Window Shading Control Using Solar Radiation and Temperature Thresholds

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Solution Overview

Problem

The existing methods for managing room temperature in buildings using solar radiation are inefficient, as they increase the need for fossil or electric energy for cooling in summer periods while reducing the need for heating in winter, leading to suboptimal energy usage.

Innovation Solution

A control device that uses sensors to monitor solar radiation and temperature, adjusting the concealment of openings (such as roller shutters) based on predetermined thresholds and seasonal conditions to optimize energy supply and reduce the need for fossil or electric energy for heating and cooling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If blackout devices are used to block openings, then solar radiation entering the room is reduced, but the need for heating energy in winter increases

Engineering Contradiction:

Improvecooling energy lossVSAvoidheating energy consumption

Core Design Contradiction:

Loss of energyVSUse of energy by moving object

Solution Approach 1:

The blackout device is made dynamically controllable through automated control means that adjust its position based on real-time measurements of solar radiation, temperature, and seasonal conditions. The device transitions from a static blocked state to a dynamic system that can open, close, or partially cover openings according to optimal energy management criteria, resolving the contradiction by adapting to different temporal conditions.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The control system changes the operational parameters of the blackout device based on seasonal variations, time of day, and environmental conditions. By adjusting parameters such as the degree of opening closure, timing of operation, and response thresholds for solar radiation and temperature, the system optimizes energy performance across different conditions rather than maintaining a fixed state.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If blackout devices are controlled based on solar radiation thresholds, then energy optimization is improved, but device complexity increases

Engineering Contradiction:

Improveenergy optimization efficiencyVSAvoidcontrol system complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The control system operates autonomously by continuously measuring solar radiation and temperature conditions, comparing these measurements against predetermined thresholds, and automatically adjusting the blackout device position without human intervention. This self-service capability achieves sophisticated energy optimization while keeping the control logic relatively simple and maintenance-free.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system implements feedback control by continuously monitoring environmental parameters (solar radiation, temperature) and using this information to adjust the blackout device position. The control means receives feedback from sensors and automatically modifies device operation to maintain optimal energy performance, creating a closed-loop system that balances complexity with effectiveness.

Inventive Principle:

Principle #23Feedback

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 solution effectively manages solar radiation to minimize the need for fossil or electric energy for heating and cooling, optimizing energy usage by adjusting the concealment of openings in response to temperature and radiation levels, thereby enhancing energy efficiency.

Implementation Method 1

a solar radiation sensor (102)

Methodology Applied

Scientific EffectSolar radiation detection: Radiation

Implementation Method 2

a temperature sensor (108) placed outside the building

Methodology Applied

Scientific EffectTemperature measurement:

Implementation Method 3

controlling a blackout device for at least one opening to optimize the energy input from solar radiation

Methodology Applied

Scientific EffectSolar radiation blocking: Absorption (EM radiation)

Data Source

PatentEP3045984B1Method and device for controlling at least one device for concealing at least one opening of a room in a building

Publication Date: 2022.03.23 DELTA DORE SA

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AI summary

The invention relates to a method for controlling at least one concealment device (101) of at least one opening (103) of a room (10) of a building in which: - the temperature of the part of the building (106), - a value of the solar radiation (102, 110) is obtained, - the temperature of the part of the building is compared with at least one temperature threshold, - at least one comparison threshold of the radiation is determined from the result of the comparison of the temperature of the room with said at least one threshold, - the value of the solar radiation obtained is compared with at least one threshold for comparison of the determined solar radiation, - the screening device is controlled (101) based on the comparison of the solar radiation (102, 110) with the determined solar radiation comparison threshold.