Isothermal Compression Using Incompressible Liquid Pistons
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current compressor technologies fail to achieve efficient isothermal compression, as perfect isothermal compression is not attainable without infinite compression stages and inter-coolers, leading to energy inefficiencies and heat loss.
Innovation Solution
A system and method for isothermal compression that integrates a heat exchanger with a heat removal mechanism, using incompressible liquids as pistons and external coolants to maintain the working fluid's temperature close to the coolant's temperature, enhancing compression efficiency through fractal channel configurations and internal/external heat transfer structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional compression methods are used, then compression speed is improved, but temperature increase and energy loss worsen
Solution Approach 1:
The patent merges the compression chamber with heat exchanger components, integrating the cooling function directly into the compression process. The compression chamber walls serve dual purposes as structural boundaries and heat transfer surfaces, allowing simultaneous compression and heat removal without requiring separate cooling stages.
Solution Approach 2:
The patent implements preliminary cooling by maintaining a coolant flow ready to absorb heat as compression begins. The heat exchanger is pre-positioned and pre-filled with coolant, enabling immediate heat removal from the working fluid as compression starts, preventing excessive temperature rise before it occurs.
2Temperature
If heat exchanger is integrated with compression chamber, then isothermal compression is improved, but device complexity worsens
Solution Approach 1:
The compression chamber is designed to perform multiple functions simultaneously: it serves as the compression volume, the heat transfer surface, and the structural housing. The same chamber walls that contain the working fluid also serve as the heat exchanger surfaces through which coolant flows, eliminating the need for separate heat exchanger components.
Solution Approach 2:
The patent embeds coolant flow channels directly within the compression chamber structure. The heat transfer pathways are nested within the chamber walls, allowing the cooling function to be contained within the compression component itself rather than requiring external heat exchanger assemblies.
3Productivity
If multiple compression stages are used, then compression efficiency is improved, but device complexity and cost worsen
Solution Approach 1:
The patent implements continuous heat removal throughout the entire compression process rather than using discrete inter-cooling stages. The coolant flows continuously through the compression chamber walls, maintaining thermal contact with the working fluid throughout compression, which eliminates the need for multiple compression stages and inter-coolers.
Solution Approach 2:
The patent divides the compression chamber into multiple zones with different heat transfer characteristics, allowing optimized heat removal at different compression stages. The chamber may be segmented into regions with varying coolant flow rates or heat transfer surface areas to match the thermal demands at different compression pressures.
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
The system achieves highly efficient isothermal compression by maintaining the working fluid's temperature close to the coolant's, reducing energy consumption and improving compression efficiency compared to traditional methods.
Implementation Method 1
a cooling medium circulating in a thermal coupling with the compression unit(s)
Implementation Method 2
cooling medium circulating... to absorb the heat generated as the result of the compression process
Implementation Method 3
raising, in a controllable manner, a level of the incompressible liquid medium within the compression unit(s) to compress the working fluid medium to a predetermined pressure value
Data Source
AI summary
The disclosed systems and methods are related to a positive displacement compression for use in various applications including gas processing, air conditioning, refrigeration, etc., to produce an isothermal compression to enhance the compression efficiency. The heat exchange enhanced compression is conducted by the use of cylinders partially filled with incompressible fluid (e.g., oil) acting as a piston compressing working fluid (e.g., CO2). The isothermal compression is contemplated in various modifications. A variety of heat exchange (cooling) techniques may be arranged either within the compression chamber or the compression process may be embedded in the heat exchanger to cool down the working fluid (for example, CO2).