Patent Application
20130014507
1. Field of the Invention
The present invention relates to a power device and, more particularly, to a floating type solar energy collection/power device.
2. Description of the Related Art
Conventional solar energy collection/power devices include a heat collecting assembly and an energy storage assembly. The heat collecting assembly absorbs the heat energy from the sun. The heat energy is converted into electricity or energy of another type. Then, the energy is outputted to the energy storage assembly so that the user can utilize the stored energy even though there is no sunlight.
In the conventional solar energy collection/power device, the heat energy can be outputted as shaft work through a heat machine. During the conversion, the energy converted per unit time by the heat machine is limited due to system matching. The absorbed solar radiant energy can not be effectively utilized such that the outputted shaft work is small and unstable, reducing the power supply effect of the solar energy collection/power devices.
Furthermore, the heat collecting assembly generally includes a solar panel placed on the ground or a flat roof to absorb the solar radiant energy. The solar panel should not be shielded by objects so as to effectively absorb the solar energy. However, this causes limitation to the use of the space surrounding the solar panel.
Thus, a need exists for an improved solar energy collection/power device allowing effective use of space and providing a stable power source.
An objective of the present invention is to provide a floating type solar energy collection/power device that can avoid uneven energy supply resulting from a change in the sunshine amount, so that the floating type solar energy collection/power device can generate more energy.
Another objective of the present invention is to provide a floating type solar energy collection/power device that can float in the air to reduce the limitation to effective use of space on the ground.
The present invention fulfills the above objectives by providing a floating type solar energy collection/power device including a base having a compartment receiving a first working fluid. A heat collecting assembly is mounted to an opening of the compartment to seal the compartment. A heat conducting assembly is mounted in the compartment and includes a heat conducting tube and a pump. The heat conducting tube includes a first end in communication with the compartment and a second end connected to the pump. The pump draws the first working fluid into the second end of the heat conducting tube via an inlet of the pump. A heat machine includes a compressor, a heat exchanger, and a gas turbine. The compressor, the heat exchanger, and the gas turbine are connected to each other by a plurality of pipes. The gas turbine is connected to a generator. The heat exchanger and the first working fluid undergo heat exchange.
Preferably, the heat collecting assembly includes a light transmitting layer, a heat collecting layer, and a heat collecting panel. The heat collecting layer includes a first surface connected to the light transmitting layer and a second surface connected to the heat collecting panel.
Preferably, the light transmitting layer includes a plurality of light concentrating portions.
Preferably, each of the plurality of light concentrating portions has a concave, arcuate face.
Preferably, the heat collecting layer includes a plurality of first heat collecting sections and a plurality of second heat collecting sections. Each of the plurality of second heat collecting sections is located between two adjacent first heat collecting sections. Each of the plurality of first heat collecting sections is aligned with one of the plurality of light concentrating portions.
Preferably, each of the plurality of first heat collecting sections tapers away from the plurality of light concentrating portions.
Preferably, each of the plurality of second heat collecting sections is filled with a greenhouse gas.
Preferably, the heat collecting panel includes a plurality of heat collecting channels. Each of the plurality of heat collecting channels is aligned with a neck of one of the plurality of first heat collecting sections.
Preferably, the heat conducting tube extends through the plurality of heat collecting channels.
Preferably, the first working fluid is helium.
Preferably, the base is made of a thermally insulating material.
Preferably, the heat machine further includes a preheater located between the compressor and the heat exchanger.
Preferably, the plurality of pipes of the heat machine receives a second working fluid.
The present invention will become clearer in light of the following detailed description of illustrative embodiments of this invention described in connection with the drawings.
The illustrative embodiments may best be described by reference to the accompanying drawings where:
All figures are drawn for ease of explanation of the basic teachings of the present invention only; the extensions of the figures with respect to number, position, relationship, and dimensions of the parts to form the preferred embodiments will be explained or will be within the skill of the art after the following teachings of the present invention have been read and understood. Further, the exact dimensions and dimensional proportions to conform to specific force, weight, strength, and similar requirements will likewise be within the skill of the art after the following teachings of the present invention have been read and understood.
With reference to
Specifically, the compartment 11 of the base 1 receives a first working fluid. Preferably, the first working fluid is a gas having a high heat capacity ratio and having a specific weight smaller than 1, such that the first working fluid has a higher heat receiving capacity and provides high floating force. In this embodiment, the first working fluid is helium. However, other gases can be used. The material and the shape of the base 1 are not limited. Preferably, the base 1 is made of a thermally insulating material to avoid loss of heat through the base 1.
The heat collecting assembly 2 is mounted in the opening of the compartment 11 and, thus, seals the opening. Namely, the compartment 11 is sealed to avoid leakage of the first working fluid. The heat collecting assembly 2 includes a light transmitting layer 21, a heat collecting layer 22, and a heat collecting panel 23.
The light transmitting layer 21 is made of a light transmittable material and includes a plurality of light concentrating portions 211 for concentrating the heat energy radiated from the sun. In this embodiment, each light concentrating portion 211 has a concave, arcuate face for focusing the sunlight, providing better light collecting effect.
The heat collecting layer 22 includes a first surface connected to the light transmitting layer 21. The heat collecting layer 22 includes a plurality of first heat collecting sections 221 and a plurality of second heat collecting sections 222. Each first heat collecting section 221 is aligned with one of the light concentrating portions 211. Preferably, each first heat collecting section 221 tapers away from the light concentrating portions 211 to achieve better heat concentrating effect. Each second heat collecting section 222 is located in an area not connected to the light concentrating portions 211. In this embodiment, each second heat collecting section 222 is located between two adjacent first heat collecting sections 221. Preferably, each second heat collecting section 222 is filled with a greenhouse gas to increase the heat absorbing effect.
The heat collecting panel 23 is connected to a second surface of the heat collecting layer 22 opposite to the first surface. The heat collecting panel 23 includes a plurality of heat collecting channels 231. Each heat collecting channel 231 is aligned with a neck of one of the first heat collecting sections 221. Preferably, the heat collecting panel 23 is made of a high thermal-conductivity material, so that the heat collecting panel 23 can accumulate an amount of heat energy the same as that accumulated by the first and second heat collecting sections 221 and 222.
The heat conducting assembly 3 includes a heat conducting tube 31 and a pump 32. The heat conducting tube 31 is preferably made of a high thermal-conductivity material. The heat conducting tube 31 extends through the heat collecting channels 231 to conduct the heat accumulated by the heat collecting channels 231. In this embodiment, the heat conducting tube 31 is a continuous tube wound through the heat collecting channels 231. The heat conducting tube 31 includes a first end in communication with the compartment 11 and a second end connected to the pump 32. Through an inlet 321 of the pump 32, the first working fluid can be driven by the pump 32 to circulate in the compartment 11, the heat conducting tube 31, and the pump 32, transferring the heat of the heat collecting pipe 31 into the compartment 11.
The heat machine 4 includes a compressor 41, a heat exchanger 42, a gas turbine 43, and a generator 44. In this embodiment, the heat machine 4 includes a preheater 45. Furthermore, the heat machine 4 includes a plurality of pipes to connect the compressor 41, the preheater 45, the heat exchanger 42, and the gas turbine 43, such that a circulating loop is formed between the compressor 41, the preheater 45, the heat exchanger 42, and the gas turbine 43. The circulating loop is filled with a second working fluid. The gas turbine 43 is connected to the generator 44. When the compressor 41 drives the second working fluid to flow, the second working fluid is heated by the preheater 44 while passing through the preheater 44. Then, the second working fluid flows through the heat exchanger 42 to undergo heat exchange with the first working fluid in the compartment 11. Thus, the second working fluid absorbs the heat in the compartment 11. The location of the heat exchanger 42 is not limited. In this embodiment, the heat exchanger 42 is located in the compartment 11. When the second working fluid flows through the preheater 44 and the heat exchanger 42, the temperature of the second working fluid is increased to a level sufficient to drive the gas turbine 43. Thus, the gas turbine 43 is driven to output shaft work to the generator 44 that outputs electricity.
Still referring to
Since the first end of the heat conducting tube 31 and the inlet 321 of the pump 32 are in communication with the compartment 11, the first working fluid can circulate in the heat conducting tube 31 and the compartment 11. Specifically, the pump 32 draws the first working fluid in the compartment 11 into the heat conducting tube 31 via the inlet 321. When the first working fluid flows through the heat conducting tube 31, the heat of the heat conducting tube 31 is transferred to the first working fluid. Thus, the heat can be discharged through the first end of the heat conducting tube 31 into the compartment 11 together with the first working fluid. Through circulation of the first working fluid, the heat is transferred from the heat collecting assembly 2 into and stored in the compartment 11.
Since the heat exchanger 42 of the heat machine 4 is mounted in the compartment 11 and undergoes heat exchange with the first working fluid in the compartment 11, when the compressor 41 drives the second working fluid in the heat machine 4 to flow, the second working fluid is preheated while passing through the preheater 45. Then, the second working fluid flows through the heat exchanger 42 to absorb the heat in the compartment 11 through heat exchange. Through the two stages of heat absorption, the heat of the second working fluid is capable of driving the gas turbine 43 to output shaft work to the generator 44, and the generator 44 converts the shaft work into electricity. After releasing the heat to drive the gas turbine 43, the second working fluid returns to the compressor 41 for next circulation.
In operation of the floating type solar energy collection/power device according to the present invention, through heat accumulation by the heat collecting assembly 2, the heat energy is transferred through the heat conducting assembly 3 and the first working fluid into and stored in the compartment 11. When the heat machine 4 undergoes heat exchange with the compartment 11, although the heat exchange efficiency per unit time is limited, the unused heat energy still remains in the compartment 11 for heat exchange instead of being dissipated. Furthermore, since the first working fluid in the compartment 11 is a gas having a high heat capacity ratio and having a specific weight smaller than 1, the first working fluid has a higher heat receiving capacity and provides high floating force. The whole power device can float in the air when the floating force is larger than the overall weight of the power device.
The floating type solar energy collection/power device according to the present invention provides enhanced heat storage effect and reduces the loss of heat energy. Thus, floating type solar energy collection/power device according to the present invention generates more energy.
Thus since the invention disclosed herein may be embodied in other specific forms without departing from the spirit or general characteristics thereof, some of which forms have been indicated, the embodiments described herein are to be considered in all respects illustrative and not restrictive. The scope of the invention is to be indicated by the appended claims, rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are intended to be embraced therein.
| Number | Date | Country | Kind |
|---|---|---|---|
| 100124683 | Jul 2011 | TW | national |
