Grundfos retrofit cuts energy use by 60% for Dubai Tower
The annual saving of AED116,000 meant that the new installation paid for itself in just 9 months.
One of Grundfos’ key initiatives in the UAE is replacing old and inefficient pumps with the latest high-efficiency Grundfos models, supporting the country with its green mission. An example of such a project by Grundfos is Dubai’s Green Tower, a 17-storey commercial building in the City’s Deira district, consuming additional halved annual electricity costs.
Built at the height of Dubai’s construction boom in the late 1990’s, the Tower’s chilled water system had become very energy hungry and expensive to run. Heeding the City’s call to improve energy and water consumption, therefore, engineers called in Grundfos to carry out an Energy Check to identify where savings could be made.
Working alongside Dubai-based Energy Consultants, TAKA Solutions, Grundfos energy specialists found that the old pumps had become increasingly inefficient to operate and were not able to react to changes in demand and wasting energy. It was estimated that a change to modern high-efficiency Grundfos pumps and controls could halve electricity demand, reducing the building’s total energy.
In addition to cutting energy use, the challenge for the team was to cut system operating costs and reduce the very high level of pump maintenance and associated costs, so it was decided that a total replacement was necessary.
Grundfos managing director for Gulf, Levant & Pakistan, Kostas Poulopoulos, said: “We estimate that majority of the pumps installed across the UAE are old and inefficient, and we are helping to address this issue, as part of our support for sustainability goals of UAE’s and the United Nation’s.
“Dubai, in its aspiration to become one of the world’s most innovative and sustainable cities, has set a target of retrofitting 30,000-plus old buildings. Green Tower provides the template for others to follow – and is a great example of what can be achieved.” In order to ensure a seamless changeover, the work was meticulously planned on a step-by-step basis, with Grundfos partner, M.A.H.Y Khoory, ensuring all material deliveries to site were precisely scheduled to support the sequenced shutdown.
The project was completed without problems, with the new pump system achieving the same output as the previous network, using much less energy consumed. The annual saving of AED116,000 meant that the new installation paid for itself in just 9 months.
After completion, it was found that that the new pump system more than matched the target, cutting annual energy consumption for the building from 51.6 kW to 21.3 kW, a reduction of 60%. By reducing stress on the system using the latest Grundfos Smart pumping systems, the team also achieved major savings in maintenance time and costs.