OPTIMIZATION AND PROCESSAUTOMATION USING ISIGHT

DARMSTADT, 21 NOVEMBER 2019

SVEN REINSTÄDLER

AN INNOVATIVE SIMFLOW GENERATINGA DATA SHEET FOR A THERMAL BRIDGE

AGENDA

Thermal analysis• Motivation• Modeling• Characteristics

Isight workflow• Data management• Optimization• Postprocessing

THERMAL ANALYSIS: MOTIVATION

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Mould formation in

residential buildings

RELEVANT STANDARDS

DIN EN ISO 10211

Requirements to the temperature field along the inner surfaces of the walls

DIN EN ISO 6946

Building components and building elements – Thermal resistance and thermal transmittance – Calculation methods

Thermal insulation and energy economy in building; Supplement 2: Thermal bridges – Examples for planning and performance, with CD-ROM

DIN 4108 Supplement 2

Thermal bridges in building construction – Heat flows and surface temperatures – Detailed calculations

Building materials and products – Hygrothermal properties – Tabulated design values and procedures for determining declared and design thermal values

DIN EN ISO 10456

THERMAL ANALYSIS: MOTIVATION

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Accurate computation of the

required thermal energy

needed for heating a building

(primary energy consumption)

𝐿 =

𝑘=1

𝐾

𝑈𝑘 𝐴𝑘 +

𝑚=1

𝑀

𝜓𝑚 𝑙𝑚 +

𝑛=1

𝑁

𝜒𝑛

Classification of buildings

according to the German Energy

Conservation Regulation – EnEV

Keyword: Low-energy building

DIN EN ISO 10211-1 : 1995-11

LINEAR HEAT TRANSMITTANCE 𝜓

Thermal conductance

THERMAL ANALYSIS: MOTIVATION

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www.leitl.at/assets/upload/download/info/2016-01-14_Waermebrückenkatalog_Initiative_Ziegel_-_Zusammenstellung_GESAMT.pdf

THERMAL BRIDGE – DATA SHEET

THERMAL ANALYSIS: MOTIVATION

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www.leitl.at/assets/upload/download/info/2016-01-14_Waermebrückenkatalog_Initiative_Ziegel_-_Zusammenstellung_GESAMT.pdf

THERMAL BRIDGE – DATA SHEET

U-Wert Ziegelwand mit WDVS [W/m2K]

𝜓[W

/mK]

THERMAL ANALYSIS: MODELING

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Co

ncr

ete𝑅𝑠𝑖 = 0.13 𝑚2𝐾

𝑊𝑅𝑠𝑒 = 0.04 𝑚2𝐾𝑊

𝑞 = 0 𝑊𝑚2

𝑑𝐵 = 0.2 𝑚

𝑑𝐼 = ?

𝜆𝐶 = 1.6 Τ𝑊 𝑚𝐾

𝜆𝐼 = 0.04 Τ𝑊 𝑚𝐾

Iso

lati

onThermal resistance

𝑇𝑖 = 293 𝐾

Temperature

𝑇𝑒 = 263 𝐾

𝑇𝑠𝑖

Differential equation

Boundary conditions

𝑞 = ℎ (𝑇𝑠𝑖 − 𝑇𝑖)

𝑞 = ℎ (𝑇𝑒 − 𝑇𝑠𝑒)

𝑞 = 0

𝑞 = −𝜆 𝑇

Critical temperature

of the inner surface𝑇𝑠𝑖 ~ 283 𝐾

Point of condensation assuming relative humidity of 50 % inside the building

𝑥

𝑦

𝑙 = 0.6 𝑚

Temperature

Thermal resistance

MODEL EQUATIONS AND BOUNDARY CONDITIONS

OUTSIDE INSIDE

THERMAL ANALYSIS: CHARACTERISTICS

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𝑇 𝐾

𝑇𝑠𝑖 < 287.6 𝐾

𝑞 ∝ 𝑇

THERMAL IMAGE

ISIGHT WORKFLOW

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OVERVIEW - SIMFLOW

SELECTED COMPONENTS

Excel WordCommand Line Script Data Exchanger

Optimization

PostprocessingData management

ISIGHT WORKFLOW: DATA MANAGEMENT

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OS COMMAND

ISIGHT WORKFLOW: DATA MANAGEMENT

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DATA-EXCHANGER

ISIGHT WORKFLOW: OPTIMIZATION

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DATA-EXCHANGER

ISIGHT WORKFLOW: OPTIMIZATION

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python

Used modules:

• os

• csv

• re

SCRIPTING

ISIGHT WORKFLOW: OPTIMIZATION

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ABAQUS

ISIGHT WORKFLOW: OPTIMIZATION

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SCRIPTING

ISIGHT WORKFLOW: POSTPROCESSING

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SCRIPTING

ISIGHT WORKFLOW: POSTPROCESSING

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EXCEL

ISIGHT WORKFLOW: POSTPROCESSING

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EXCEL

ISIGHT WORKFLOW: POSTPROCESSING

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EXCEL-DATA-SHEET

ISIGHT WORKFLOW: POSTPROCESSING

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WORD

ISIGHT WORKFLOW: POSTPROCESSING

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WORD

ISIGHT WORKFLOW: POSTPROCESSING

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WORD-DATA-SHEET

ISIGHT WORKFLOW: POSTPROCESSING

12/4/2019 23

WORD-DATA-SHEET

𝐿 =

𝑘=1

𝐾

𝑈𝑘 𝐴𝑘 +

𝑚=1

𝑀

𝜓𝑚 𝑙𝑚 +

𝑛=1

𝑁

𝜒𝑛

THANK YOU FOR YOURATTENTION

SVEN REINSTÄDLERDr.-Ing.

+49 711 7825 3331s.reinstaedler@cenit.com

CENIT AGIndustriestraße 52-5470565 Stuttgartwww.cenit.com