Cairo West Residence (Egypt)

A residential compound developed by ALDAU DEVELOPMENT and located on Cairo Alex desert Road in close proximity to the Grand Egyptian Museum. It consists of a diverse range of residential units in multi-family buildings and one boutique hotel. The project will also comprise of several carefully designed services and facilities. The BUILD_ME team will focus on one representative buildings of Cairo West Residence compound.

The project aims to create a place that provides residents with the high levels of comfort based on smart tech solutions facilitated by an advanced internet network for smoother living and entertainment conditions. The target group is upper middle-class families living in Greater Cairo. The compound is composed of a diverse range of residential units in multi-family buildings and one boutique hotel. The project will also comprise of several carefully designed services and facilities. The total compound area is 45,000 sqm including 14 Multi-family houses and one Boutique Hotel, while BUILD_ME will focus on one MFH (Building 4) of 3,000 sqm.

Comparing the baseline which represents the business as usual for the specific building type in the given country with the current planning details provided by the project developer as shown in Figure 1 it can be stated that:

• The global cost of the BAU construction of such a building are around 157 Euro/m² and with that higher than the proposed design cost which are calculated as 125 Euro/m². That is equal with global cost savings of 20%.
• Furthermore, the proposed design is more energy efficient in comparison to the BAU cases (final energy savings of 25%).

The analysis of the cost optimal energy efficiency and renewable energy measures have resulted in the following key components illustrated in the table below as shown in Figure 2. It shows that the building envelope is significantly enhanced compared to the business as usual and current plan. Special attention is given to highly efficient cooling supply and the use of solar energy to generate electricity (PV). This leads to energy savings and emission reduction.

After the exchange with the project developer, the following components have been assessed as feasible and will be taken into account in the further planning (also illustrated in the table below marked in bold as shown in Figure 3):

• Improvement of the building envelope
• (Solar Glazing)
• Higher efficient VRF system
• PV on the roof

The suggested measures of the selected package and the optimized lead to a significant decrease in energy demand and cost savings as shown in Figure 4. The energy savings range between 66-72 % compared with the baseline (BaU), while global costs savings reach 60% for the selected package and 71% for the optimized solution