Building Physics Tools: Needs, Use and the Lack of Use in the Building Process. Modelling Non-Isothermal Moisture Flow and Frost Penetration

Stephen Burke

Building Physics Tools: Needs, Use and the Lack of Use in the Building Process. Modelling Non-Isothermal Moisture Flow and Frost Penetration

Stephen Burke

Avdelningen för Byggnadsfysik

Forskningsoutput: Avhandling › Doktorsavhandling (monografi)

162 Nedladdningar (Pure)

Sammanfattning

Popular Abstract in Swedish
Trots utvecklingen inom materialvetenskap, datorkapacitet och
byggnadsteknik, fortsätter fel relaterade till byggnadsfysik att inträffa i våra byggnader. Dessa byggnadsfel spänner mellan att byggnader inte möter kraven på energianvändning till att byggnader orsakar hälsoproblem hos de människor som vistas i byggnaden till följd av att de utsätts för kemikalier eller biologiska organismer.

Dessa fel orsakar samhället ansenliga kostnader varje år och en
stor del av felen skulle kunna förhindras redan under projekteringen då
byggnadens utförande och konstruktion bestäms.

Denna avhandling belyser några av de kostnader som är relaterade till fel som går att härleda till fuktproblem i byggnader och analyserar orsakerna till att dessa fel fortsätter att inträffa inom byggindustrin, trots att kunskap finns för att förhindra dem. Detta har gjorts genom att samla kostnader för fel i skadearkiv, studera användningen av datorbaserade verktyg, utföra intervjuer
av fuktexperter och analysera hur konsulter arbetar och vilka begränsningar både de, och verktygen de använder, har.
Bland annat visas i avhandlingen att ansenliga summor pengar används till reparationer av fuktskador i byggnader. Ett annat resultat är att konsulterna som skulle kunna förhindra dessa problem att uppstå inte har möjligheterna till erfarenhetsåterföring på grund av bristfälliga ledningsstrukturer och en organisation som fokuserar på egen ekonomisk vinning och inte tillräckligt på vidareutbildning av konsulterna. De byggnadsfysikaliska verktyg som finns används inte på grund av att de är dyra, har dålig användarvänlighet eller att det finns brister i informationen avseende nyttan med verktygen.

Avhandlingen föreslår en organisatorisk modell som kan göra
erfarenhetsåterföring attraktiv för konsulter. Många av de existerande byggnadsfysikaliska verktygen lider dessutom av begränsningar till följd av att man har använt för stora förenklingar i fukttransportteorin genom att man inte tar hänsyn till ickeisoterm fukttransport eller varierande termiska egenskaper. Avhandlingen diskuterar några av problemen med modeller för ickeisoterm fukttransport och föreslår förbättringar av dessa modeller.

Originalspråk	engelska
Kvalifikation	Doktor
Tilldelande institution	Avdelningen för Byggnadsfysik
Handledare	Arfvidsson, Jesper, handledare Claesson, Johan, handledare
Tilldelningsdatum	2009 juni 12
Förlag	Byggnadsfysik LTH, Lunds Tekniska Högskola
ISBN (tryckt)	978-91-88722-39-3
Status	Published - 2009

Bibliografisk information

Defence details

Date: 2009-06-12
Time: 10:15
Place: Sal V:C, V-Huset, John Ericssons väg 1, Lunds Tekniska Högskola.

External reviewer(s)

Name: Anker, Nielsen
Title: Professor
Affiliation: Chalmers tekniska högskola, Göteborg

---

Ämnesklassifikation (UKÄ)

Husbyggnad

Tillgång till dokument

PhDStephen

Citera det här

@phdthesis{c3ef007115f34af198711793b4f960ed,

title = "Building Physics Tools: Needs, Use and the Lack of Use in the Building Process. Modelling Non-Isothermal Moisture Flow and Frost Penetration",

abstract = "Despite advances in material science, computers and building technology, building failures related to building physics continue to occur. These failures range from a building not meeting its energy use target to a building causing people to become ill from exposure to various chemicals or biological organisms. These failures cost society considerable amounts of money each year and many of these failures are preventable already during the design stage of the building process. This thesis looks at some of the costs associated with building failures due to moisture problems and explores the reasons why these failures are persistent in the building industry. This is done by looking at the role of computer based tools, interviewing moisture consultants, analysing how they operate and what limitations both they, and the tools they use, have. One result in this thesis shows that a considerable amount of money is spent on repairing moisture damages in buildings. Another result is that the consultants who can prevent these problems are not able to accumulate experience due to a poor management system which only focuses on profit and not the development of the consultants. Building physics tools are not used due to high costs, usability issues or inadequate information regarding the use of the tool. A system of operation is proposed in the thesis which can make experience meaningful to consultants. The tools themselves are limited by deficiencies in moisture transport theory which cannot take into account non-isothermal moisture transport or variable thermal properties. Some of the problems with non-isothermal moisture models are discussed and new ways to improve such models are proposed in this thesis.",

keywords = "isothermal, costs, building physics tools, moisture damages, learning loop, experience, causal loop diagrams, non-isothermal, moisture transport",

author = "Stephen Burke",

note = "Defence details Date: 2009-06-12 Time: 10:15 Place: Sal V:C, V-Huset, John Ericssons v{\"a}g 1, Lunds Tekniska H{\"o}gskola. External reviewer(s) Name: Anker, Nielsen Title: Professor Affiliation: Chalmers tekniska h{\"o}gskola, G{\"o}teborg ---",

year = "2009",

language = "English",

isbn = "978-91-88722-39-3",

series = "Report TVBH",

publisher = "Byggnadsfysik LTH, Lunds Tekniska H{\"o}gskola",

type = "Doctoral Thesis (monograph)",

school = "Division of Building Physics",

}

TY - THES

T1 - Building Physics Tools: Needs, Use and the Lack of Use in the Building Process. Modelling Non-Isothermal Moisture Flow and Frost Penetration

AU - Burke, Stephen

N1 - Defence details Date: 2009-06-12 Time: 10:15 Place: Sal V:C, V-Huset, John Ericssons väg 1, Lunds Tekniska Högskola. External reviewer(s) Name: Anker, Nielsen Title: Professor Affiliation: Chalmers tekniska högskola, Göteborg ---

PY - 2009

Y1 - 2009

N2 - Despite advances in material science, computers and building technology, building failures related to building physics continue to occur. These failures range from a building not meeting its energy use target to a building causing people to become ill from exposure to various chemicals or biological organisms. These failures cost society considerable amounts of money each year and many of these failures are preventable already during the design stage of the building process. This thesis looks at some of the costs associated with building failures due to moisture problems and explores the reasons why these failures are persistent in the building industry. This is done by looking at the role of computer based tools, interviewing moisture consultants, analysing how they operate and what limitations both they, and the tools they use, have. One result in this thesis shows that a considerable amount of money is spent on repairing moisture damages in buildings. Another result is that the consultants who can prevent these problems are not able to accumulate experience due to a poor management system which only focuses on profit and not the development of the consultants. Building physics tools are not used due to high costs, usability issues or inadequate information regarding the use of the tool. A system of operation is proposed in the thesis which can make experience meaningful to consultants. The tools themselves are limited by deficiencies in moisture transport theory which cannot take into account non-isothermal moisture transport or variable thermal properties. Some of the problems with non-isothermal moisture models are discussed and new ways to improve such models are proposed in this thesis.

AB - Despite advances in material science, computers and building technology, building failures related to building physics continue to occur. These failures range from a building not meeting its energy use target to a building causing people to become ill from exposure to various chemicals or biological organisms. These failures cost society considerable amounts of money each year and many of these failures are preventable already during the design stage of the building process. This thesis looks at some of the costs associated with building failures due to moisture problems and explores the reasons why these failures are persistent in the building industry. This is done by looking at the role of computer based tools, interviewing moisture consultants, analysing how they operate and what limitations both they, and the tools they use, have. One result in this thesis shows that a considerable amount of money is spent on repairing moisture damages in buildings. Another result is that the consultants who can prevent these problems are not able to accumulate experience due to a poor management system which only focuses on profit and not the development of the consultants. Building physics tools are not used due to high costs, usability issues or inadequate information regarding the use of the tool. A system of operation is proposed in the thesis which can make experience meaningful to consultants. The tools themselves are limited by deficiencies in moisture transport theory which cannot take into account non-isothermal moisture transport or variable thermal properties. Some of the problems with non-isothermal moisture models are discussed and new ways to improve such models are proposed in this thesis.

KW - isothermal

KW - costs

KW - building physics tools

KW - moisture damages

KW - learning loop

KW - experience

KW - causal loop diagrams

KW - non-isothermal

KW - moisture transport

M3 - Doctoral Thesis (monograph)

SN - 978-91-88722-39-3

T3 - Report TVBH

PB - Byggnadsfysik LTH, Lunds Tekniska Högskola

ER -

Building Physics Tools: Needs, Use and the Lack of Use in the Building Process. Modelling Non-Isothermal Moisture Flow and Frost Penetration

Sammanfattning

Bibliografisk information

Ämnesklassifikation (UKÄ)

Tillgång till dokument

Fingeravtryck

Citera det här