32results about How to "Guaranteed heat transfer resistance" patented technology

The invention provides a heat exchanger which comprises two collecting boxes and heat exchange tubes, wherein the heat exchange tubes are arranged between the two collecting boxes; the heat exchange tubes are flat heat exchange tubes; fins are arranged in the flat tubes; the fins comprise inclined parts; a fluid channel is partitioned by the inclined parts into a plurality of small channels; the larger the distance between the flat tubes and an inlet tube is, the larger the lengths h of the bottom sides of the isosceles triangular communication holes in the flat heat exchange tubes are. According to the heat exchanger, as the lengths h of the bottom sides of the isosceles triangular communication holes are changed along with the distance between the flat heat exchange tubes and the inlet tube, fluid can be enabled to flow to the heat exchange tubes with small flow resistance and far away from the inlet tube, the fluid can be uniformly distributed inside the heat exchange tubes, the heat exchange efficiency can be improved, and the service life can be prolonged.

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.

The invention provides a heat exchanger. The heat exchanger comprises two headers and heat exchange pipes arranged between two headers. The heat exchange pipes are flat heat exchange pipes. Fins are arranged in the flat pipes. The fins include inclined parts. A fluid channel is divided into a plurality of small channels through the inclined parts. The numbers of the communicating holes distributed in the different flat heat exchange pipes are different, and the longer the distances of the flat heat exchange pipes away from an inlet pipe are, the larger the numbers of the communicating holes distributed in the flat heat exchange pipes are. By means of the heat exchanger with the variable numbers of the communicating holes, due to the fact that the numbers of the communicating holes are set to be changed along with the distances of the heat exchange pipes away from the inlet pipe, fluid flows into the heat exchange pipes which are low in flowing resistance and is away from the inlet pipe, the fluid is evenly distributed in the heat exchange pipes, the heat exchange efficiency is improved, and the service life is prolonged.

The invention provides a heat exchanger. The heat exchanger comprises two headers and heat exchanging tubes which are arranged between the two headers; each heat exchanging tube is a flat heat exchanging tube; fins are arranged in each flat tube; each fin comprises an inclined part; the inclined parts are used for isolating fluid passages to form a plurality of small passages; the same inclined part is provided with a plurality of rows of communication holes; the distance between every two adjacent rows of communication holes are represented by S2; the S2s in different flat heat exchanging tubes are different in value; the farther the distances away from an inlet tube are, the smaller the S2s are. According to the heat exchanger provided by the invention, the distances between every two adjacent rows of communication holes are set to vary along with the distances away from the inlet tube, so that a fluid can flow into the heat exchanging tube which is small in flow resistance and far away from the inlet tube; therefore, the fluid can be uniformly distributed in the heat exchanging tubes, the heat exchange efficiency is improved, and the service life is prolonged.

The invention provides an intelligent control method of a solar system. The solar system comprises a heat collection device, wherein the heat collection device comprises a heat collection tube and a water tank; the heat collection tube comprises a heat absorption end and a heat release end; the heat release end is arranged in the water tank; a temperature sensor and a water level gauge are arranged in the water tank; an inlet tube and an outlet tube of the water tank are respectively provided with an inlet tube valve and an outlet tube valve; the temperature sensor, water level gauge, inlet tube valve and outlet tube valve are connected with a central control unit through data; and if the temperature of water in the water tank measured by the temperature sensor is lower than the lower limit, the central control unit automatically controls the opening and closing of the inlet tube valve and outlet tube valve according to the water level measured by the monitoring water level gauge. The water level and temperature in the water tank are automatically controlled, thereby preventing the water level from being too high or too low on the premise of satisfying the requirements for water temperature, thereby enhancing the use intelligentization of the heat collection device.

The invention provides a solar thermal collector system which comprises a heat collector, wherein the heat collector comprises a heat collecting pipe and a water tank, the heat collecting pipe comprises a heat absorbing end and a heat releasing end, and the heat release end is arranged in the water tank; an outlet pipe temperature sensor is arranged on the output pipeline of the water tank, an inlet pipe valve and an outlet pipe valve are respectively arranged on the inlet pipe and the outlet pipe of the water tank, and the temperature sensor, the inlet pipe valve and the outlet pipe valve are in data connection with a central controller; and the central controller is used for controlling the opening of the inlet pipe valve and the outlet pipe valve according to temperature measured by the temperature sensor. According to the invention, by detecting the temperature of water of the water outlet pipe of the water tank and controlling the opening of the valves, water output in the water tank can reach a constant temperature.