Standby cold source system for underground combat readiness engineering

Through the heat exchange between dry ice sublimation and refrigerant, combined with multi-level heat exchange cycles, a backup cold source system for underground combat readiness projects is provided, which solves the normal operation of the central air-conditioning system in emergencies and achieves the improvement of temperature control and refrigeration efficiency.

CN111928399BActive Publication Date: 2025-08-01鄢红才
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Patent Information

Application Number
CN202010968929.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-09-15
Publication Date
2025-08-01
Estimated Expiration
2040-09-15

AI Technical Summary

Technical Problem

In an emergency, the central air-conditioning system of the underground combat readiness project cannot operate normally due to damage to air-cooling or water-cooling main unit or cooling tower, and lacks an effective backup cold source system.

Method used

Dry ice is used as the original cold source, and heat exchange is carried out through dry ice sublimation and refrigerant. The cooling refrigerant is heat exchanged with the central air-conditioning refrigerant. The low-temperature CO2 after dry ice sublimation is used for heat exchange with the refrigerant in the cold storage tank to form a multi-layer heat exchange cycle to ensure the normal operation of the central air-conditioning system.

Benefits of technology

The normal operation of the central air-conditioning system in an emergency situation is achieved, the temperature of frozen water and cooling water is reduced, thermal radiation is avoided by satellite monitoring, and refrigeration efficiency and stability are improved.

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Abstract

The present invention discloses a standby cold source system for underground war preparedness projects, which includes a first heat exchange module for heat exchange with the chilled water of a central air conditioner. The first heat exchange module includes a chilled water heat exchange module for heat exchange with the chilled water of the central air conditioner and a cold source output module for heat exchange with the chilled water heat exchange module. The cold source output module includes a cold source tank, and a cold source heat exchange module for heat exchange with the CO2 formed by the gasification of dry ice is provided in the cold source tank. The cold source heat exchange module includes a cold source pipe provided on the cold source tank and a first coolant provided in the cold source pipe. Using dry ice as the original cold source, heat exchange occurs between the sublimation of dry ice and the first coolant. The cooled first coolant flows to the chilled water heat exchange module for heat exchange with the chilled water of the central air conditioner, ultimately reducing the temperature of the chilled water of the central air conditioner and maintaining the normal use of the central air conditioner; moreover, the dry ice has a large heat absorption capacity, is easy to store and easy to prepare.
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