TWM539038U - Cold energy recovery system - Google Patents

Description

Cold energy recovery system

The present invention relates to a recycling system, and more particularly to a cold energy recovery system.

Referring to Fig. 1, the patent of Taiwan Patent Publication No. M504948 discloses a cold energy recycling device for recovering cold energy in a liquid nitrogenation process and connecting a liquid nitrogen storage tank 1 and a cooling water tower 2. The cold energy recycling device 3 includes a tub 31 connected to the cooling water tower 2 and cooled by a working fluid 21 (shown by an arrow) from the cooling water tower 2, and is installed in the tub 31 and connected to the liquid. The coil 32 of the nitrogen storage tank 1.

Although the patent can be used to recover the cold energy in the liquid nitrogenation process to cool the working fluid 21, however, the patent needs to be repaired/maintained by the working fluid 21 in the tank 21 through the water discharge motor. The issue of cost and electricity bills.

Therefore, the object of the present invention is to provide a cold energy recovery system.

Thus, the novel cold energy recovery system includes a heating device for supplying a hot fluid, a storage device for supplying cold gas, and a connection between the heating device and the storage device for supplying the thermal fluid with The cold gas exchange heat exchange device. The heat exchange device includes a shell unit and a tube unit. The shell unit has a liquid inlet for the hot fluid to enter and a liquid outlet for the hot fluid to exchange heat with the cold gas, and defines a connection between the liquid inlet and the liquid outlet A flow space for the hot fluid to flow therein. The tube unit is disposed in the flow space of the shell unit, and has a plurality of tubes spaced apart from each other and extending along a length direction of the shell unit and passing through the shell unit for conveying the cold gas.

The effect of the novel is that when the cold gas passes through the tubes, the cold gas absorbs the thermal energy of the hot fluid flowing in the flow space of the shell unit, and at the same time, the cold energy of the cold gas is absorbed by the hot fluid, so that The temperature of the hot fluid is lowered, which in turn allows the cooled hot fluid to be reused. Based on this, the cold energy recovery system of the present invention does have the effect of recycling the cold energy of the cold gas.

Referring to Figures 2, 3 and 4, an embodiment of the novel cold energy recovery system includes a heating device 4 for providing a hot fluid 41, a storage device 5 for providing cold gas 51, and a connection system. The heat device 4 and the storage device 5 are used for a heat exchange device 6, a transfer pipe unit 7, and a discharge pipe 8 for heat exchange of the hot fluid 41 with the cold gas 51.

The heating device 4 is for example but not limited to a cooling water tower.

When the heating device 4 is a cooling water tower, the hot fluid 41 is cooling water for the cooling water tower.

The storage device 5 is, for example but not limited to, a storage tank for storing a liquid gas such as, but not limited to, liquid nitrogen, liquid oxygen or liquid carbon dioxide. When the storage device 5 is a storage tank for storing liquid gas, in order to maintain the saturated vapor pressure in the storage device 5, the cold gas 51 converted from the liquid gas in the storage device 5 is discharged to the atmosphere. During the discharge process, the temperature of the cold gas 51 changes, and cold energy is released.

The heat exchange device 6 includes a casing unit 61, a pipe unit 62, and a plurality of partition plates 63.

The shell unit 61 has a first shell wall 611 and a second shell wall 612 disposed oppositely, and a first shell wall 611 and the second shell wall 612 are connected between the first shell wall 611 and the first shell wall 611 and the first shell wall 611 The peripheral wall 613 of the second shell wall 612. The first shell wall 611, the second shell wall 612, and the peripheral wall 613 collectively define a flow space 610 for the hot fluid 41 to flow therein. The peripheral wall 613 has a liquid inlet 614 that communicates with the flow space 610, and the hot fluid 41 enters, and a liquid outlet 615 through which the hot fluid 41 that exchanges heat with the cold gas 51 flows.

The tube unit 62 is disposed within the flow space 610 of the shell unit 61. The tube unit 62 has a plurality of tubes 621 for conveying the cold gas 51. The tubes 621 are spaced apart and extend along a length direction (X) of the shell unit 61. The first shell wall 611 and the second shell wall 612 of the shell unit 61 are respectively inserted through the two ends of each of the tubes 621. In the case where the heat transfer effect of the heat exchange device 6 is maintained, in order to reduce the total volume of the heat exchange device 6 or reduce the amount of the pipe 621 to reduce the manufacturing cost of the heat exchange device 6, preferably, the pipes The 621 is triangular in space. The so-called triangular configuration is such that the tubes 632 are grouped by three adjacent tubes 621 and the tubes 621 in each group are located at three points of the triangle.

The partitions 63 are spaced apart in the longitudinal direction (X) and alternately arranged in the flow space 610 of the casing unit 61, and the flow space 610 is partitioned by a plurality of communicating flow space portions. The partitions 63 serve to direct the flow of the hot fluid 41 to increase the flow path, which in turn increases the heat exchange efficiency between the hot fluid 41 and the cold gas 51. In addition, the partitions 63 can also increase the overall support strength of the tubes 621 of the tube unit 62 to prevent the tubes 621 from vibrating.

The conveying pipe unit 7 includes a first conveying pipe 71 connected to the storage device 5 for outputting the cold gas 51, and a first casing connecting the first conveying pipe 71 and the casing unit 61 of the heat exchange device 6. The wall 611 is also used to transport the cold gas 51 passing through the first delivery pipe 71 to the second delivery pipe 72 of the tube unit 62 of the heat exchange device 6.

The discharge pipe 8 is connected to the second casing wall 612 of the casing unit 61 of the heat exchange device 6 and is used to output the cold gas 51 passing through the heat exchange device 6.

In summary, when the cold gas 51 passes through the tubes 621 of the tube unit 62, the cold gas 51 can absorb the heat energy of the hot fluid 41 flowing in the flow space 610 of the shell unit 61, and at the same time, the cold The cold energy of the gas 51 is absorbed by the hot fluid 41, causing the temperature of the hot fluid 41 to drop, which in turn causes the cooled hot fluid 41 to be reused. Based on this, the cold energy recovery system of the present invention does have cold cold gas. The effect of recycling can be recycled.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

4‧‧‧heating device
41‧‧‧Hot fluid
5‧‧‧Storage device
51‧‧‧ cold gas
6‧‧‧Heat exchange device
61‧‧‧Shell unit
610‧‧‧Mobile space
611‧‧‧ first shell wall
612‧‧‧Second shell wall
613‧‧‧Wall
614‧‧‧Inlet
615‧‧‧liquid outlet
62‧‧‧ tube unit
621‧‧‧ pipes
63‧‧‧Baffle
7‧‧‧Transport tube unit
71‧‧‧First duct
72‧‧‧Second duct
8‧‧‧Draining tube
X‧‧‧ length direction

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a schematic diagram of a cold energy recycling device of the patent of Taiwan Patent Publication No. M504948; 3 is a schematic perspective view of an embodiment of a new type of cold energy recovery system; FIG. 3 is a partial schematic view of the incomplete section of the embodiment; and FIG. 4 is a view showing the connection of a heat exchange device, a delivery pipe unit and a discharge pipe of the embodiment. A schematic diagram of the relationship.

41‧‧‧Hot fluid

51‧‧‧ cold gas

61‧‧‧Shell unit

610‧‧‧Mobile space

611‧‧‧ first shell wall

612‧‧‧Second shell wall

613‧‧‧Wall

614‧‧‧Inlet

615‧‧‧liquid outlet

62‧‧‧ tube unit

621‧‧‧ pipes

63‧‧‧Baffle

72‧‧‧Second duct

8‧‧‧Draining tube

X‧‧‧ length direction

Claims (9)

A cold energy recovery system comprising: a heating device for supplying a thermal fluid; a storage device for supplying cold gas; and a heat exchange device connecting the heating device and the storage device for the The hot fluid exchanges heat with the cold gas, comprising: a shell unit having a liquid inlet for the hot fluid to enter and a liquid outlet for discharging the hot fluid through heat exchange with the cold gas, and Defining a flow space connecting the liquid inlet and the liquid outlet and flowing the hot fluid therein, and a tube unit disposed in the flow space of the shell unit and having a plurality of roots spaced apart and along A length of the shell unit extends through the tube unit and is used to transport the cold gas. The cold energy recovery system of claim 1, wherein the heat exchange device further comprises a plurality of partitions spaced along the length direction and staggered in the flow space of the shell unit, and The flow space is separated by a plurality of communicating flow space portions. The cold energy recovery system according to claim 1, wherein the shell unit has a first shell wall and a second shell wall which are oppositely disposed and respectively provided for both ends of each tube of the tube unit, and a Located between the first shell wall and the second shell wall and connecting the first shell wall and the second shell wall and defining the liquid inlet and the peripheral wall of the liquid outlet. The cold energy recovery system according to claim 3, further comprising a duct connecting the storage unit and the heat exchanger unit and conveying the cold gas from the storage unit to the tube unit of the heat exchange unit unit. The cold energy recovery system of claim 4, wherein the delivery pipe unit comprises a first delivery pipe connected to the storage device for outputting the cold gas, and a first delivery pipe and the heat exchange device The first casing wall of the casing unit is for conveying cold gas passing through the first conveying pipe to the second conveying pipe of the pipe unit of the heat exchange device. The cold energy recovery system of claim 5, further comprising a discharge pipe for connecting the second casing wall of the casing unit of the heat exchange device and for outputting cold gas passing through the heat exchange device. The cold energy recovery system of claim 1, wherein the tubes of the tube unit are spatially triangular in configuration. The cold energy recovery system of claim 1, wherein the heating device is a cooling water tower. The cold energy recovery system of claim 1, wherein the storage device is a storage tank for storing liquid gas.