PROCEEDINGS OF ONE-DAY SEMINAR - The energy future of existing buildings in Brussels: between preservation and performance - 11/12/14 - (Page 48)
ONLINE
BRUSSELS HERITAGE - ONE-DAY SEMINAR - 11/12/2014
FINANCIAL IMPACT OF ENERGY EFFICIENCY
MEASURES IN LE LOGIS AND FLORÉAL
JONATHAN FRONHOFFS
BUREAU CENERGIE CVBA
TWO HOUSES IN THE GARDEN CITY LE LOGIS AND FLORÉAL WERE EXAMINED.
THE GATHERED DATA WERE EXTRAPOLATED AND A MODEL CREATED WHICH
CAN BE APPLIED TO OTHER BUILDINGS IN THE GARDEN CITY. A HIERARCHY OF
INTERVENTIONS WAS DRAWN UP IN RELATION TO THEIR IMPACT ON ENERGY
CONSUMPTION AND RETURN ON INVESTMENT TIME.
In the course of this study two
buildings were audited: a threefaçade building on Kruisbooglaan
and a two-façade building on
Ibissenstraat. They were examined in order to extrapolate
energy saving measures for the
entire garden city at a later time.
The measures of course fit into
the management plan; a link is
made between the audit and the
management plan. For example,
the course of the ventilation tube
is clearly marked, through the
roof or through the side façades,
in particular colours.
Firstly, all losses through the building shell and the characteristics
of each building were analysed
(fig. 1 and 2).
The roof of the Ibissenstraat building was not insulated and 75% of
the energy loss was found to take
place through the roof. The opposite is true for the Kruisbooglaan:
the roof was insulated and we
ascertained that a large portion of
the losses occurred through the
façades. This is a three-façade
building so it is logical that a higher
Fig. 1
Ibissenstraat 5 in WatermaalBosvoorde
(A. de Ville de Goyet, 2015 © GOB).
Fig. 2
Kruisbooglaan 34 in WatermaalBosvoorde
(A. de Ville de Goyet, 2015 © GOB).
Ibissenstraat 5
Kruisbooglaan 34
Heated
190 m²
137 m²
Volume
338 m³
475 m³
approx. 1930
approx. 1930
/
/
Built
Most recent major renovation
Fig. 3
Buildings studied (© Cenergie).
48 | Financial impact of energy efficiency measures in Le Logis and Floréal
Table of Contents for the Digital Edition of PROCEEDINGS OF ONE-DAY SEMINAR - The energy future of existing buildings in Brussels: between preservation and performance - 11/12/14
Contents
EDITORIAL
A WORD OF WELCOME
WHAT ARE THE REQUIREMENTS FOR THE ENERGY PERFORMANCE OF BUILDINGS WHEN RENOVATING?
ARCHITECTURAL HERITAGE AND ENERGY PERFORMANCE: COMPATIBILITY CHALLENGES?
URBAN FORMS, TYPOLOGY AND IMPROVING THE ENERGY EFFICIENCY OF OLD BRUSSELS BUILDINGS
THE LISTED HOUSES OF THE LE LOGIS AND FLORÉAL GARDEN CITIES ADAPTATIONS TO CURRENT ENERGY AND COMFORT NEEDS
FINANCIAL IMPACT OF ENERGY EFFICIENCY MEASURES IN LE LOGIS AND FLORÉAL
ANALYSIS OF UNCERTAINTIES IN DYNAMIC THERMAL SIMULATIONS FOR OLD HOUSING: A CASE STUDY OF ONE APPARTMENT AND ONE HOUSE IN THE PARIS REGION
RISK ANALYSIS FOR APPLYING INTERIOR INSULATION IN HISTORICAL BUILDINGS: A CASE STUDY OF THE FORMER VETERINARY SCHOOL IN ANDERLECHT
IEDER ZIJN HUIS: THE RENOVATION OF A MODERNIST SOCIAL HOUSING TOWER BLOCK
HE BRUNFAUT TOWER: PRESENTATION OF THE CONCEPTUAL DESIGN CHALLENGES OF A RENOVATION
PRESENTATION AND RESULTS OF THE “PLAGE” PROJECTS LOCAL ACTION PLANS FOR ENERGY MANAGEMENT
THE BELGIAN BUILDING RESEARCH INSTITUTE: A CONTRIBUTION TO HERITAGE MAINTENANCE EXPLORING THE TRAINING OF HERITAGE ADVISORS SPECIALISING IN ENERGY
SUSTAINABLE RENOVATION OF A BRUSSELS HOUSE: A CHALLENGE FOR BUILDING TRADESMEN
CONCLUSION
COLOPHON
PROCEEDINGS OF ONE-DAY SEMINAR - The energy future of existing buildings in Brussels: between preservation and performance - 11/12/14
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