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Typical residential villa with 180 m² floor space in the Rabat-Casablanca agglomeration. The villa is a demonstration building on the  campus of the National School of Architects in Rabat.

Partners:

Ecole Nationale d''Architecture (ENA) bensaid@archi.ac.ma

Construction of a typical residential villa  on the campus of the National School of Architects in Rabat to demonstrate energy  savings, ecological benefits and improvement of living comfort in such  buildings in costal regions. The target is to show that the higher investment  costs of the low energy house compared to a standard house will be paid back by  lower energy consumption.

At the same time the pilot project will be used  to train students of the school who will promote this type of building towards  their future customers. It is planned to derivate another type of residential  home for the dry continental climate inside the country.

The energy concept is based on passive  design measures and on the use of renewable energies including solar thermal  and an electrical air / water heat pump for heating and cooling purposes.

Profitability:
Compared to a conventional building, energy  savings of nearly 75% are achieved with the pilot project. Even if the initial  investment costs are more than 20% higher than for a standard urban villa, they  are paid back within less than 10 years, which makes the project and  economically attractive solution.

The energy demand of the house for heating  as well as cooling - compared to current building practice - is reduced  significantly by insulation, shading and the use of internal mass for heat/cold  buffering. The reduced remaining energy demand is covered by an efficient  combined solar/heat pump system, together with a night ventilation system. This  will assure a constant indoor climate throughout the year.

Passive measures with high/moderate  cost-efficiency:

 
• insulation of building
 
• overhang shading elements
 
• use of internal mass for heat/cold buffering
 
• natural night ventilation

Active measures

 
• solar water heating
 
• electrical air / water heat pump for space heating and cooling 

Compared to a conventional building energy  savings of 74% are achieved in the Pilot Project.

Due to relatively high energy prices in Morocco,  the MED-ENEC pilot project has already a reasonable cost-efficiency with a pay back  period of approx. 10 years (graph 1)
  Graph 1
 

When benefiting from learning and scale  effects in the framework of a large building program, and if using only the  most cost-efficient technologies, the "replicable solution" becomes a profitable  investment (graph 2)

Additional advantages that are difficult to  quantify comprise reduced needs for energy subsidies and energy imports as well  as environmental and health benefits.

Graph 2
   

Moroccan PP in progress, click here for an overview.

Download PP Poster Morroco here.