Intelligent Building and Building Energy Efficiency Shengwei Wang - PowerPoint PPT Presentation

Intelligent Building and Building Energy Efficiency Shengwei Wang Chair Professor of Building Services Engineering Building Energy and Automation Research Laboratory, Department of Building Services Engineering The Hong Kong Polytechnic University beswwang@polyu.edu.hk 1

Basic Approaches for Energy Efficient Buildings 建筑节能的基本途径 • Reduced heating/cooling loads / 低热负荷 / 冷负荷 – Building envelope design, passive design, etc. / 建筑围护结构设计 , 被动式设计 , 等 • Use of energy efficient and green components and technologies / 使用节 能和绿色环保的设备与技术 • Optimization of system and technology integration, operation and control / 优化系统和技术集成 , 运行及控制 – Life-cycle commissioning, design optimization, control optimization, etc. / 全生命周期的校验 , 设计优化 , 控制优化 , 等。 20% to 50% of saving can be achieved according to my local experiences and experiences of others in Europe and North America ! 2

Steps towards Energy Efficient Buildings 建筑能源效益实现步骤 Push systems approach the best Operation Stage 使系统趋于最佳 and T&C Stage Ensure systems operate as good as intent 运行与 调试测试阶段 确保系统运行效果达到设计期望 Construction Stage Construct/install systems correctly 施工阶段 正确的系统施工 / 安装 Optimize designs and selections Design Stage 对设计和系统选用进行优化 设计阶段 Make designs proper and correct 正确合理的设计 3

Technologies and Tools Developed • Building Level Energy Performance Quick Evaluation and Diagnostic Tool; Building Energy Diagnosis Tools 建筑整体性能快速评估和诊断工具 建筑能耗诊断工具 • Detailed Evaluation and Diagnostic Tool for A/C and BA systems; 空调和 BA 系统评估和诊断工具 • Building System Online Performance Simulation Test Platform; Virtual Test Platforms 建筑系统实时性能模拟实验平台 仿真实验平台 • BA Control and Diagnosis Strategy Online Test Platform; BA 控制和诊断策略实时测试平台 • Building HVAC System Optimization Tool; Optimization Tools 建筑空调系统优化工具 优化工具 • Package of Online Optimal and Energy Efficient Control and Fault Diagnosis Strategies 实时节能优化控制和故障诊断策略系列 4

Examples of Deliverables (A) / 可达目标示例 (A) For Existing Buildings / 既有建筑 : • Building Energy Audit, Building System Evaluation and Diagnosis 建筑能源系统的评估和诊断 • Building Energy Saving Plan and Strategies 建筑节能方案和策略 • HVAC and Control System Commissioning & Upgrading 空调和控制系统的校验及改造 • Upgrading System Operation and Control Strategies 改进系统运行策略与控制策略 5

Examples of Deliverables (B) / 可达目标示例 (B) For New Buildings/ 新建建筑 : • Commissioning and Optimization of System Configuration and Selection 校验和优化系统设计和设备选型 • Commissioning and Optimization of Monitoring and Control Instrumentation and Systems 校验和优化监控设备和系统 • Commissioning of HVAC and Control Systems at Construction and T&C Stages 在施工和调试测试阶段校验空调及其控制系统 • Develop Optimal and Energy Efficient Control Strategies 开发优化及節能控制策略 6

建筑全生命周期校验及优 化 – 环球貿易广场 Building Life-cycle Diagnosis, Commissioning and Optimization - International Commerce Centre (ICC) 7

ject / 我们在项目中的角色 Our Role les in in IC ICC C Project  Independent Energy Consultant (Independent Commissioning Agent) 490 m  独立的节能顾问 ( 独立的校 118 F 验代理 )  To Dev evel elop the HVAC Energy Optimal Control System  开发 HVAC 节能优化控制 系统 8

Sum ummary mary of f Ene nergy rgy Be Bene nefi fits/ ts/ 节能效益总计 Savi ving g by C y Commi miss ssion ioning ing (Impr provi oving ng th the s sys yste tem m • 1,000,000 kWh energy consumption is saved due to the modification on the secondary water loops of Zone 3 & 4 / 改进 3 、 4 区二次水 confi figura gurati tion on and sele lection tion) ) – compared with the 环路 — 节能 1 百万度 original design. About t 3.5 .5 M pe per ye year • 2,360,000 kWh , (about 5.1% of annual energy consumption of The annual total energy chillers and cooling towers ) of the cooling system can be saving due 与原设计方案比，校验（改进系统形式及配 to the change from single speed to variable speed using VFD / 冷却 saving is about 7.0M kWh ! 置） 年节能为 3.5 百万度 塔单速运行改为 VFD 无级变频 — 节能 2.36 百万度 • 607,000 kWh , (about 2.8% of annual energy consumption of Savin ing g by Co Contr trol ol Opti timiz izat atio ion – compared with the 年节能总计约 7 百万度 chillers and cooling towers ) of the cooling system will be wasted when the lowest frequency is limited at 37 Hz / 若冷却塔最低频 case when the HVAC system operates correctly as the original design intent. 3.5 .5M per year 率定为 37Hz ，将费能约 61 万度 • 3, 500,000 kWh (about 7%) of the total energy consumption of 优化控制节能 - 与 HVAC 系统按照原设计正常 HVAC system ) can be saved using PolyU control strategies based on the original design / 在原设计方案的基础上，采用我们的 运行比， 每年节省约 3.5 .5 百万度 控制策略节能 3.5 百万度 9

Con ontrib tributions utions in in sup uppor porting ting ICC bui uildin lding g in in get getting ting HK HK-BE BEAM AM Platinum tinum Cer ertificat tificate e 对 ICC ICC 铂金认证 的贡献 Gr Grad ade e Overall Performance The overall assessment grade is based 评级 得分率 性能评价 on the percentage of applicable credits Platinum 铂金 75% Excellent 优异 (about 145) gained in 5 categories: site aspects ， material aspects ， energy Gold 金 65% Very Good 很好 use ， water use , and IAQ (vision 4/04 ). Silver 银 55% Good 较好 认证等级根据建筑在：场地，材料，能源， Above average 用水以及室内环境质量这五个方面的整体 Bronze 铜 40% 得分率而定 . 中等偏上 Annual Energy Use Reduction Pla Plati tinu num By 14.6% to get extra 2 credits H V A C 年能耗降低 14.6% 得 2 分 铂金级 （ 76.2%) Peak Demand Reduction 5 credits 分 By 26.9% to get extra 2 credits (3.5%) 峰值负荷减少 26.9% 得 2 分 Gold Gold Optimal Control Strategies 金级 （ 72.7% ） “ Innovation ” for extra 1 credits “ 创新项 ”— 优化控制策略 得 1 分

A New Hotel Development in Sheung Wan (Holiday Inn Express)  Independent Energy Consultant (Independent Commissioning Agent) 独立的节能顾问 ( 独立的校验  To Dev evel elop the HVAC Energy 顾问 ) Optimal Control System 开发 HV HVAC 节能优化控制系统

Summary of Energy Benefits/ 节能效益总计 • Saving ving contribute tributed d by Po y PolyU yU Commis mmissio sioning ning (Im Improving ving the e sys ystem tem configura figuration ion and selection) lection) and d Contr trol ol Optimization imization – compared with the case when the HVAC system operates correctly as the original design intent. About ut 20% % save ved d annuall ally 设计校验与优化控制节能 - 与 HV HVAC 系统按照原设 计正常运行比，每年节省 20% 20% 电能。 • Compared with the normal energy use of the hotel group, the overall energy consumption is reduced by over 30% and about 50% lower than what required by current standard. － 建筑总节能超过 30 ％ ( 与常规酒店平均建筑能耗相比 ) － 建筑总节能超过 50 ％ ( 与当前节能标准要求相比） 12

Research Areas/ 研究领域 • Building HVAC&R system dynamic Simulation 建筑空调制冷系统动态模拟 • HVAC&R system Optimal and Energy-Efficient Control 空调制冷系统优化及节能控制 • Building Energy and HVAC&R System Fault Diagnosis 建筑能效及空调制冷系统故障诊断 • IB/BA Integration and Management Technology IB/BA BA 集成及管理技术 13

Interaction between Intelligent Buildings and Smart Grid - Active Participation of Building to Smart Grid Demand Response 14

Concept of Interaction between Buildings and Smart Grid W EATHER D ATA B UILDINGS L OAD P REDICTION B UILDING L OAD A GGREGATION D YNAMIC P RICING I NTERNAL G AIN O PTIMAL S ETTING Smart Grids O PTIMAL C ONTROL HVAC S YSTEMS S TRATEGIES

Interaction Establishment Integrated with smart meters and grid information management and control centre , BASs can provide valuable information (e.g. energy demand characteristics) for grid optimization. The integration of smart metering system with BAS