The Situation
A large, prestigious development by Al Marasem Development within the Golden Square in New Cairo, Egypt needed Grundfos Egypt's expertise to consistently supply water to the project.
The Fifth Square gated community is a large-scale project comprised of a shopping mall, hotel apartments, residential villas, and standalone apartments spread over 158 feddans (equivalent to 663,600m2).
The initial design called for a single end-suction booster to supply water throughout the entire network. When presented with this design, the team at Grundfos Egypt saw a better, more efficient way of controlling the water supply.
To better control the system, we decided to use two smaller, vertical multi-stage boosters to provide better redundancy, increased efficiency, and greater water savings
The Solution
"To better control the system, we decided to use two smaller, vertical multi-stage boosters to provide better redundancy, increased efficiency, and greater water savings," said Ezz Mamdouh, Senior Sales Development at Grundfos Egypt, Libya, and Sudan.
The water network was divided into two systems: System 1 and System 2, with a Master/Slave set-up. The systems were coordinated to run using standard operating set-points and alternative set-points. When the master system works at full-speed or an alarm sounds, the slave system is activated by a digital output.
"We also designed the system so that it also alternates the Master /Slave arrangement by a timer to ensure that they get equal operating hours," said Mamdouh.
By using two systems, Grundfos ensured that there is redundancy in case a system fails. By alternating between System 1 and 2, the load on the pumps is balanced, ensuring a longer lifespan for the pumps.
By using two Hydro MPC-E systems, Grundfos Egypt ensured that there is constant pressure within the network by making adjustments to the speed of the pumps, which leads to consistent water pressure when and where it is needed.
Grundfos Supplied
2 x Hydro MPC-E 6 CR 95-4with features such as Master/Slave functionality and alternative set-point influence
Hydro MPC-E
The Outcome
The high-efficiency CR pumps led to a significant 75kg reduction in CO2 emissions, as the system's energy consumption drops by 30% when operating at full capacity. This decrease is a result of the system changing its energy output from 640kW/hour to 450kW/hour at peak load.
"Grundfos Hydro boosters are a testament to our commitment in meeting customer demands," continued Mamdouh. "With a multitude of functionalities, these systems effortlessly align with diverse needs, ensuring a seamless harmony between performance and requirements."