Coupling type waste heat utilization cold storage and supply system and control method thereof

The invention discloses a coupling type waste heat utilization cold storage and supply system and a control method thereof.The coupling type waste heat utilization cold storage and supply system comprises a cold supply system body, and the cold supply system body comprises a waste heat boiler and a flue gas-hot water heat exchanger connected with the waste heat boiler through a flue gas pipeline; the cold supply system body further comprises an air cooling screw water chilling unit and a cold storage water tank, the cold storage water tank is connected with a cold supply user side through a chilled water supply pipeline and a chilled water return pipeline, and the smoke-hot water heat exchanger is connected with a hot water type lithium bromide water chilling unit through a pipeline. The hot water type lithium bromide water chilling unit and the air cooling screw water chilling unit are connected to the chilled water supply pipeline and the chilled water return pipeline in parallel. The stability of the cold