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Nilsson, Håkan O.
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Publications (10 of 13) Show all publications
Nilsson, H. O. (2007). Thermal comfort evaluation with virtual manikin methods. Building and Environment, 42(12), 4000-4005
Open this publication in new window or tab >>Thermal comfort evaluation with virtual manikin methods
2007 (English)In: Building and Environment, ISSN 0360-1323, E-ISSN 1873-684X, Vol. 42, no 12, p. 4000-4005Article in journal (Refereed) Published
Abstract [en]

Computational fluid dynamics has become an important tool in the prediction of thermal comfort in occupied spaces. Despite its ability to predict temperature and velocity fields, it is more difficult to evaluate the degree of thermal comfort experienced by an occupant. This article describes the construction of a new numerical thermal manikin, with new comfort evaluation methods based on data from thermal manikin measurements as well as subjective results from several hundred experiments. The level of thermal comfort is highly dependent on the local environment. Human beings respond differently to local heat transfer in different parts of their bodies. It is suggested for that reason that local results from manikins should be presented in new clothing independent comfort zone diagrams. The research presented in here is intended to be used to evaluate system solutions that provide improved thermal climate in many different everyday situations, e.g. all types of buildings and vehicles.

Keywords
Thermal manikin; Mannequin; Thermal climate assessment; Clothing-independence; Comfort zone diagram
National Category
Energy Systems
Identifiers
urn:nbn:se:hig:diva-2504 (URN)10.1016/j.buildenv.2006.04.027 (DOI)000249847600009 ()2-s2.0-34547933312 (Scopus ID)
Available from: 2008-05-28 Created: 2008-05-28 Last updated: 2018-03-13Bibliographically approved
Nilsson, H., Landström, U. & Kjellberg, A. (2006). Exponering och upplevelser av trafikbuller på arbetsplatser. Stockholm: Arbetslivsinstitutet
Open this publication in new window or tab >>Exponering och upplevelser av trafikbuller på arbetsplatser
2006 (Swedish)Report (Other academic)
Place, publisher, year, edition, pages
Stockholm: Arbetslivsinstitutet, 2006. p. 35
Series
Arbetslivsrapport / Arbetslivsinstitutet, ISSN 1401-2928 ; 2006:37
Keywords
Trafik, buller, arbetsplatser
National Category
Occupational Health and Environmental Health
Identifiers
urn:nbn:se:hig:diva-2128 (URN)
Available from: 2008-06-23 Created: 2008-06-23 Last updated: 2018-03-13Bibliographically approved
Nilsson, H. O. (2006). Heta ämnen - mitt i vintern: rapport från Ashraes vintermöte 2006 i Chicago. Energi & Miljö (3), 48-49
Open this publication in new window or tab >>Heta ämnen - mitt i vintern: rapport från Ashraes vintermöte 2006 i Chicago
2006 (Swedish)In: Energi & Miljö, ISSN 1101-0568, no 3, p. 48-49Article in journal (Other (popular science, discussion, etc.)) Published
Identifiers
urn:nbn:se:hig:diva-2511 (URN)
Available from: 2008-05-30 Created: 2008-05-30 Last updated: 2018-03-13Bibliographically approved
Nilsson, H. O. (2006). How to Build and Use a Virtual Thermal Manikin Based on Real Manikin Methods. In: Proceedings of the 6th International Thermal Manikin and Modeling Meeting. Paper presented at 6th International Thermal Manikin and Modelling Meeting, Hong Kong, Peoples R China, Oct 16-18, 2006.
Open this publication in new window or tab >>How to Build and Use a Virtual Thermal Manikin Based on Real Manikin Methods
2006 (English)In: Proceedings of the 6th International Thermal Manikin and Modeling Meeting, 2006Conference paper, Published paper (Other academic)
Abstract [en]

 It has always been valuable to be able to make early decisions in thermal climate investigations. The development of virtual thermal manikins (VTM) and computer simulated persons (CSP) has become an important complement to traditional evaluation of the thermal environment. This paper describes how to build a VTM within a commercial computational fluid dynamics code (CFD). The methods are based on human experiments and real thermal manikin measurements.

Unfortunately, too few of the theories behind thermal manikin simulations are available in the public domain. Many researchers and companies still use several in-house codes for all or essential parts of their calculations. This paper provides information on how to build the geometry of the manikin in three different commercial CFD codes (CFX (R), Star-CD (R) and Fluent (R)). More information and descriptions are also given on how to connect the VTM to the CFD calculations and make the system interact in real time throughout the full iteration process.

Identifiers
urn:nbn:se:hig:diva-2506 (URN)000245322500021 ()
Conference
6th International Thermal Manikin and Modelling Meeting, Hong Kong, Peoples R China, Oct 16-18, 2006
Available from: 2007-07-09 Created: 2007-07-09 Last updated: 2018-03-13Bibliographically approved
Nilsson, H. O. (2006). Local evaluation of thermal comfort. International Journal of Vehicle Design, 42(1-2), 8-21
Open this publication in new window or tab >>Local evaluation of thermal comfort
2006 (English)In: International Journal of Vehicle Design, ISSN 0143-3369, E-ISSN 1741-5314, Vol. 42, no 1-2, p. 8-21Article in journal (Refereed) Published
Abstract [en]

Increasing demand for a comfortable cabin environment makes it necessary, as early as the construction phase, to estimate what effect different factors will have on the driver and passenger. Full-scale measurements and numerical simulations have been carried out in order to investigate how well computational fluid dynamics (CFD) and thermal manikins are able to predict the perceived thermal climate. The heat loss from real or virtual manikins interacts with the environment around the body, as well as thermal interaction with windows; ventilation and seat are influencing the manikins. When manikin heat loss is linked to human thermal sensations in new comfort zone diagrams, the local as well as total thermal situation can be clearly presented. Simulations of this type will enable engineers to make better decisions and early predictions in the design and construction process, improving the thermal comfort in the vehicle environment.

Keywords
cabin climate, comfort zone diagram, computational fluid dynamics, CFD, equivalent temperature, thermal manikins, mean thermal vote, thermal climate assessment, vehicle design, driver comfort, thermal comfort, cabin temperature, heat loss, simulation
National Category
Energy Systems
Identifiers
urn:nbn:se:hig:diva-2502 (URN)10.1504/IJVD.2006.010173 (DOI)000239027600003 ()2-s2.0-33745783126 (Scopus ID)
Available from: 2007-07-09 Created: 2007-07-09 Last updated: 2018-03-13Bibliographically approved
Nilsson, H. O. (2006). Teknisk beskrivning av termiska manikiner: mät- och simuleringsmetoder som utgår från människors klimatupplevelser. Energi & Miljö (3), 56-58
Open this publication in new window or tab >>Teknisk beskrivning av termiska manikiner: mät- och simuleringsmetoder som utgår från människors klimatupplevelser
2006 (Swedish)In: Energi & Miljö, ISSN 1101-0568, no 3, p. 56-58Article in journal (Other (popular science, discussion, etc.)) Published
Abstract [sv]

Det är nu aktuellt att göra simuleringar av energiförbrukning och inomhusmiljö för att snabbt ge de effektivaste förslagen på energisparåtgärder. Med verkliga och virtuella termiska manikiner kan man undersöka hur människor kommer att uppleva de olika klimatsituationerna redan innan de uppstår.

Termiska manikiner är formade som människokroppen. De registrerar värmeförluster över hela sin yta i alla riktningar samtidigt, exakt som människor. Genom att bestämma storleken på värmeavgivningen kan en klimatbedömning göras för såväl enskilda kroppsdelar som för hela kroppen. Precis som för människor påverkar kläderna resultatet av mätningen. Med mindre och tunnare kläder blir mätdockan mer känslig för termisk påverkan från omgivningen. Det är därför viktigt att beskriva vilka kläder man använder och att använda komfortzondiagram vid utvärderingen av resultaten.

Identifiers
urn:nbn:se:hig:diva-2510 (URN)
Available from: 2008-05-30 Created: 2008-05-30 Last updated: 2018-03-13Bibliographically approved
Nilsson, H. O. (2006). Thermal manikin simulation using experimental correlations and clothing independent comfort zone diagrams. In: ASHRAE Winter Meeting 2006. Paper presented at ASHRAE Winter Meeting, Chicago, IL, January 21-25, 2006.
Open this publication in new window or tab >>Thermal manikin simulation using experimental correlations and clothing independent comfort zone diagrams
2006 (English)In: ASHRAE Winter Meeting 2006, 2006Conference paper, Published paper (Other (popular science, discussion, etc.))
Identifiers
urn:nbn:se:hig:diva-2507 (URN)
Conference
ASHRAE Winter Meeting, Chicago, IL, January 21-25, 2006
Available from: 2007-07-09 Created: 2007-07-09 Last updated: 2018-03-13Bibliographically approved
Nilsson, H. O. (2005). Improved evaluation of the local thermal environment with clothing independent comfort zone diagrams. In: Environmental ergonomics XI: proceedings of the 11th International Conference, 22-26 May, 2005, Ystad, Sweden. Lund: Lunds universitet
Open this publication in new window or tab >>Improved evaluation of the local thermal environment with clothing independent comfort zone diagrams
2005 (English)In: Environmental ergonomics XI: proceedings of the 11th International Conference, 22-26 May, 2005, Ystad, Sweden, Lund: Lunds universitet , 2005Conference paper, Published paper (Other (popular science, discussion, etc.))
Place, publisher, year, edition, pages
Lund: Lunds universitet, 2005
Series
Publication / Institutionen för designvetenskaper, Avdelningen för arbetsmiljöteknik, Lunds tekniska högskola, ISSN 1650-9773 ; 15
Identifiers
urn:nbn:se:hig:diva-2509 (URN)91-631-7062-0 (ISBN)
Note
11th International conference on environmental ergonomics, 22-26 May, 2005,Ystad, Sweden Available from: 2007-07-09 Created: 2007-07-09 Last updated: 2018-03-13Bibliographically approved
Nilsson, H. O. (2005). Lokal bedömning av klimatpåverkan innebär förbättringar och förenklingar. Energi & Miljö (12), 57-59
Open this publication in new window or tab >>Lokal bedömning av klimatpåverkan innebär förbättringar och förenklingar
2005 (Swedish)In: Energi & Miljö, ISSN 1101-0568, no 12, p. 57-59Article in journal (Other (popular science, discussion, etc.)) Published
Identifiers
urn:nbn:se:hig:diva-2512 (URN)
Available from: 2008-05-30 Created: 2008-05-30 Last updated: 2018-03-13Bibliographically approved
Nilsson, H. O. (2005). Med människan som kontrollpunkt. VVS-Forum (Oktober 05), 18-20
Open this publication in new window or tab >>Med människan som kontrollpunkt
2005 (Swedish)In: VVS-Forum, ISSN 0346-4644, no Oktober 05, p. 18-20Article in journal (Other (popular science, discussion, etc.)) Published
Identifiers
urn:nbn:se:hig:diva-2513 (URN)
Available from: 2008-06-17 Created: 2008-06-17 Last updated: 2018-03-13Bibliographically approved
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