TY  - JOUR
A1  - Jentsch, Mark F.
A1  - Kulle, Christoph
A1  - Bode, Tobias
A1  - Pauer, Toni
A1  - Osburg, Andrea
A1  - Namgyel, Karma
A1  - Euthra, Karma
A1  - Dukjey, Jamyang
A1  - Tenzin, Karma
T1  - Field study of the building physics properties of common building types in the Inner Himalayan valleys of Bhutan
JF  - Energy for Sustainable Development 38
N2  - Traditionally, buildings in the Inner Himalayan valleys of Bhutan were constructed from rammed earth in the western regions and quarry stone in the central and eastern regions. Whilst basic architectural design elements have been retained, the construction methods have however changed over recent decades alongside expectations for indoor thermal comfort. Nevertheless, despite the need for space heating, thermal building performance remains largely unknown. Furthermore, no dedicated climate data is available for building performance assessments. This paper establishes such climatological information for the capital Thimphu and presents an investigation of building physics properties of traditional and contemporary building types. In a one month field study 10 buildings were surveyed, looking at building air tightness, indoor climate, wall U-values and water absorption of typical wall construction materials. The findings highlight comparably high wall U-values of 1.0 to 1.5 W/m²K for both current and historic constructions. Furthermore, air tightness tests show that, due to poorly sealed joints between construction elements, windows and doors, many buildings have high infiltration rates, reaching up to 5 air changes per hour. However, the results also indicate an indoor climate moderating effect of more traditional earth construction techniques. Based on these survey findings basic improvements are being suggested.
KW  - Luftdichtheit
KW  - Wärmedurchgangszahl
KW  - Raumklima
KW  - Monitoring
KW  - Himalaja
KW  - Building monitoring
KW  - Air tightness
KW  - U-value
KW  - Indoor climate
KW  - Himalaya
Y1  - 2017
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170419-31393
UR  - http://dx.doi.org/10.1016/j.esd.2017.03.001
SP  - 48
EP  - 66
ER  - 
TY  - JOUR
A1  - Semar, Olivier
A1  - Schönhardt, Matthias
A1  - Witt, Karl Josef
T1  - Climatic induced changes of radiological and chemical properties in an uranium tailing deposit – Equipment and first results -
N2  - Monitoring systems usually used to control tailings, primarily pore water pressure gages and observation wells, are not self evidently representative for mechanical considerations. Therefore an effective risk assessment and risk management is necessary to get additional information to determine indicators for critical situations. Several tailings observations showed an alteration in chemical and radiological parameters during rising saturation induced by climatic changes. These parameters are appropriate to stress indices. A systematically research on correlations between changes in stress indices and the phreatic surface is part of the research activities of the Bauhaus University in Weimar. The contribution presents the principle of this kind of monitoring, the soil mechanical background, details of the equipment and first results.
KW  - Monitoring
KW  - Klimaänderung
KW  - uranium tailing deposit
KW  - monitoring
KW  - radiological and chemical properties
Y1  - 2005
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20111215-8146
ER  -