Solar thermal collector, solar thermal heater and method of manufacturing the same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F24J-002/48
F24J-002/34
F24J-002/20
F24J-002/46
출원번호
US-0017324
(2013-09-04)
등록번호
US-9482448
(2016-11-01)
발명자
/ 주소
Tsai, Jen-Huang
출원인 / 주소
Taiwan Ziolar Technology Co. Ltd.
대리인 / 주소
Jianq Chyun IP Office
인용정보
피인용 횟수 :
0인용 특허 :
7
초록▼
A solar thermal collector including a carrier, channels and a solar selective coating is provided. The channels are embedded in the carrier for a heat transfer fluid flowing therein. The solar selective coating is deposited on an outer surface of the carrier. The solar selective coating includes a d
A solar thermal collector including a carrier, channels and a solar selective coating is provided. The channels are embedded in the carrier for a heat transfer fluid flowing therein. The solar selective coating is deposited on an outer surface of the carrier. The solar selective coating includes a damping layer, an absorbing layer and an anti-reflecting layer. The damping layer is deposited on the outer surface of the carrier. The absorbing layer is deposited on the damping layer, wherein the absorbing layer has a transition region including plural sub-layers and located adjacent to the damping layer. The anti-reflecting layer is deposited on the absorbing layer, wherein a light beam is adapted to enter the absorbing layer through the anti-reflecting layer, and irradiation energy of the light beam is transformed by the collector into thermal energy, which is then transmitted to the heat transfer fluid in the channels.
대표청구항▼
1. A solar thermal collector, comprising: a carrier;a plurality of channels, embedded in the carrier for a heat transfer fluid flowing therein; anda solar selective coating, deposited on an outer surface of the carrier, and the solar selective coating comprising: a damping layer, deposited by sputte
1. A solar thermal collector, comprising: a carrier;a plurality of channels, embedded in the carrier for a heat transfer fluid flowing therein; anda solar selective coating, deposited on an outer surface of the carrier, and the solar selective coating comprising: a damping layer, deposited by sputtering on the outer surface of the carrier;an absorbing layer, deposited by sputtering on the damping layer, wherein the absorbing layer has a transition region adjacent to the damping layer, and the absorbing layer in the transition region comprises a plurality of sub-layers; andan anti-reflecting layer, deposited by sputtering on the absorbing layer, wherein a light beam is adapted to enter the absorbing layer and damping layer through the anti-reflecting layer, and irradiation energy of the light beam is transformed by the absorber into thermal energy, which is then transmitted to the heat transfer fluid in the channels. 2. The solar thermal collector as claimed in claim 1, wherein a material of the carrier comprises metal or plastic with an emissivity greater than or equal to 0.1, the solar selective coating further comprises a metal layer, which is deposited between the carrier and the damping layer, and the emissivity of the metal layer is lower than an emissivity of the carrier. 3. The solar thermal collector as claimed in claim 2, wherein a material of the carrier comprises stainless steel (SUS) or polymer. 4. The solar thermal collector as claimed in claim 1, wherein a material of the carrier comprises metal with an emissivity less than 0.1. 5. The solar thermal collector as claimed in claim 1, wherein the carrier comprises two shaped boards, the two shaped boards are attached to each other, and the channels are formed between the two shaped boards. 6. The solar thermal collector as claimed in claim 1, wherein the carrier and the channels are integrally formed through a single material. 7. The solar thermal collector as claimed in claim 1, further comprising: at least one connecting tube which is deployed at one side of the carrier and connected to the channels. 8. The solar thermal collector as claimed in claim 1, wherein a material of the damping layer comprises metal nitride, metal carbide or metal carbon nitride. 9. The solar thermal collector as claimed in claim 1, wherein a material of the absorbing layer comprises metal oxide and metal nitride, metal carbide or metal carbon nitride. 10. The solar thermal collector as claimed in claim 9, wherein a proportion of nitrogen content relative to oxygen content in the sub-layers or a proportion of carbon content relative to oxygen content thereof is gradually decreased towards a direction away from the damping layer. 11. The solar thermal collector as claimed in claim 10, wherein the proportion of nitrogen content relative to oxygen content in the sub-layers or the proportion of carbon content relative to oxygen content thereof is gradually decreased to zero towards the direction away from the damping layer. 12. The solar thermal collector as claimed in claim 1, wherein a material of the anti-reflecting layer comprises silicon oxide or silicon nitride. 13. A solar thermal heater, comprising: the solar thermal collector as claimed in claim 1; anda storage device, connected to the solar thermal collector, and storing the heat transfer fluid. 14. A method for manufacturing a solar thermal collector, comprising: providing a carrier, wherein a plurality of channels are embedded in the carrier;forming a solar selective coating on an outer surface of the carrier, comprising: forming a damping layer by sputtering on the outer surface of the carrier;forming an absorbing layer by sputtering on the damping layer, wherein the absorbing layer has a transition region adjacent to the damping layer, and the step of forming the absorbing layer in the transition region comprises sequentially forming a plurality of sub-layers; andforming an anti-reflecting layer by sputtering on the absorbing layer. 15. The method for manufacturing the solar thermal collector as claimed in claim 14, further comprising: forming a metal layer by sputtering on the outer surface of the carrier before the step of forming the damping layer on the outer surface of the carrier, wherein an emissivity of the metal layer is lower than an emissivity of the carrier. 16. The method for manufacturing the solar thermal collector as claimed in claim 14, wherein the step of providing the carrier comprises: providing two shaped boards; andattaching the two shaped boards, and forming the channels embedded in the carrier between the two shaped boards. 17. The method for manufacturing the solar thermal collector as claimed in claim 14, wherein the step of providing the carrier comprises: integrally forming the carrier and the channels through a single material. 18. The method for manufacturing the solar thermal collector as claimed in claim 14, further comprising: forming at least one connecting tube at one side of the carrier, wherein the at least one connecting tube is connected to the channels. 19. The method for manufacturing the solar thermal collector as claimed in claim 14, wherein in the step of sequentially forming the sub-layers, a proportion of nitrogen content relative to oxygen content in the sub-layers or a proportion of carbon content relative to oxygen content thereof is gradually decreased towards a direction away from the damping layer. 20. The method for manufacturing the solar thermal collector as claimed in claim 14, wherein in the step of sequentially forming the sub-layers, a proportion of nitrogen content relative to oxygen content in the sub-layers or a proportion of carbon content relative to oxygen content thereof is gradually decreased to zero towards the direction away from the damping layer.
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