Building system for reducing energy consumption
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Solution Overview
Problem
Existing building insulation technologies fail to harmonize temperature, radiant heat, and airflow effectively, leading to rapid indoor temperature changes and increased energy consumption, particularly in regions with distinct seasons.
Innovation Solution
A building system incorporating a circulation pipe with a heating medium and a PCM-filled exterior wall layer to absorb solar energy, minimizing heat penetration and storing thermal energy for later use, reducing both cooling and heating energy demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If building insulation is used to block outdoor air, then indoor temperature can be maintained at a comfortable condition, but radiant heat and airflow still cause sensory temperature differences that affect comfort
Solution Approach 1:
The patent incorporates phase change materials (PCM) into the exterior wall layer that undergo phase transitions (melting and freezing) to absorb and release latent heat. This directly addresses the radiant heat issue by absorbing solar radiant energy during phase change, maintaining wall surface temperature and reducing thermal radiation into the building interior, thereby improving thermal comfort beyond simple insulation.
Solution Approach 2:
The patent introduces a circulation pipe system with heating medium as an intermediary between the exterior wall and building interior. The heating medium absorbs heat from the exterior wall through conduction and convection, then transports it away from the building, preventing heat penetration while allowing the insulation to function. This intermediary system addresses both radiant heat and airflow issues.
2Object-affected harmful factors
If building materials are used to maintain pleasant indoor environment, then thermal comfort is improved, but energy consumption rapidly increases in summer season due to rapid temperature changes through building walls
Solution Approach 1:
The patent uses phase change materials that preliminarily absorb solar radiant heat and thermal energy from the exterior wall during the day before this heat can penetrate into the building interior. The PCM stores this energy as latent heat during phase transition, preventing rapid temperature changes in the building and reducing the need for cooling energy consumption.
Solution Approach 2:
The patent changes the thermal parameters of the exterior wall by incorporating PCM with specific phase change temperatures and latent heat values. This transforms the wall's thermal behavior from simple conduction to phase-change-based thermal regulation, enabling the wall to absorb large amounts of heat during phase transition while maintaining relatively stable temperature, thereby reducing cooling energy demand.
3Use of energy by moving object
If a circulation pipe with heating medium is installed to absorb solar heat, then cooling energy consumption is reduced, but device complexity increases
Solution Approach 1:
The circulation pipe system is designed to serve multiple functions: absorbing solar radiant heat from the exterior wall, transporting thermal energy away from the building to reduce cooling load, and potentially storing thermal energy for later use. By integrating these functions into a single system, the patent reduces overall device complexity while achieving energy savings.
4Use of energy by moving object
If thermal energy storage is connected to circulation pipe to store absorbed heat, then heating energy consumption is reduced, but device complexity increases
Solution Approach 1:
The patent merges the cooling function (circulation pipe absorbing heat in summer) with the heating function (thermal energy storage releasing heat in winter) into an integrated system. The thermal energy storage unit is connected to the circulation pipe, allowing it to receive and store thermal energy during cooling season and release it during heating season. This combination reduces overall device complexity compared to having separate cooling and heating systems.
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
Effectively reduces cooling energy consumption by blocking heat penetration and storing solar energy for later use, maintaining a pleasant indoor environment and minimizing heating energy needs.
Implementation Method 1
a circulation pipe which is disposed inside the exterior wall layer and through which a heating medium for absorbing heat caused by solar radiant energy applied to the exterior wall layer flows
Implementation Method 2
an exterior wall layer in which a phase change material (PCM) is accommodated is provided in an exterior wall of a building
Implementation Method 3
A PCM may be accommodated in the exterior wall layer and the heating medium may absorb heat stored in the PCM through heat exchange
Implementation Method 4
a thermal energy storage connected to the circulation pipe and configured to store heat transmitted by the heating medium
Data Source
AI summary
Disclosed is a building system for reducing energy consumption. The building system includes an exterior wall layer disposed on an exterior wall of building walls, a circulation pipe disposed inside the exterior wall layer and through which a heating medium for absorbing heat caused by solar radiant energy applied to the exterior wall layer flows, and a thermal energy storage connected to the circulation pipe and configured to store the heat transmitted by the heating medium.