Computes the static and dynamic thermal transmission properties of simple building components, estimates the risk of water vapour condensation and mould growth, and checks if the component complies with the Swiss SIA 180 standard. It also allows the calculation of optimal thickness in terms of energy or cost.
Calculations are performed according to the most recent European standards. Included is a comprehensive materials data base.
Lesokai 4 is part of the LESO series, and has the same user interface as Lesosai.
Screen Shots
Keywords
thermal tranmission, water vapor, building envelope
Validation/Testing
N/A
Expertise Required
Understanding of basic building physics.
Users
More than 120 users since first version was distributed in 1987.
Audience
Architects, building physics consultants, engineers.
Input
Material and thickness of each layer of the building components entered via graphic user interface dialog boxes. The component may have several sections.
Output
Full report including results of thermal calculations under steady state and harmonic boundary conditions, water vapour pressure across the component, condensation zones, monthly amount of condensed and evaporated water, optimal thickness. Schematic drawing of the component.
Computer Platform
PC-compatible, 486 or higher, Windows 95 or higher.
Programming Language
Visual Basic
Strengths
User-friendly interface, comprehensive materials database including several composite materials. Expandable user's database. German and French versions.
Weaknesses
Limited to components sections made of homogeneous parallel and plane layers. Thermal bridges are detected, but not calculated by this program. No English version yet.
Contact
Company: |
Solar Energy and Building Physics Research Laborat |
Address: |
Swiss Federal Institute of Technology
LESO - EPFL
Lausanne CH-1015
Switzerland |
Telephone: |
+41 (21) 693 4557 |
Facsimile: |
+41 (21) 693 2722 |
E-mail: |
Claude.Roulet@epfl.ch |
Website: |
http://lesowww.epfl.ch |
Availability
Site-license software packages for CHF 550.- purchased through LESO-EPFL at the above address. Check the WWW pages for additional information. 50% discount for education.
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