Dynamic Reference Point Selection for Radiator Heat Cost Allocation
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Solution Overview
Problem
Current heat quantity determination methods in heating systems with radiators, especially those using electronic heat cost allocators, underestimate heat emissions during partial load operations due to fixed reference points and constant thermal coupling assumptions, leading to inaccurate billing and energy measurement.
Innovation Solution
The method involves using a combination of temperature measurements from electronic heat cost allocators and operation-dependent variables from local supply pumps to determine a volume flow-dependent representative radiator temperature, correcting for partial load conditions and improving the accuracy of heat quantity calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed reference point on the radiator surface is used for temperature measurement, then the device complexity is reduced and manufacturing is simplified, but the measurement precision deteriorates during partial load operations
Solution Approach 1:
The patent applies the dynamics principle by making the reference point selection dynamic rather than fixed. The system automatically selects different reference points on the radiator surface based on the detected operating state (full load vs. partial load). During partial load operations, the reference point is shifted to areas where heat emission is more representative, whereas during full load operations, the original fixed reference point suffices. This dynamic adaptation resolves the contradiction by maintaining measurement precision across varying operating conditions without increasing device complexity.
Solution Approach 2:
The patent employs parameter changes by modifying the spatial coordinates of the reference point based on operating parameters. The system changes the position parameters (x, y coordinates) of the temperature measurement reference point according to the detected load condition. This allows the measurement system to adapt to different thermal distribution patterns on the radiator surface, maintaining accuracy during partial load while keeping the device simple and easy to manufacture.
2Measurement precision
If the reference point is shifted upwards to improve partial load measurement, then the measurement precision improves, but the device complexity increases due to continuous position adjustment
Solution Approach 1:
The system implements dynamics by making the reference point position adaptive based on operating conditions. Instead of continuous physical adjustment mechanisms, the system dynamically selects from predefined reference point positions stored in a database, with the selection criterion being the detected operating state (full load or partial load). This approach achieves the benefit of improved measurement precision during partial load while avoiding the complexity of continuous mechanical adjustment systems.
Solution Approach 2:
The patent applies copying by creating a database of pre-calculated reference point positions that represent different operating states. Rather than implementing complex real-time calculation and continuous adjustment mechanisms, the system copies the appropriate reference point coordinates from the database based on the detected operating condition. This significantly reduces device complexity while maintaining measurement precision.
3Device complexity
If traditional heat cost allocators with fixed reference points are used, then the device complexity remains low and manufacturing is simple, but the heat quantity determination accuracy deteriorates during partial load operations
Solution Approach 1:
The patent enhances the traditional heat cost allocator by introducing dynamic reference point selection based on detected operating states. The system automatically adapts the measurement reference point position according to whether the radiator is operating at full load or partial load, thereby maintaining high heat quantity determination accuracy across all operating conditions while keeping the overall device complexity manageable through software-based adaptation rather than complex hardware modifications.
Solution Approach 2:
The system uses copying by storing pre-determined reference point positions in a database and selecting the appropriate copy based on the detected operating state. This approach allows the system to achieve high measurement accuracy during partial load operations by copying the correct reference point coordinates without requiring complex real-time calculations or continuous physical adjustments, thus balancing accuracy with device simplicity.
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 allows for a more precise determination of heat quantity distribution in heating systems with local supply pumps, reducing underestimation errors and providing a more realistic representation of heat emissions, especially during partial load operations.
Implementation Method 1
a measured value from a temperature sensor on the radiator side in the electronic heat cost allocator
Implementation Method 2
a local supply pump for supplying the radiator with the heating medium
Implementation Method 3
the heat transfer within the heating system and the heat dissipation of the radiators are hydraulically optimized
Data Source
Figure 1~2
AI summary
The method involves determining representative heating body temperature, and calculating display or consumption value of an electronic heating cost distributor (12). A measuring value of a heating body-sided temperature sensor at the electronic heating cost distributor and a value of an operation-dependent variable of a local supply pump (14) are used as an input parameter. A relatively dispensed heating volume of a heating body (10) of a heating system is determined under the usage of representative heating body temperature. An independent claim is also included for a device arrangement in a heating system for performing a method for determining heat volume distribution in a heating system.