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Retrofitting Electrically Heated Single-Family Houses to Net-Zero Energy

Bernardo, Ricardo LU orcid and Davidsson, Henrik LU (2015) International Solar Energy Society, ISES Solar World Congress 2015, SWC 2015 p.66-72
Abstract

Only in Sweden, single-family houses account for approximately 30% of energy use in all buildings and a large part uses only electricity for heating. The potential for improvements on energy efficiency in these houses is large. This study theoretically investigates retrofitting of electrically heated Swedish single-family houses by using an air-source heat pump for both space heating and domestic hot water. Combination with solar collectors and solar cells were also theoretically investigated. Since this solution is an add-on to the existing heating system the investment cost can be reduced compared with a new heat pump installation for domestic hot water. The total annual energy reduction for domestic hot water and space heating in a... (More)

Only in Sweden, single-family houses account for approximately 30% of energy use in all buildings and a large part uses only electricity for heating. The potential for improvements on energy efficiency in these houses is large. This study theoretically investigates retrofitting of electrically heated Swedish single-family houses by using an air-source heat pump for both space heating and domestic hot water. Combination with solar collectors and solar cells were also theoretically investigated. Since this solution is an add-on to the existing heating system the investment cost can be reduced compared with a new heat pump installation for domestic hot water. The total annual energy reduction for domestic hot water and space heating in a Swedish single-family house when using the combined heat pump and solar thermal collectors was estimated to be roughly 70%. The remaining electricity demand for electric appliances can be covered by approximately 10 kWp solar cells therefore reaching net-zero energy level.

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Please use this url to cite or link to this publication:
author
and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Heat pump, Net-zero energy houses, Retrofit, Single-family houses, Solar thermal
host publication
Proceedings of the ISES Solar World Conference 2015
pages
7 pages
publisher
International Solar Energy Society
conference name
International Solar Energy Society, ISES Solar World Congress 2015, SWC 2015
conference location
Daegu, Korea, Republic of
conference dates
2015-11-08 - 2015-11-12
external identifiers
  • scopus:85016990269
ISBN
9783981465952
DOI
10.18086/swc.2015.08.08
language
English
LU publication?
yes
id
4734d9d3-b15b-462f-8ddd-21b0e6f01744
date added to LUP
2017-02-28 12:29:17
date last changed
2022-05-02 17:59:06
@inproceedings{4734d9d3-b15b-462f-8ddd-21b0e6f01744,
  abstract     = {{<p>Only in Sweden, single-family houses account for approximately 30% of energy use in all buildings and a large part uses only electricity for heating. The potential for improvements on energy efficiency in these houses is large. This study theoretically investigates retrofitting of electrically heated Swedish single-family houses by using an air-source heat pump for both space heating and domestic hot water. Combination with solar collectors and solar cells were also theoretically investigated. Since this solution is an add-on to the existing heating system the investment cost can be reduced compared with a new heat pump installation for domestic hot water. The total annual energy reduction for domestic hot water and space heating in a Swedish single-family house when using the combined heat pump and solar thermal collectors was estimated to be roughly 70%. The remaining electricity demand for electric appliances can be covered by approximately 10 kWp solar cells therefore reaching net-zero energy level.</p>}},
  author       = {{Bernardo, Ricardo and Davidsson, Henrik}},
  booktitle    = {{Proceedings of the ISES Solar World Conference 2015}},
  isbn         = {{9783981465952}},
  keywords     = {{Heat pump; Net-zero energy houses; Retrofit; Single-family houses; Solar thermal}},
  language     = {{eng}},
  pages        = {{66--72}},
  publisher    = {{International Solar Energy Society}},
  title        = {{Retrofitting Electrically Heated Single-Family Houses to Net-Zero Energy}},
  url          = {{http://dx.doi.org/10.18086/swc.2015.08.08}},
  doi          = {{10.18086/swc.2015.08.08}},
  year         = {{2015}},
}