Vacuum Copper-Tube Solar Heat Absorber for Low-Loss Transfer
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Solution Overview
Problem
Existing solar heat collection systems face high manufacturing costs, risk of glass bursting due to temperature differences, and difficulties in cleaning and heat transfer efficiency due to the use of double-layer glass tubes and metal tubes with inner glass coatings.
Innovation Solution
A vacuum heat transfer type efficient solar panel system using copper tubes in a vacuum state with a polyurethane heat preservation layer outside, directly transferring solar energy to a water tank, reducing heat loss and eliminating the need for a medium in heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If double-layer evacuated glass tube is used, then heat insulation performance is improved, but manufacturing cost increases and risk of glass bursting due to temperature difference increases
Solution Approach 1:
The invention extracts and removes the inner glass layer from the traditional double-layer evacuated glass tube structure, retaining only the outer glass tube. This simplifies the structure to eliminate the temperature difference between inner and outer glass layers that causes bursting risks, while maintaining the vacuum insulation effect through the vacuum chamber between the glass tube and metal tube.
Solution Approach 2:
The invention changes the structural parameters by transitioning from a double-layer glass tube to a single-layer glass tube configuration. This parameter change eliminates the thermal stress problem caused by temperature differences between multiple glass layers while preserving the vacuum insulation functionality.
2Loss of energy
If double-layer evacuated glass tube is used, then heat insulation performance is improved, but manufacturing cost increases
Solution Approach 1:
The invention extracts and removes the inner glass layer from the traditional double-layer evacuated glass tube structure, retaining only the outer glass tube. This simplifies the structure to eliminate the temperature difference between inner and outer glass layers that causes bursting risks, while maintaining the vacuum insulation effect through the vacuum chamber between the glass tube and metal tube.
Solution Approach 2:
The invention changes the structural parameters by transitioning from a double-layer glass tube to a single-layer glass tube configuration. This parameter change eliminates the thermal stress problem caused by temperature differences between multiple glass layers while preserving the vacuum insulation functionality.
3Device complexity
If single-layer glass tube is used, then structure is simplified and sealing is easier, but risk of glass bursting is not avoided
Solution Approach 1:
The invention introduces a vacuum chamber as an intermediary space between the glass tube and metal tube. This vacuum layer acts as a thermal insulator that reduces heat transfer to the glass tube, thereby preventing the glass from reaching temperatures that would cause bursting, while still allowing the use of a simpler single-layer glass structure.
4Use of energy by moving object
If metal tube with heat absorption coating is used, then heat transfer efficiency is improved, but dirt accumulation on inner wall becomes difficult to clean
Solution Approach 1:
The invention extracts and removes the metal tube with heat absorption coating from the heat transfer path. Instead, it uses a glass tube that can be easily cleaned, thereby eliminating the cleaning difficulty associated with metal tube inner walls while maintaining heat transfer efficiency through the vacuum heat transfer mechanism.
5Use of energy by moving object
If heat transfer medium is used in metal tube, then heat transfer is enabled, but freezing problem occurs in engine pipeline
Solution Approach 1:
The invention replaces the traditional heat transfer medium (liquid circulating through metal tubes) with a vacuum-based heat transfer mechanism. The vacuum chamber between the glass tube and metal tube enables direct radiative and conductive heat transfer without requiring a liquid medium, thereby eliminating the freezing risk associated with engine pipelines.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Significantly improves heat transfer efficiency and reduces heat loss during circulation, while preventing freezing issues and simplifying the system's structure and maintenance.
Implementation Method 1
the interiors of the copper tubes are in vacuum states
Implementation Method 2
heat preservation is realized at the outside of the tube by polyurethane
Implementation Method 3
heat absorption coating is coated on an outer surface of the heat absorption coil
Implementation Method 4
this part of energy is directly, quickly and efficiently transferred to a copper coil in the water tank through the copper tubes
Data Source
AI summary
The present invention provides a vacuum heat transfer type efficient solar panel heat absorption system, including a flat plate collector, wherein a heat absorption coil is arranged in the flat plate collector, and a heat absorption coil valve is arranged on the heat absorption coil stretching out from the flat plate collector; a heat exchange coil is arranged in a pressure bearing water tank, a water inlet and a water outlet are formed in the pressure bearing water tank, a vacuum pump is arranged on a heat transfer pipeline, the heat absorption coil, the heat transfer pipeline and the heat exchange coil are all copper tubes, the interiors of the copper tubes are in vacuum states, and heat absorption coating is coated on an outer surface of the heat absorption coil. In the present invention, the interiors of the copper tubes are vacuumized, when a part of energy radiated by the sun is transferred onto the copper tubes in a heat collection plate, this part of energy is directly, quickly and efficiently transferred to a copper coil in the water tank through the copper tubes, as the interiors of the copper tubes are vacuumized, and the polyurethane at the outside of the tubes preserve the heat in the process, the heat transfer efficiency is greatly improved, and the heat loss during the heat transfer of a flowing medium in the tubes in a circulation process is greatly reduced.