Heating Power Reserve Control for Demand-Driven Heat Adjustment
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Solution Overview
Problem
Current hot water heating systems lack efficient means to adjust heating output to actual requirements, often resulting in energetically pointless and expensive oversupply of heat, due to the need for complex measurement efforts and knowledge of radiator valve positions or temperatures.
Innovation Solution
A method and device that determine a radiator power reserve for each controllable radiator in a heating circuit, using easily measurable temperature data to adjust the heating power reserve, allowing for demand-driven heat provision by controlling the flow temperature and mass flow, thereby optimizing heating output and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If demand-driven adjustment of flow temperature or mass flow is implemented using known methods, then heating output is adapted to actual requirements, but knowledge of valve stroke positions or radiator temperatures with characteristic curves is required which increases measurement effort and system complexity
Solution Approach 1:
The patent extracts the essential control function from complex measurement systems by using only the heat cost allocator data that is already present in the system. Instead of requiring additional sensors for valve positions or multiple temperature sensors, the solution takes out and utilizes the existing temperature measurements from the heat cost allocator to calculate the heating power reserve, thereby reducing measurement effort while maintaining demand-driven adjustment capability
Solution Approach 2:
The patent creates a virtual model of radiator performance by calculating the heating power reserve from existing heat cost allocator data. This virtual representation copies the essential information needed for control without requiring physical duplication of sensors or measurement devices, allowing demand-driven adjustment using readily available data
2Adaptability or versatility
If characteristic curves are determined for radiator temperatures to enable demand-based adjustment, then flow temperature or mass flow can be adjusted, but high measurement effort on radiator test benches is required and curves only apply to specific heat cost allocator positions
Solution Approach 1:
The patent makes the system self-sufficient by using the heat cost allocator's existing temperature measurements to calculate the heating power reserve. The system serves itself by utilizing data already collected for billing purposes, eliminating the need for separate measurement campaigns or test bench procedures to determine characteristic curves
Solution Approach 2:
The patent makes the heat cost allocator data serve multiple functions: it continues to provide billing information while simultaneously enabling demand-driven control adjustments. The same temperature measurements used for heat cost calculation are also used to determine the heating power reserve, eliminating the need for position-specific characteristic curves
3Ease of operation
If central heating circulation pump operates at constant speed or fixed differential pressure, then system operation is simple, but heating output is not adjusted to actual requirements leading to energy wastage
Solution Approach 1:
The patent introduces feedback by continuously calculating the heating power reserve based on actual heat cost allocator measurements and using this information to adjust the flow temperature or mass flow. The system monitors the actual heating demand through the heat cost allocator data and feeds this information back to the control system, enabling dynamic adjustment that prevents energy wastage while maintaining operational simplicity
Solution Approach 2:
The patent transforms the static constant-speed pump operation into a dynamic system where the flow temperature or mass flow is continuously adjusted based on the calculated heating power reserve. This dynamic adjustment allows the system to adapt to changing heating demands in real-time, reducing energy wastage while maintaining ease of operation through automated control
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 enables efficient, demand-driven heat provision by optimizing heating power reserves in heating circuits, reducing energy wastage and enhancing heating comfort by adjusting heat output based on actual demands, rather than fixed settings.
Implementation Method 1
the heating output transferred to the building heating system or the individual heating circuits
Implementation Method 2
the mass flow of the heating medium through the radiator itself
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The method involves determining a heating body-heating power reserve for heating bodies (2.1-2.n) of a heating circuit of a heating system (1). Heating circuit-heating power reserves (HLR, BLV) are determined as variable parameters from the heating body-heating power reserve. A reference-heating power reserve is preset as reference value of the reserves (HLR, BLV). A reference or correction parameter (DX) for influencing on the circuit is determined from a deviation of the variable parameter heating circuit-heating power reserves from the reference value reference-heating power reserve. An independent claim is also included for a device for adjusting a heating power reserve in a heating circuit of a heating system.