Compressor Coolant Mixing Control for Stable Outlet Temperature
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Variable-speed compressors experience unstable and inefficient operation due to significant variability in compressor outlet temperature, which is not effectively managed by traditional coolant temperature control methods.
Innovation Solution
A compressor system with a temperature sensor and a control valve that adjusts the ratio of cooled coolant to un-cooled coolant flow in response to the discharge temperature of the compressed fluid, ensuring a consistent compressor outlet temperature by varying the flow rates of cooled and un-cooled coolant.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional coolant temperature control methods are used in variable-speed compressors, then the system structure remains simple, but the compressor outlet temperature becomes unstable and operation becomes inefficient
Solution Approach 1:
The patent implements a feedback control system where a sensor continuously monitors the compressor outlet temperature and sends signals to a control valve. The control valve adjusts the coolant flow rate based on the temperature feedback, creating a closed-loop system that automatically maintains stable outlet temperature despite variable compressor speed operations.
Solution Approach 2:
The control valve is designed to dynamically adjust the coolant flow rate in real-time based on changing operating conditions. This dynamic adjustment capability allows the system to adapt to variable-speed operations, maintaining optimal cooling effectiveness across different compressor speeds and loads.
2Productivity
If variable-speed operation is implemented, then compressor productivity increases, but outlet temperature variability increases resulting in unstable operation
Solution Approach 1:
The feedback control mechanism continuously monitors outlet temperature and adjusts coolant flow accordingly, enabling the compressor to maintain stable operation across the full range of variable speeds. This allows productivity benefits of variable-speed operation to be realized without sacrificing temperature stability.
Solution Approach 2:
The system changes the coolant flow rate parameter in response to varying compressor speed and load conditions. By dynamically adjusting this cooling parameter, the system maintains optimal temperature control across different operating points, enabling both high productivity and stable operation.
3Stability of the object's composition
If coolant flow rate is increased to maintain temperature, then temperature control improves, but energy consumption increases
Solution Approach 1:
The control valve dynamically adjusts coolant flow rate to match actual cooling requirements based on real-time temperature conditions. This prevents excessive coolant circulation when less cooling is needed, reducing energy consumption while maintaining temperature stability through adaptive flow control.
Solution Approach 2:
The system optimizes the coolant flow rate parameter by adjusting it according to actual thermal conditions and compressor load. This parameter optimization ensures sufficient cooling is provided only when needed, minimizing energy consumption of the coolant circulation system while maintaining stable operation.
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 solution stabilizes the compressor operation by maintaining a predetermined temperature of the compressed fluid discharge, enhancing efficiency and reducing temperature-related inefficiencies.
Implementation Method 1
A sensor is positioned to measure a discharge temperature of the compressed fluid
Implementation Method 2
A cooler is positioned to receive a first flow of coolant from the coolant source and discharge a flow of cooled coolant
Implementation Method 3
The valve is configured to receive the flow of cooled coolant and a second flow of coolant from the coolant source and to discharge a coolant flow to the compressor
Data Source
AI summary
A compressor discharges a flow of compressed fluid at a predetermined temperature. The compressor includes a sensor positioned to measure a first temperature indicative of the temperature of the compressed fluid, a coolant source, a cooler positioned to receive a first flow of coolant from the coolant source and discharge a flow of cooled coolant, and a valve positioned to receive the flow of cooled coolant and a second flow of coolant from the coolant source. The valve is configured to discharge a coolant flow to the compressor and the coolant flow has a ratio of cooled coolant to second flow of coolant that is variable in response to the first temperature.