Huatai United Securities Co., Ltd
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The impact of the power utilization efficiency requirements of the target company of Shanghai Precise Packaging Co.Ltd(300442) major asset restructuring on several policies on breaking bottleneck constraints and boosting the healthy development of digital economy
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Special verification report
Independent financial advisor
Date of signature: February, 2002
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Special verification report on the impact of the company that is the subject of Shanghai Precise Packaging Co.Ltd(300442) major asset restructuring on the power utilization efficiency requirements stipulated in the several policies on breaking bottleneck constraints and boosting the healthy development of digital economy
Shenzhen Stock Exchange:
On December 16, 2021, Hebei Provincial Development and Reform Commission, Hebei Provincial Department of industry and information technology, Hebei Provincial Bureau of market supervision and administration, Hebei Provincial Communications Administration and Hebei Provincial Department of housing and urban rural development issued the notice on several policies on breaking bottleneck constraints and promoting the healthy development of digital economy (jfggj [2021] No. 1690), Propose “(V) Support the green and low-carbon development of data centers. Encourage data center enterprises to increase the proportion of renewable energy utilization through green power trading and subscription of renewable energy green power certificate, and give priority to supporting the new construction and expansion of data centers with renewable energy power supply of 50% or more. Strengthen the energy-saving transformation of the data center, introduce excellent energy-saving products and schemes, accelerate the application of green energy-saving equipment such as full flash memory, liquid cooling technology and indirect evaporative cooling units, encourage the supporting construction of waste heat recovery heating facilities in the data center, and effectively promote the low-carbon operation of the data center. Support wind power and photovoltaic enterprises to carry out in-depth cooperation with data center enterprises, and explore and promote the new mode of data center participation in the integrated construction of “source, network, load and storage”. By 2025, all large and super large stock data centers with power utilization efficiency (PUE = total power consumption of data center / power consumption of IT equipment in data center) of more than 1.3 will be vacated and shut down in accordance with laws and regulations. “
In response to the above requirements, Huatai United Securities Co., Ltd. (hereinafter referred to as “Huatai United Securities” or “independent financial consultant”) has conducted special verification. The specific verification is as follows:
Unless otherwise specified, the words or abbreviations described in this special verification report have the same meaning as the words or abbreviations defined in the report on Shanghai Precise Packaging Co.Ltd(300442) major asset replacement, issuance of shares to purchase assets and raising supporting funds and connected transactions (Draft).
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1、 Pue of data center currently operated by the target company
Up to now, the data center operated by the target company in Hebei Province is Runze (Langfang) international information port. The specific data centers are A-1, A-2, A-3, a-5, a-6, A-7 and A-18. The A-8 data center has not been fully put into operation and there is no pue data. The following is the statistical pue in 2021 and the estimated pue in 2021 according to the actual operation of each data center:
Building No.: A-1 A-2 A-3 a-5 a-6 A-7 A-18
2021 average 1.42 1.35 1.41 1.35 1.42 1.60 1.39
Average pue
Assessment forecast 1.45 1.40 1.44 1.40 1.42 1.50 1.50
PUE
Note: 1. A7 has been delivered for a short time and is still in the climbing period, so pue data has no reference significance; The actual pue of each data center in 2021 will be subject to the monitoring results issued by the energy conservation supervision department of Hebei Provincial Development and Reform Commission.
2. The power consumption of the target company has been connected to the dynamic energy consumption monitoring platform of Hebei Province. The above average pue value in 2021 is calculated according to the actual monitoring data (the total power consumption of each data center is measured according to the total power meter of each data center, and the power consumption of it equipment is measured according to the power meter at the end of IT equipment).
Up to now, the pue of A9, A10, a11 and A12 data centers built by Runze technology in Hebei Province is 1.38. Therefore, the actual pue of the data center built and operated by the target company and the design pue of the data center under construction in Hebei Province are above 1.3.
2、 Transformation plan made by the target company
On the premise of ensuring the “safety, stability and reliability” of the client server, the target company has been continuously reducing the pue value of the target company’s data center through the adoption of new energy-saving technologies, energy-saving equipment, continuous optimization of design, improvement of operation and maintenance level and other measures. According to the on-site monitoring records of the target company’s power use efficiency in 2019 and 2020 organized by Hebei Development and Reform Commission, the power use efficiency of A1, A2 and A5 data centers of Runze technology in 2019 were 1.47, 1.44 and 1.43 respectively; In 2020, the correction value of the overall power use efficiency of A1, A2, A5 and A6 data centers that Runze technology has reached the production capacity reached 1.39 (the power use efficiency of this energy-saving supervision does not distinguish between specific data centers). The power use efficiency of Runze technology data centers in 2019 and 2020 has shown a continuous downward trend year by year. In response to the notice of Hebei Development and Reform Commission and other five departments on printing and Distributing Several Policies on breaking bottleneck constraints and boosting the healthy development of digital economy (jfggj [2021] No. 1690), Put forward the relevant requirements of “by 2025, all large and super large stock data centers with power utilization efficiency (PUE = total power consumption of data center / power consumption of IT equipment in data center) of more than 1.3 will be vacated and shut down in accordance with laws and regulations”, and the target company system is 6-14-16-1-3
The specific transformation scheme and feasibility are as follows:
(I) data center operated in Langfang area
1. Distribution system
(1) UPS (uninterruptible power supply, which is a system equipment that connects the battery with the host and converts the DC power into commercial power through the host inverter and other module circuits) is changed from the original dual conversion operation mode to dynamic energy-saving mode, and the power loss of UPS is relatively reduced by 66.6%
The original dual conversion operation mode of the target company (when the mains power supply is normal, the AC input is 100% converted into DC through the rectifier, one of which charges the battery and the other supplies power to the inverter; while the inverter is in working state from beginning to end, converting DC power into AC power to supply power to electrical equipment) has a certain energy loss in the conversion process; Since 2019, the industry has gradually adopted dynamic energy-saving mode (i.e. dynamic operation of AC direct supply and battery inverter direct supply) to reduce the loss of energy conversion.
According to the information on Eaton’s official website and the product introduction information provided by the supplier of the target company, under its energysaver system (ESS, a dynamic energy-saving working mode of Eaton UPS), the efficiency of Eaton UPS system can be maintained at more than 99% and the power loss of UPS is less than 1%. At the same time, according to the test report of dynamic online mode (VI mode) adopted by EXL series UPS of Weidi Technology Co., Ltd., the supplier of the target company (issued by China information and Communication Research Institute and China Taier laboratory), In VI mode, the efficiency value of the system at 50% load rate (according to the 2n1 distribution architecture of the data center, the load rate of UPS under normal operation is about 50%) is 99.01%. The UPS system efficiency of the two systems is basically maintained at the same level.
The original UPS system efficiency of the target company is about 94%, and the power loss is about 6%. It has been tested in A7 data center, and the average efficiency is 98%. Therefore, it is conservatively estimated that through this transformation, the power loss can be reduced from 6% of the original UPS total power to 2%, and the UPS power loss can be reduced by 66.6%.
(2) The current operation mode of the lighting system is 24-hour uninterrupted lighting. It is transformed to set up Cecep Solar Energy Co.Ltd(000591) photovoltaic power generation system for lighting power supply. At the same time, it is changed to intelligent lighting system to realize that the light is off when people walk and the light is on when people come. The overall lighting energy-saving rate can reach 50%.
Comprehensively considering the roof building data of each building in area a, the data centers A-7, A-8 and A-18 are single units of the same model, and the available photovoltaic panel area of the roof is about 1000 m2; The area of available photovoltaic panels on the roof of A-1, A-3 and a-6 data centers is about 1200 m2, and the area of available photovoltaic panels on the roof of a-5 data center is about 600 M2 (some podiums are sold, and the lighting load is reduced accordingly), while the lighting load of each data center is relatively close; Therefore, the target company takes 1 2n, where n is the equipment with the most basic capacity configured for it operation, and the configuration of two sets of systems is represented by 2n.
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Take A-18 as an example to calculate the energy saving of photovoltaic power generation and intelligent lighting.
The annual power consumption of lighting load in A-18 data center is 1464000kwh. If the lighting distribution system adopts intelligent control, add infrared sensing module to realize that the light is off when people walk and on when people come. According to the current operation mode, the working time of lighting lamps is 24 hours; Intelligent control is adopted. After the transformation of the lighting system, the cumulative working time of the lamps is about 9 hours, and the annual power consumption of the lighting load is 1464000kwh * 9 / 24 = 549000kwh. In addition, the A-18 data center’s current vacant area can be used to place the photovoltaic Cecep Solar Energy Co.Ltd(000591) panel in a conservative estimate of about 1000. According to the report of the official account of Longji Leye Photovoltaic Technology Co., Ltd., the “Langfang based energy”, the average electricity consumption of the 1000 year free roof can be 120098kWh. Then the energy-saving efficiency of the lighting system is: 1 – [549000-120098] / 1464000 = 70.70%. Therefore, the overall lighting energy-saving rate of the target company is conservatively expected to reach about 50%.
2. Refrigeration system
(1) Based on the operation of the existing chiller, each chiller is added with a set of small ball cleaning equipment to ensure the heat exchange efficiency of the condenser, and the annual energy saving rate of the chiller is 4%
The target company now adopts the water-cooled refrigeration mode to provide necessary refrigeration for the data center. After the refrigerator runs for a period of time, the metal heat exchange surface will scale to a certain extent, and the heat exchange efficiency of the condenser will decline. The target company will clean the refrigerator once a year before the transformation to ensure the normal operation of the refrigerator; Combined with the operation experience of data center chillers in the industry in recent two years, the target company plans to add a set of small ball cleaning equipment for each chiller to reduce the scale on the metal heat exchange surface, replace the original regular chiller cleaning, and improve the heat exchange efficiency in real time.
According to the test report issued by the third-party testing organization (Shanghai Tongji construction project quality testing station), according to the test results, the performance of the chiller can be improved by 4% by using the online cleaning system.
(2) Increase the outlet water temperature of the chiller, and the energy saving rate of the chiller is greater than 10%
According to the model selection report of 2200 ton centrifugal chillers commonly used in Langfang Park issued by carrier, York and Trane (all suppliers on the cooperation white list of the target company), when the outlet temperature / return temperature of chilled water are 12 ℃ / 19 ℃ and 17 ℃ / 24 ℃ respectively (other parameters remain unchanged), The outlet temperature of chilled water is increased from 12 ℃ to 17 ℃, saving at least 15%. According to the requirements of GB 50174-2017 code for design of data center, the water supply temperature of chilled water is 7 ℃ – 21 ℃, and the air supply temperature can be 18 ℃ – 27 ℃. The subject company plans to increase the water supply temperature of chilled water from 12 ℃ to 17 ℃ without affecting the overall safe and stable operation of the machine room (both before and after adjustment meet the specification requirements), It is conservatively estimated that the energy-saving rate of the subject company’s chiller after transformation will be greater than 10%.
(3) The secondary pump adopts frequency conversion control and hot standby operation, and the energy saving rate is about 5%
The secondary pumps of the refrigeration system of the target company are all configured with N + 12. At present, the operation mode is the cold standby operation mode in which the standby water pump is not put into operation. Under this operation mode, the operating secondary pump is basically in the design load state and the power consumption is high; The transformation scheme adopts the mode of hot standby operation, and the standby secondary pump also participates in the operation (i.e. n + 1 secondary pumps operate), which reduces the operation load of the secondary pump under the original operation mode, and adjusts the operation frequency of the water pump under the guarantee of safe operation, so that the secondary pump is in an energy-saving operation state, so as to effectively reduce the energy consumption of the secondary pump. According to the model selection report data of a secondary pump in wilo, Germany, a water pump supplier, the design working point flow of a single water pump is 1100 M ³/ h. The lift is 31m and the power is 108.71kw; When the three pumps operate in parallel, the total flow is 1100 M ³/ h *3=3300 m ³/ h； When all four water pumps are used for operation, the flow of a single water pump is 3300 / 4 = 825 M ³/ h. At this time, the frequency of the water pump needs to be reduced, and the operating point becomes the flow of 825 M ³/ h. The lift is 19m, and the power of a single unit is 75kW.
Therefore, the energy saving rate = (108.71 * 3-75 * 4) / 108.71 * 3 = 8%, and the conservative value is 5%.
Before the energy-saving technical transformation scheme is issued, the target company has
