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BuildSIM Nordic 2014- Dynamic Facade Systems

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Sinziana Rasca

on 1 October 2014

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Transcript of BuildSIM Nordic 2014- Dynamic Facade Systems

Season variable U-value
-analysis office Chicago-
Variable g-value
4 types of shading system:
Hello,
I'm an architect!
Dynamic Facade Systems - Master Thesis
DYNAMIC FACADE...WHAT?
Daily variable U-value yearly
savings for cooling, Office
External roller blinds (OMBRA)
External solar selective shade
Electrochromic glass (2 steps)
Transparent insulation with solar selective layer
CHICAGO - office
Level 11
XS
L
Dynamic Facade Savings
-48%
-69%
-33%
-18%
CONCLUSIONS...
- Dynamic Facade Systems WORK!
Static Facade System
Dynamic Facade System
Active response to outdoor temperature
Lower energy need
variable
U-value
Let's start this trip!
THESIS IDEA
positively influence overall energy demand*
* Source: International Programs Center, U.S. Bureau of the Census
Average and high density populated areas*
Population and GDP
Chicago
Miami
Beijing
Essen
-9%
-58%
-91%
-32%
-4%
-26%
-42%
-10%
-9%
-28%
-82%
-17%
-4%
-17%
-32%
-6%
-25%
-24%
-19%
-9%
What are we taking aboard?
XXS
XS
S
M
L
XL
XXL
LEVEL 11 - Passive House Level
Variable g-value
4 types of automatic controls:
Solar irradiation
(95 W/m2 or 189 W/m2)
Always
ON
Day Cooling and Night Temp.<12 C
Night Temp. <12 C
o
o
-33%
-21%
-25%
-21%
-46%
-36%
-30%
-25%
-17%
-21%
-14%
-23%
-14%
-19%
-14%
-20%
-28%
-9%
-25%
-25%
-32%
-13%
-25%
-25%
Sinziana Rasca - Master Programme Energy-efficient and Environmental Buidling Design, Lund University
Background...
*source: LUWOGE consult GmbH
*Most research for the thesis based on Global Heat Management Potential project (LUWOGE consult GmbH)
Different climates- 4 locations?
Climate, population and GDP
Try an approach from "the other end"-what the building
needs rather than using different materials and
"see what we get"
variable
g-value
Tool used
Design Builder - Energy Plus based dynamic simulation tool
EDSL Tas- dynamic simulation tool
PHPP-based, Global Study on Heat Management Potential simulation tool (developed by LUWOGE consult GmbH)
- coefficient used to measure the solar energy transmittance of glass
- called a Solar Factor on some window literature
g-value
OFFICE
RESIDENTIAL
Computer Models (Design Builder)
DYNAMIC ELEMENTS OF EXTERNAL ENVELOPE
SYSTEM PROPERTIES
WALLS
WINDOWS
SIZE
USE
CONSTRUCTION
CLIMATE
+
*compared to the passive house level
ENVELOPE STRUCTURE
- Answer study question: - U-value upper limit established
- g-value system properties defined (each case)
- Impact depends on
- size and glazing/wall ratio
- climate
- building use
- natural ventilation level
- % of decrease - Essen & Chicago
- actual savings - Miami
- g-value variation - better impact than U-value variation
Best results
Results could be used for creating rules of thumb for similar climates and buildings.
Full transcript