Sustainable Hotel Design.ppt

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1、Sustainable Hotel Design,Group 5 Presentation 4Demand/Supply Matching,Where We Are Now,Site C Building Design,North,1st level,Ground level,Reducing Lighting demand,Low lighting Requirement Rooms -50 lux Halls/stairs - 150 lux Restaurant- 150 lux,High lighting Requirement Swimming pool - 300lux Gym -

2、 500 lux Kitchen- 500 lux Office - 500 lux,Lighting Most important factor for safety and comfort,Artificial lighting,Energy used to light building for 20 hours of the day. Lumen method used to gain amount of luminaires, savings: Bedroom 0.5MWh, Restaurant 17.8MWh, Kitchen 35MWh,Minimise demand by us

3、ing energy efficient lamps Replace smaller fittings with Compact fluorescent 20w Replace larger fittings with tubular fluorescent 60w Compare against tungsten 100w filament Energy Reduction = 80% (from efficacy),Natural Day-lighting,Building design optimised for natural daylight Daylight factor calc

4、ulated using protractor Diffuse sky approx 5000lx (200lx available),20%,10%,5%,4%,Control Lighting,Control for bedrooms, (occupants) Dimmer switch. Internal removable shading. Key card system. Control for restaurant, office (control systems) Stepped PSALI and switch off zones Would require light sen

5、sors Master switch/timers,Natural ventilation and Heat Recovery,Natural ventilation As previous designHeat Recovery 60% efficientAll air passes heat exchanger.Need to be easily cleanable for kitchen,Mechanical Ventilation,Mechanical Ventilation Using two Aerofoil bladed centrifugal pump ( 85%) For o

6、utside 0 and inside 30 Swimming pool load for fans= 1kW7290m3/s Saving using heat recovery on heating load =35kWKitchen load for fans=2kW11520m3/s Required to remove contaminants from kitchen.,Fan Power,Previous Simulation,Previously: Base Case 1 zone L-shape modelUsed to determine: Form Orientation

7、 Construction Glazing Area,BASE CASE,L-SHAPE,Zoned Model,Zoned model determines: More accurate demand information Demand profiling Zonal environmental strategiesBedroom Floor area: 32mVentilation :1 ac/hOperations Lighting: 50W Occupancy: 22:00 07:00Design temperature 19-21C (CIBSE Guide B1),Tweakin

8、g the Design,Glazing Area: 30% Minimise overheating in summer Reduce heat loss in winterVentilation rate Summer: 3 ac/h 10:00 18:00 1 ac/h 18:00 10:00 (following day),Winter / Transition: 1 ac/h 00:00 - 24:00Construction Varied load bearing block work to timber construction,Timber Wall Construction,

9、U-value 0.20W/mK Decrement Delay 12.4 hr Sound absorption 52dbAdvantages Cost competitive Fewer layers allows slimmer construction Vapour permeable without membranes no interstitial condensation Matches thermal and acoustic properties of heavyweight builidings Materials are non-toxic and low embodie

10、d energy,Timber Roof Construction,U-value 1.7 W/mK (with 200mm pavatherm) Decrement delay 11.5 hr Sound absorption 47dbAdvantages Reduces overheating and external noise Vapour permeable without membranes prevents interstitial condensation Materials are non toxic with low embodied energy,Bedroom,Seas

11、onal Performance Typical summer day (free floating)3ac/h (07:00-22:00), 1ac/h (22:00-07:00)Typical spring dayHeating requirement 3.73 kWhTypical winter dayHeating requirement 22.29 kWh,Bedroom Demand Profile,Sensible heating load Winter (typical) Varies between 0.3-0.5 kWTransition (typical) Peak 04

12、:00-08:00 about 0.25 kW Off 14:00-20:00Summer (typical) Most days require no heating Some days require boost 0.03kWfrom 04:00-8:00,Electrical Demand,Thermal Demand,Final Demand Analysis,Our hotel consumes:56% less energy than typical practice 33% less energy than best practice,Demand /Supply Matchin

13、g - HOMER,Manipulation to model CHP system Biogas Generator Heat recovered from generator imitate GSHP + Heat recovery Boiler imitate thermal supply from CHP Resources Wind ESP-r database Stream Flow 40 l/s Biomass Constant Supply Load Profiles Thermal ESP-r Electrical Good Energy,Initial Findings -

14、 Power,84% CHP 16% Wind19% excess power,Winter,Summer,Transition,Initial Findings - Thermal,69% CHP 31% GSHP8% excess heat,Transition,Summer,Winter,Alterations to Model,Addition of Battery 152 kWh 304 kWh 408 kWhSubtraction of Hydro Power,Power - Matching,80% CHP 20% Wind0% excess power,Winter,Summer,Transition,Thermal - Matching,84% CHP 16% GSHP3% excess heat,Winter,Summer,Transition,Conclusions,Final Supply Systems Biomass CHP Wind Energy Ground Source Heat Pumps Do without Hydro Power Use of Batteries,Thank You For Listening,Any Questions ?,