Mapping of moisture by U-value metering combined with ISO 10456 founded calculations
Nassiria, Arman (2019)
Avaa tiedosto
Lataukset:
2019
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-2019083018071
https://urn.fi/URN:NBN:fi:amk-2019083018071
Tiivistelmä
Energy performance in buildings are needed more than they have ever been before. To
achieve energy savings in buildings we have to gain a better understanding of the thermal
properties in a building.
U-value meter is a device used to measure the heat passing through material, a good
insulation will have a low lambda value as possible to reduce heat loss. U-value is mainly
estimated by calculating the thermal properties of the layers inside a wall. The Building
Research Establishment, an organization to investigate building materials and methods of
construction for new housing has announced that U-value calculations are frequently
incorrect and that there is further research required to reach a more accurate estimation.
The aim of this work is to is to analyze if there’s any correlation between moisture
readings and U-values. The survey was conducted was by analyzing a terraced house in
Matinkylä (Espoo) with moisture problems. Arcada rapid U-value meters were used to
reach a more accurate U-value and moisture reading of the walls. The findings showed
that the theoretical U-value didn’t match with the measured U-values. The moisture
readings showed unsystematic correlation with U-values. The findings in this study
suggest that moisture meters are not reliable tool for diagnosing moisture problems..
Instead moisture meter should be used to map a profile of moisture, meaning just to
distinguish areas which are moist and dry. However, measuring U-value, with the Arcada
U-value meters, to determine moisture problems represents an innovative alternative and
non-destructive method to get a more accurate and reliable information. It can be
foreseen that U-value metering will revolutionize mapping for moisture in the near future.
achieve energy savings in buildings we have to gain a better understanding of the thermal
properties in a building.
U-value meter is a device used to measure the heat passing through material, a good
insulation will have a low lambda value as possible to reduce heat loss. U-value is mainly
estimated by calculating the thermal properties of the layers inside a wall. The Building
Research Establishment, an organization to investigate building materials and methods of
construction for new housing has announced that U-value calculations are frequently
incorrect and that there is further research required to reach a more accurate estimation.
The aim of this work is to is to analyze if there’s any correlation between moisture
readings and U-values. The survey was conducted was by analyzing a terraced house in
Matinkylä (Espoo) with moisture problems. Arcada rapid U-value meters were used to
reach a more accurate U-value and moisture reading of the walls. The findings showed
that the theoretical U-value didn’t match with the measured U-values. The moisture
readings showed unsystematic correlation with U-values. The findings in this study
suggest that moisture meters are not reliable tool for diagnosing moisture problems..
Instead moisture meter should be used to map a profile of moisture, meaning just to
distinguish areas which are moist and dry. However, measuring U-value, with the Arcada
U-value meters, to determine moisture problems represents an innovative alternative and
non-destructive method to get a more accurate and reliable information. It can be
foreseen that U-value metering will revolutionize mapping for moisture in the near future.