dc.contributor |
Arias, Jaime |
dc.contributor.author |
Aubach Arqué, René |
dc.date |
2012 |
dc.identifier.uri |
http://hdl.handle.net/2099.1/20115 |
dc.language.iso |
eng |
dc.publisher |
Universitat Politècnica de Catalunya |
dc.rights |
Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.rights |
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject |
Àrees temàtiques de la UPC::Edificació::Materials de construcció::Vidre |
dc.subject |
Àrees temàtiques de la UPC::Edificació::Instal·lacions i acondicionament d'edificis |
dc.subject |
Àrees temàtiques de la UPC::Energies::Aspectes socials |
dc.subject |
Àrees temàtiques de la UPC::Edificació::Construcció sostenible |
dc.subject |
Microclimatology |
dc.subject |
Glass construction |
dc.subject |
Sustainable buildings |
dc.subject |
Greenhouses -- Environmental engineering |
dc.subject |
Dwellings -- Energy consumption |
dc.subject |
Microclimatologia |
dc.subject |
Façanes de vidre |
dc.subject |
Construcció en vidre |
dc.subject |
Edificis sostenibles |
dc.subject |
Hivernacles -- Enginyeria ambiental |
dc.subject |
Habitatges -- Consum d'energia |
dc.title |
Design of a microclimate for improving thermal quality |
dc.type |
info:eu-repo/semantics/bachelorThesis |
dc.description.abstract |
The idea of benefiting from a glasshouse to create a local microclimate between two
buildings is not new, around 1985 such a multi-occupancy block was built in Hagsätra, in
the south of Stockholm. Four buildings were constructed around a glazed courtyard
which acts as a large solar collector. It is clear that in comparison with conventional
buildings, glazing gives more temperate space “for the same price”. The idea is that a
glass building offers an indoor quality that can be profited for having a comfortable
space enjoyable by people throughout the year. The energy required for conditioning it
depends on the activity that wants to be performed inside.
In this thesis, a glass structure consisting of a roof and two frontal façades was simulated
using the simulation programme DesignBuilder 3.0.0.105. The model is based on a real
proposal for covering the space between two existing buildings in KTH main campus.
Different possibilities concerning the indoor climate related to the activity that wants to
be set in it have been simulated. The selected option has no mechanical ventilation and
no supply of cooling since it is provided of a natural ventilation system designed for
evacuating the warm air when the microclimate reaches temperatures above the
comfort level. A heating system has been installed to maintain the indoor temperature
to a minimum of 5oC.
The results showed that when selecting the glazing of the microclimate special attention
has to be put to the g-value. It influences significantly the maximum temperature that
can be reached inside and it affects the energy demand as well. Choosing a very high or
a very low g-value can suppose a difference of 5oC concerning the indoor temperature.
At the same time, using very high g-values can suppose a 30% reduction in energy bills
comparing to the use of low g-values which act as if they had a shading device
incorporated. Finally, installing high reflectance-low transmittance shades can help to
reduce the indoor temperature up to 3oC which can help to avoid overheating problems
caused by the use of high g-values.
A microclimate makes the average temperature per month increase comparing it to the
outdoors. The increase is larger when the number of hours with sun is higher. During
months with virtually no sun at all, the microclimate has only marginally higher
temperature than the outside temperature. At night or at other times when there is no
sunshine, the temperature is also a few degrees above the outside temperature due to
the influence of the two adjoining buildings which act as a big thermal mass trapping the
heat. However, when the sun is out, the differences between the temperature in the
microclimate and outdoors may be between 8oC and 10oC. |
dc.description.abstract |
Outgoing |