What is the total energy consumption of a liquid cooling data center?

The total energy consumption includes the energy consumptions of the cabinets, uninterruptible power supply (UPS), cooling system, lighting system, power transfer, and distribution system. The PUE of the liquid cooling data centers can usually be reduced to below 1.3 [6, 7].

What is the PUE of a liquid cooling data center?

The PUE of the liquid cooling data centers can usually be reduced to below 1.3 [6, 7]. For places with low ambient temperatures, their PUE is supposed to be lower than this value for a higher cooling system efficiency and larger natural cooling time.

How much energy is saved by a cooling system?

Coupled waste heat recovery and energy storage subsystems were included. Refrigeration modes were clarified to save cooling energy. Power usage effectiveness is reduced from 1.317 to 0.981. Maximum energy saving reaches 90.8 GWh/year with 1000 cabinets. Maximum net present value reaches 998 million CNY.

What is the energy-saving ratio of waste heat-driven cooling system?

Due to the coupled energy-saving effect of the proposed system with waste heat-driven cooling, waste heat-driven power generation and UPS replacement with energy storage batteries, the energy-saving ratio of the proposed system reaches 26.2 %, which is higher than the other energy-saving methods. Table 2.

Why do liquid cooling data centers need energy-saving retrofitting?

However, for places with high ambient temperatures like Shenzhen, its liquid cooling PUE may still be higher than 1.3, and this is why the local liquid cooling data centers need energy-saving retrofitting to meet local policies for PUE in Shenzhen.

What are the R-squared values for energy storage batteries?

For the energy storage batteries, the R-squared values of the fitted battery life with the reference data are 0.9991 and 1 for the lithium iron phosphate batteries and lithium titanate batteries, respectively, indicating high-accuracy fitting results. Table A1.