CN218154878U

CN218154878U - Solar heat storage and heat and cold supply system

Info

Publication number: CN218154878U
Application number: CN202222595359.0U
Authority: CN
Inventors: 王秀美; 江红阳
Original assignee: Huachun New Energy Co ltd
Current assignee: Huachun New Energy Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2022-12-27
Anticipated expiration: 2032-09-29

Abstract

The utility model provides a solar energy heat accumulation and heat supply cooling system, including the thermal-arrest subassembly, heat exchange assembly, heat supply cooling subassembly, heat exchange assembly includes one-level heat transfer unit and second grade heat transfer unit, one-level heat transfer unit includes heat conduction oil tank and heat conduction oil return circuit, the heat conduction oil tank passes through the heat conduction oil return circuit and is connected with solar collector, second grade heat transfer unit includes high temperature molten salt jar, low temperature molten salt jar, fused salt return circuit and heat exchanger, the heat exchanger passes through the fused salt return circuit and is connected with the heat conduction oil tank, high temperature molten salt jar and low temperature molten salt jar all set up on the fused salt return circuit to respectively with the fused salt import and the fused salt exit linkage of heat exchanger. The utility model discloses a one-level heat transfer unit stores solar energy in the fused salt, and the heat that rethread second grade heat transfer unit made the fused salt can obtain make full use of to can improve energy storage efficiency, the at utmost reduces the heat and runs off.

Description

Solar heat storage and heat and cold supply system

Technical Field

The utility model relates to a heat supply cooling technical field, concretely relates to solar energy heat accumulation and heat supply cooling system.

Background

The common heat storage modes include pool heat storage, soil heat storage, aquifer heat storage and gravel-water heat storage, while the solar heat storage is usually carried out in the way of pool heat storage, and the pool heat storage has the characteristics of large heat capacity per unit volume, good fluidity, quickness and convenience in heat storage and taking and the like. However, the heat storage efficiency of the water tank is low, the influence of the external temperature difference is large, and the heat is easy to lose. Based on this, this application has provided the effectual solar energy heat transfer of heat accumulation and heat supply cooling system.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solar energy heat accumulation and heat supply cooling system, through solar collector gathering solar radiation energy, set up one-level heat transfer unit and second grade heat transfer unit between solar collector and the heat supply cooling subassembly, store solar energy in the fused salt through one-level heat transfer unit, the heat that rethread second grade heat transfer unit made the fused salt can obtain make full use of to can improve energy storage efficiency, the at utmost reduces the heat and runs off.

The technical scheme of the utility model as follows:

a solar heat storage and heat and cold supply system comprises a heat collection component, a heat exchange component and a heat and cold supply component, wherein the heat collection component comprises a solar heat collector; the heat exchange assembly comprises a primary heat exchange unit and a secondary heat exchange unit, the primary heat exchange unit comprises a heat conduction oil tank and a heat conduction oil loop, the heat conduction oil tank is connected with the solar heat collector through the heat conduction oil loop, the secondary heat exchange unit comprises a high-temperature molten salt tank, a low-temperature molten salt tank, a molten salt loop and a heat exchanger, the heat exchanger is connected with the heat conduction oil tank through the molten salt loop, and the high-temperature molten salt tank and the low-temperature molten salt tank are both arranged on the molten salt loop and are respectively connected with a molten salt inlet and a molten salt outlet of the heat exchanger; the heat supply and cold supply assembly comprises a water return pipe, a heat storage tank and a refrigerating unit, the heat storage tank and the refrigerating unit are respectively connected with a water outlet of the heat exchanger, and the water return pipe is connected with a water inlet of the heat exchanger.

Preferably, the refrigerating unit comprises a refrigerator, a cooling tower and a coil fan, and the cooling tower and the coil fan are respectively connected with the refrigerator. And one part of water at the outlet of the refrigerator enters the cooling tower to be utilized, and the other part of the water is radiated by air conditioning equipment such as a coil fan and the like.

Furthermore, the refrigerator is a lithium bromide refrigerator which is powered by heat energy, and the energy utilization rate is high.

Preferably, the solar thermal collectors are provided with a plurality of groups, and each group of solar thermal collectors is respectively connected with the heat conduction oil loop, so that more heat can enter the heat conduction oil loop, and the temperature of the heat conduction oil can be improved.

Preferably, the system further comprises a generator set, wherein the generator set is connected with the heat storage tank, so that the heat generated by the heating system is fully utilized.

Preferably, be provided with filtration equipment on the wet return to filter the impurity of wet return internal water, avoid the wet return to block up.

According to the utility model provides a solar energy heat accumulation and heat supply cooling system, through gathering solar radiation energy, with the mode deposit of solar energy with the heat-retaining to carry out multistage heat transfer through fused salt and heat transfer medium (water), the hot water and the steam of production can satisfy the demand of heat supply, steam supply simultaneously, and simultaneously, the steam or the hot water of production can drive refrigerating unit, satisfy the cooling demand. In addition, through solar collector gathering solar radiation energy, set up one-level heat transfer unit and second grade heat transfer unit between solar collector and the heat supply cooling subassembly, store solar energy in the fused salt through one-level heat transfer unit, the heat that rethread second grade heat transfer unit made the fused salt can obtain make full use of to can improve energy storage efficiency, the at utmost reduces the heat and runs off.

It should be understood that what is described in this summary section is not intended to limit key or critical features of embodiments of the invention, nor is it intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.

Drawings

The above and other features, advantages and aspects of various embodiments of the present invention will become more apparent with reference to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements, and wherein:

fig. 1 shows a schematic structural diagram of a solar heat storage and heat and cold supply system provided by an embodiment of the present invention.

Wherein, the corresponding relation between the reference numbers and the part names in fig. 1 is as follows:

the system comprises a solar heat collector 1, a heat conduction oil tank 2, a heat conduction oil loop 3, a high-temperature molten salt tank 4, a low-temperature molten salt tank 5, a molten salt loop 6, a heat exchanger 7, a water return pipe 8, a heat storage tank 9, a refrigerator 10, a cooling tower 11, a coil fan 12, a generator set 13 and a filtering device 14.

Detailed Description

Other objects and advantages of the present invention will become apparent from the following explanation of the embodiments of the present application.

Referring to fig. 1, the embodiment of the utility model provides a solar energy heat accumulation and heat and cold supply system, including thermal-arrest subassembly, heat exchange component, heat supply and cold supply subassembly, wherein, the thermal-arrest subassembly includes solar collector 1, optionally, solar collector 1 can be solar energy slot type solar panel, and in addition, solar collector 1 has the multiunit, and every group solar collector 1 is connected with conduction oil return circuit 3 respectively to can make more heats get into in conduction oil return circuit 3, be favorable to improving the temperature of conduction oil.

The heat exchange assembly comprises a first-stage heat exchange unit and a second-stage heat exchange unit, the first-stage heat exchange unit comprises a heat conduction oil tank 2 and a heat conduction oil loop 3, the heat conduction oil tank 2 is connected with the solar heat collector 1 through the heat conduction oil loop 3, the second-stage heat exchange unit comprises a high-temperature molten salt tank 4, a low-temperature molten salt tank 5, a molten salt loop 6 and a heat exchanger 7, the heat exchanger 7 is connected with the heat conduction oil tank 2 through the molten salt loop 6, the high-temperature molten salt tank 4 and the low-temperature molten salt tank 5 are both arranged on the molten salt loop 6, and are respectively connected with a molten salt inlet and a molten salt outlet of the heat exchanger 7. The molten salt is used as a heat exchange medium, and has the characteristics of low cost, long service life, good heat transfer and storage performance, high temperature, high heat flux and low operating pressure.

It can be understood that the primary heat exchange unit adopts heat conduction oil for heat exchange, but does not directly adopt molten salt for heat exchange, because the heat conduction oil has good fluidity and the heat transfer efficiency of the heat conduction oil is high.

The heat supply and cold supply assembly comprises a water return pipe 8, a heat storage tank 9 and a refrigerator 10 set, the heat storage tank 9 and the refrigerator 10 set are respectively connected with a water outlet of the heat exchanger 7, and the water return pipe 8 is connected with a water inlet of the heat exchanger 7. Further, an evaporator may be connected to the heat storage tank 9.

Further, the refrigerator 10 group includes a refrigerator 10, a cooling tower 11 and a coil fan 12, and the cooling tower 11 and the coil fan 12 are respectively connected to the refrigerator 10. A part of the water at the outlet of the refrigerator 10 enters the cooling tower 11 for further use, and the other part is radiated by air conditioning equipment such as a coil fan 12.

In addition, the refrigerator 10 can adopt a lithium bromide refrigerator 10, and the lithium bromide refrigerator 10 is powered by heat energy and has high energy utilization rate.

The utility model discloses a solar energy heat accumulation and heat supply cooling system carries out the thermal-arrest through solar energy slot type solar panel, heats the conduction oil, and conduction oil and fused salt carry out the heat exchange, store the heat in the fused salt, and through fused salt and water heat transfer, produce required steam or hot water again. The fused salt has high heat storage density and good stability, and can be used as a long-term heat storage medium for heat storage.

According to the utility model discloses solar energy heat accumulation and heat supply cooling system that provides is through gathering solar radiation energy, with the mode deposit of solar energy with the heat-retaining to carry out multistage heat transfer through fused salt and heat transfer medium (water), the hot water and the steam of production can satisfy the demand of heat supply, confession vapour simultaneously, and simultaneously, the steam or the hot water of production can drive refrigerator 10 groups, satisfy the cooling demand. In addition, through solar collector gathering solar radiation energy, set up one-level heat transfer unit and second grade heat transfer unit between solar collector and the heat supply cooling subassembly, store solar energy in the fused salt through one-level heat transfer unit, the heat that rethread second grade heat transfer unit made the fused salt can obtain make full use of to can improve energy storage efficiency, the at utmost reduces the heat and runs off.

In some optional embodiments, the solar heat storage and heat and cold supply system of the present invention further comprises a generator set 13, and the generator set 13 is connected to the heat storage tank 9, so as to make full use of the heat generated by the heat supply system.

In some embodiments, a filtering device 14 is disposed on the water return pipe 8 to filter impurities of water in the water return pipe 8, so that the water return pipe 8 can be effectively prevented from being blocked.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims. It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A solar heat storage and heat and cold supply system is characterized by comprising a heat collection component, a heat exchange component and a heat and cold supply component, wherein the heat collection component comprises a solar heat collector (1);

the heat exchange assembly comprises a primary heat exchange unit and a secondary heat exchange unit, the primary heat exchange unit comprises a heat conduction oil tank (2) and a heat conduction oil loop (3), the heat conduction oil tank (2) is connected with the solar heat collector (1) through the heat conduction oil loop (3), the secondary heat exchange unit comprises a high-temperature molten salt tank (4), a low-temperature molten salt tank (5), a molten salt loop (6) and a heat exchanger (7), the heat exchanger (7) is connected with the heat conduction oil tank (2) through the molten salt loop (6), and the high-temperature molten salt tank (4) and the low-temperature molten salt tank (5) are both arranged on the molten salt loop (6) and are respectively connected with a molten salt inlet and a molten salt outlet of the heat exchanger (7);

the heat supply and cold supply assembly comprises a water return pipe (8), a heat storage tank (9) and a refrigerator (10) set, the heat storage tank (9) and the refrigerator (10) set are respectively connected with a water outlet of the heat exchanger (7), and the water return pipe (8) is connected with a water inlet of the heat exchanger (7).

2. A solar thermal storage and supply system according to claim 1, wherein the set of refrigerators (10) comprises a refrigerator (10), a cooling tower (11) and a coil fan (12), the cooling tower (11) and the coil fan (12) being connected to the refrigerator (10) respectively.

3. A solar thermal storage and heating and cooling system according to claim 2, wherein the refrigerator (10) is a lithium bromide refrigerator (10).

4. Solar thermal storage and supply system according to claim 1, characterized in that said solar thermal collectors have a plurality of sets, each set of said solar thermal collectors being connected to said thermal oil circuit (3) respectively.

5. A solar thermal storage and supply system according to claim 1, further comprising a generator set (13), said generator set (13) being connected to said thermal storage tank (9).

6. Solar thermal storage and supply system according to claim 1, characterized in that the return pipe (8) is provided with a filtering device (14).