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Performance of a multifunctional PV/T hybrid solar window

Davidsson, Henrik LU ; Perers, Bengt and Karlsson, Björn (2008) Passivhus Norden 2008 In [Host publication title missing] p.44-51
Abstract
A PV/T collector have been developed and evaluated at the department of Energy and Building Design at the

Technical University of Lund, LTH in Sweden. The PV/T, a “multifunctional solar window” made of PV cells

laminated on solar absorbers, is placed in a window behind the glazing. The solar window is built into a single

family house, Solgården, in Älvkarleö outside Gävle in the eastern part of Sweden. To reduce the costs of the

solar electricity, reflectors have been placed in the construction to focus the radiation onto the solar cells. In this

way expensive solar cells can be replaced by considerably cheaper reflector material. The tiltable reflectors give

the user a possibility to... (More)
A PV/T collector have been developed and evaluated at the department of Energy and Building Design at the

Technical University of Lund, LTH in Sweden. The PV/T, a “multifunctional solar window” made of PV cells

laminated on solar absorbers, is placed in a window behind the glazing. The solar window is built into a single

family house, Solgården, in Älvkarleö outside Gävle in the eastern part of Sweden. To reduce the costs of the

solar electricity, reflectors have been placed in the construction to focus the radiation onto the solar cells. In this

way expensive solar cells can be replaced by considerably cheaper reflector material. The tiltable reflectors give

the user a possibility to control the amount of radiation being transmitted into the building. The reflectors can

also be used to reduce the thermal losses through the window.

A model for electric and hot water production was developed. The simulation program, in Excel, can perform

yearly energy simulations where different effects such as shading of the cells or the glazing effects can be

included or excluded. The simulation can be run with the reflectors in an active, up right, position or with the

reflectors in a passive, horizontal, position. The simulation program was calibrated against a prototype window

placed in Lund in the south of Sweden and against the solar window in Solgården. The calculation model serves

as a basis for the module written for the simulation program TRNSYS. A “TRNSYS-deck” was built and

calibrated for the building Solgården.

Yearly simulations of the energy balance for a house with the solar window was compared to simulations where

the 16m2 solar window was replaced with an 8m2 normal window. The results show that the annual amount of

auxiliary energy is lower with a developed solar window, including low-e coating on the glazing, compared to

the normal window case. The developed solar window has considerable lower U-values than the existing solar

window. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
[Host publication title missing]
pages
8 pages
publisher
Passivhus Norden
conference name
Passivhus Norden 2008
language
English
LU publication?
yes
id
ae73bc4b-af76-4ac4-9a74-b38cd50e270d (old id 3405794)
alternative location
http://vbn.aau.dk/files/16144435/Passivhus_Norden_2008_conference_proceedings.pdf
date added to LUP
2014-04-28 11:22:30
date last changed
2016-10-07 15:08:02
@misc{ae73bc4b-af76-4ac4-9a74-b38cd50e270d,
  abstract     = {A PV/T collector have been developed and evaluated at the department of Energy and Building Design at the<br/><br>
Technical University of Lund, LTH in Sweden. The PV/T, a “multifunctional solar window” made of PV cells<br/><br>
laminated on solar absorbers, is placed in a window behind the glazing. The solar window is built into a single<br/><br>
family house, Solgården, in Älvkarleö outside Gävle in the eastern part of Sweden. To reduce the costs of the<br/><br>
solar electricity, reflectors have been placed in the construction to focus the radiation onto the solar cells. In this<br/><br>
way expensive solar cells can be replaced by considerably cheaper reflector material. The tiltable reflectors give<br/><br>
the user a possibility to control the amount of radiation being transmitted into the building. The reflectors can<br/><br>
also be used to reduce the thermal losses through the window.<br/><br>
A model for electric and hot water production was developed. The simulation program, in Excel, can perform<br/><br>
yearly energy simulations where different effects such as shading of the cells or the glazing effects can be<br/><br>
included or excluded. The simulation can be run with the reflectors in an active, up right, position or with the<br/><br>
reflectors in a passive, horizontal, position. The simulation program was calibrated against a prototype window<br/><br>
placed in Lund in the south of Sweden and against the solar window in Solgården. The calculation model serves<br/><br>
as a basis for the module written for the simulation program TRNSYS. A “TRNSYS-deck” was built and<br/><br>
calibrated for the building Solgården.<br/><br>
Yearly simulations of the energy balance for a house with the solar window was compared to simulations where<br/><br>
the 16m2 solar window was replaced with an 8m2 normal window. The results show that the annual amount of<br/><br>
auxiliary energy is lower with a developed solar window, including low-e coating on the glazing, compared to<br/><br>
the normal window case. The developed solar window has considerable lower U-values than the existing solar<br/><br>
window.},
  author       = {Davidsson, Henrik and Perers, Bengt and Karlsson, Björn},
  language     = {eng},
  pages        = {44--51},
  publisher    = {ARRAY(0x7d70e80)},
  series       = {[Host publication title missing]},
  title        = {Performance of a multifunctional PV/T hybrid solar window},
  year         = {2008},
}