Method for regulating a circulation pump, circulation pump, and heating system
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Solution Overview
Problem
Conventional circulation pumps in heating systems operate with higher control curves than necessary, leading to excessive energy consumption due to inefficient speed control, which does not accurately match the system's current heating requirements.
Innovation Solution
A method that adjusts the pump speed based on the temperature profile of the heating medium, using recorded temperature data to determine the average cooling curve and adjust speed accordingly, ensuring the pump operates at optimal levels to match the system's heating requirements, thereby reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If proportional pressure control is used to adjust pump speed based on hydraulic resistance, then the pump adapts to system conditions, but the control curves are significantly higher than the system characteristic curve causing excessive energy consumption
Solution Approach 1:
The system uses feedback from temperature sensors to monitor the actual heating demand and adjusts the pump speed accordingly. The controller compares the actual temperature profile with the desired profile and modifies the pump operation to minimize energy consumption while maintaining heating effectiveness.
Solution Approach 2:
The pump speed is dynamically adjusted based on real-time temperature measurements and heating demand assessment. Instead of using fixed control curves, the system continuously adapts the pump characteristics to match the actual system requirements, allowing operation closer to the minimum system characteristic curve.
2Productivity
If the pump operates at higher speeds to ensure sufficient heat transfer, then heating demand is met, but unnecessary energy is consumed when heating demand is low
Solution Approach 1:
The system applies partial action by operating the pump at reduced speeds when full heating capacity is not required. By assessing the actual heating demand through temperature monitoring, the pump can operate at minimal necessary speeds during periods of low demand, avoiding excessive energy consumption while still meeting heating requirements when needed.
Solution Approach 2:
The pump operating parameters (speed, flow rate) are changed based on assessed heating demand. The system dynamically modifies these parameters to match actual system needs, reducing speed and flow when heating demand is low and increasing them when heating demand rises, thereby optimizing the balance between heat transfer efficiency and energy consumption.
3Use of energy by moving object
If the pump speed is reduced to approximate the minimum system characteristic curve, then energy consumption decreases, but heat transfer efficiency may be compromised
Solution Approach 1:
Temperature sensors provide continuous feedback on the thermal state of the heating system. This feedback allows the controller to assess whether reduced pump speeds are sufficient to meet heating demand, ensuring that heat transfer efficiency is maintained while minimizing energy consumption. The system can increase speed if temperature deviations indicate insufficient heat transfer.
Data Source
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AI summary
The invention relates to a method for regulating a circulation pump for a heating system. The pump controller records the temperature curve of the medium temperature for a specified duration and adapts the pump speed during the circulation operation while taking into consideration the recorded temperature curve.