Rooftop Reflective Flag System for Solar Heat Reduction
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Solution Overview
Problem
Existing roof cooling solutions, such as reflective roofing materials and removable tarps, face issues like permanence, damage from weather, and inefficient heat management, leading to increased heating costs and structural hazards.
Innovation Solution
A roof reflector system comprising parallel rows of reflective flags supported by brackets, which can be easily installed, removed, and are resistant to wind and weather, effectively shading the roof from solar radiation while allowing snow and ice to melt during winter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If reflective roofing materials are applied to the roof, then solar radiation reflection is improved, but the roof cannot be easily modified or removed and snow/ice melting is prevented during winter
Solution Approach 1:
The patent applies dynamics by making the reflective surface removable and repositionable. The reflective panels can be taken down during winter months when snow and ice melting is needed, and reinstalled during summer months when solar radiation reflection is desired. This dynamic approach allows the system to adapt to seasonal changes rather than being permanently fixed.
Solution Approach 2:
The patent implements periodic action by installing the reflective panels during hot summer months and removing them during winter months. This periodic deployment aligns with the seasonal cycle of solar radiation intensity and snow/ice accumulation patterns, providing reflective protection when needed and allowing natural snow melting when beneficial.
2Object-affected harmful factors
If large tarps are used to cover the entire roof, then solar radiation reflection is improved, but the system becomes difficult to size, position, anchor, and is easily damaged by storms
Solution Approach 1:
The patent applies segmentation by dividing the roof into multiple zones, each covered by individual reflective panels rather than one large tarp. Each panel is independently supported by its own framework, making the system more manageable, easier to install and remove, and more resistant to wind damage since failure of one panel does not affect the entire roof coverage.
Solution Approach 2:
The patent uses flexible reflective panels that can conform to the roof surface while being supported by a lightweight framework. These thin film panels are more resistant to wind damage compared to large rigid tarps, as they can flex and move with wind forces rather than acting as large sails that catch and hold wind.
3Loss of energy
If insulation is installed under the roof structure, then heat transfer to living space is reduced, but the roof exterior becomes overly hot and roofing material degrades faster
Solution Approach 1:
The patent introduces an intermediary reflective barrier between the solar radiation and the roof surface. This reflective panel intercepts and reflects solar radiation before it can be absorbed by the roofing material, thereby reducing the temperature of the roof exterior while still providing thermal protection to the living space below.
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
The system reduces solar radiation absorption by up to 90% and can be adapted for different roof angles and seasons, preventing damage and reducing heating costs.
Implementation Method 1
Each of the flags has exterior surfaces that are reflective to solar radiation... The system reduces solar radiation absorption by up to 90%
Data Source
AI summary
A roof reflector system that is used to reflect solar radiation away from a rooftop. The system uses lines of flags that are strung across the rooftop in parallel rows. Each line of flags contains a plurality of flags that are aligned side-by-side. The flags are reflective to solar radiation. A common ribbon joins the flags into a line of flags. The base of each flag is coupled to the ribbon so that the flags hang away from the bottom edge of the ribbon. Brackets are provided that that can be selectively mounted to the roof. Each of the brackets has a connector that receives and retains the ribbon, therein supporting the ribbon at a first elevation above the roof. The length of each of the flags is greater than that first elevation. As a result, the flags touch the roof and fold along the roof, therein shielding the roof from the heat of the sun.