Method for heating a fluid in a storage device in a heating system and heating system for same

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Solution Overview

Problem

Heating systems face inefficiencies and comfort trade-offs when heating water, particularly in well-insulated homes, where maximizing output is not always optimal for energy efficiency.

Innovation Solution

A method that uses a regulation and control unit to adjust the heat source's power based on sensor measurements, switching to maximum power when the water temperature drops below a threshold and reducing power once it reaches a setpoint, maintaining comfort while enhancing efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the heat source operates at maximum power to quickly heat the storage tank, then comfort is improved, but energy efficiency deteriorates

Engineering Contradiction:
ImprovecomfortVSAvoidenergy efficiency
Core Design Contradiction:
Ease of operationVSLoss of energy

Solution Approach 1:

The heat source power output is dynamically adjusted based on the measured fluid temperature. The control unit continuously monitors the temperature and modulates the power between maximum and reduced levels, transitioning from static maximum power operation to dynamic adaptive power control that responds to real-time temperature conditions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

A sensor measures the fluid temperature and feeds this information back to the control unit, which then adjusts the heat source power accordingly. This closed-loop feedback mechanism enables the system to automatically transition between maximum power mode (when temperature is below threshold) and reduced power mode (when temperature is at or above threshold), resolving the contradiction between comfort and energy efficiency.

Inventive Principle:
Principle #23Feedback

2Speed

If the heat source operates at maximum power, then the heating speed is improved, but the environmental impact worsens

Engineering Contradiction:
Improveheating speedVSAvoidenvironmental impact
Core Design Contradiction:
SpeedVSObject-affected harmful factors

Solution Approach 1:

The system dynamically adjusts power output based on actual heating needs rather than operating continuously at maximum power. This reduces unnecessary energy consumption and associated environmental impact while maintaining adequate heating speed when required, by switching between maximum power (fast heating when needed) and reduced power (sustained heating when sufficient).

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The temperature sensor and control unit create a feedback loop that prevents excessive heating. When the fluid temperature reaches the threshold, the system automatically reduces power, avoiding wasted energy and reducing environmental impact while still achieving the necessary heating speed when the temperature falls below the threshold.

Inventive Principle:
Principle #23Feedback

3Loss of energy

If the heat source operates at reduced power in the efficient power range, then energy efficiency is improved, but comfort may deteriorate

Engineering Contradiction:
Improveenergy efficiencyVSAvoidcomfort
Core Design Contradiction:
Loss of energyVSEase of operation

Solution Approach 1:

The system dynamically switches between reduced power mode (for energy efficiency) and maximum power mode (for comfort) based on real-time temperature measurements. This dynamic adjustment ensures that reduced power operation does not permanently compromise comfort, as the system can quickly switch to maximum power when the temperature drops below the threshold.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system employs periodic switching between power levels rather than continuous operation at one level. It alternates between reduced power (efficient operation when temperature is sufficient) and maximum power (comfort assurance when temperature drops), creating a periodic action pattern that balances energy efficiency and comfort over time.

Inventive Principle:
Principle #19Periodic action

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 balances comfort and efficiency by quickly reheating water when necessary and operating at reduced power when sufficient, improving the environmental compatibility and performance of heating systems.

Implementation Method 1

at least one heat source (14) for transferring thermal energy to the fluid

Methodology Applied
Scientific EffectThermal energy transfer: Conduction (thermal)

Data Source

PatentEP3023709B1Method for heating a fluid in a storage device in a heating system and heating system for same
Publication Date: 2019.05.08 ROBERT BOSCH GMBH
  • EP3023709B1 patent drawingFigure 1~2
  • EP3023709B1 patent drawingFigure 3
  • EP3023709B1 patent drawingFigure 4~5

AI summary

The invention relates to a method for heating a fluid in a reservoir (16), in particular service water, in a heating system (10), having at least one heat source (14) for transferring thermal energy to the fluid. It is suggested that the heat source be operated at reduced power so that the fluid in the reservoir (16) is heated in an efficient range. The invention also relates to a heating system which is operated using the method.