
AUDIT ENERGETIQUE DU BATIMENT DE L’ONG COMPASSION INTERNATIONAL BURKINA FASO A OUAGADOUGOU
ABSTRACT
The energy audit carried out last March by ANEREE on behalf of the NGO COMPASSION
INTERNATIONAL had two specific objectives. Firstly, to ensure the safety and long-term comfort
of staff and equipment, and secondly, to optimize the building's energy bill. This energy audit was
based on three major studies: analysis of the internal electrical network, analysis of the electrical
installations and analysis of the energy situation (electricity billing, energy balance and building
comfort). All of these studies were complementary, given the limitations of each. The network
analysis revealed that COMPASSION INTERNATIONAL's internal installations are balanced and
stable, with significant harmonic currents. To remedy the anomalies associated with these
harmonics, we have proposed a harmonic filter which is included in the proposed compensation
system. As for the billing analysis, it revealed power overruns and cos phi bonuses. We proposed
that the structure should keep the same power for economic reasons, despite the recorded overruns.
We also recommended extending their grid-injection solar system by 18.32 kWp to reduce these
power overruns. In addition, we proposed the installation of 20 kVAR anti-harmonic compensation
batteries to benefit from the maximum 8% bonus. The power balance analysis shows that, in its
current state, the transformer's power is adapted to the building's loads. This analysis also shows
that the generator is oversized, causing it to operate at a mediocre load rate, but below the
recommended values. The energy balance shows that air-conditioning and the R+1 level are the
biggest energy consumers. This led us to propose replacing all the standard splits with inverter
splits, for savings of up to 30%. Thermal comfort shows that 85% of the premises are
uncomfortable, requiring the installation of 42 inverter air conditioners to ensure comfort. Visual
comfort assessed shows that 80% of premises are poorly lit, requiring the installation of 120 lamps
to achieve maximum comfort. All the proposed energy improvements, if implemented, will reduce
energy bills by up to 36.06% and improve occupant comfort.
Key Words
Energy and electrical audits
Safety and comfort
Energy performance
Power and energy balances