Electric heated windows
Ver/
Fecha
2013Versión
Acceso abierto / Sarbide irekia
Tipo
Proyecto Fin de Carrera / Ikasketen Amaierako Proiektua
Impacto
|
nodoi-noplumx
|
Resumen
The project aim is to investigate the thermal comfort and the energy use aspects of
electric heated windows. New technologies are being developed by some companies
around the world. These companies develop homogeneous space heating for the
building and therefore, avoid using the typical water radiators. This is a new technology
that could be interesting for research and develop
ed
for the n ...
[++]
The project aim is to investigate the thermal comfort and the energy use aspects of
electric heated windows. New technologies are being developed by some companies
around the world. These companies develop homogeneous space heating for the
building and therefore, avoid using the typical water radiators. This is a new technology
that could be interesting for research and develop
ed
for the near futures application with
a high possibility for expansion in the markets in a few years. The reason for this is
clear. The best conditions for thermal comfort is when all the room surfaces and the
indoor air have the same temperature
of
around 20-22°C.
For example, when the
outdoor temperature is around 1 or 2 ºC, the temperature of the glass decreases to
around 17 ºC. The glass facade becomes significantly colder than any other surfaces or
the temperature in the room. Therefore, the radiant heat exchange to the cold window is
much larger than towards the room,
so the operative temperature deteriorates
significantly and
consequent
ly
causes thermal discomfort and is a good reason for the
installation of electric heated windows.
The project is based in the new building in the Sandvik Coromant that is going to be
built during this summer 2013
in Sandviken(Sweden).
Specialglas is a Swedish
company that provides the electric heated windows that
will be installed in a big surface
area of 57
.
This building is energetically analyzed and simulated with the IDA,
building simulation program. Hand calculations are also made for demonstrating these
results obtained. Furthermore, the positive results obtained in the thermal comfort
aspects are given in this project; as for instance the improvement in the thermal comfort
index near the window, where the
“
predicted percentage of dissatisfied
”
(PPD) for the
occupant situated one meter far for the window, varies from 16% with conventional
windows to be around 12
%,
only when the electric heated windows are working at the
minimum supply power. The energy that is needed to maintain the same level of the
working electric heated windows is difficult to obtain. This is because there are a lot of
uncontrollable factors. Even though there is estimated that the energy demand will
increase with 15% of the total energy demand. [--]
Materias
Ventanas calentadas con electricidad,
Electric heated windows
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa eta Elektronikoa Saila
Titulación
Ingeniería Técnica de Telecomunicación, especialidad Sonido e Imagen /
Telekomunikazio Ingeniaritza Teknikoa. Soinua eta Irudia Berezitasuna