Novel refrigeration control device for data center

Abstract

The invention provides a novel refrigeration control device for a data center. The novel refrigeration control device comprises city power main line refrigeration equipment, a water supplying main pipe, a cold storage tank, a chilled water circulating pump, a temperature detection point and a machine room air conditioner of the terminal data center; the city power main line refrigeration equipmentis driven by the chilled water circulating pump through the water supplying main pipe to convey chilled water to the machine room air conditioner of the terminal data center; the cold storage tank isconnected to the water supplying main pipe in parallel, and the water supplying pipe comprises a water conveying pipe and a water returning pipe; a cold storage tank cold supplying system further comprises an electric valve and the temperature detection point; the temperature detection point comprises a first temperature sensor and a second temperature sensor which are arranged on the water conveying pipe and the water returning pipe correspondingly; and the electric valve selects whether to switch the city power main line refrigeration equipment to the cold storage tank or switch the cold storage tank to the city power main line refrigeration equipment according to information fed back by the first temperature sensor and the second temperature sensor, and the chilled water circulating pump is a variable-frequency pump. Meanwhile data collected by the temperature sensors can be accurately switched to the cold storage tank through a control system, the frequency of the variable-frequency pump is controlled, and electric energy is reasonably utilized and saved.

Description

technical field [0001] The invention relates to the technical field of refrigeration and cold storage, in particular to a control device for a data center cold storage tank. Background technique [0002] At present, in order to solve the problem of interruption of cooling caused by power supply failure or refrigeration system failure, the current data center refrigeration system often uses cold storage tanks to store chilled water for not less than 15 minutes to ensure the continuous cooling of the refrigeration system. For the problem of tank cooling conversion, for this problem, the BA system (building equipment automatic control system) generally adopts the judgment condition that the two-way mains power is switched to the cold storage tank for cooling, but in the actual operation and maintenance process, the two-way mains The impact of power failure on the refrigeration system is very complicated, not every power failure will cause the refrigeration system to be interrup...

AI Technical Summary

Problems solved by technology

[0002] At present, in order to solve the problem of interruption of cooling caused by power supply failure or refrigeration system failure, the current data center refrigeration system often uses cold storage tanks to store chilled water for not less than 15 minutes to ensure the continuous cooling of the refrigeration system. For the problem of tank cooling conversion, for this problem, the BA system (building equipment automatic control system) generally adopts the judgment condition that the two-way mains power is switched to the cold storage tank for cooling, but in the actual operation and maintenance process, the two-way mains The impact of power failure on the refrigeration system is very complicated, not every power failure will cause the refrigeration system to be interrupted; the first situation: normal power supply of dual mains, refrigeration system single point failure (chiller / water pump / cooling tower, etc. equipment failure), it is not necessary to switch to the cold storage tank for cooling at this time; the second case: the dual-circuit mains supply is normal, and the refrigeration system has multiple failures (equipment failures such as chillers / water pumps / cooling towers), and it is necessary to switch to the cold storage tank at this time The cold storage tank is used for cooling; the third case: one of the two-way mains is powered off, but it does not affect the normal operation of the main equipment of the refrigeration system. At this time, it is not necessary to switch to the cold storage tank for cooling; the third case: One of the power lines is powered off and affects the normal operation of the main equipment of the refrigeration system. At this time, it is necessary to switch to the cold storage tank for cooling; the fourth case: both mains power failures, and the refrigeration system is all interrupted. At this time, it is necessary to switch to the cold storage tank for cooling. The cold storage tank is used for cooling, and the core refrigeration equipment (chilled water circulation pump) is powered by UPS; from the analysis of the above five operating conditions, it can be seen that whether to switch to the cold storage tank for cooling is judged by whether the two-way mains power failure is not accurate. Yes, and in the refrigeration control process, energy saving factors need to be considered

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