Heat exchanging unit, a heat exchanging system and a method of determining failure of a control valve therein
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing heat exchange systems lack an automatic failure checking function for control valves, making it difficult to detect valve failures, which can lead to user discomfort and performance degradation.
Innovation Solution
Incorporating a first and second temperature sensor within the heat exchange unit, connected to the main flow path through a control valve, and a processor to determine valve failure by comparing temperature differences, allowing for automatic detection of valve failure based on predetermined conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automatic failure checking function is added to detect control valve failures, then reliability of the system is improved, but device complexity increases due to additional temperature sensors and processing logic
Solution Approach 1:
The temperature sensors and processing unit are designed to serve multiple functions: they not only detect control valve failures but also monitor heat exchange performance and system operating conditions. This multi-functionality approach allows the additional components to contribute to multiple system objectives, justifying the increased device complexity by delivering proportional or greater reliability improvements across different system aspects.
Solution Approach 2:
The system performs self-diagnosis by automatically monitoring its own operational parameters through the integrated temperature sensors and processing logic. The control valve failure detection is achieved through the system's own operational data without requiring external inspection or additional complex diagnostic equipment, allowing the system to serve its own monitoring needs and reducing the relative complexity burden.
2Ease of operation
If temperature sensors and processing logic are integrated into existing heat exchange units, then ease of operation is improved through automatic detection, but manufacturing complexity increases
Solution Approach 1:
The failure detection system is segmented into modular components: temperature sensors positioned at specific locations, a processing unit with dedicated failure detection logic, and integration with existing control systems. This segmentation allows each component to be manufactured and tested independently before assembly, simplifying the overall manufacturing process despite the increased system complexity. The modular approach enables parallel production and quality control.
Solution Approach 2:
The temperature sensors and processing logic are merged with the existing heat exchange unit control systems rather than being implemented as separate standalone systems. This integration combines the failure detection functionality with the existing manufacturing infrastructure, reducing the need for separate assembly lines and quality control processes. The merged approach allows existing manufacturing capabilities to be leveraged, minimizing the increase in manufacturing complexity.
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
Enables the automatic and timely detection of control valve failures, preventing performance degradation and user discomfort by integrating minimal additional components into the existing system.
Implementation Method 1
a second flow path at least partially located within the first flow path to exchange heat with the first flow path
Data Source
AI summary
A heat exchange unit, a heat exchange system, and a method of determining the failure of a control valve in the heat exchange system. The heat exchange unit includes: a first flow path; and a second flow path at least partially located within the first flow path to exchange heat with the first flow path, one of the inlet and the outlet of the second flow path being connected to the main flow path of the external heat exchange system through a control valve; a first temperature sensor at the inlet of the first flow path to sense a first temperature T1; a second temperature sensor at the outlet of the first flow path or the second flow path within the first flow path to sense a second temperature T2; and a processor configured to determine whether the control valve fails.