OP04 Student house, Maison des Industries Agricoles et Alimentaires, Paris

projetsLAMP — Mon, 26 May 2014 10:26:48 +0000

Current status:

DELAYED PROJECT

Country:

France

Building Owner:

Maison des Industries Agricoles et Alimentaires

Consulting EuroPHit Partner:

LaMP - Contact person Simon Camal

Existing treated floor area (usable floor space):

2 500.00 m²

Key words:

student dormitories

modernisation and extension

complete removal of existing external walls

decentralised ventilation system with heat recovery

Original situation:

The student house has been finished in 1956, it comprises 1500 m² of student rooms. The existing walls are made of a 25 cm thick concrete beam structure filled with hollow brick on the facades and 45 cm thick stone on gable wall, no insulation. Ventilation is poor as students tend not to open windows especially in winter, and mould has been detected on the walls of various rooms. Services (especially ventilation and hot water) are inefficient and will be revised. Windows are aluminium double pane in rooms, PVC double pane in bathrooms, and have a very poor airtightness. No insulation on the concrete roof or on the concrete slab.

A major challenge for this project is to install efficient mechanical ventilation with heat recovery on the outside of the existing envelope. The foreseen extension of the envelope through a steel framework will require extra care in planning and building.

Modernisation proposal:

All layers which are not load-bearing will be destroyed: brick fillings, interior walls and plenums. A new exterior shell combining steel and bio-based insulation (hemp, straw…) will be erected to extend the existing levels. Triple pane windows of passive house quality will be inserted in the insulation layer.Building services (ventilation, heating) will be installed into shafts prepared in the new shell. Fresh air will be heated via a hydraulic heating coil, supplied in rooms and extracted in bathrooms with limited duct lengths. Different mechanical ventilation units with heat recovery will supply independently rooms, services rooms and kitchen.Two new levels will be added on the existing roof and connected to the steel structure.The design team considers switching from district heating to gas boiler + 100 m² free standing solar thermal panels. After 2016, a PV system could be installed on the roof and rented to an energy facility.

Address:

5 Boulevard Jourdan

75014 Paris

France

CS01 Rochestown Home for Elderly in Dun Loaghaire

mosart — Fri, 23 May 2014 09:32:08 +0000

Current status:

COMPLETED PROJECT x

Country:

Ireland

Building Owner:

Dun Laoghaire Rathdown (DLR) County Council

Consulting EuroPHit Partner:

MosArt - Contact person Mariana Moreira

Existing treated floor area (usable floor space):

1 613.00 m²

Link in Passive House Database:

Nursing home | retreat home (EnerPHit Retrofit), ID: 4261

Passive House Days 2015:

Visiting details

Key words:

elderly home

modernisation and extension

combined heat and power

multiple MVHR units

Original situation:

The existing building is a single two-storey block of 34 apartments built during the early 1970’s. There are modest common facilities, including a kitchen and dining room. The floors, walls (external and internal) and roof comprise poured concrete construction with little or no insulation incorporated. The external walls are pebble dash finished. This building has small to moderate size window openings and relatively low floor to ceiling height which will compromise ventilation ducting for the retrofitting proposal. Ventilation is mostly natural, using opening window sections but also some room-based fans. The building is on an east-west axis in terms of solar gains with heavy shading to the northwest and quite open to the southeast. There is an existing plant room on the roof of the two storey building with a boiler house separate to the building.

Modernisation proposal:

The proposed development comprises the addition of another whole floor on top of the existing building as well as minor extensions to accommodate vertical circulation. Due to increased accommodation size the resulting number of apartments will remain at 34. The retrofitting of the existing structure involves external wall insulation and Passive House certified windows and doors, as well as the new top level comprising walls of aerated concrete block structure with external insulation and lightweight metal deck roof with the same windows and doors. A MVHR unit will be installed in each apartment as well as for each community areas and circulation areas. A central micro CHP (Combined Heat and Power) with gas condenser boiler will be the source of heat to all radiators installed throughout the building. This CHP will also be the source of heat to the domestic hot water tank. We are aiming to install, in the near future, solar hot water panels to back up the hot water generation and further decrease the primary energy demand of this building.

Dun Laoghaire Rathdown Architects Department are the designers of the project.

Efficiency improvement:

Current situation:

The Tender process started last July 2014 and the refurbishment on site works started on the 10^th November 2014. The programme of works for the first retrofit step is due to be completed in the eraly part of 2016.

Challenges of the project:

At design stage the main challenge of this project in relation to the EnerPHit Standard was the ventilation strategy for the entire project. Several options were considered, from centralised ventilation system, to partially centralised and decentralised to completely decentralised.

Construction photos (click to view gallery):