan. Building and Environment, 2021-10

    ABSTRACT | Occupants' adaptive strategies play an important role in the energy consumption of office buildings. Previous research has mostly focused on the adaptive strategies triggered by occupants' indoor discomfort; however, it is crucial to understand if specific adaptive strategies are linked to occupants' energy-saving intentions. This study explores the relationships among employees’ heuris...

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    Haijing Liu, Yiqun Pan, Yikun Yang, Zhizhong Huang. Building and Environment, 2021-09

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    Heating energy-saving potentials in HVAC system of swimming halls: A review

    ABSTRACT | Swimming halls (SHs), which belong to special building sector, are easily overlooked as significant energy users and carbon producers. The demands of heat (e.g., pool water heating, domestic hot water, space and supply air heating) and electricity (e.g., Saunas, pool pumping and ventilation) in SHs are both very high, which indicates the high energy saving potentials. This paper comprehe...

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    Xiaolei Yuan, Leo Lindroos, Juha Jokisalo, Risto Kosonen, Yiqun Pan, Hui Jin. Energy and Buildings, 2021-05

    ABSTRACT | In this paper, the demand response of district heating for swimming pools and pool space air is proposed and applied in a swimming hall in Finland. Swimming halls have significant heat demands e.g., domestic hot water supply, space heating and pool water heating, and thus have much large heat storage capacity for the realization of district-heat based demand response. A dynamic building ...

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    Mingya Zhu, Yiqun Pan, Zejun Wu, Jiantong Xie, Zhizhong Huang, Risto Kosonen. Building and Environment, 2021-02

    ABSTRACT | Thermal comfort is one of the most important factors of indoor environment quality, affecting occupants’ well-being and work efficiency. With the advent of smart control technology, personalized and intelligent air conditioners have been promoted for occupant-centric intelligent air-conditioning control. Based on commonly used air-conditioning (AC), this paper quantitatively describes t...

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    Xiaolei Yuan, Xuetao Zhou, Yiqun Pan, Risto Kosonen, Hao Cai, Yang Gao, Yu Wang. Energy and Buildings, 2021-01

    ABSTRACT | With the advent of big data era, data centers (DCs) related energy use accounts for approximately 3% of the global electric power consumption. As the augmentation of data-processing performance and thermal density in DCs, its energy use will undoubtedly continuously burst. Meanwhile, the potential safety hazards, caused by IT equipment local overheating, threaten the safe operation and r...

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    Yan Lyu, Yiqun Pan, Tao Yang, Yuming Li, Zhizhong Huang, Risto Kosonen. Journal of Building Engineering, 2020-12

    ABSTRACT | The calibration of building energy model is a vital part of the whole modelling process. To improve the efficiency of this work, an automation procedure has recently been introduced to the calibration process, but no generic approach has yet received the consensus of the whole community at present. The main reason is that a purely mathematics-based, automated calibration lacks physical e...

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    Xiaolei Yuan, Leo Lindroos, Juha Jokisalo, Risto Kosonen, Yiqun Pan. Energy and Buildings, 2020-11

    ABSTRACT | Ice and swimming halls annually consume lots of energy and produce significant amount of potential waste heat in Finland. In this paper, utilization of four possible waste heat sources (ice refrigeration, dehumidification of air, Gray water and exhaust air) is studied by simulating combined energy system of ice and swimming halls locating in Helsinki. Four cases were simulated including ...

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    Shiyao Li, Yiqun Pan, Peng Xu, Nan Zhang. Journal of Cleaner Production, 2020-10

    ABSTRACT | With the increasing penetration of distributed energy resources, integrating renewable generations into energy systems is a significant trend for smart and cleaner energy systems. To this end, advanced energy management has become of great importance. Conventional control of distributed energy resources relies on a central operator, which is responsible for the energy flow from producers...

    秦冰月, 潘毅群, 于利丽, 黄治钟. 建筑节能, 2017-02

    ABSTRACT | 以上海地区的气象参数作为夏热冬冷气候区的典型代表, 提出"H/S——建筑形状系数"并作为建筑形状分类指标, 对办公建筑分类建模, 采用能耗模拟软件eQUEST进行能耗估算,并用SPSS软件做逐步线性回归分析, 探究建筑总面积、建筑形态与单位建筑面积年能耗(EUI)之间的数学关系。研究表明: 1单位建筑面积能耗(EUI)随建筑总面积的增加而减少。2总面积越小的单体建筑, 面积变化对能耗影响越大。3越"瘦高"的建筑, 建筑能耗越大

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    Xiaolei Yuan, Yiqun Pan, Jianrong Yang, Weitong Wang, Zhizhong Huang. Building Simulation, 2020-03

    ABSTRACT | Supervisory control can be used to optimize the HVAC system operation and achieve building energy conservation, while reinforcement learning (RL) is considered as a promising model-free supervisory control method. In this paper, we apply RL algorithm to the operation optimization of air-conditioning (AC) system and propose an innovative RL-based model-free control strategy combining rule...

    侯丹琳, 潘毅群, 黄治钟. 建筑节能, 2017-03

    ABSTRACT | 暖通空调系统运行效果的好坏依赖于控制系统。传统的控制过程中PID参数需要专业人员根据工程经验进行设定, 往往控制精度不够, 鲁棒性差。而基于系统传递函数的PID控制虽然表现性能良好, 但实际使用过程中往往由于不能得到准确的传递函数而受到限制。采用粒子群优化算法对所研究的暖通空调对象进行模型参数的辨识。在辨识过程中, 首先将空调系统中涉及的某个被控对象的传递函数设置为二阶滞后模型, 然后采用粒子群优化算法对模型参数进行在线辨识。通过将目标函数设置为最小化模型输出与系统实际输出的偏差值而得到最优参数解, 从而得到被控对象的传递函数。通过2个算例说明该方法过程简单、结果准确, 且具有一定的鲁棒性。

    ABSTRACT | 良好的住宅小区风热环境可以加快室外热量的消散和污染物排放, 保证居民的健康和舒适。影响小区风热环境的因素主要有小区布局、建筑形态及下垫面形式等。以青岛市一个实际小区为案例采用数值模拟的方法分析小区冬夏季行人高度的风场及温度场分布, 评估设计的合理性, 找出小区内风热环境不满足要求的区域。通过调整小区内建筑的布局和改变下垫面形式等方法改进小区的设计, 并对改进后的方案进行模拟计算。通过模拟结果的对比发现: 1合理布局建筑位置, 在小区内形成风道可有效改善风环境; 2改变下垫面热物性, 提高地面材料的反射率, 能够降低地面附近的空气温度和体感温度, 改善小区热环境。

    ABSTRACT | 本文设计并实现了一种适用于个人空间的结合人员偏好的空调自学习控制方法。它是一种以人员为中心和面向应用的方法,能自主学习和适应不同人员的热偏好,提供不同人员所需的室内环境条件,且能很好地与现有的空调控制方式相结合,无需增加额外的传感器,利于推广和应用。本文构建了基于人员历史空调使用行为的人员偏好分类方法,建立了基于朴素贝叶斯分类器和神经网络模型的人员偏好预测模型来刻画和学习人员的温度偏好和...

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    Xiaolei Yuan, Xinjie Xu, Jinxiang Liu, Yiqun Pan, Risto Kosonen, Yang Gao. Building and Environment, 2020-01

    ABSTRACT | This paper introduced and analyzed a new concept where an under-floor air supply (UFAD) system with cold aisle containment (CAC) is replaced by a new in-rack UFAD system called an in-rack cold aisle (IR-CA). The IR-CA system is analyzed using CFD simulation, and on-site measurement was carried out to validate the feasibility and reliability of simulation models. The study is divided into...

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    Jiantong Xie, Yiqun Pan, Wenqi Jia, Lei Xu, Zhizhong Huang. Applied Energy, 2019-12

    ABSTRACT | Occupant behavior (OB) has been recognized as a significant factor that influences the energy consumed by the occupants of a building. For buildings equipped with distributed air-conditioning systems, the stochastic influences of occupants are particularly salient. This paper presents a method for simulating the occupancy and air-conditioning usage; it integrates the OB model with a modi...

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    Qiujian Wang, Yiqun Pan, Yangyang Fu, Zhizhong Huang, Wangda Zuo, Peng Xu. Building Simulation, 2019-04

    ABSTRACT | Two main tasks of commissioning an air-side HVAC system are to verify the fan capacity and to balance the air loop. Simulations can be of assistance to these two tasks. However, the models used in the simulation will inevitably have some uncertainties, especially for the models of the pressure loss components. This paper proposes to use uncertainty analysis to obtain the adjustment instr...

    潘媛. 硕士论文, 2019-03

    ABSTRACT | 多样性的人员用能行为是决定建筑能耗的关键因素,科学评估人行为对系统性能、建筑用能的影响,对于能耗模拟技术在实际工程中的应用具有重要意义。由于人员空调使用行为具有随机性、差异性等特点,造成行为的定量化描述较为困难,尤其是多人办公室空间中,空调使用行为还受到不同角色人员之间的交互影响,目前尚未有合适的模型进行准确描述。针对能耗模拟中对多人行为刻画不够准确、未考虑办公建筑人员之间交互影响的用能...

    林美顺, 潘毅群. 建筑节能, 2016-03

    ABSTRACT | 区域建筑群负荷预测是能源站系统容量配置的基础, 在研究区域建筑负荷预测方法的基础上, 运用软件模拟与情景分析相结合的方法, 预测上海某商务区能源站供能区域建筑群空调冷、热负荷, 进而预测能源站的空调负荷, 并对入住率进行情景分析, 计算不同入住率下的系统容量, 为能源站系统容量配置提供基础数据。

    ABSTRACT | Heat rejection from air conditioners not only contribute the outside environment surrounding the buildings but also increase the cooling loads. Based on it, A novel methodology to fully-scale amend the weather data in summer season is proposed, as a means of quantizing the results. Two software, EnergyPlus and Fluent were employed in this study. Three variables were inputted into Fluent ...

    ABSTRACT | This study proposes a hybrid space filling design method combining the high-dimensional clustering method with the existing statistical sampling method to design the variables and cases for a BPD of office buildings. With this method, we can build a BPD only including about 10,000 cases but having the capability of representing the high-dimensional space constructed by 16 building energy...

    Yuan Pan, Yiqun Pan, Jiantong Xie, Zhizhong Huang. Asim 2018, 2018-12

    ABSTRACT | Due to the diversity and randomness of heating and cooling usage behavior in buildings, occupant behavior can lead to great variation in building energy consumption. In the study of occupant behavior modeling, the characteristic parameters obtained from limited case studies are difficult to fully reflect the diversity and distribution characters of occupant behavior of large population. ...

    Qiujian Wang, Yiqun Pan, Zhizhong Huang, Wangda Zuo, Peng Xu. Asim 2018, 2018-12

    ABSTRACT | PID controllers are still prevailing in building environmental control due to its easy deployment and acceptable performance. However, it is common in practice that the PID controllers are not tuned properly because of the limited time for commissioning and the inexperienced practitioners. This study proposes a simulation-based method to provide instructions for on-site tuning. Due to th...

    ABSTRACT | 本文着眼于对全楼尺度的人员在室率以及人员空调使用行为进行研究,并不研究单个个体的行为及行为驱动因素。人员在室率的数据通过动作探测进行获取,将记录数据处理为全楼逐时在室率并进行分析。人员对空调的调节行为监测数据通过室内温控器进行记录并上传,通过对数据的处理后得到人员对设定温度及室内温度选择的分布规律。 在对人行为进行模拟时,为体现出人行为的随机性和多样性,本文采用马尔可夫链及蒙特卡洛随机模...

    ABSTRACT | 基于强化学习的控制是一种数据驱动的控制方法,具有免模型、目标导向的特点。本文提出将强化学习算法应用在空调系统运行优化中。 首先本文对目前的强化学习算法进行梳理,选择拟合 Q 迭代算法作为主要应用算法。针对强化学习算法特点与空调系统运行优化的实际需求,将强化学习控制器在空调系统运行优化中的应用过程分为准备阶段、初始阶段、探索阶段和运行阶段,并描述了各阶段完整的算法流程。之后,本文通过具体案例...

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    Qiujian Wang, Yiqun Pan, Mingya Zhu, Zhizhong Huang, Peng Xu. Journal of Building Performance Simulation, 2018-01

    ABSTRACT | Most of the local pressure loss coefficient (LPLC) models for duct fittings used in heating, ventilation and air conditioning (HVAC) air-side system transient simulations are simplified. The LPLCs are defined as having a constant value at the rated flow condition or as having a polynomial function of the flow ratio (or velocity ratio). To determine the influence of these simplifications,...

    吕岩, 潘毅群, 黄治钟. CCHVAC 2017, 2017-12

    ABSTRACT | 目前,对于公共建筑的集中式空调系统来说,其规模一般是比较大的。这也就意味着,储存在其水系统的冷冻水之中的冷量是相当可观的,具有利用的价值。在系统优化运行控制的层面来看,对该部分冷量的利用,相当于对空调水系统的运行进行优化的过程中,考察其自身的蓄能特性。在考虑到蓄能作用基础上的空调水系统优化算法,可以实现对应于峰谷电价的错峰填谷、提前关闭系统以利用剩余冷量等更广泛的优化排期功能。本研究以...

    王尉同, 潘毅群, 黄治钟. CCHVAC 2017, 2017-12

    ABSTRACT | 空调系统运行优化是建筑节能的重要组成部分。本文将强化学习算法应用在空调系统运行优化中。首先建立空调系统运行优化任务的马尔科夫决策过程模型,接下来确立规则对探索空间进行进一步缩减,使探索过程尽可能满足系统设备运行和被控区域舒适度的约束,最后应用 Q-Learning 算法探索学习不断改进控制策略。通过仿真案例对算法进行了测试。采用动态仿真软件 TRNSYS 和 MATLAB 进行联合仿真,对被控区域送风量进行了优化,...

    ABSTRACT | 随着人民生活水平的日益提高,我国酒店业市场呈现显著增长趋势。从国家能源安全和节能减排工作的角度出发,酒店类建筑面积的日益增长所带来的能源消耗和碳排放问题日益凸显;从酒店提高自身效益的角度出发,设备节能则是扩大利润的有效途径。本文根据酒店客房实测数据,确定了酒店客房人员在室率时间表;根据调研数据,建立了不同气候区不同客房尺寸的典型客房模型,并开发软件根据用户选择的节能措施对模型进行修改,模...

    杨陶, 潘毅群, 谢建彤, 黄治钟. CCHVAC 2017, 2017-12

    ABSTRACT | 由于建筑能耗模型与实际数据间存在信息差,其模拟结果和实测值之间常出现误差,且此误差有时甚至超过 100%。误差的存在大大降低了模型的可信度,也削弱了其在建筑运行评价中发挥的作用。因此在建模的过程中,需要对模型进行校验,以降低模拟值和实际值之间的误差,增加可靠性。本文提出一种基于符号有向图的建筑能耗模型校验方法,将人工校验的知识和逻辑模块化,为人工智能大趋势下结合人工和自动校验双边优势的途径发...

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    Qiujian Wang, Yiqun Pan, Mingya Zhu, Zhizhong Huang, Wei Tian, Wangda Zuo, Xu Han, Peng Xu. Building and Environment, 2017-12

    ABSTRACT | Inhomogeneous airflow distribution is common in air-conditioned rooms, especially the large open spaces. To evaluate the thermal comfort of such space, or the control performance of the Heating, Ventilation, and Air Conditioning (HVAC) systems in an efficient way, one will need a fast prediction method to simulate the airflow and temperature distribution. This paper proposes a discrete s...

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    Lei Xu, Yiqun Pan, Meishun Lin, Zhizhong Huang. Sustainable Cities and Society, 2017-11

    ABSTRACT | Load patterns have a significant effect on the configuration of an energy system. With a smoother load profile, the initial investment cost and operation and maintenance costs can be reduced. Adjustments in the area ratio of different types of buildings during early planning stage can be useful in leveling the loads. However, there are few studies till date on the guidelines for making s...

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    Lei Xu, Yiqun Pan, Meishun Lin, Zhizhong Huang. ISHVAC 2017, 2017-10

    ABSTRACT | As an important part of green eco-community planning, reasonable community energy planning requires accurate community load prediction. Hence, this paper focuses on the method of community load prediction. Given that community energy planning has great uncertainty and forward-looking requirements, this paper proposes an integrated method of buildings load prediction, which combines build...

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    Yan Lyu, Yiqun Pan, Cuisong Qu. ISHVAC 2017, 2017-10

    ABSTRACT | In architectural design, solar energy building has become the focus of many architects. In order to achieve the expected energy efficiency, the appropriate energy system should be configured during the design phase in accordance with the idea of building integrated design. In this paper, a house was designed for Solar Decathlon competition 2017 in China. In order to reach the target of e...

    ABSTRACT | This paper aims to study the impact of community form on building energy consumption of commercial district. Building typology and FAR (floor area ratio) are two important morphology factors in district energy efficiency design. To explore how they influence building energy consumption, two major questions are concerning: (1) how a given FAR generates alternative building typologies that...

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    Tao Yang, Yiqun Pan, Yikun Yang, Meishun Lin, Meishun Lin, Bingyue Qin, Peng Xu, Zhizhong Huang. Energy, 2017-06

    ABSTRACT | Global climate change and energy crises have increasingly impeded the sustainable development of society and economy. With an accelerated process of urbanization and improved standards of living, China has become the largest carbon emitter in the world and therefore has great responsibility and great potential to mitigate global carbon emissions. Accordingly, as the largest source of emi...

     ABSTRACT | 本文提出一种基于符号有向图的建筑能耗模型校验方法,将人工校验的知识和逻辑模块化,为结合人工和自动校验双边优势的途径发展提供一种可能。首先,本文通过细致研究建筑能耗相关各物理参数之间、参数和能耗之间因果关系的理论基础,建立从围护结构、室内人员等负荷侧到冷热源、输配系统等供应侧的建筑能耗符号有向图,并依据模型校验目的对图中所涉及参数进行分类。随后,建筑能耗模型校验工作分为两个阶段。第一阶段...

    侯丹琳. 硕士论文, 2017-03

    ABSTRACT | 本文以实现PID控制器参数自整定为研究目的,首先提出了一种基于PSO算法的在线过程辨识方法。通过目标函数的合理选取,这种方法可以简单、快速地辨识出系统的传递函数,准确度较高,且具有鲁棒性。然后,在得到传递函数的基础上,运用SIMC-PID参数整定方法,形成PID参数自整定算法。为了确保该方法可以应用于实际控制系统,本文给出了稳定状态的判断方法,并且提出了“两步走”的采样周期方式,即先以1s/次的速度对系统数...

    ABSTRACT | 本文采用预先模拟数据库法建立适用于夏热冬冷地区办公建筑的节能改造措施与建筑能耗数据库,并基于数据库应用数据驱动法建立节能改造快速估算模型。首先利用eQUEST软件建立典型办公建筑模型,提出“H/S——建筑形状系数”概念,与总建筑面积一起作为代表建筑形状和尺寸的参数,模拟分析建筑形状/尺寸对单位面积建筑能耗(EUI, Energy Use Intensity)的影响,并利用多元回归分析法得到“建筑形状/尺寸—EUI”关系。此关...

    林美顺, 潘毅群, 朱明亚, 王秋涧. 建设科技, 2016-01

    ABSTRACT | 现行的建筑节能设计标准对体形系数作强制性规定, 但标准研究制定体形系数相关规定时对建筑使用模式的假设与实际情况之间有很大差别, 而且标准中关于体形系数的强制性规定限制了实际中建筑师对建筑体形的设计。本文针对建筑使用模式和建筑围护结构热工性能对建筑能耗的影响, 分析了建筑体形系数与建筑能耗的关系, 认为在严寒、寒冷地区, 为降低采暖能耗, 对建筑体形系数限值是合理的, 但出于降低建筑总能耗的目, 仍需谨慎设计建筑体形; 但对于南方地区, 建议不对体形系数进行限制。在气候适宜的地区, 为充分利用自然通风、自然采光, 可以适当放大体形系数。

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    Lei Xu, Yiqun Pan, Yuan Yao, Dandan Cai, Zhizhong Huang, Norber Linder. Energy and Buildings, 2017-03

    ABSTRACT | Lighting represents a major part of building energy use. Therefore, energy savings in a lighting system can be very important for reducing building energy consumption. This article presents a study of the energy performance of various lighting systems and control strategies applied in open-plan offices. All of the experiments were carried out on a test bed. The energy saving potential of...

    林美顺, 潘毅群, 龙惟定. 建筑节能, 2015-10

    ABSTRACT | 建筑体形系数是体现建筑形态的重要指标, 以上海地区的气候条件作为夏热冬冷地区的典型代表, 采用动态能耗模拟软件De ST-c对办公类建筑进行能耗计算, 引用被动容积率的概念, 考虑建筑利用自然通风及日光照明的最大潜力, 研究建筑体形系数与建筑能耗之间的关系。研究表明, 夏热冬冷地区办公建筑体形系数越大, 建筑的被动容积率越大, 利用自然能源的潜力越大, 建筑能耗越低, 该结果为被动式建筑设计提供参考。

    ABSTRACT | Most of the local pressure loss coefficient (LPLC) models for duct fittings used in heating ventilation and air conditioning (HVAC) air-side system transient simulations are the simplified ones. The LPLCs are defined as a constant value at the rated flow condition or as a polynomial function of flow ratio (or velocity ratio). However, literature reviews give the evidence that the LPLC is...

    Danlin Hou, Yiqun Pan, Zhizhong Huang. Asim 2016, 2016-11

    ABSTRACT | The operation effect of industrial process is largely determined by the automatic control system. In the conventional control process, the Proportional Integral and Derivative (PID) parameters need to be set according to the engineering experience. Not only is the control precision not enough, but also the robustness is poor. The performance of PID control based on the system transfer fu...

    Yiqun Pan, Mingya Zhu, Zhizhong Huang. Asim 2016, 2016-11

    ABSTRACT | Data-driven Models (DMs) play a significant role in the building energy prediction researches. The lack of targeted summary on DMs usually makes researchers and scientists engaged in promoting building energy performance confused of the selection and application of DMs. This paper primarily summarizes the application of DMs in the field of building energy prediction. According to the met...

    SCI

    Tao Yang, Yiqun Pan, Jiachen Mao, Yonglong Wang, Zhizhong Huang. Applied Energy, 2016-10

    ABSTRACT | Due to the discrepancy between simulated energy consumption and measured data, it is essential to calibrate building energy models to improve its fidelity in evaluating the performance of retrofitting. Currently, most calibration methods are conducted manually to minimize this discrepancy, heavily relying on the knowledge and experience of analysts to discover a reasonable set of paramet...

    潘毅群, 郁丛, 龙惟定, 陈蔚镇. 暖通空调, 2015-03

    ABSTRACT | 从区域建筑负荷与能耗的影响因素和预测方法两方面阐述了区域建筑负荷与能耗预测的研究现状。影响区域建筑负荷与能耗的因素包括单体建筑能耗影响因素和区域特有的影响因素(城市形态与微气候)。基本预测方法有自上而下方法和自下而上方法。自下而上方法较为常见, 在应用时需引入同时使用系数, 并结合情景分析方法。由于没有成熟的区域建筑负荷与能耗预测软件, 目前主要有两种预测方法: 基本模型方法, 如基于实际调研获得的统计模型和利用GIS技术建模等; 考虑微气候与城市形态的影响, 通过能耗模拟软件与其他工具耦合进行模拟。考虑到我国建筑的特点, 可采用自下而上方法与情景分析方法结合进行区域建筑负荷与能耗预测。

    SCI

    Jiachen Mao, Yiqun Pan, Yangyang Fu. Energy and Buildings, 2016-06

    ABSTRACT | Given the growing concern about building energy efficiency and the difficulty in applying complex simulation tools during retrofit practices, the need for easily and quickly estimating the building energy performance becomes pressing. As a pilot test, this study proposes a systematic method to develop a model, which can immediately assess the annual electricity consumption for office bui...

    ABSTRACT | 考虑到城区规划阶段的不确定性较大且要求具备一定的前瞻性,本论文提出了基于软件模拟和数据挖掘的综合区域建筑群负荷预测方法及流程,并着重阐述了典型建筑模型的建立依据及校验标准。采用本文提出的区域建筑群负荷预测方法,建立包含不同建筑情景的各类典型建筑负荷指标数据库,设计和开发区域建筑群负荷预测简易计算工具,并运用该工具预测了上海地区某商务区建筑群的空调冷、热负荷。 在区域规划初期,可以通过调整...

    ABSTRACT | 大气边界层内,随着高度的增加,自然风速显著增大,其对建筑表面的风压作用也随之增强。超高层建筑(Megatall Building)通风口处上百帕的风压会直接影响通风系统的有效工作,出现进排风量不稳定、风机颤振甚至无法工作等状况,最终将对室内空气品质和舒适性产生不利影响。本文基于这一工程问题,采用CFD数值模拟方法研究室外风压对超高层建筑通风系统的影响,并从建筑结构形式和风机选型与控制策略等方面研究增强通风系统...

    丁文婷, 杜俊生, 永濑修, 胡睿, 潘毅群. 暖通空调, 2014-05

    ABSTRACT | 介绍了该建筑的自然通风设计、设计阶段对其自然通风性能的模拟计算和竣工后的实测。模拟计算结果表明,过渡季节室内通风换气次数可以达到0.8~3.1h-1。实测结果表明, 开启所有自然通风口时, 室内换气次数可以达到1.0~5.6h-1, 基本上可以满足室内人员所需最低新风量的要求。测试结果与模拟计算结果接近, 自然通风性能基本满足设计要求。

    SCI

    Mingya Zhu, Yiqun Pan, Zhizhong Huang, Peng Xu. Energy and Buildings, 2016-02

    ABSTRACT | Climate change would affect the building energy demand in the future. Building simulation is a feasible way to quantitatively evaluate this impact. Since the detailed weather is dispensable for the building simulation, it is important to predict the weather data for the future. Given that the uncertainties and limitations of GCMs on regional-scale weather prediction, an alternative metho...

    郁丛, 王秋涧, 李玉明, 潘毅群. 建筑节能, 2014-04

    ABSTRACT | 应用EnergyPlus能耗模拟软件对上海某大学体育中心进行能耗模拟。其中建筑几何使用DesignBuilder软件建立, 而后利用EnergyPlus进行空调建模并计算能耗。在此基础上,由于各个场馆使用情况的不同,挑选典型日对篮球比赛、游泳比赛、羽毛球比赛这三种典型情景分别模拟, 计算其能耗, 并分析能耗特点, 在一定程度上预估该体育中心投入使用后的耗能情况。

    Yiqun Pan, Yong Sun, Jiachen Mao, Peng Xu. BS 2015, 2015-12

    ABSTRACT | A good wind and thermal environment of residential districts can speed up the outdoor heat and pollutant dissipation, as well as ensure the comfort and health of residents. The thermal environment in residential districts is affected mainly by layout form, building shape, underlying surface characteristics, etc. In this paper, a residential area located in Qingdao is studied. Numerical s...

    Yiqun Pan, Baiqiu Tian, Jiachen Mao, Zhizhong Huang, Peng Xu. BS 2015, 2015-12

    ABSTRACT | In this study, we develop a quadratic homogeneous polynomial (QHP) regression model for predicting chillers and present its online tuning strategy. First, sample data is processed using the ordinary least square (OLS) method to obtain the initial QHP model. Second, errors occurred during on-site monitoring are categorized based on which data-processing rules are deduced to filter outlier...

    Yiqun Pan, Cong Yu, Jiachen Mao, Weiding Long, Weizhen Chen. BS 2015, 2015-12

    ABSTRACT | This study is to assess the impact of residential morphology and microclimate on energy use at the neighbourhood scale. At the scale of 200m×150m, based on the common residential forms in Shanghai, seven real residential districts are selected as research objects, including the garden houses, 6-storey flats, 14-storey flats, 28-storey flats, lane houses, slab-type apartments and high-ris...

    Yiqun Pan, Sen Huang, Jiachen Mao. Ventilation 2015, 2015-10

    ABSTRACT | In this paper, a study to evaluate the feasibility of implementing naturalventilation using operable windows in an airtight high-rise office building, which is located in Shanghai (China), is presented. In this building, the natural ventilation would work collaboratively with the mechanical cooling/ventilation system. In order to help the building operator to decide whether the natural ...