TWI611151B - Solar thermal waste heat recovery device - Google Patents

Abstract

The present invention relates to a solar thermal energy waste heat recovery device, which is provided with a circulation line for a fluid to pass through, and a second end of the circulation line is provided with an inlet end and an outlet end, and the mirror is provided with a first An inlet conduit and a first outlet conduit, the first inlet conduit being in communication with the inlet end. a solar engine is provided with a cooling portion, the cooling portion is provided with a second water inlet pipe and a second water outlet pipe, the second water inlet pipe is connected to the outlet end, and the second water outlet pipe is connected to the first water outlet pipe A water outlet pipe is connected. The fluid is heat-exchanged through the circulation line and/or the cooling unit, and the fluid is heated to be used as hot water. Energy saving can be achieved without additional heat or heating.

Description

Solar thermal waste heat recovery device

The invention relates to a solar waste heat recovery structure which can fully utilize the residual waste heat of the mirror and the heat energy generated when the solar engine works, and performs heat exchange to generate hot water for use by the people.

At present, there is a growing shortage of energy on the planet, so the search for alternative energy systems is an important goal that cannot be delayed. Due to the wide range of applications of solar energy, such as solar power, solar water heaters or the use of solar-powered Stirling engines, it is a common application technology, and solar energy has become one of the most potential alternative energy sources.

Therefore, there is a new patent No. M432146 "Disc-type concentrating solar photovoltaic structure" announced by the Republic of China on June 21, 101, which discloses that it contains a homogenizer and is provided with a V-groove. a concentrating solar cell is arranged at the bottom of the trough; a concentrating solar cell is disposed at the bottom of the groove of the V-shaped groove; and an active heat dissipating module is disposed at the bottom of the homogenizer to obtain the concentrating light The active heat dissipation of the solar cell can not only reduce the operating temperature of the concentrating solar cell, but also increase the power generation efficiency, and can also recover the waste heat of the homogenizer, improve the life of the concentrating solar cell, and the like.

Although the patent has a function of recycling waste heat, its heat dissipation module uses a refrigerant tube as a cooling function, which is relatively expensive, and the heat dissipation module is not disposed on the mirror, and cannot be reflected on the mirror. To the residual thermal energy of the solar cell, all waste heat energy cannot be effectively utilized.

In addition, there is a new patent No. M454523 "Energy-efficient solar power generation device" announced by the Republic of China on June 1, 102, which discloses: a solar power generation device is included; a heat conduction device is disposed, and the heat dissipation device is disposed at The solar power generation device does not receive a side of the sunlight, and the heat dissipation device is in contact with the solar power generation device; a cooling water circulation device is connected to the heat dissipation device to form a circulation pipeline; a collecting device, the recovered warm water collecting device comprises a warm water collecting trough and a recovered warm water inlet pipe, wherein the recovered warm water inlet pipe is respectively connected with the warm water collecting trough and the heat dissipating device; The temperature difference generating device is disposed on a circulation line between the heat dissipation device and the cooling water circulation device; and the cooling water circulation device is connected to the heat dissipation device to form a circulation line, and the cooling water circulation device and the warm water The sump can store different hot and cold working liquids separately, and can provide good and effective dispersion for solar power generation devices. Mechanism.

However, in the patent case, when the temperature of the working fluid measured by a temperature sensor reaches a predetermined value, a controller can control and change the flow direction of a switching valve so that the work has passed through the solar power generating device and absorbs heat. The liquid can be flowed into the warm water sump via the recovered warm water inlet pipe, and the warm water sump can store the higher temperature working liquid (ie, warm water). When the temperature sensor detects that the temperature of the working fluid is lower than the predetermined value, the controller controls the flow direction of the switching valve to switch back to the original direction, so that it again passes through the solar power generating device. Heat up again. However, such a structure is easy because the sun's heat energy is insufficient in winter or rainy days. Even if the working fluid repeatedly absorbs heat through the solar power generation device, the working fluid temperature cannot reach a predetermined value, but the original heat energy is taken away. The temperature of the working fluid in the cooling water tank is continuously lowered, so the working liquid is only meaningless repeated flow, which is a waste of time.

Accordingly, in view of the current solar collector construction, the above disadvantages are obtained. Therefore, the present invention provides a solar thermal energy waste heat recovery device, comprising: a mirror, which is provided with a circulation pipeline. For the passage of a fluid, the two ends of the circulation line are respectively provided with an inlet end and an outlet end, and the mirror is provided with a first water inlet pipe and a first water outlet pipe, and the first water inlet pipe is connected with The inlet ends are connected. a solar engine is fixed on the mirror, the solar engine is provided with a cooling portion, and the cooling portion is respectively provided with a second water inlet pipe and a second water outlet pipe, and the second water inlet pipe is connected to the The outlet end is in communication, and the second outlet line is in communication with the first outlet line. The fluid is heated by the circulation line and/or the cooling unit to heat the fluid and be used as hot water.

The present invention further includes a bypass line and a first bypass valve, wherein the bypass line is respectively provided with a first end and a second end, the first end is connected to the first water inlet pipe and the The second end is connected to the second water inlet pipe, and the first bypass valve is disposed at the first end, the first water inlet pipe and the inlet end are connected to each other. Wherein, the first bypass valve controls the flow direction of the fluid according to whether a temperature detector monitors whether the temperature in the circulation pipeline reaches a preset value.

When the temperature sensor detects that the temperature in the circulation pipeline does not reach the preset value, the first bypass valve is controlled to start to flow the fluid from the first water inlet pipeline to the bypass pipe. Inside the road, it flows to the cooling section.

When the temperature sensor detects that the temperature in the circulation pipeline reaches the preset value, the first bypass valve is controlled to stop starting, so that the fluid is turned on by the first water inlet pipeline to flow through the inlet end. In the circulation line, it flows to the cooling portion.

The present invention further provides a second bypass valve, the second bypass valve is disposed at a position where the outlet end communicates with the second water inlet pipe, and the second bypass valve is connected to a branch line, Manually or automatically, selecting to activate the second bypass valve, thereby interrupting communication between the second water inlet pipe and the outlet end, and controlling the fluid to flow directly from the branching pipe without flowing through the The cooling portion of the solar engine.

The circulation line is attached to the back or inside of the mirror.

The circulation line is arranged in a spiral coil shape or a meandering curve.

The mirror is fixed on a support frame, and the first water inlet pipe and the first water outlet pipe are disposed inside the support frame.

The above solar engine is a Stirling engine.

The solar engine engine is provided with a heat concentration portion located at a reflection focusing position of one of the mirrors.

According to the above technical features, the following advantages are obtained:

1. By passing the fluid through the circulation pipeline, the residual heat of the mirror can be fully utilized for heat exchange to heat up, and the fluid flows further through the solar engine, and the fluid is heated by the heat energy generated during the work for the purpose of generating heat. The hot water is used for the people's livelihood, and there is no need to increase the heat dissipation or heating device to save energy.

2. The fluid can be exchanged with the mirror for heat exchange, which can effectively remove excess waste heat from the mirror to avoid deformation of the mirror due to overheating.

3. The fluid can be passed through the cooling portion of the solar engine to dissipate heat from the solar engine to avoid overheating and damage.

4. When the heat energy of the sunlight is insufficient, the mirror and the circulation pipeline will not generate residual waste heat, and the fluid may be directly flowed to the cooling portion of the solar engine, and the flow may not flow through the cycle where the temperature is less than the preset value. The pipeline is used to avoid causing the temperature of the fluid to rise and fall, and the time spent in the flow to save energy.

5. After the fluid passes through the circulation pipeline, the fluid can be directly discharged through the branch pipeline manually or automatically, without flowing through the cooling portion of the solar engine, or directly used as hot water.

(1)‧‧‧Mirror

(11)‧‧‧Support frame

(12) ‧‧‧Circulation lines

(121)‧‧‧ Imported end

(122) ‧‧‧export end

(13)‧‧‧First water inlet pipe

(14) ‧‧‧First water outlet

(2) ‧‧‧Solar engine

(21)‧‧‧Department of Cooling

(22) ‧‧‧Second water inlet

(23) ‧‧‧Second outlet pipe

(24) ‧‧‧Hot Concentration Department

(3) ‧‧‧ bypass line

(31) ‧‧‧ first end

(32) ‧‧‧ second end

(4)‧‧‧First bypass valve

(41)‧‧‧Temperature Detector

(5) ‧‧‧Second bypass valve

(51) ‧‧ ‧Diversion piping

(1A)‧‧‧Mirror

(12A) ‧‧‧Circulation line

[First figure] is a perspective view of the present invention.

[Second figure] is a simple configuration diagram of the main components of the present invention.

[Third image] is a schematic view showing that the circulation line of the present invention is spirally wound.

[Fourth figure] is a schematic view of the fluid passing through the circulation line of the present invention.

[Fifth Figure] is a schematic view of the fluid passing through the bypass line of the present invention.

[Sixth Diagram] is a schematic view of the fluid flowing through the branch line of the present invention.

[Seventh] is a schematic view showing that the circulation piping is formed in a meandering curve according to another embodiment of the present invention.

Referring to the first, second and third figures, the embodiment of the invention comprises a mirror (1), a solar engine (2), a bypass line (3), and a first bypass valve (4). And a second bypass valve (5), wherein:

The mirror (1) is fixed to a support frame (11). A circulation line (12) is provided on the back or inside of the mirror (1) for a fluid to pass therethrough. The circulation line (12) is arranged in a spiral coil shape. Further, the two ends of the circulation line (12) are respectively provided with an inlet end (121) and an outlet end (122). A first water inlet pipe (13) and a first water outlet pipe (14) are respectively disposed inside the support frame (11), and the first water inlet pipe (13) is connected to the inlet end (121). .

A solar engine (2) is attached to the mirror (1). The solar engine (2) is provided with a cooling portion (21), and the cooling portion (21) is respectively provided with a second water inlet pipe (22) and a second water outlet pipe (23). The second water inlet pipe (22) is in communication with the outlet end (122), and the second water outlet pipe (23) is in communication with the first water outlet pipe (14). Further, the solar engine (2) is provided with a heat concentration portion (24) which is located at a reflection focusing position of one of the mirrors (1). The solar engine (2) can be a Stirling engine.

a bypass line (3) is respectively provided with a first end (31) and a second end (32), the first end (31) is connected to the first water inlet pipe (13) and the inlet The end (121) is connected to the position. The second end (32) is in communication with the second water inlet conduit (22).

The first bypass valve (4) is disposed at a position where the first end (31), the first water inlet pipe (13) and the inlet end (121) are in communication. The first bypass valve (4) controls the flow direction of the fluid according to whether a temperature detector (41) monitors whether the temperature in the circulation line (12) reaches a predetermined value. That is, when the temperature in the circulation line (12) has not reached the preset value, the temperature detector (41) controls the first bypass valve (4) to be activated, thereby turning on the fluid by the first The water inlet line (13) flows into the bypass line (3). Until the temperature detector (41) detects that the temperature in the circulation line (12) has reached a preset value, the first bypass valve (4) is controlled to stop starting, and the fluid can be turned on by the The first water inlet line (13) flows into the inlet end (121) and is then subjected to heat exchange through the circulation line (12).

a second bypass valve (5) is disposed at a position where the outlet end (122) communicates with the second water inlet pipe (22), and the second bypass valve (5) is connected to a branch pipe (51). When the second bypass valve (5) is activated, the communication between the second water inlet conduit (22) and the outlet port (122) is interrupted, and the fluid is controlled to flow directly from the branch conduit (51).

In use, as shown in the third and fourth figures, when the sun is sunny in summer or sunny day, the sunlight is irradiated on the mirror (1), and the sunlight is concentrated on the reflection focus position via the mirror (1). The heat concentration portion (24) can be heated to supply the heat energy required for the solar engine (2) to work. Further, the mirror (1) does not pass through the residual waste heat of the focus reflection, and the temperature in the circulation line (12) can be raised to the preset value via heat conduction. In this way, when the temperature detector (41) detects that the temperature in the circulation line (12) reaches the preset value, the first bypass valve (4) is controlled to stop starting, and the fluid can be The first water inlet pipe (13) inside the support frame (11) flows in, then flows through the first bypass valve (4) and the inlet end (121) into the circulation pipe (12), so that The fluid exchanges heat with the circulation line (12) to remove excess waste heat. The fluid that has been heated can then flow into the second water inlet conduit (22) via the outlet end (122) and the second bypass valve (5) so that the fluid can pass through the cooling portion (21). After the heat exchange, the temperature is raised again to provide heat dissipation for the solar engine (2). The fluid that has finally warmed up can be discharged from the second water outlet pipe (23) of the cooling portion (21), and The first water outlet pipe (14) is collected and discharged for use as hot water. In this way, by the action of the heat dissipation and heating of the fluid, the waste heat of the mirror (1) and the heat energy generated by the solar engine (2) can be fully utilized to generate hot water for the people. . At the same time, there is no need to increase the heat dissipation or heating device, so as to save energy.

As shown in the third and fifth figures, when the sunlight is insufficient in winter, cloudy or rainy days, the sunlight cannot be sufficiently irradiated on the mirror (1), so that no residual waste heat is generated to make the circulation line. The temperature rise within (12) reaches the preset value. When the temperature detector (41) detects that the temperature in the circulation line (12) has not reached the preset value, the first bypass valve (4) is controlled to start. The fluid may flow from the first water inlet pipe (13) inside the support frame (11), and then through the first bypass valve (4), through the first bypass valve (4) Control flows directly into the bypass line (3) via the first end (31) without flowing fluid into the circulation line (12). The fluid then flows into the second water inlet conduit (22) via the second end (32) of the bypass conduit (3) so that the fluid can be directly heatd through the cooling portion (21). The heat is exchanged to provide heat dissipation for the solar engine (2). The fluid that is finally warmed up can be discharged from the second outlet conduit (23) of the cooling portion (21), and is collected by the first outlet conduit (14) for collection for use as hot water. In this way, by the action of heat dissipation and heating of the fluid, hot water can be generated for use in people's livelihood. At the same time, there is no need to flow through the circulation line (2) whose temperature is not up to the preset value, so as to avoid the temperature of the fluid not rising and falling, and the time spent flowing, thereby achieving the energy saving effect.

As shown in the sixth figure, after the fluid passes through the circulation line (12), the second bypass valve (5) can be selectively activated by manual or automatic means, thereby interrupting the second water inlet line. (22) communicating with the outlet end (122), and controlling the fluid to flow directly from the branch line (51) without flowing through the cooling portion (21) of the solar engine (2) Directly used as hot water.

Another embodiment of the present invention, as shown in the seventh figure, wherein the circulation line (12A) is formed on the back or inside of the mirror (1A) and is formed in a meandering shape. You can also make the most of the mirror (1A) Residual waste heat and heat generated by the solar engine when it works, thereby generating hot water for use by the people. At the same time, there is no need to increase the heat dissipation or heating device to achieve energy saving.

However, the above description is only two of the embodiments of the present invention, and the scope of the patent application and the scope of the description of the present invention are not limited thereto. It is still within the scope of the protection covered by the scope of the invention.

(1)‧‧‧Mirror

(11)‧‧‧Support frame

(12) ‧‧‧Circulation lines

(122) ‧‧‧export end

(13)‧‧‧First water inlet pipe

(14) ‧‧‧First water outlet

(2) ‧‧‧Solar engine

(21)‧‧‧Department of Cooling

(22) ‧‧‧Second water inlet

(23) ‧‧‧Second outlet pipe

(24) ‧‧‧Hot Concentration Department

(3) ‧‧‧ bypass line

(31) ‧‧‧ first end

(32) ‧‧‧ second end

(4)‧‧‧First bypass valve

(41)‧‧‧Temperature Detector

(5) ‧‧‧Second bypass valve

(51) ‧‧ ‧Diversion piping

Claims (9)

A solar thermal energy waste heat recovery device comprises: a mirror, which is provided with a circulation pipeline for a fluid to pass through, wherein the two ends of the circulation pipeline are respectively provided with an inlet end and an outlet end, and the mirror is provided with a mirror a first water inlet pipe and a first water outlet pipe, the first water inlet pipe is connected to the inlet end; a solar engine is fixed to the mirror, and the solar engine is provided with a cooling portion, the cooling The second water inlet pipe and the second water outlet pipe are respectively connected to the outlet end, and the second water outlet pipe is connected to the first water outlet pipe; The fluid is heated by the circulation line and/or the cooling portion to heat the fluid for use as hot water; a bypass line and a first bypass valve, the bypass line is separately provided a first end and a second end, the first end is connected to a position where the first water inlet pipe and the inlet end are in communication, and the second end is connected to the second water inlet pipe, the first end a bypass valve is disposed at the first end, the first inlet pipe Where the road and the inlet end are in communication, the first bypass valve controls the flow direction of the fluid according to whether a temperature detector monitors whether the temperature in the circulation pipeline reaches a predetermined value. The solar thermal waste heat recovery device according to claim 1, wherein the temperature sensor detects that the temperature in the circulation pipeline does not reach the preset value, and then controls the first bypass valve to be activated. The flow of the fluid from the first water inlet pipe into the bypass pipe to the cooling portion is performed. The solar thermal waste heat recovery device according to claim 1, wherein the temperature sensor detects that the temperature in the circulation pipeline reaches the preset value, and then controls the first bypass valve to stop starting, The flow of the fluid from the first water inlet pipe to the circulation pipe through the inlet end flows to the cooling portion. The solar thermal waste heat recovery device according to claim 1, further comprising a second bypass valve, wherein the second bypass valve is disposed at a position where the outlet end communicates with the second water inlet pipe, The second bypass valve is connected to a branching line, and the second bypass valve is selectively activated by manual or automatic means, thereby interrupting the communication between the second water inlet pipe and the outlet end, and controlling the Fluid flows directly from the split line without flowing through the cooling section of the solar engine. The solar thermal waste heat recovery device according to claim 1, wherein the circulation pipe is attached to the back or inside of the mirror. The solar thermal waste heat recovery device according to claim 1, wherein the circulation pipeline is arranged in a spiral coil shape or a meandering curve. The solar thermal waste heat recovery device according to claim 1, wherein the mirror is fixed to a support frame, and the first water inlet pipe and the first water outlet pipe are disposed inside the support frame. The solar thermal waste heat recovery device according to claim 1, wherein the solar engine is a Stirling engine. The solar thermal waste heat recovery device according to claim 1, wherein the solar energy engine is provided with a heat concentration portion located at a reflection focusing position of the mirror.