Energy-saving control device and method for data center air conditioning terminal

Abstract

The invention provides an energy-saving control device and method for a data center air conditioning terminal. The device and method are applied to a data center air conditioning terminal structure composed of a cold water coil pipe, a draught fan, a regulating valve, a speed regulation execution device, a chilled water inflow pipeline, a chilled water outflow pipeline, an air supply channel and an air return channel. The energy-saving control device comprises a supplied air temperature sensor, a supplied air static pressure sensor, a returned air temperature sensor, an optimization control module, a supplied air temperature control module, a static pressure module and the like. By the adoption of the device and method, the returned air temperature control accuracy can be improved, local hot spots are avoided, the supplied air is controlled in an environment-friendly safe section, the energy consumption of the draught fan of the data center air conditioning terminal can be saved as well, and the energy effect of a whole water cooling air conditioner system is improved.

Description

technical field [0001] The invention relates to energy-saving control of an air-conditioning system in a data center, in particular to an energy-saving control device and a control method at the end of an air-conditioning in a data center, which is generally called a "computer room air-conditioner". Background technique [0002] The air-conditioning end of the data center provides a thermal environment for the IT equipment in the computer room. In a typical data center energy consumption structure, the air conditioning system consumes about 40%, of which the data center air conditioning end accounts for about 10%. In a water-cooled air-conditioning system, the operating conditions of the air-conditioning end of the data center are not only related to the energy efficiency of the body, but also affect the energy consumption of the refrigeration station at the cold source end. [0003] The end of the air conditioner in the data center uses chilled water as the cooling medium ...

AI Technical Summary

Problems solved by technology

[0007] The main shortcomings of the above two existing control methods are: ① only one temperature can be controlled, either only the return air temperature is controlled, or only the supply air temperature is controlled, and the influence of another temperature change on the controlled environment cannot be controlled. Local hotspots appear; ②The static pressure control loop adjusts the air volume and the temperature control loop adjusts the water volume. The two control loops are independent of each other. Temperature setting value or air supply temperature setting value), the static pressure setting value of the static pressure control loop is constant inside the program, and cannot be dynamically adjusted following the load change, resulting in excess cooling capacity and a drop in temperature difference during partial load operation, seriously reduce system energy efficiency

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