Solar heat accumulation and utilization system capable of intelligently controlling flow according to inlet temperature

The invention provides a solar heat accumulation system. The system comprises a heat collector, a heat accumulator and a heat utilization device; a heat exchange tube is introduced into the heat accumulator, performs heat exchange with a heat accumulation material and is connected with the heat utilization device via a pipeline; a valve is arranged on the pipeline between the heat utilization device and the heat accumulator, and also in data connection with a central controller; a temperature sensor is arranged on an inlet tube of the heat utilization device and used for automatically detecting a temperature of water entering the heat utilization device; the temperature sensor is in data connection with the central controller; the central controller controls opening of the valve according to the detected water temperature. The solar heat accumulation system monitors the temperature of water entering the heat utilization device and thus guarantees constant water temperature of the heat utilization device by controlling the flow; in such a manner, intelligent utilization of the heat accumulation system is realized.