UHPC Thermal Storage Element Integrated Into Building Structure

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Solution Overview

Problem

Solar thermal energy's modest contribution to heat generation in Germany is hindered by high costs due to complex design and sales structures, with limited potential for cost reduction in existing systems.

Innovation Solution

A solar thermal module integrating a thermal storage element made of ultra-high-strength concrete (UHPC) with a hydraulic block and integrated pumps, allowing for combined functionalities such as heat conversion, storage, building heating, and decentralized drinking water supply, while meeting static building requirements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If conventional solar thermal systems are used with separate components, then system functionality is achieved, but system complexity and installation costs increase

Engineering Contradiction:
Improvesystem complexityVSAvoidinstallation costs
Core Design Contradiction:
Device complexityVSEase of manufacture

Solution Approach 1:

The patent combines the thermal storage element and solar thermal collector into a single integrated module. The collector is positioned directly on the thermal storage element, creating a unified system that eliminates separate installation steps and reduces overall system complexity while maintaining all necessary functionalities.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The integrated module serves multiple functions simultaneously: the thermal storage element provides heat storage capacity, the collector captures solar energy, and the combined structure can be directly installed on building surfaces. This multi-functionality reduces the number of separate components needed and simplifies the overall system.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple separate solar thermal components are installed, then all required functions are achieved, but planning and implementation effort increases

Engineering Contradiction:
Improvefunctional integrationVSAvoidplanning and implementation effort
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

By merging the collector and thermal storage element into one pre-assembled module, the patent eliminates the need for separate planning and installation of individual components. The integrated design allows for streamlined procurement, simplified installation procedures, and reduced on-site assembly time.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If conventional thermal storage elements are used, then heat storage capacity is achieved, but integration into building structures with special static requirements becomes difficult

Engineering Contradiction:
Improveheat storage capacityVSAvoidintegration into building structures
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The thermal storage element is designed to serve dual purposes: providing heat storage capacity while also functioning as a structurally suitable component for integration into various building structures. The element can be adapted to different static requirements, including load-bearing walls and non-load-bearing structures, enhancing its versatility for building integration.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

This approach simplifies the integration process, reduces construction costs, and enhances the solar thermal system's efficiency by combining multiple functions into a self-sufficient module that can be easily integrated into buildings, minimizing individual planning efforts and heat losses.

Implementation Method 1

at least one solar thermal collector

Methodology Applied
Scientific EffectSolar thermal conversion: Solar Energy

Implementation Method 2

thermal storage element having at least one supply line and at least one derivative for a heat transfer medium and a storage mass with a fluid distribution structure

Methodology Applied
Scientific EffectThermal energy storage: Thermal Energy Storage

Implementation Method 3

supply line and at least one derivative for a heat transfer medium

Methodology Applied
Scientific EffectHeat transfer by convection: Convection

Data Source

PatentEP2923155B1Building with integrated thermal storage element, and solar thermal system
Publication Date: 2021.04.28 FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG EV
  • EP2923155B1 patent drawingFigure 1

AI summary

The invention relates to a building into which a thermal storage element with at least one supply line and at least one discharge line for a heat-transfer medium and a storage mass with a fluid-distributing structure is integrated. The storage element is at least partly made of an ultra high-performance concrete, or UHPC. The invention further relates to a solar thermal system containing at least one thermal storage element, which is at least partly made of an ultra high-performance concrete, and at least one solar thermal collector.