A kind of heat pump high temperature heat exchange unit
Technical field
The utility model relates to a kind of the heat exchanger of the efficient high temperature heat transfer of low-temperature heat quantity, relates to a kind of heat pump high temperature heat exchange unit specifically.
Background technology
Heat exchanger is between the different medium of temperature, to carry out the device that heat transmits, and mainly relies on the temperature difference between heat-carrying agent to realize transmittance process.Traditional heat exchanger can only be delivered to cryogenic media to heat from high-temperature medium.Heat transfer rate and heat-transfer capability receive the medium temperature difference influence.
For the heat of more effective extraction heat-carrying agent, need reduce the outlet temperature of heat-carrying agent as far as possible, how the heat of more efficient use heat-carrying agent utilizes industrial low-temperature used heat, and efficient high temperature heat exchange is a heat exchange difficult problem.
Heat pump techniques is meant through importing a spot of high-grade energy (like electric energy), realizes being shifted to high potential temperature heat energy by low-temperature heat energy.The thermal source medium lower from temperature extracts the higher hot user of heat supplying temperature.But pressure medium is high during because of high temperature heat transfer, power consumption is high, efficiency is lower, how to utilize the not only efficient but also high temperature heat transfer technology of heat pump to become the difficult problem of heat pump techniques.
The utility model content
The utility model problem to be solved provides a kind of, can effectively utilize heat, realizes that low temperature is to the heat transmission of high temperature, the heat pump high temperature heat exchange unit of raising heat exchange efficiency.
In order to address the above problem, the technical scheme that the utility model adopted is:
A kind of heat pump high temperature heat exchange unit; Comprise high-temperature heat-exchanging, it is characterized in that: be provided with high-temperature heat exchange tube in the high-temperature heat-exchanging, a wherein end of high-temperature heat exchange tube is provided with high-temperature-hot-water and goes out pipe; The other end is connected with the hot water secondary heat exchange and goes out pipe; Thermal source media inlet pipe is installed on the high-temperature heat-exchanging, and high-temperature heat-exchanging is connected with cryogenic heat exchanger through pipeline, is connected with the thermal source media on the cryogenic heat exchanger and goes out pipe;
The low-temperature heat exchange pipe is installed in the cryogenic heat exchanger, and a wherein end of low-temperature heat exchange pipe is provided with the hot water inlet pipe, and the other end is connected with hot water and changes hot outlet tube for the first time, and the hot water secondary heat exchange goes out pipe and hot water and changes for the first time and be communicated with heat pump intensification heat-exchanger rig between the hot outlet tube.
Below be the further improvement of the utility model to such scheme:
Heat pump intensification heat-exchanger rig comprises compressor, and the outlet of compressor is connected with condenser, and the import of compressor is connected with evaporimeter, is communicated with through expansion valve between condenser and the evaporimeter.
Further improve: the hot water secondary heat exchange goes out pipe and hot water and changes hot outlet tube for the first time and be communicated with condenser respectively.
Further improve: cryogenic heat exchanger be communicated with through evaporimeter between the thermal source media goes out to manage.
Heated medium at first heats through cryogenic heat exchanger for the first time, carries out post bake through heat pump intensification heat-exchanger rig again, after high-temperature heat-exchanging finally heat.
The thermal source media through the high-temperature heat-exchanging heat release, passes through the cryogenic heat exchanger heat release earlier again, passes through the heat release for the third time of heat pump intensification heat-exchanger rig at last, makes the final outlet temperature reach lower temperature.
Cold-producing medium evaporates draw heat in the heat pump intensification heat-exchanger rig in evaporimeter, becomes high temperature and high pressure gas through compressor compresses, and heat release is condensed into liquid in condenser, after the expansion valve throttling, gets into the evaporator evaporation heat absorption, gets into compressor compresses again.Realize the heat release of low temperature heat absorption high temperature through heat pump cycle.
The utility model can be realized the heat transmission of cryogen to high temperature fluid with respect to traditional heat exchanger, can effectively utilize heat, improves heat exchange efficiency.
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model embodiment.
Among the figure: the 1-high-temperature heat-exchanging; 2-heat pump intensification heat-exchanger rig; The 3-condenser; The 4-compressor; The 5-expansion valve; The 6-evaporimeter; The 7-cryogenic heat exchanger; 8-thermal source media goes out pipe; 9-thermal source media inlet pipe; The 10-high-temperature-hot-water goes out pipe; 11-hot water secondary heat exchange goes out pipe; 12-hot water changes hot outlet tube for the first time; 13-hot water inlet pipe.
The specific embodiment
Embodiment, as shown in Figure 1, a kind of heat pump high temperature heat exchange unit; Comprise high-temperature heat-exchanging 1, be provided with high-temperature heat exchange tube in the high-temperature heat-exchanging 1, a wherein end of high-temperature heat exchange tube is provided with high-temperature-hot-water and goes out pipe 10; The other end is connected with the hot water secondary heat exchange and goes out pipe 11, and thermal source media inlet pipe 9 is installed on the high-temperature heat-exchanging 1, and high-temperature heat-exchanging 1 is connected with cryogenic heat exchanger 7 through pipeline; Be connected with the thermal source media on the cryogenic heat exchanger 7 and go out pipe 8
The low-temperature heat exchange pipe is installed in the cryogenic heat exchanger 7; A wherein end of low-temperature heat exchange pipe is provided with hot water inlet pipe 13; The other end is connected with hot water and changes hot outlet tube 12 for the first time, and the hot water secondary heat exchange goes out pipe 11 and hot water and changes for the first time and be communicated with heat pump intensification heat-exchanger rig 2 between the hot outlet tube 12.
Heat pump intensification heat-exchanger rig 2 comprises compressor 4, and the outlet of compressor 4 is connected with condenser 3, and the import of compressor 4 is connected with evaporimeter 6, is communicated with through expansion valve 5 between condenser 3 and the evaporimeter 6.
The hot water secondary heat exchange goes out pipe 11 and changes hot outlet tube 12 for the first time with hot water and be communicated with condenser 3 respectively.
Cryogenic heat exchanger 7 and thermal source media go out between the pipe 8 and are communicated with through evaporimeter 6.
Heated medium at first heat through cryogenic heat exchanger 7 for the first time, pass through heat pump intensification heat-exchanger rig 2 again and carry out post bake, after high-temperature heat-exchanging 1 finally heat.
The thermal source media through high-temperature heat-exchanging 1 heat release, passes through cryogenic heat exchanger 7 heat releases earlier again, passes through 2 heat releases for the third time of heat pump intensification heat-exchanger rig at last, makes the final outlet temperature reach lower temperature.
Cold-producing medium evaporates draw heat in the heat pump intensification heat-exchanger rig 2 in evaporimeter 6, becomes high temperature and high pressure gas through compressor compresses, and heat release is condensed into liquid in condenser 3, after the expansion valve throttling, gets into evaporator evaporation 6 heat absorptions, gets into compressor compresses again.Realize the heat release of low temperature heat absorption high temperature through heat pump cycle.
The utility model can be realized the heat transmission of cryogen to high temperature fluid with respect to traditional heat exchanger, can effectively utilize heat, improves heat exchange efficiency.