As an important energy efficiency assessment indicator, PUE measures whether data centers are green and energy-efficient. The launch of "East Calculation and West Calculation" has accelerated the upgrade of PUE, explicitly requiring the PUE of data center clusters in the eastern region to be less than 1.25 and in the western region to be less than 1.2.

 

 

Promise based delivery, what you set is what you get

Vertiv technology successfully resolves the pain point of "design PUE ≠ delivery PUE"

 

As an important energy efficiency assessment indicator, PUE measures whether data centers are green and energy-efficient. The launch of "East Calculation and West Calculation" has accelerated the upgrade of PUE, explicitly requiring the PUE of data center clusters in the eastern region to be less than 1.25 and in the western region to be less than 1.2. However, for data center users, they have always faced the pain point of "designing PUE ≠ delivering PUE" in the process of using various energy-saving strategies to reduce PUE. How to turn the designed PUE into a practical operational PUE, so as to smoothly pass the data center energy evaluation and energy-saving supervision, and prepare for the 2025 energy efficiency exam, has become a common issue faced by the industry.

 

 

On site research found that "design PUE ≠ delivery PUE"

 

In the construction and operation of data centers, the design of PUE is not reliable enough, and the actual operation of PUE is the true reflection of its energy efficiency ratio. According to Vertiv technology, In recent years, field research on NYSE: VRT has found that there is a general difference of 0.2 between the design PUE and the operation PUE of newly built large data centers, which is particularly prominent in large water system data centers.

 

Explore the main reasons for differences

 

Firstly, there is the difference in load, and low load energy efficiency is not equal to full load energy efficiency. Data centers are often designed according to full load conditions during the planning phase, and the load rate gradually increases after delivery and operation. Energy efficiency will be greatly affected at low load rates.

 

Secondly, there are differences in equipment, as single point high energy efficiency does not necessarily equate to high energy efficiency throughout the year. The annual PUE of data centers is a comprehensive result of continuous changes in temperature, humidity, and load environment. However, some energy-saving solutions often emphasize extreme energy efficiency values, control switching, and utilization of natural cooling capacity, which deviate significantly from the design. The energy efficiency of some equipment also rapidly declines with running time, and the deviation will become larger and larger.

 

Another issue is delivery differences, as the experimental environment is not equal to the on-site environment. In engineering construction, due to a lack of deep understanding of the operating conditions of equipment, various problems may be faced, such as the misalignment of engineering construction affecting the air duct and airflow organization, which will affect the energy efficiency of equipment operation. In response to the inconsistency between the design and operation of PUE, it is necessary to deeply understand the reasons for the differences and take effective measures to solve the problem at the source. In addition, as energy efficiency and environmental protection policies continue to become stricter, energy efficiency assessments in data centers have also begun to take into account PUE CUE (Carbon Utilization Efficiency) and higher policy requirements have been put forward for WUE (Water Resource Utilization Efficiency). Therefore, it is necessary to achieve the delivery of real PUE with little or no water usage.

 

The "trusted ultra-low PUE" architecture showcases the true value of PUE

 

Vertiv has been actively exploring technological means to reduce PUE and achieve consistency between designing and delivering PUE. Vertiv believes that the full process solution to trustworthy ultra-low PUE lies in a measurable distribution structure, verifiable product energy efficiency, and trustworthy engineering delivery. From the application of advanced technology, high-energy efficiency products to digital construction by professional teams, the factors that create design PUE ≠ delivery PUE are comprehensively eliminated. Innovative technology is the most important driving force for achieving energy efficiency goals in data centers. Taking the energy-saving requirement of PUE less than 1.25 as an example, Vertiv technology has formed a mature technological path by decomposing the cooling factor CLF, power supply factor PLF, and building energy efficiency factor.

 

The control of CLF refrigeration energy efficiency level is the key to achieving PUE goals. Vertiv technology controls the CLF within 0.17 by maximizing the use of natural cooling sources, increasing inlet and outlet air temperatures, reducing mechanical refrigeration power consumption, and optimizing airflow organization. At the same time, Vertiv technology is based on optimizing power supply architecture and layout, improving UPS conversion efficiency, and shortening power supply links, achieving a PLF of less than 0.06. In addition, by using energy-saving insulation and energy-saving lighting equipment in buildings, the energy efficiency factor of the building can be controlled within 0.01.

 

Understand the corresponding innovative technology solutions launched by Vertiv in various professional links

 

In terms of refrigeration, the "hybrid dual engine" heat pipe technology adopts the fluorine pump priority mode, and the outdoor temperature conditions for the fluorine pump function to be activated have been increased from 5 degrees to 22 degrees. The utilization time of natural cold sources throughout the year has increased by more than 2500 hours, and the energy efficiency of anhydrous refrigeration has been improved by 20%. With the support of hybrid dual engine technology, Vertiv has also launched a series of distributed refrigeration solutions that can flexibly adapt to various scenario requirements.

 

In terms of power supply, Vertiv's unique UPS dynamic online mode can achieve 99% operational efficiency and improve system energy efficiency by over 2%. In addition, The VertivTMLiebert ® APT2.0 prefabricated power module is an important guarantee for PLF less than 0.06. This solution achieves full integration of the power supply chain, improves efficiency by 2.5%, and can save more than 30% of space.

 

Not only that, in addition to innovative technology solutions, Vertiv Technology has built a strong platform guarantee for the implementation of trustworthy ultra-low PUE in the dimensions of professionalism, standards, products, talents, and delivery. At present, the reliable ultra-low PUE delivery of Vertiv technology has been widely successful in practice, and has achieved full coverage in industries, regions, and scales.