Water-cooled multi-connected air conditioning system with heat recovery

By introducing heat exchange loops on the refrigerant side, cooling side, and heat storage side into a water-cooled multi-split air conditioning system, waste heat recovery and utilization are achieved, solving problems that have not been solved in the prior art and improving the energy utilization rate of the system. Specifically, it is applied in the field of environmental pollution prevention and purification technology, particularly in the field of technology application involved in the patent, specifically in the field of rail transit air conditioning systems, involving water-cooled multi-split air conditioning systems with heat recovery.

CN224364995UActive Publication Date: 2026-06-16FOSHAN RAIL TRANSIT DESIGN & RES INST CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FOSHAN RAIL TRANSIT DESIGN & RES INST CO LTD
Filing Date
2025-08-06
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

In existing water-cooled multi-split air conditioning systems in subway stations, waste heat is not effectively utilized, resulting in energy waste. Furthermore, the system is inefficient under partial load conditions, especially in smaller systems where energy consumption is high, making it difficult to achieve individual room regulation and control.

Method used

Design a water-cooled multi-split air conditioning system with heat recovery. Through heat exchange loops on the refrigerant side, cooling side, and heat storage side, waste heat can be recycled. This includes the exchange of heat through refrigerant pipes, cooling water pipes, and hot water storage pipes. The hot water storage tank stores heat for use in subway stations.

Benefits of technology

It improves energy utilization, reduces compressor intake temperature and cooling water outlet temperature, enhances system operating efficiency and energy efficiency, and achieves high-efficiency and energy-saving operation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a water -cooled multi -connected machine air conditioning system with heat recovery, include: refrigerant side heat exchange loop, refrigerant side heat exchange loop includes refrigerant gas pipe main pipe and refrigerant gas pipe branch, and the both ends of refrigerant gas pipe main pipe are connected multi -connected machine indoor unit and multi -connected machine outdoor unit respectively, and the both ends of refrigerant gas pipe branch are all connected on refrigerant gas pipe main pipe, cooling side heat exchange loop, cooling side heat exchange loop includes cooling water inlet pipe, cooling water outlet pipe main pipe, cooling water outlet pipe branch, and the inlet of cooling water inlet pipe is connected multi -connected machine outdoor unit, and the outlet of cooling water inlet pipe is connected closed cooling tower group, heat storage side heat exchange loop, heat storage side heat exchange loop includes heat storage pipeline, heat releasing pipeline, and the intermediate portion pipeline of heat storage pipeline passes through heat storage heat exchanger, and the inlet of heat releasing pipeline is connected heat storage pool, the utility model discloses can realize to water -cooled multi -connected machine air conditioning system waste heat carries out recycling, improves energy utilization rate.
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