Receiver Mass Monitoring for Refrigerant Leak Detection
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Solution Overview
Problem
Existing cooling systems in data centers lack the ability to detect refrigerant leaks, which can lead to inefficiencies and equipment damage due to undetected refrigerant loss.
Innovation Solution
A method and system that establish a baseline measurement of refrigerant mass using sensors and controllers, monitoring the mass over time, and triggering an alarm when a loss is detected, allowing for timely intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If refrigerant leak detection is implemented using baseline comparison methods, then reliability of cooling system operation is improved, but device complexity increases due to additional sensors and control logic
Solution Approach 1:
The system continuously monitors refrigerant mass in the receiver and compares it against a pre-established baseline, creating a closed-loop feedback mechanism that automatically detects deviations indicating leaks, thereby improving reliability through continuous verification
Solution Approach 2:
A baseline refrigerant mass measurement is established during system commissioning or after refrigerant charging, before normal operation begins. This preliminary action creates a reference point that enables future leak detection without requiring complex real-time analysis during operation
2Loss of time
If continuous refrigerant mass monitoring is performed, then loss of refrigerant is detected earlier, but use of energy increases due to continuous sensor operation and data processing
Solution Approach 1:
The system performs refrigerant mass monitoring at periodic intervals rather than truly continuously, comparing measurements at discrete time points against the baseline. This periodic approach enables timely leak detection while reducing energy consumption compared to continuous high-frequency monitoring
Solution Approach 2:
The monitoring system uses the existing refrigerant mass sensor and controller infrastructure already present in modern cooling systems, leveraging existing components for dual purposes (original control functions plus leak detection) rather than adding entirely new dedicated monitoring hardware, thereby minimizing additional energy requirements
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 early detection of refrigerant leaks, preventing equipment damage and improving cooling system efficiency by alerting operators to refrigerant loss.
Implementation Method 1
a sensor configured to detect a level of refrigerant within the receiver
Data Source
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AI summary
A method of detecting loss of refrigerant within a cooling system of the type having a condenser, a refrigerant receiver in fluid communication with the condenser, a sensor configured to detect a level of refrigerant within the receiver, an evaporator in fluid communication with the receiver, and a pump or compressor in fluid communication with the evaporator and the condenser, includes establishing a baseline measurement of refrigerant mass contained in the receiver with the sensor during certain power loads applied to the cooling system, monitoring a mass of refrigerant in the receiver with the sensor at a certain power load applied to the cooling system, and identifying whether the monitored mass of refrigerant is less than the baseline measurement of refrigerant mass over a predetermined period of time. Systems for detecting loss of refrigerant are further disclosed.