Abstract
Mechanical ventilation with heat recovery (MVHR) is increasingly being promoted in the UK as a means of reducing the CO2 emissions from dwellings, and installers report growing activity in the retrofit market. In parallel with a survey of householder preferences and practices, the behaviour of a whole-house MVHR system installed in an experimental house, purpose built to typical 1930s standards, has been simulated.
The range of air permeability values corresponded to those achieved in a retrofit upgrading process carried out on the house. In the house considered, air permeability, as measured in a 50 Pa pressurisation test, must be reduced below 5 m3/m2.h for MVHR to make an overall energy and CO2 saving. This required a level of disruption that would be unlikely to be tolerated by owners of solid wall dwellings.
The range of air permeability values corresponded to those achieved in a retrofit upgrading process carried out on the house. In the house considered, air permeability, as measured in a 50 Pa pressurisation test, must be reduced below 5 m3/m2.h for MVHR to make an overall energy and CO2 saving. This required a level of disruption that would be unlikely to be tolerated by owners of solid wall dwellings.
| Original language | English |
|---|---|
| Title of host publication | COBRA 2011, Proceedings of RICS Construction and Property Conference |
| Pages | 430-440 |
| Number of pages | 11 |
| Publication status | Published - 2011 |
| Event | RICS Annual Construction, Building and Real Estate Research Conference 2011 - Salford, United Kingdom Duration: 12 Sept 2011 → 13 Sept 2011 |
Conference
| Conference | RICS Annual Construction, Building and Real Estate Research Conference 2011 |
|---|---|
| Abbreviated title | COBRA 2011 |
| Country/Territory | United Kingdom |
| City | Salford |
| Period | 12/09/11 → 13/09/11 |
Keywords
- airtightness
- dwellings
- householders attitudes
- mechanical ventilation
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