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

Bernardo, Ricardo LU and Davidsson, Henrik LU (2015) International Solar Energy Society, ISES Solar World Congress 2015, SWC 2015 In Proceedings of the ISES Solar World Conference 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
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
in
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
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
2017-05-11 11:42:54
@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},
  keyword      = {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},
  year         = {2015},
}