TW202132735A - Solar energy refrigeration system - Google Patents

Abstract

A solar refrigeration system including a solar energy transforming apparatus, a coupling and a refrigeration apparatus is provided. The solar energy transforming apparatus is adapted to transform solar thermal energy into kinetic energy. The coupling includes a driving portion and a driven portion. The driving portion is connected to the solar energy transforming apparatus and adapted to rotate through the kinetic energy provided by the solar energy transforming apparatus. A gap is formed between the driving portion and the driven portion. When the driving portion rotates, the driven portion is rotate through a magnetic field variation between the driving portion and the driven portion. The refrigeration apparatus is connected to the driven portion and adapted to perform refrigeration through the driving of the driven portion.

Description

Solar refrigeration system

The present invention relates to a refrigeration system, and particularly relates to a solar refrigeration system.

Solar energy (solar energy) technology refers to the conversion of light and heat radiated by the sun into usable energy, such as solar photovoltaic power generation, solar thermal power generation, etc. Because solar energy is rich in resources and does not require transportation, it has a good development prospect. However, the instability of sunlight and the problems caused by waste heat make it impossible to improve its versatility. In addition, many solar energy devices first convert solar thermal energy into electrical energy and then convert electrical energy into kinetic energy, which has poor energy conversion efficiency.

The present invention provides a solar refrigeration system, which can provide stable power to the compressor, and can prevent the waste heat of the solar energy conversion equipment from being transferred to the compressor.

The solar refrigeration system of the present invention includes a solar energy conversion device, a coupling and a refrigeration device. The solar energy conversion equipment is suitable for converting solar thermal energy into kinetic energy. The coupling includes a driving part and a driven part. The active part is connected to the solar energy conversion equipment and is suitable for rotating by the kinetic energy provided by the solar energy conversion equipment. There is a gap between the driving part and the driven part. When the driving part rotates, the driven part rotates by the change of the magnetic field between the driving part and the driven part. The refrigeration equipment is connected to the driven part and is suitable for cooling by the driving of the driven part.

In an embodiment of the present invention, the above-mentioned driving portion includes a first magnetic structure, the driven portion includes a second magnetic structure, one of the first magnetic structure and the second magnetic structure includes a permanent magnetic structure, and The other of the one magnetic structure and the second magnetic structure includes a magnetically permeable structure.

In an embodiment of the present invention, the size of the gap between the above-mentioned driving part and the driven part can be adjusted.

In an embodiment of the present invention, the aforementioned coupling is a permanent magnet coupling driver (PMCD).

In an embodiment of the present invention, the above-mentioned solar energy conversion equipment includes a steam circulation pipeline and a turbine. The turbine is connected to the coupling. The steam circulation pipeline is adapted to contain a circulating medium. And it changes from liquid to gas and flows in the steam circulation pipeline to drive the turbine to rotate to generate kinetic energy.

In an embodiment of the present invention, the aforementioned turbine is a Tesla turbine.

In an embodiment of the present invention, the aforementioned turbine is an impulse turbine.

In an embodiment of the present invention, the above-mentioned solar energy conversion equipment further includes a shaft speed increaser, and the shaft speed increaser is connected between the turbine and the coupling.

In an embodiment of the present invention, the above-mentioned solar energy conversion device further includes a reflective focusing structure, which is suitable for reflecting sunlight to the vapor circulation pipeline.

In an embodiment of the present invention, the above-mentioned refrigeration equipment includes a compressor, a condenser, an expansion valve, and an evaporator. The driven part is connected to the compressor, and the condenser is connected to one end of the compressor and the expansion valve. Between one end, the evaporator is connected between the other end of the compressor and the other end of the expansion valve.

Based on the above, in the solar refrigeration system of the present invention, the coupling used to connect the solar energy conversion equipment and the refrigeration equipment uses a non-contact magnetic field for power transmission, rather than a contact shaft for power transmission. Thereby, the waste heat of the solar energy conversion equipment will not be transmitted to the refrigeration equipment through the coupling, so that the refrigeration cycle of the refrigeration equipment can be prevented from being affected by the unexpected waste heat and cannot be performed normally. Moreover, when the amount of sunlight is constantly changing and the kinetic energy provided by the solar energy conversion device is unstable, by adjusting the size of the gap between the driving part and the driven part of the coupling accordingly, the unstable kinetic energy can be dealt with. Perform dynamic compensation to stabilize the power output to the refrigeration equipment.

Fig. 1 is a schematic diagram of a solar refrigeration system according to an embodiment of the present invention. Please refer to FIG. 1, the solar refrigeration system 100 of this embodiment includes a solar energy conversion device 110, a coupling 120 and a refrigeration device 130. The solar energy conversion device 110 is adapted to convert solar thermal energy into kinetic energy. The coupling 120 is connected between the solar energy conversion equipment 110 and the refrigeration equipment 130, and is suitable for transmitting the kinetic energy provided by the solar energy conversion equipment 110 to the refrigeration equipment 130, so that the refrigeration equipment 130 performs refrigeration accordingly.

Fig. 2 is a schematic diagram of the coupling of Fig. 1. Please refer to FIG. 2, the coupling 120 of this embodiment includes a driving portion 122 and a driven portion 124. The driving portion 122 and the driven portion 124 are not in contact with each other but have a gap G between them. The size of the gap G can be Adjustment. The active portion 122 includes a first magnetic structure 122a, and the driven portion 124 includes a second magnetic structure 124a. The first magnetic structure 122a is, for example, a permanent magnetic structure, and the second magnetic structure 124a is, for example, a magnetic conductive structure. The active part 122 is connected to the solar energy conversion device 110 shown in FIG. 1 and is adapted to be rotated by the kinetic energy provided by the solar energy conversion device 110. When the driving part 122 rotates, the driven part 124 is driven by the driving part 122 to rotate due to the change of the magnetic field between the driving part 122 and the driven part 124. The refrigerating device 130 is connected to the driven part 124 and is adapted to be driven by the driven part 124 for cooling.

The present invention does not limit the specific configuration of the coupling 120. As long as the power is transmitted through non-contact magnetic field changes, the coupling 120 of this embodiment can be selected. For example, the coupling 120 may be a permanent magnet coupling driver (PMCD), wherein when the first magnetic structure 122a of the driving part 122 and the second magnetic structure 124a of the driven part 124 move relative to each other According to Lenz's law, the first magnetic structure 122a cuts the lines of magnetic force to form induced eddy currents and induced magnetic poles, so that the first magnetic structure 122a and the second magnetic structure 124a influence each other and drive each other to rotate. In addition, the size of the gap G between the driving part 122 and the driven part 124 will affect the rotation speed ratio of the driving part 122 and the driven part 124, so that the output of the coupling 120 can be adjusted. The more detailed configuration and operating principle of the permanent magnet coupling driver are based on the prior art, which can be understood and implemented by those with ordinary knowledge in the technical field based on the above content and prior art of this embodiment, so it will not be repeated here. .

As mentioned above, in the solar refrigeration system 100 of this embodiment, the coupling 120 connected between the solar energy conversion equipment 110 and the refrigeration equipment 130 uses a non-contact magnetic field for power transmission instead of a contact type. The shaft transmits power. Thereby, the waste heat of the solar energy conversion device 110 will not be transmitted to the refrigerating device 130 through the coupling 120, so that the refrigeration cycle of the refrigerating device 130 can be prevented from being affected by unexpected waste heat and cannot be performed normally. In addition, when the amount of sunlight is constantly changing and the kinetic energy provided by the solar energy conversion device 110 is unstable, by adjusting the size of the gap G between the driving portion 122 and the driven portion 124 of the coupling 120 accordingly, the size of the gap G can be adjusted accordingly. The unstable kinetic energy is dynamically compensated to stabilize the power output to the refrigeration equipment 130.

It should be noted that although non-contact couplings (such as permanent magnet coupling drives) are in the prior art, there is currently no solar refrigeration system that uses non-contact couplings like the above-mentioned embodiments of the present invention. The solar refrigeration system 100 of the above-mentioned embodiment of the present invention overcomes the problems caused by the instability of sunlight and waste heat of the existing solar equipment by this configuration.

The solar energy conversion equipment 110 and the refrigeration equipment 130 of this embodiment will be described in detail below.

Fig. 3 shows a specific configuration of the solar refrigeration system of Fig. 1. Please refer to FIG. 3, the solar energy conversion device 110 of this embodiment includes a reflective focusing structure 112, a steam circulation pipe 114 and a turbine 116. The turbine 116 is connected to the coupling 120. The steam circulation line 114 is suitable for containing a circulating medium 50 (for example, water). The reflective focusing structure 112 is adapted to focus and reflect sunlight L to the steam circulation pipe 114, and the circulating medium 50 is adapted to transform from a liquid to a gaseous state by solar heat energy (water vapor S as shown in FIG. 3), and is used in the steam circulation pipe. The flow inside 114 drives the turbine 116 to rotate to generate kinetic energy. After passing through the turbine 116, the steam is cooled and transformed into a liquid state, which can be continuously circulated.

In the solar refrigeration system 100 of this embodiment, the solar thermal energy is converted into the kinetic energy of the turbine by the flow of steam in the solar energy conversion device 110 as described above, and then the kinetic energy is transferred to the refrigeration device 130 through the coupling 120 for cooling. . In this energy transfer process, it is not necessary to convert solar thermal energy into electric energy and then into kinetic energy, but directly convert solar thermal energy into kinetic energy, so it has good energy conversion efficiency.

The turbine 116 of this embodiment is, for example, a Tesla turbine, which can be compensated by the high efficiency characteristics of the Tesla turbine when the energy efficiency of sunlight is low. However, the present invention is not limited to this. Fig. 4 is a schematic diagram of some components of a solar energy conversion device according to another embodiment of the present invention. The turbine 116' shown in FIG. 4 is, for example, an impulse turbine, and the solar energy conversion equipment further includes a shaft speed increaser 118. The shaft speed increaser 118 is connected between the turbine 116' and the coupling (coupling 120 as shown in FIG. 3) so as to have sufficient speed by the speed increase of the speed increaser 118 when an impulse turbine is used. The output speed. The shaft speed increaser 118 of this embodiment may be a magnetic gear speed increaser or other types of speed increasers, which is not limited in the present invention.

Please refer to FIG. 4, the refrigeration equipment 130 of this embodiment includes a compressor 132, a condenser 134, an expansion valve 136 and an evaporator 138. The condenser 134 is connected between one end of the compressor 132 and one end of the expansion valve 136, and the evaporator 138 is connected between the other end of the compressor 132 and the other end of the expansion valve 136. The refrigeration equipment 130 uses a compressor 132, a condenser 134, an expansion valve 136, and an evaporator 138 to perform a cycle of compression, condensation, expansion, and evaporation to provide a refrigeration effect at the evaporator 138 end.

In summary, in the solar refrigeration system of the present invention, the coupling used to connect the solar energy conversion equipment and the refrigeration equipment uses a non-contact magnetic field for power transmission, rather than a contact shaft for power transmission. transfer. Thereby, the waste heat of the solar energy conversion equipment will not be transmitted to the refrigeration equipment through the coupling, so that the refrigeration cycle of the refrigeration equipment can be prevented from being affected by the unexpected waste heat and cannot be performed normally. Moreover, when the amount of sunlight is constantly changing and the kinetic energy provided by the solar energy conversion device is unstable, by adjusting the size of the gap between the driving part and the driven part of the coupling accordingly, the unstable kinetic energy can be dealt with. Perform dynamic compensation to stabilize the power output to the refrigeration equipment. In addition, in the embodiment of the present invention, the energy transfer process does not need to convert solar thermal energy into electric energy and then into kinetic energy, but directly converts solar thermal energy into kinetic energy, so it has good energy conversion efficiency.

50: Circulating medium 100: Solar refrigeration system 110: Solar energy conversion equipment 112: reflective focusing structure 114: Steam circulation pipeline 116, 116’: Turbo 118: Shaft speed increaser 120: Coupling 122: Active Department 122a: The first magnetic structure 124: Slave 124a: second magnetic structure 130: refrigeration equipment 132: Compressor 134: Condenser 136: Expansion valve 138: Evaporator G: gap L: Sunshine S: water vapor

Fig. 1 is a schematic diagram of a solar refrigeration system according to an embodiment of the present invention. Fig. 2 is a schematic diagram of the coupling of Fig. 1. Fig. 3 shows a specific configuration of the solar refrigeration system of Fig. 1. Fig. 4 is a schematic diagram of some components of a solar energy conversion device according to another embodiment of the present invention.

50: Circulating medium

100: Solar refrigeration system

110: Solar energy conversion equipment

112: reflective focusing structure

114: Steam circulation pipeline

116: Turbo

120: Coupling

122: Active Department

122a: The first magnetic structure

124: Slave

124a: second magnetic structure

130: refrigeration equipment

132: Compressor

134: Condenser

136: Expansion valve

138: Evaporator

L: Sunshine

S: water vapor

Claims (10)

A solar refrigeration system, including: A solar energy conversion equipment, suitable for converting solar thermal energy into kinetic energy; A coupling includes a driving part and a driven part, wherein the driving part is connected to the solar energy conversion equipment and is adapted to be rotated by the kinetic energy provided by the solar energy conversion equipment, between the driving part and the driven part Having a gap, when the driving part rotates, the driven part rotates by the change of the magnetic field between the driving part and the driven part; and A refrigerating device is connected to the driven part and is suitable for cooling by the driving of the driven part. The solar refrigeration system according to claim 1, wherein the active part includes a first magnetic structure, the driven part includes a second magnetic structure, and one of the first magnetic structure and the second magnetic structure includes a Permanent magnetic structure, the other of the first magnetic structure and the second magnetic structure includes a magnetic permeable structure. The solar refrigeration system according to claim 1, wherein the size of the gap between the driving part and the driven part is adjustable. The solar refrigeration system according to claim 1, wherein the coupling is a permanent magnet coupling driver. The solar refrigeration system according to claim 1, wherein the solar energy conversion equipment includes a steam circulation pipeline and a turbine, the turbine is connected to the coupling, and the steam circulation pipeline is suitable for accommodating a circulating medium, the circulating medium It is suitable for transforming from liquid to gaseous state by solar thermal energy and flowing in the steam circulation pipeline to drive the turbine to rotate to generate kinetic energy. The solar refrigeration system according to claim 5, wherein the turbine is a Tesla turbine. The solar refrigeration system according to claim 5, wherein the turbine is an impulse turbine. The solar refrigeration system according to claim 7, wherein the solar energy conversion device further includes a shaft speed increaser, and the shaft speed increaser is connected between the turbine and the coupling. The solar refrigeration system according to claim 5, wherein the solar energy conversion device further includes a reflective focusing structure, and the reflective focusing structure is adapted to reflect sunlight to the vapor circulation pipeline. The solar refrigeration system according to claim 1, wherein the refrigeration equipment includes a compressor, a condenser, an expansion valve, and an evaporator, the driven part is connected to the compressor, and the condenser is connected to the compressor Between one end of the compressor and one end of the expansion valve, and the evaporator is connected between the other end of the compressor and the other end of the expansion valve.

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