mdh.sePublikasjoner
Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Kartläggning av orsaker till skillnad mellan beräknad och uppmätt energianvändning i byggnader.: Identifiering av prioriterade arbetsområden inom energisimulering och energiuppföljning.
Mälardalens högskola, Akademin för ekonomi, samhälle och teknik.
2015 (svensk)Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
Abstract [en]

As a result of high energy use in buildings, the rules for energy conservation has, since 2006, become stricter in Sweden. Today, it must be verified that buildings meet the requirements of specific energy consumption (energy consumption per square meter heated floor area), with a calculation of the energy performance in a simulation program and by measuring the energy performance when the building is done. This in addition to the requirement that the average coefficient of thermal transmittance and the installed electrical power, for electrically heated buildings, must be calculated at the design stage. It is, however, often noted that the result of the calculations and measurements differ from each other, and that the measured values ​​often are higher than those calculated. In collaboration with NCC and Mälardalens University, an investigation was made in which the calculated and measured values ​​of energy were examined for a number of apartment buildings, schools and sports halls, to identify causes of difference, and to identify priority areas of work within, above all , energy simulation and energy follow-ups. It turned out that the difference is largely influenced by the type of the building, as it differed between apartment buildings, schools and sports halls. In addition, the amount of window area turned out to have impact on the results, as it allows for more airing, which is a factor that is very difficult to anticipate for the simulations. The windows ability to let in sunlight is another factor that is hard to anticipate. Furthermore, it was discovered that the standard values for the assumed energy consumption for domestic hot water is often too high. In some cases the assumed heated floor area and the assumed outdoor climate data differed between calculations and measurements. It also happens that heat losses from culvert pipes to the ground is not taken into account when calculations are done. As for priority areas of work, judging by the results of this work, better behavior related input data and standard values ​​for, above all, energy consumption for hot water needs to be developed. There has to be more diligence when ensuring that there are same conditions for calculations and measurements, and this could mean that those who perform the calculation may need to be assigned more responsibility over the measuring work. In addition, the follow-up work must be envisaged in the long term, which means that the number of registers should be sufficient to distinguish the different parameters, that consumes energy, apart to make it possible to learn from the over-/underestimation, and base future input and standard values ​​on it. This may mean that the simulation-/measure-work should not be limited only to comply with applicable laws, but it should be ensured that follow-up work can be done in such a way that it helps to improve the future work of simulations and measurements of energy use in buildings.

sted, utgiver, år, opplag, sider
2015.
Emneord [sv]
Specifik energianvändning, energiprestanda, energisimulering, energiuppföljning, BBR
HSV kategori
Identifikatorer
URN: urn:nbn:se:mdh:diva-28752OAI: oai:DiVA.org:mdh-28752DiVA, id: diva2:848053
Eksternt samarbeid
NCC
Fag / kurs
Building Engineering
Veileder
Examiner
Tilgjengelig fra: 2015-10-15 Laget: 2015-08-23 Sist oppdatert: 2015-10-15bibliografisk kontrollert

Open Access i DiVA

fulltext(1607 kB)426 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 1607 kBChecksum SHA-512
326e0f19331a0eeea18b2d6a4c99e07dd2cf1cf2bc0a25cb153b74a797c5add8bca763934e701727c02d20a33b502a1a051cabe93aa0b1d54cda1350585b8cda
Type fulltextMimetype application/pdf

Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 426 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

urn-nbn

Altmetric

urn-nbn
Totalt: 650 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf