Characteristic absorption spectrum radiation heat absorber, Stirling engine and operation method

Abstract

The invention relates to a characteristic absorption spectrum radiation heat absorber, a Stirling engine and an operation method. By means of the radiation heat absorber, radiation energy can be fast absorbed by working medium gas in the Stirling engine, and when solar energy is insufficient, stable operation of the Stirling engine is ensured by adopting an auxiliary heating mode. A fast heat absorbing heater adopting characteristic absorption spectrum gas to absorb heat mainly comprises a heater base, an optical energy converting device, a heating tube, a combustion chamber and a heating tube valve. The optical energy converting device converts solar energy into radiation energy adjacent to a characteristic absorption peak of the working medium gas, and the working medium directly absorbs radiation energy stereoscopically. The radiation heat absorber is beneficial for enhancing radiation heat exchange at the hot end of the Stirling engine, efficiently using high-temperature energy of a focus sunlight center and reducing the dead volume of the hot end, solves the tube bursting problem of the Stirling heater, improves the engine efficiency, achieves photo-thermal complementary utilization and improves stability of the engine.

Description

technical field

[0001] The invention relates to a radiation heat absorber with a characteristic absorption spectrum, a Stirling engine and an operating method, in particular to a light energy conversion device, one side of the light energy conversion device absorbs focused sunlight and converts it into heat energy, and the heat energy is transferred to the light On the other side of the energy conversion device, it is converted into the radiant energy adjacent to the characteristic absorption peak of the gas working fluid, and radiates heat into the expansion cavity, and can realize light and heat complementarity, which can be applied to the dish-Stirling solar thermal power generation system The Stirling heater with radiant heating. Background technique

[0002] Dish-Stirling solar thermal power generation is a method with the highest photoelectric conversion efficiency in solar thermal power generation technology. At the same time, it is suitable for small distributed ener...

Examples

Embodiment 1

[0041] Such as figure 1 , figure 2 and image 3 As shown, embodiment 1 only adopts solar radiation heating, and controls the valve of the heating pipe so that the first hole structure 20 and the second hole structure 21 are in a closed state, and the working medium gas expands in the expansion chamber to perform work. After the solar radiant energy passes through the light energy conversion device, it radiates a specific narrow-spectrum light wave near the absorption peak of the working fluid gas, conducts radiative heat exchange with the upper end surface of the heater base, and transfers the energy to the working medium gas in the expansion chamber, which is The heated working fluid enters the regenerator through the third hole structure 22, the working fluid passing through the regenerator passes through the cooler and is cooled, and is discharged into the compression chamber to be compressed, and then the working fluid is sequentially Through the cooler, the regenerator...

Embodiment 2

[0043] figure 1 , figure 2 and Figure 4 It is a system configuration diagram of the Stirling engine of the second embodiment. Embodiment 2 adopts solar radiation and combustion auxiliary heat source for heating, controls the heating pipe valve 4 so that the first hole structure 20 and the second hole structure 21 are in an open state, and adjusts the heating pipe valve to control the passage through the second hole structure 21 and the third hole structure The flow rate ratio of the working medium gas is 22, the working medium gas expands in the expansion chamber, and the working medium expands in the expansion chamber to perform work. After the solar radiation energy passes through the light energy conversion device, it radiates a specific narrow-spectrum light wave near the absorption peak of the working medium gas. Perform radiative heat exchange with the upper end surface of the heater base, and transfer energy to the working medium gas in the expansion chamber, part o...

technical field

[0001] The invention relates to a radiation heat absorber with a characteristic absorption spectrum, a Stirling engine and an operating method, in particular to a light energy conversion device, one side of the light energy conversion device absorbs focused sunlight and converts it into heat energy, and the heat energy is transferred to the light On the other side of the energy conversion device, it is converted into the radiant energy adjacent to the characteristic absorption peak of the gas working fluid, and radiates heat into the expansion cavity, and can realize light and heat complementarity, which can be applied to the dish-Stirling solar thermal power generation system The Stirling heater with radiant heating. Background technique

[0002] Dish-Stirling solar thermal power generation is a method with the highest photoelectric conversion efficiency in solar thermal power generation technology. At the same time, it is suitable for small distributed ener...

Examples

Embodiment 1

[0041] Such as figure 1 , figure 2 and image 3 As shown, embodiment 1 only adopts solar radiation heating, and controls the valve of the heating pipe so that the first hole structure 20 and the second hole structure 21 are in a closed state, and the working medium gas expands in the expansion chamber to perform work. After the solar radiant energy passes through the light energy conversion device, it radiates a specific narrow-spectrum light wave near the absorption peak of the working fluid gas, conducts radiative heat exchange with the upper end surface of the heater base, and transfers the energy to the working medium gas in the expansion chamber, which is The heated working fluid enters the regenerator through the third hole structure 22, the working fluid passing through the regenerator passes through the cooler and is cooled, and is discharged into the compression chamber to be compressed, and then the working fluid is sequentially Through the cooler, the regenerator...

Embodiment 2

[0043] figure 1 , figure 2 and Figure 4 It is a system configuration diagram of the Stirling engine of the second embodiment. Embodiment 2 adopts solar radiation and combustion auxiliary heat source for heating, controls the heating pipe valve 4 so that the first hole structure 20 and the second hole structure 21 are in an open state, and adjusts the heating pipe valve to control the passage through the second hole structure 21 and the third hole structure The flow rate ratio of the working medium gas is 22, the working medium gas expands in the expansion chamber, and the working medium expands in the expansion chamber to perform work. After the solar radiation energy passes through the light energy conversion device, it radiates a specific narrow-spectrum light wave near the absorption peak of the working medium gas. Perform radiative heat exchange with the upper end surface of the heater base, and transfer energy to the working medium gas in the expansion chamber, part o...

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