2results about How to "Increase the temperature difference between supply and return water" patented technology

The invention relates to the technical field of central heating and industrial heat energy utilization, in particular to a mixed water heat exchanger control system and a control method thereof.The mixed water heat exchanger control system comprises a jet type mixed water heat exchanger, a first high-temperature water jet channel, a second low-temperature water jet channel and a mixing cavity are formed in the jet type mixed water heat exchanger; the primary net adjusting unit comprises an electric adjusting valve and a pressure sensor which are arranged at a primary high-temperature water inlet; the secondary network circulating unit comprises a circulating pump, a flow sensor and a return water temperature sensor; the temperature detection unit at least comprises a mixed outlet water temperature sensor; the controller is in signal connection with the electric adjusting valve, the circulating pump and the sensors; synchronous efficient utilization of primary network heat energy and pressure energy is achieved, the heat exchange efficiency can be close to 100%, secondary low-temperature water can be effectively driven by the pressure energy of primary high-temperature water to participate in mixing through the injection pressurization characteristic of the injection type water mixing heat exchanger, and the operation power of a secondary network circulating pump is reduced.

The application relates to a control system for intelligent pressure regulation of a district central cooling pipe network, and belongs to the technical field of central cooling, which comprises a cold station, a cold station control system, a plurality of plate exchanger rooms and a plurality of plate exchanger room control systems; the cold station control system comprises a first control module, and the plate exchanger room control system comprises a second control module connected with the first control module; the cold station comprises a variable frequency water pump connected with the first control module and a cold station water supply and return water pressure difference sensor, the variable frequency water pump is connected with the cooling pipe network; the plate exchanger room is connected with the cooling pipe network and a user end, a cooling side switch valve, a cooling side adjusting valve, a cooling side water supply temperature sensor and a cooling side return water temperature sensor connected with the second control module are arranged on a water supply pipe of the cooling pipe network side, a cooling side water supply temperature sensor connected with the second control module is arranged on a water supply pipe of the user end side, and the plate exchanger room is provided with a plate exchanger temperature sensor connected with the second control module, and the application has the effect of reducing the power consumption of the cooling variable frequency pump.