Abu Dhabi’s Department of Energy (DoE) has launched the Abu Dhabi Cooling Load Manual (CLM), in support of the Abu Dhabi Energy and Water Efficiency Strategy 2030.
Air conditioning (AC) systems account for 60–70% of electricity consumption in buildings across the UAE. These systems are often oversized by 25%–35%. Proper sizing of these systems can lead to significant savings, with potential reductions of up to 35% in installed AC costs. This translates to an annual savings of US $153mn across all new buildings in Abu Dhabi, said a statement.
Eng. Ahmed Mohammed Al Rumaithi, Undersecretary, Abu Dhabi Department of Energy said, “The department’s efforts are part of an integrated vision aimed at enhancing resource efficiency and advancing the foundations of sustainable development in Abu Dhabi through the development of regulatory and technical frameworks that support the creation of a more efficient, resilient and sustainable energy system.”
He added, “This manual contributes to the department’s efforts to enable relevant stakeholders to adopt more efficient solutions in the construction and urban development sectors, enabling improved energy demand management, the optimal use of resources, and the advancement of sustainable development across the emirate”.
Abdulaziz Mohammed Alobaidli, Director General of Regulatory Affairs, Department of Energy commented, “The accurate cooling load calculations and the selection of appropriate systems contribute to reducing costs, improving resource efficiency, and delivering long-term value for both developers and consumers, while supporting the emirate’s objectives of building a more efficient and sustainable energy system.”
“This reflects the Department of Energy’s continued commitment to developing the regulatory and technical frameworks around energy efficiency and responsible resource management. It also reinforces Abu Dhabi’s position as a leading hub for sustainable solutions and innovation that enable a more efficient and resilient future,” he added.
The CLM addresses the issue of oversized AC systems by providing clear, data-driven guidance and best practices. These guidelines assist in accurately calculating cooling loads and selecting appropriately sized equipment. By enhancing design precision, the manual contributes to reduced equipment and infrastructure costs, lower electricity consumption, decreased operational expenses, improved occupant comfort, and extended equipment lifespan.
The DoE said the CLM aligns with Abu Dhabi codes and international standards such as ASHRAE and CIBSE. It provides practical recommendations to avoid common overdesign factors, including unrealistic assumptions, excessive margins, and inadequate consideration of load diversity. The manual also explains how adequate orientation and shading design strategies (passive design), proper zoning, and accurate assessment of heat gains can significantly reduce cooling demand when integrated early in the process.
To facilitate adoption, the DoE developed a Cooling Load Verification Tool (CLVT), allowing developers, designers, and government entities to benchmark their cooling calculations against the CLM, identify possible over design, and estimate potential savings.
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