Our Honorable Guests

Transcription

1 Our Honorable Guests Environmental Division Presented by: Ir Antonio Chan, Executive Director REC Engineering Co., Ltd. REC Green Technologies Co., Ltd. REC Green Energy Solution Co., Ltd., 28 September

2 Yau Lee Holdings Limited (HKEX : 406, listed in 1991] Yau Lee Construction Co., Ltd. (Established in 1958) Green Integrated Corporation We Build We Serve We Create Comprehensive Supply Chain Specializes in Modular Fast Track Construction Green Building Technology Public Housing Estate Design & Build Hospital and Government Office Building Fitting Out, Building Renovation & Maintenance Property Development Hotel Business Yau Lee Wah Concrete Precast Yau Lee Curtain Wall and Steel Works Leena Theme Painting Limited InnoVision Architectural Services VHSoft Technologies REC Engineering (E & M Operation) Green Technologies & Solutions Ming Hop Co., Ltd. (Plumbing & Drainage) Excelicrete Low Carbon Materials TM

3 CASE SHARING : HOLIDAY INN EXPRESS HONG KONG SOHO Enhancement of Energy Utilization in Building Consultants & Project Team Architect & Interior Designer Chau, Ku & Leung Architects Engineers Ltd Structural Engineer T.K. Tsui & Associates Limited Main Contractor Yau Lee Building Construction & Decoration Co., Ltd. E&M Engineer REC Engineering Company Limited EOS Provider REC Green Technologies Company Limited Environmental Consultant Telemax Environmental & Energy Management Ltd. Hotel Operator InterContinent al Hotels Group 3 3

4 Our Challenges 1. Client s satisfaction (Employer & Operator) Achievements, Payback Period, Actual Savings, Maintenance Cost, Hotel Guest s comfort level 2. Innovation Technologies (R&D) Design Implementation, Practical Applications, Market Available Products not for fitting design purpose, Cost 3. Building & System Performance (Lifelong Project) Performance Monitoring 4. Continuous Improvement 4 4

5 2010 Holiday Inn Express Hong Kong SoHo Project Profile Commencement Date of Superstructure Anticipated Completion Date of Construction Project Duration 10 September March 2012 Sub-structure 180 days (6 mths) Superstructure 552 days (1.5 year) Licensing 150 days (4 mths) Site Area 612 m 2 (i.e hectares) Gross Floor Area 9,163 m 2 Number of floors 36 storey Double bed room: 162 nos. Number of Guest Rooms 274 nos. Twin bed room: 106 nos. Disabled room 6 nos. 5 5

6 Holiday Inn Express Hong Kong SoHo - Green Achievement The World s First High Rise Building Achieved Four Platinum or Equivalent of Green Awards HK BEAM-Plus Platinum (Final) Achieved points : 79.8 (Achieved max. points under energy used) US LEED Platinum Achieved Points : 82 (Achieved max. points under energy used) BCA Green Mark Platinum Three Star Hong Kong Green Building Council US Green Building Council Singapore Building & Construction Authority China Green Building Council Green Building Award Merit Award Asian Institute of Intelligent Buildings - Intelligent Hotel (Distinction Rank) of

7 Latest Energy Saving Performance Sustainable Building Design Energy Saving : 58.5% (compared with EMSD HK hotel energy consumption benchmark) Energy consumption reduced: 2,070,381kWh Pay Back Period: Less than 4 years (Group target : 5 years) Higher initial cost but sustainable operation Energy Consumption Benchmark of Hotel Saving Hong Kong 437.5kWh/m 2 /year 58.5% US 401 kwh/m 2 /year 54.8% Sharp Street East (actual bill) 460 kwh/m 2 /year 60.6% Jervois Street (Hotel SoHo) 181 kwh/m 2 /year * 7 7

8 Building Aspect Building Orientation Building main orientation is toward the north and south. Western side of building is designed with open staircase, E/M rooms, and 200mm thick structure wall to screen western exposure and insulate habitable areas of the building. Low-E glass used toward the North and South orientations hotel guest rooms to optimize daylight illumination and view towards harbour and mountain, but minimized heat gain. Western staircase with projecting platform serves as a breaking out area for hotel guests. Staircase also screens glazing to door windows for natural lighting to lobby. West Elevation South facing guestroom North facing guestroom 8 8

9 Structural Aspect Material Reduction 1. Rebar - Saved 45 ton 2. Concrete - Grade 40 instead of Grade CO 2 emission reduced 1:400 scale wind tunnel model 9 9

10 Structural Aspect Modular and Standard design Enhancement in construction buildability and reduction in C&D waste 50% of major building elements specified modularized and standardized for typical floor Offsite Fabrication & Metal Formwork Panels Encourage off-site fabrication of building elements in order to reduce wastage of materials and quantities of on-site waste Use of metal formwork for erection of lift shafts to enhance the buildability Typical Floor Plan METAL FORMWORK PRECAST STAIRCASE PRECAST FAÇADE (End Wall) 10 10

11 Construction Aspect BIM Virtual Construction Less Rework approx. 0.2% - 0.5% Application of BIM (Building Information Modeling) to the following areas : Underground utilities construction Typical floor construction External facade construction Further Development in 5D BIM 1) 3D REVIT Model 2) Clash detection 3) Construction Programme 4) Standard Method of Measurement for quantity taking off 5) Accurate construction cost 11 11

12 Architectural Aspect Greenery Area Green Response to Site and Neighbourhood This Hotel provides 47.5 % greenery to site (Not limited to the requirement of US LEED and HK BEAM PLUS) - Horizontal Greening: 165m 2 (26.9% of site area) - Vertical Greening:126m 2 (20.6% of site area) VERTICAL GREEN WALL View to communit y park LANDSCAPE ROOF Podium Landscape Garden with green wall and planters Vertical Green Wall at corner 2/F Landscape Roof Garden Vertical Greenery (1/F-6/F) facing Cleverly St. & Burd St

13 Architectural Aspect Irrigation System Water recycling for landscape irrigation purpose 2 nos. of recycle storage tanks are installed to collect the rainwater and condensed water from A/C system for reuse Filtration System with UV light is adapted for simple treatment of the recycled water Water meters installed for usage monitoring and management 13 13

14 Architectural Aspect Green Building Materials Low Carbon Green Building Material - Starfon TM Applications 20-years innovation extruded cementitious composite technology in US Printing on Starfon TM Glass and Starfon TM Tiles - Great Room & G/F lobby Starfon TM Metal - External Facade Starfon TM Glass with Fibre Optics - G/F lobby Starfon TM Wood External Facade 14 14

15 Architectural Aspect Green Building Materials Selection of Materials Low VOC Products 100% use of low-voc products (based on BEAM Plus and LEED requirements) - Adhesive & Sealants - Painting and Coating - Composite Wood and Argrifiber products - Carpet FSC Timber 100% use of Reused timber or timber from sustainable forest (based on BEAM Plus and LEED requirements) - For temporary use - Formwork & Falsework - For permanently use - Furniture - Dado - Door Reduce the consumption of timber from virgin forests Ensure airborne contaminants, predominantly from inside sources, do not give rise to unacceptable levels of indoor air pollution in normally occupied spaces 15 15

16 Environmental Controls Environmental Controls & Measures Enhancement in environmental controls & measures to reduce negative impact to environment and provide better working environment Air Pollution Measure- Application of BreeZer TM for fitting-out site, office building, shopping mall Handy mobile air purification system to eliminate indoor air pollution Continually purify air and maintain a good air quality working condition at fitting-out site, e.g. shopping mall, office building Removal of Dust, Respirable Suspended Particulates (97.5%), VOCs, Odor etc. in 30 mins Noise Pollution Measure - Noise Prevention Zone Acoustic insulation installed at Noise Prevention Zone to minimize noise generated on site Water Pollution Measure Water Treatment Plant Reuse of treated sewage for vehicle wheel washing 16 16

17 Architectural Aspect Blocking solar heat gain into the building Application of Low-E Glass Encourage the consideration of building envelop to reduce heat gain and overall energy loading by application of IGU with Low-E coating Glass at Unitized Curtain Wall System Comparison between IGU** & IGU with Low E coating Glass Type IGU with Low E Coating & Argon Gas Lighting transmission Shading Coefficient U-Value (W/m 2 K) 66% IGU 78% Estimated energy saving when using IGU with Low E coating is 3% South Elevation (**) 1. IGU : Insulated known as double glazing are double or triple glass window panels separated by an air or argon gas filled space to reduce heat transfer across a part of the building envelope 2. Low emissivity (Low E) coating on the glass provides the possibility of reducing the long wave radiation exchange between the panels

18 Major Sustainable Building Design Reduction of cooling load Motorized Roller Blind System Interlinked with Keycard Control Roller Blind System Control Logic Diagram Installation of Motorized roller blind system at 274 guestrooms Roller blind auto closed when guest leaves Reduction of solar heat gain Minimized lighting pollution at night Roller blind auto open when guest lock in Roller blind auto closed when guest leaves 18 18

19 Major Sustainable Building Design Reduction of cooling load Room Fresh Air Control Reduction in fresh air by 50% during unoccupied mode (while guests are mostly out of hotel) for guest rooms Saving in PA - cooling energy when there is a low demand Using CO 2 sensors to regulate the amount of ventilation air admitted 19 19

20 Major Sustainable Building Design Reduction of cooling load Hot air Hot air bed area Room Temp : 25 o C Cold Air Room Temp : 25 o C Peltier Headboard Principle: Intelligent Personal cooling concept Turn on after 1 hour when the light is diminished Using peltier cooling technology to lower the 2-3 o C around the bed area while the room temp. keeps at 25 o C Energy to cool down the spaces apart from the bed will be wasted Advantages: Electricity for air-conditioning can be reduced. Further enhance the cooling effect at bed area Lower 3 o C of room temperature Reduce A/C energy during bed time Innovation : 1 Credit Control logic Cold Air System turn- on Lux level : 0-5; and Time : 23:00-7:00 1. Room Temp changes to 25 o C 2. ifcu keeps at low speed Bed area temp : Lower 3 o C of room temp. bed area System turn-off Lux level : >0; Time : After 7:00 Press to adjust a thermostat 1. Room Temp resumes to the set point 2. ifcu keeps at low speed. * Chilled headboard will not affected by desk lamp, TV & corridor lighting 20 20

21 Major Sustainable Building Design High Efficiency Equipments Advantages Energy Saving Smart Intelligent Fan Coil Unit ifcu TM (R&D by RGT) Energy Saving Solution by replacing high efficiency permanent magnet motor and control driver, thus saving as much as 80% power consumption at low speed. (1) Energy consumption is reduced by 40%-80% (2) Variable speed FCU, 100% speed controllable (3) Temperature control accuracy up to 0.5 o C (4) Power Factor >0.85 at all speeds (high, med, low) (5) Motor heat dissipation is lowered from 58% - 95% (6) Ability to switch to either high or low static pressure FCU (7) Lower noise level ifcu TM Permanent Magnet Motor & ifcu TM retrofit kit Integrated ifcu TM Control Box Speed IFCU TM motor ( o C) AC motor ( o C) Diff. % Low % Middle % High % Operating temperature rise of motor 21 21

22 Major Sustainable Building Design High Efficiency Equipments Energy Saving Performance Operation Mode Conventional AC Motor PM Motor with Intelligent Control Driver Power consumption (W) Saving (W) % Low % Med % High % Hotel 24-hour operation : 274 sets (600 cfm) of ifcu TM in Guestroom Energy Saving : 149, kwh / Year or 545 kwh/year/room Conventional FCU ifcu TM Electricity consumption at low speed 84W = 150,585.06kWh 17W = 30,603.06kWh 18hr/d x 365d x 274 fcu x W high speed 6hr/d x 365d x 274 fcu x W W = 60,354.03kWh 51.5W = 30,903.09kWh Annual Elect. Bill HK$274,220.8 HK$79,958.0 Saving per annum HK$194,262.8 (71%) Extra Cost per ifcu TM HK$1, per unit Payback Period HK$1,500.00/HK$ year 22 22

23 ifcu TM Options (1) ifcu TM Package (Direct replacement to fan coil unit) ifcu TM Fan Coil Unit Integrated ifcu TM Control board Dimension : 176 (L) x 243 (W) x 70 (H) mm ifcu TM Thermostat (2) ifcu TM Retrofit Kit (Direct replacement to AC motor) or ifcu TM Permanent Magnet Motor Integrated ifcu TM Control board Dimension : 176 (L) x 243 (W) x 70 (H) mm Original Thermostat ifcu TM Thermostat 23 23

24 Major Sustainable Building Design Reduction of cooling load and lighting energy ONE Installation TWO Applications Pattern Recognition Energy Saving Solution PRESS PRESS provides additional energy saving solution to the traditional CCTV cameras Application of pattern recognition software and electronic interfacing devices with CCTV cameras to control the on/off lighting and airconditioning system according to occupancy inside the target area No extra sensing device CCTV Lighting Lighting Lighting ifcus Flow Control PRESS Controller can control lighting on/off and air-conditioning supply according to occupancy inside the target area Existing CCTV camera connect to RGT PRESS Controller with digital video recorder Turning off lights & ifcu TM in unoccupied area Turning on lights & ifcu TM in occupied area 24 24

25 Major Sustainable Building Design Make use of solar energy & waste heat Integrated Hot Water Supply System Primary hot water supply 1) Solar Hot Water Collector System; (72m 2, 24 nos. solar collector panel) 2) Heat Pump; & 3) Integrated Solar Hot Water Cladding Solar Hot Water Collector Integrated Solar Hot Water Cladding Heat Pump Offer cooling for room space and hot water for usage 25 25

26 Major Sustainable Building Design High Efficiency Equipments High CoP Water Cooled Chiller Energy Saving : 373,846 kwh/year 1. Total cooling load : 380 Tonne Use 2 nos. of high CoP (5.48) variable speed chillers with twin compressors (190 Tonne per chiller) Optimal performance during partload operation Lower starting current and prevent frequent start-up 2. Reduce use of secondary pumps Reduce capital cost & running cost Water-cooled variable speed chiller Supplied by REC Green Technologies Chiller 1 Comp 1 Comp 2 Chiller 2 Comp 1 Comp 2 Chiller n Comp 1 Comp

27 Principle : Major Sustainable Building Design Energy Optimization Solution ( EOS ) to HVAC System i) Usage on demand; ii) No excessive use of Energy; iii) Reduction of Human Error Reduction in Operation To optimize the overall energy consumption performance of HVAC System according to building cooling load, profiles and weather conditions through 7/24 optimization Energy Used Comparison EOS : 4,892kWh/day Normal : 6,761kWh/day Saving : 27.6% Annual Energy Saving : 234,200kWh / Year EOS Configuration : Variable speed equipments + Additional sensors + EOS Algorithm Water-cooled variable speed chiller Cooling Tower with Variable Speed Fan Chilled water pump with variable speed drive CO 2 Sensor, Temperature Sensor, EM Flow meter, Differential Pressure Sensor, Outdoor Temp. & Humidity Sensor Real-Time ambient environment information Energy Optimization Solution ( EOS TM ) To implement an energy optimization control algorithm PowerBox TM On-line Energy Management & Monitoring Solution RGT Building Management System 27 27

28 Chilled water distribution system Active Water Balancing Solution in HVAC 1. Zonal Thermal Energy Control Valve Control Parameters 1. Maximum Chilled Water Flow Rate Direct and Modulating flow control of each branch Eliminates overflow of individual branch under full loading (100%) condition 2. Chilled water return water temperature Maintain a designed branch return water temperature under part loading condition 2. Terminal Thermal Energy Control Valve Control Parameters 1. Chilled water return water temperature Direct and Modulating control chilled water flow of terminal equipment such as AHU, FCU etc. Maintain a equipment design return water temp. setpoint Example : 1. Maximum Chilled Water Flow Rate Valve opening upon flow rate exceed max. flow setpoint 2. Return water temp setpoint control (Typical o C) < 12 o C Valves opening >12 o C Valves opening Built-in temp. sensor A display shows setpoint and operation data Adjust the setpoint of max. flow rate and return water temp of each branch locally or via BMS Example : 1. Return water temp setpoint control (Typical o C) < 12 o C Valves opening >12 o C Valves opening Towards actual indoor thermal loading condition of each particular terminal equipment Built-in temp. sensor A display shows setpoint and operation data Adjust the setpoint of return water temp of each terminal equipment locally or via BMS 28 28

29 Chilled water distribution system Active Water Balancing Solution in HVAC Active Water Balancing Solution configuration Terminal Thermal Energy Control Valve Load 1-3 Load 1-2 Load 1-1 From Central System PUMP Load 2-3 Load 2-2 Load 2-1 AHU RWT : ifcu RWT : ifcu RWT : RWT : ifcu RWT : ifcu RWT : AHU 12 o C 12 o C 12 o C 12 o C 10 o C 11 o C Control return water temperature each terminal equipment under dynamic loading condition Limit the branch flow rate at 100% designed flow rate To other branches Valve opening at about 50% to control return water temperature at designed return water temperature To other branches Zonal Thermal Energy Control Valve Loading Gauge Full Off 29 29

30 Major Sustainable Building Design High Efficiency Equipments Energy Efficient Products LED Lighting (Architectural Application) Energy Saving : 700Wh/year T5 tubes with electronic ballast Distributive Intelligent Lighting System (Staircase, back of office) Specially designed for back of house, corridors and public areas where traffic is low. Energy Saving : 5,800Wh / Year Lift Counter Weight Optimization By setting the optimal lift counter weight, energy can be saved Energy Saving: 15,930kWh / year 30 30

31 PowerBox TM - Energy Management & Monitoring Solution PowerBox TM - On-line energy management and monitoring reporting software 1) PowerBox TM Energy data logging and online intelligent software Energy data management and analysis solution Peak Demand Reduction Energy related notification and alarms 2) PowerBox TM Reporter Analysis Report, Energy Distribution, improvement Opportunity Advice and Benchmarking 3) Advantages Remote access for top management and facility management operators to monitoring a group of properties via web browser interface (ipad, iphone, android phone) anywhere, anytime Facility management operators can manage and verify the building system operation as efficiently as possible It helps the client cut down building energy consumption and generates the reports by system or location Power / Energy meter IPC - Data logging & analysis Energy Data Analysis Report 31 31

32 32 MEP & Energy Saving Solutions Hardware Software 1. MEP Project Management 2. MEP contracting Implementation 3. Testing & Commissioning 1. Energy Enhancement Solution Services 2. Energy Saving HVAC System & Equipments i-fcu TM Intelligent Fan Coil Unit ECool TM - HVAC System PAU/AHU/Cooling Tower Automatic Water Balancing Valves PRESS Pattern Recognition Energy Saving Solution & Surveillance Control 3. Green Products BreeZer TM Bamako Burner TM Solar Heat Reclaimed Panel Peltier Headboard 1. PowerBox TM On-line Intelligent Energy Management Analysis 2. RGE HVAC Energy Optimization Solution 3. Performance Monitoring

33 REC Green Technologies Co., Ltd. ( RGT ) REC Green Energy Solutions Co., Ltd. ( RGE ) Enhancement of Energy Utilization in Building Thank you Questions & Answers rgt@rec-eng.com 2013 RGT All Rights Reserved