Cooling tower fans
Energy-efficient electronically commutated (EC) fans for cooling towers
Cooling tower fan retrofit success story: Energy savings of 51% were achieved by retrofitting cooling tower fans.
KINFIT and ebm‑papst replaced the existing system with two AxiBlade EC fans. The retrofit took about seven hours. The project achieved a 51.25% energy-saving rate. Based on 6,912 annual operating hours, this results in electricity cost savings of over 16,000 RMB (about SGD 3,000). Factoring in labor and materials, total annual renovation benefits exceed 18,000 RMB (about SGD 3,300).
The aforementioned benefits of EC fans as AHU fans are just the tip of the iceberg. As ebm‑papst continues to innovate, our EC fans will be engineered with more smart and advanced features, enabling even further energy optimisation.
We highly recommend the below fans for your AHUs. If you'd like tailored support in fan selection, we recommend contacting us directly.
Reasons to upgrade your cooling tower fans
The direct benefits of energy-saving fans are clear – less energy consumed equates to lower operational costs. However, there are several other less prominent benefits that merit discussion.
Scientific consensus suggests that to counter the most severe effects of climate change, global carbon dioxide (CO2) emissions caused by human activities need to be reduced by around 45% from 2010 levels by 2030, aiming for net-zero emissions by 2050. The global temperature increase is closely linked to the cumulative amount of CO2 released into the atmosphere. Therefore, as long as emissions remain above zero, the planet will keep warming. As a result, the adverse impacts of climate change will continue to worsen as long as emissions persist.
One potential strategy to help reduce carbon emissions and support this global objective is the use of energy-saving technology like ebm‑papst's EC fans in buildings.
Source: Netzeroclimate.org
To enhance a building's energy efficiency and reduce overall consumption, it is vital to assess how energy is distributed throughout the structure. According to a 2018 study by the Building and Construction Authority (BCA), key contributors to a building's energy use include mechanical systems such as heating, ventilation, air conditioning (HVAC), lighting, and vertical transportation systems. Notably, cooling systems can account for up to 60% of a building's total energy consumption, while ventilation typically makes up around 10%.
HVAC systems utilize various types of equipment, including pumps and fans. Fans alone can consume up to 35% of the energy used within the HVAC system. Therefore, enhancing the energy efficiency of HVAC systems is essential for reducing a building’s total energy consumption.
Building systems like air handling units (AHUs), condensers, cooling towers, and fan coil units work together to maintain cooling and ventilation. A common element in these systems is the use of fans for air circulation. In older buildings in Singapore, many of these fans operate with Alternating Current (AC) motors, which were previously the industry standard. A highly effective strategy to reduce energy usage in these systems is to replace traditional AC fans with more efficient Electronically Commutated (EC) fans.
Sources: BCA and NCCS
There is a clear shift towards green building policies in the region. Hence, by utilizing EC fans in your build, there is a higher likelihood of meeting the requirements set out by the local government. Here are some examples in the Southeast Asia region:
Singapore: Singapore Green Building Masterplan, MEI Regime, Energy Conservation Act
Malaysia: Green Technology Masterplan 2017 - 2030
Thailand: Thailand Energy Efficiency Development Plan 2015-2036
Indonesia: Indonesia launches National Roadmap for Green Building Implementation
Vietnam: National Energy Efficiency Programme 2019 - 2030
Philippines: Republic Act 11285
Compared to traditional systems, our integrated EC fan system is designed to minimize energy waste. This means that less heat is generated, which often leads to reduced wear and tear, ultimately extending the product's lifespan.
This translates to lower operational costs. Additionally, products with a longer lifespan are generally seen as more environmentally friendly because they require fewer replacements.
The significance of sustainability is rising for companies in the market for office space, taking precedence alongside traditional considerations like location and talent. Increasingly, businesses seek low-carbon, high-quality buildings and are often willing to pay more for these sustainable spaces, even in a sluggish leasing market. According to JLL research, the "green premium" is 7.1% in North America, 9.9% in the Asia Pacific, and 11.6% in London. Kirsty Draper from JLL points out that office buildings contribute to a company's emissions. Consequently, sustainability is now a crucial aspect of real estate strategies as companies strive to meet targets and demonstrate their environmental commitments.
Source: JLL
Why choose ebm‑papst?
We aim to achieve climate-neutral production in the 2025/26 financial year. This means reaching climate neutrality in Scope 1 and 2. Sustainability has been at our core since our founding: each product we create must surpass its predecessor in economic and ecological performance, contributing to the sustainability of our customers' applications as well.
Since our pioneering integrated electronics before the millennium to today’s networked solutions, we deliver digital value to your applications. Through demand-driven operations, remote monitoring, predictive maintenance, and AI-driven buildings, we collaborate to find solutions that lower costs, save energy, and reduce emissions.
Founded on the belief in pioneering engines and groundbreaking EC technology, innovation has always driven our success. With substantial global investments in R&D, we continuously advance technology, enhancing our customers' applications and embodying technology leadership.
Our global presence ensures we offer rapid, customer-centric solutions while understanding local nuances and languages. By adapting our supply chains locally, we enhance responsiveness and reduce our CO2 footprint. This "local for local" approach allows us to meet customer needs swiftly and efficiently, contributing to a more sustainable future.
Download our cooling tower fan info packet
This information packet serves as a collection of cooling tower fan content, specially curated for built environment professionals such as building owners, facility management and installation/maintenance staff. The packet includes...
1. [Brochure] Intelligent EC fans for greater efficiency in cooling towers: This brochure offers an overview of the EC fans we have that are ideal for cooling towers.
2. [Flyer] Cooling tower fan project with estimated cost savings & CO2 reductions in Singapore: This flyer details an overview of our successful cooling tower fan retrofit in a data center in Singapore. It includes the estimated annual cost savings due to reduced energy consumption and the estimated amount of carbon dioxide emissions that was reduced as a result of the cooling tower fan retrofit.
3. [Video] Cooling tower retrofit timelapse: A timelapse video that depicts the process of retrofitting a cooling tower in one of our latest retrofit projects.