Systems and methods for full spectrum solar thermal energy harvesting and storage by molecular and phase change material hybrids

Patent metadata

Field	Value
Publication number	US-12061018-B2
Application number	US-202017613959-A
Country	US
Kind code	B2
Filing date	Jun 24, 2020
Priority date	Jun 26, 2019
Publication date	Aug 13, 2024
Grant date	Aug 13, 2024

Abstract

A method for full spectrum solar thermal energy harvesting and collection includes storing a first heat in a phase change material in the presence of solar radiation based on absorbing full spectrum solar radiation, harvesting a second heat from the phase change material in the presence of solar radiation, storing molecular energy in a molecular storage material in the presence of solar radiation based on absorbing full spectrum solar radiation, transferring the second heat from the phase change material to the molecular storage material in the absence of solar radiation, and harvesting the molecular energy released by the molecular storage material.

First claim

What is claimed is:

1. An apparatus for solar thermal harvesting and collection, the apparatus comprises:
an enclosure, wherein the enclosure includes:
a bottom layer;
a middle layer disposed on the bottom layer;
a top layer disposed on the middle layer, wherein the top layer includes a molecular storage material configured to absorb full spectrum solar radiation; and
a tube that is configured to connect the bottom layer and the top layer.

2. The apparatus of claim 1 , wherein the bottom layer includes a phase change material configured to absorb full spectrum solar radiation.

3. The apparatus of claim 1 , wherein the middle layer contains an insulating material.

4. The apparatus of claim 1 , wherein the tube is configured to transfer heat between the bottom layer and the top layer.

5. The apparatus of claim 4 , wherein the tube is configured to allow a heat transfer fluid to flow therein.

6. The apparatus of claim 5 , wherein the tube is configured to harvest heat out of the apparatus.

7. The apparatus of claim 2 , wherein the phase change material includes a solid phase change material.

8. The apparatus of claim 7 , wherein energy is released during a phase transition of the solid phase change material into a liquid phase change material.

9. The apparatus of claim 1 , wherein the molecular storage material includes norbornadiene-quadricyclane.

10. A method for solar thermal harvesting and collection, the method comprising:
storing a first heat in a phase change material in the presence of solar radiation,
based on absorbing full spectrum solar radiation;
harvesting a second heat from the phase change material in the presence of solar radiation;
storing molecular energy in a molecular storage material in the presence of solar radiation, based on absorbing full spectrum solar radiation;
transferring the second heat from the phase change material to the molecular storage material in the absence of solar radiation; and
harvesting the molecular energy released by the molecular storage material.

11. The method of claim 10 , wherein the second heat is transferred out of the phase change material through a heat transfer fluid.

12. The method of claim 10 , wherein the molecular storage material is configured to isomerize a parent molecule into a child molecule upon exposure to full spectrum solar radiation.

13. The method of claim 12 , wherein the child molecule includes a higher energy state than the parent molecule.

14. The method of claim 13 , wherein the second heat is transferred from the phase change material to the molecular storage material through a heat transfer fluid.

15. The method of claim 14 , further comprising isomerizing the child molecule into the parent molecule thereby releasing molecular energy, by heat from the heat transfer fluid.

16. The method of claim 10 , wherein the phase change material includes a solid phase change material.

17. The method of claim 16 , further comprising transforming the solid phase change material into a liquid phase change material.

18. The method of claim 17 , further comprising storing, in the liquid phase change material, latent heat absorbed from full spectrum solar radiation.

19. An apparatus for solar thermal harvesting and collection, the apparatus comprises:
an enclosure, wherein the enclosure includes:
a bottom layer including a phase change material, configured for storing heat in a phase change material in the presence of solar radiation, based on absorbing full spectrum solar radiation;
a middle layer including silica aerogel, disposed on the bottom layer;
a top layer including a molecular storage material disposed on the middle layer;
an anti-reflective glass disposed on a top surface of the top layer, configured to permit the transmission of full spectrum solar radiation;
a tube that is configured to connect the bottom layer and the top layer, and the tube is configured to allow a heat transfer fluid to flow therein;
a first valve disposed on the tube, when actuated, provides for thermal communication between the top layer and the bottom layer; and
a second valve, disposed on a portion of the tube connected to the bottom layer, the second valve, when actuated, provides for the harvesting of the stored heat.

Assignees

• Univ Houston System

Inventors

• Ghasemi Hadi
• Kashyap Varun
• Lee T Randall
• Sakunkaewkasem Siwakorn

Classifications

• F24S70/65

  Combinations of two or more absorbing elements · CPC title

• F24S80/56

  characterised by means for preventing heat loss · CPC title

• F24S60/10

  using latent heat · CPC title

• F24S70/10

  characterised by the absorbing material (absorbing coatings or surface treatment for increasing absorption F24S70/20) · CPC title

• F24S20/20

  Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants · CPC title