7/28/2019 Designbuilder Competition Poster
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The purpose of the Design Optimization Competition was to
promote awareness o f a new breedof optimization tools which can
help with decision making at any stage of the design process.These
tools provide powerful techniques for identifying optimal designs
that meet potentiallyconflicting design requirements such as
minimizing environmental impact while also minimizing
development costs and at the same time satisfying constraints
such as providing minimum levelsof occupant comfort and
daylighting.
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CO2 Production[kg] 136,178.7
BuildingTotal Cost[GBP] 2,473,820
Discomfort(all clothing) [hrs] 199.6
Daylight FloorAreaabove Threshold[%] 53.3
Site
The building is to be positioned within the plotboundary on a
site near LondonDesign requirements:Building form: any building
form, internal layoutand facade configurationProgram
3000m2 office areas and a minimum of 20%service areasOther
building settings should be customizedfrom predefined template
options:- Construction materials- Glazing and shading systems-
Lighting, HVAC and Natural ventilation- Activities
ResultsThe entries were judged in a 2-stage process in which a
short list of the b est entries was drawnup purely based on numeric
carbon and cost results. The 3 winners were selected from the
shortlist by a panel of judges from the ADOPT team which includes
representatives from academia(DMU), industry consultants (ZED) and
software developers (DB)- 1st Prize awarded to Tran Tuan from the
School of Architecture at University of Hawaii atManoa, USA. Not
only was Tran Tuans design on the sweet spot on the Pareto front of
bestdesigns (109 on scatter diagram below) but in the judges view
of high architectural quality.- Joint 2nd prize : Amir Rezaei--
Bazkiaei from Ebert & Baumann Consulting Engineers,
USA(140).
- Joint 2nd prize Milos Seatovic from Quiddita, Serbia,
(018)
ARCHITECTURAL DESIGN OPTIMIZATION WITH BUILDING ENERGY
SIMULATION
SCHOOL OF ARCHITECTURE, UHM
Environmental Research & Design Laboratory
University ofHawaii at Mnoa .School of Architecture
ERDL
INTRODUCTION
THE 1st PRIZE ENTRY OF THE 2012 INTERNATIONAL DESIGN
OPTIMIZATION COMPETITIONby TUAN TRAN D.Arch Candidate - SCHOOL OF
ARCHITECTURE, UHM
INTERNATIONAL DESIGN OPTIMIZATION COMPETITION
Criteria for judging
The winning competition entry will be the onethat best meets the
functional specificationprovided and at the same time:- Minimizes
operational carbon emissions.- Minimizes construction cost-
Satisfies the comfort criteria based on ASHRAE 55- Satisfies the
minimum daylighting requirement criteria (DF 2%) for at least 50%
buildingfloor area
Since the building is located in the heating dominant climate,
high thermal resis-tance materials are very important and are at
high priority of choosing appropriateconstructions and materials of
the building fabric.
HVAC: Since heating needs to be used during cold winterweather
is quite pleasant during the summer except for few hofor heating
and natural ventilation is chosen for cooling to
decomfort.Lighting: using T5 with linear control to save energy
while mits heat radiant as internal heat gain for heating
seasonsVentilation strategy: Natural ventilation is used for
cooling aset to avoid overheating or overcooling outside air.
Shading device: No shading device is introduced in the modthe
advantage of radiant heat gain through high insulated winare mostly
located in the south facing facades
HVAC: Raise the heating set point as high as possible for ene+
Use the minimal heating set point 21 C for energy use red+ Disable
MEC cooling by setting cooling set point to 30 C (m+ Schedule:
reduce the heating loads during mid days for the hiradiance from
full occupancy, no heating during at night time anVentilation:+
Minimal ventilation set point is 24C and MEC ventilation 27 C,
delta temperature (3 C), upper Tin-Tout (5 C) and low(17 C) to
reduce the mechanical ventilation as much as possibleset to close
to avoid too hot or too cold outdoor air from natur
The climate site study shows that the climate dominantscold
winter and favourable summer except being rarelyhot for couple of
times. Therefore, the design approach isoriented to narrow office
type to utilize natural ventilationand natural daylighting. Low
cost and high energy efficientHVAC is used to heat the office
spaces during cold time in the winter while natural ventilation is
capable todelivery cooling and fresh air during the hot time in the
summer.Natural daylighting is important for this design to provide
visual comfort while minimize energy use. Smallsun space located
inside the building maximizes the required daylight for most parts
of the building and alsopromotes productive and interactive and
attractive working office spaces. Skylight for the second floor
pro-vides supplemental daylight to the large open office space
which is the most critical to the large open officespace at the
second floor.Building construction is focused on using high thermal
resistant materials for exterior building surfaces. Dou-ble-pane
low-e glazing is found to be appropriate to the design for its high
thermal resistance and reasonablecost while inviting natural
daylighting and heat radiance for heating.
Design approach
Construction
Systems
Controls
DAYLIGHTING SIMULATI
INDOOR vs OUTDOOR TEMPERATURE
HOURLY OUTDOOR RELATIVE HUMIDITY
DAYLIGHTING SIMULATION
DAYLIGHTING SIMULATION 3rd -
HOURLY BREAK-DOWN ENERGY CONSUMPTION
HOURLY VENTILATION
HOURLY DISCOMFORT
This entry illustrates how a optimal design shouldbe achieved by
a process of careful considerationthrough a passive design
viewpoint starting from theschematic design before utilizing the
powerful build-ing energy simulation to optimize and predict
buildingperformance
U E
LIGHT
LIGHT
E F F I E
E F F I E
E F F I E
E F F I E
E F F I E
E F F I E
SKYLIGHT ABOVE
E L L F F I E
E L L F F I EE L L F F I E
E L L F F I E
U E
LIGHT
LIGHT
SUNSPACE
E F F I E
E F F I E
E F F I E
E F F I E
E F F I E
E F F I E
T
E L L F F I E
E L L F F I EE L L F F I E
E L L F F I E
MAIN DESIGN CONCEPT
1st & 2rd FLOOR PLAN
3rd & 4th FLOOR PLAN
1. Building form architecturally responses to the sur-rounding,
especially allowing for expanding nice view tothe park on the west,
grand view to the city scapes, andalso adapt to the street view
from the east.2. Building axis runs along East West allowing for
mostglazing surfaces facing to the South and North for maxi-mum
daylighting and solar gain in the winter time3.Narrrow plan layout
maximizes daylighting and utilizespossible natural ventilation4.
Skylight enhances the daylighting for the 2rd, 3rd,4th floors5. Sun
space provides heat gains to the office spacesduring winter time6.
Also, such building l ayout (sun space, attached celloffices...
encourages dynamic, interactive and attractiveworking
environment)
Open ofce
Cell ofce
Utilities
Circulation
SUNSPACE
SKYLIGHT
SKYLIGHT
OPENOFFICE
OPENOFFICE
OPENOFFICE
OPENOFFICE
OPENOFFICE
OPENOFFICE
I
CELLOFFICE
CELLOFFICECELLOFFICE
CELLOFFICE
dire
ctlight
indire
ctlight
dir
ectlight
indirectligh
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DAYLIGHTING AND NATURAL VENTILATION DESIGN STRATEGY
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