Indoor air humidity of massive buildings and hygrothermal surface conditions

Henk L. Schellen; Jos van Schijndel; Dionne Neilen; Marcel A.P. van Aarle

Indoor air humidity of massive buildings and hygrothermal surface conditions

Henk L. Schellen, Jos van Schijndel, Dionne Neilen, Marcel A.P. van Aarle

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Conferentiebijdrage › Academic › peer review

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The indoor air humidity of massive buildings is important for the preservation of the building and its valuable interior parts. Open air gas infrared heating, for example, produces a lot of vapor, which may lead to high indoor air relative humidities and condensation on cold exterior walls and glazing. Due to (air) heating under cold winter conditions, the relative humidity drops and this may lead to very low indoor air relative humidities for interior objects such as church organs, resulting in cracking of wooden parts and other problems of drying out. Humidification would be a solution, but it may lead to high relative humidities near cold exterior surfaces. A method was developed for a graphical representation of the near surface relative humidity by measuring the surface temperatures as a function of time by infrared thermography and simultaneously determining the mean vapor pressure of the air. From these measurements, mold germination on indoor surfaces can be predicted in an early state, making use of a representation in so-called hygrographic pictures.

Originele taal-2	Engels
Titel	Buildings IX
Subtitel	Thermal Performance of Exterior Envelopes of Whole Buildings
Uitgeverij	American Society of Heating, Refrigerating and Air-Conditioning Engineers
Aantal pagina's	12
ISBN van geprinte versie	9781931862608
Status	Gepubliceerd - 1 jan. 2004
Evenement	9th International Conference on Thermal Performance of Exterior Envelopes of Whole Buildings 2004 - Clearwater, Verenigde Staten van Amerika Duur: 5 dec. 2004 → 10 dec. 2004 https://web.ornl.gov/sci/buildings/conf-archive/Buildings_IX_%20proceeding.shtm

Publicatie series

Naam	Thermal Performance of the Exterior Envelopes of Whole Buildings
ISSN van elektronische versie	2166-8469

Congres

Congres	9th International Conference on Thermal Performance of Exterior Envelopes of Whole Buildings 2004
Land/Regio	Verenigde Staten van Amerika
Stad	Clearwater
Periode	5/12/04 → 10/12/04
Internet adres	https://web.ornl.gov/sci/buildings/conf-archive/Buildings_IX_%20proceeding.shtm

Bibliografische nota

Publisher Copyright:
© 2004 ASHRAE.

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https://web.ornl.gov/sci/buildings/conf-archive/2004%20B9%20papers/084_Schellen.pdf

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Schellen, H. L., van Schijndel, J., Neilen, D., & van Aarle, M. A. P. (2004). Indoor air humidity of massive buildings and hygrothermal surface conditions. In Buildings IX: Thermal Performance of Exterior Envelopes of Whole Buildings Artikel 84 (Thermal Performance of the Exterior Envelopes of Whole Buildings). American Society of Heating, Refrigerating and Air-Conditioning Engineers. https://web.ornl.gov/sci/buildings/conf-archive/2004%20B9%20papers/084_Schellen.pdf

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title = "Indoor air humidity of massive buildings and hygrothermal surface conditions",

abstract = "The indoor air humidity of massive buildings is important for the preservation of the building and its valuable interior parts. Open air gas infrared heating, for example, produces a lot of vapor, which may lead to high indoor air relative humidities and condensation on cold exterior walls and glazing. Due to (air) heating under cold winter conditions, the relative humidity drops and this may lead to very low indoor air relative humidities for interior objects such as church organs, resulting in cracking of wooden parts and other problems of drying out. Humidification would be a solution, but it may lead to high relative humidities near cold exterior surfaces. A method was developed for a graphical representation of the near surface relative humidity by measuring the surface temperatures as a function of time by infrared thermography and simultaneously determining the mean vapor pressure of the air. From these measurements, mold germination on indoor surfaces can be predicted in an early state, making use of a representation in so-called hygrographic pictures.",

author = "Schellen, {Henk L.} and {van Schijndel}, Jos and Dionne Neilen and {van Aarle}, {Marcel A.P.}",

note = "Publisher Copyright: {\textcopyright} 2004 ASHRAE.; 9th International Conference on Thermal Performance of Exterior Envelopes of Whole Buildings 2004 ; Conference date: 05-12-2004 Through 10-12-2004",

year = "2004",

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series = "Thermal Performance of the Exterior Envelopes of Whole Buildings",

publisher = "American Society of Heating, Refrigerating and Air-Conditioning Engineers",

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Schellen, HL, van Schijndel, J, Neilen, D & van Aarle, MAP 2004, Indoor air humidity of massive buildings and hygrothermal surface conditions. in Buildings IX: Thermal Performance of Exterior Envelopes of Whole Buildings., 84, Thermal Performance of the Exterior Envelopes of Whole Buildings, American Society of Heating, Refrigerating and Air-Conditioning Engineers, 9th International Conference on Thermal Performance of Exterior Envelopes of Whole Buildings 2004, Clearwater, Verenigde Staten van Amerika, 5/12/04. <https://web.ornl.gov/sci/buildings/conf-archive/2004%20B9%20papers/084_Schellen.pdf>

Indoor air humidity of massive buildings and hygrothermal surface conditions. / Schellen, Henk L.; van Schijndel, Jos; Neilen, Dionne et al.
Buildings IX: Thermal Performance of Exterior Envelopes of Whole Buildings. American Society of Heating, Refrigerating and Air-Conditioning Engineers, 2004. 84 (Thermal Performance of the Exterior Envelopes of Whole Buildings).

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/Congresprocedure › Conferentiebijdrage › Academic › peer review

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AB - The indoor air humidity of massive buildings is important for the preservation of the building and its valuable interior parts. Open air gas infrared heating, for example, produces a lot of vapor, which may lead to high indoor air relative humidities and condensation on cold exterior walls and glazing. Due to (air) heating under cold winter conditions, the relative humidity drops and this may lead to very low indoor air relative humidities for interior objects such as church organs, resulting in cracking of wooden parts and other problems of drying out. Humidification would be a solution, but it may lead to high relative humidities near cold exterior surfaces. A method was developed for a graphical representation of the near surface relative humidity by measuring the surface temperatures as a function of time by infrared thermography and simultaneously determining the mean vapor pressure of the air. From these measurements, mold germination on indoor surfaces can be predicted in an early state, making use of a representation in so-called hygrographic pictures.

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Indoor air humidity of massive buildings and hygrothermal surface conditions

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