Centrifugal Compressor Capillary Tubes Isothermal Gas Compression

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Solution Overview

Problem

Existing gas compressors are inefficient due to the inability to effectively dissipate heat during the compression process, leading to increased energy consumption and wasted work, as most operate using adiabatic or semi-adiabatic compression cycles which do not allow for isothermal compression.

Innovation Solution

The method employs a centrifugal gas compressor with capillary compression tubes that enforce unidirectional emulsion flow through mechanical checking mechanisms, dynamic enforcement of flow direction, and tapered diameters to maintain full contact between bubbles and tube walls, restricting backflow and promoting distal flow, thereby achieving isothermal compression.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If rapid compression is used to meet demand, then compression speed is improved, but heat dissipation capability deteriorates

Engineering Contradiction:
Improvecompression speedVSAvoidheat dissipation capability
Core Design Contradiction:
SpeedVSTemperature

Solution Approach 1:

The compression process is divided into multiple stages through sequential compression chambers. Gas undergoes compression in stages rather than a single rapid compression, allowing heat to dissipate between stages while maintaining overall compression speed and meeting demand requirements.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The system maintains continuous compression operation through multiple sequential chambers. While one chamber is compressing gas, other chambers are ready for the next cycle, ensuring continuous productive action without requiring any single chamber to perform all compression rapidly, thus enabling heat dissipation.

Inventive Principle:
Principle #20Continuity of useful action

2Speed

If adiabatic compression is used to compress gas rapidly, then compression speed is improved, but energy consumption increases

Engineering Contradiction:
Improvecompression speedVSAvoidenergy consumption
Core Design Contradiction:
SpeedVSUse of energy by moving object

Solution Approach 1:

The compression process is segmented into multiple stages with intermediate heat dissipation opportunities. This allows the system to achieve rapid overall compression speed while consuming less energy per stage, as heat can be removed between stages rather than accumulating as in single-stage adiabatic compression.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple sequential compression chambers enable continuous compression operation where each chamber performs a portion of the total compression work. This distributed approach maintains high overall compression speed while reducing energy consumption per chamber, as heat can be dissipated during the transitions between compression stages.

Inventive Principle:
Principle #20Continuity of useful action

3Use of energy by moving object

If isothermal compression is implemented to reduce energy consumption, then energy efficiency is improved, but compression time increases

Engineering Contradiction:
Improveenergy efficiencyVSAvoidcompression time
Core Design Contradiction:
Use of energy by moving objectVSLoss of time

Solution Approach 1:

The compression process is divided into multiple rapid stages with brief intervals for heat dissipation. Each stage is short enough to minimize time loss, but collectively they achieve the gradual, heat-managed compression characteristic of isothermal processes, thereby reducing energy consumption without excessive time penalty.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple sequential chambers enable continuous compression operation where gas moves through chambers in a steady stream. This continuity ensures that compression is always occurring (minimizing idle time) while the multi-stage architecture allows sufficient time between stages for heat dissipation, achieving energy efficiency without significant time loss.

Inventive Principle:
Principle #20Continuity of useful action

4Productivity

If flow restrictions are applied to enforce unidirectional flow, then compression efficiency is improved, but device complexity increases

Engineering Contradiction:
Improvecompression efficiencyVSAvoiddevice complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The compression system is segmented into multiple sequential chambers with simple unidirectional flow paths. Each chamber uses basic flow control mechanisms rather than complex restrictions, maintaining simplicity while the segmented architecture collectively enforces unidirectional flow throughout the entire compression process, improving efficiency.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Multiple sequential chambers with simple flow control mechanisms maintain continuous unidirectional flow through the system. The simplicity of individual chamber design is preserved while the sequential arrangement naturally enforces unidirectional flow patterns, improving compression efficiency without requiring complex flow restriction devices in any single chamber.

Inventive Principle:
Principle #20Continuity of useful action

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 approach significantly enhances the productivity and efficiency of gas compression by reducing energy requirements, allowing for twice the amount of compressed gas to be produced for the same cost, as it effectively manages heat dissipation and maintains unidirectional flow, reducing energy waste.

Implementation Method 1

Centrifugal force acts on gas bubbles entrained between liquid slugs moving radially outward (distally) through the capillary compression tubes

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Implementation Method 2

Flow is restricted in the proximal direction, limiting substantially radially inboard flow through the capillary passages

Methodology Applied
Scientific EffectFlow restriction:

Implementation Method 3

The method employs a centrifugal gas compressor with capillary compression tubes that enforce unidirectional emulsion flow

Methodology Applied
Scientific EffectEmulsion: Emulsion

Data Source

PatentUS9919243B2Method and system of compressing gas with flow restrictions
Publication Date: 2018.03.20 CARNOT COMPRESSION INC
  • US9919243B2 patent drawing
  • US9919243B2 patent drawing
  • US9919243B2 patent drawing

AI summary

The gas compression method/system restricts flow of emulsified liquid-gas mixture through many substantially radial capillary tube-passages in a rotating disk by either one-way valves, narrowing the passages, hydraulic impedance and/or reinforcement of coriolis forces in terminal end tail segments of the capillary passages. Compressed gas is released from peripherally collected compressed gas-liquid emulsion (beyond the terminal ends of the tubes) in a arcuate peripheral disc space when the compressed gas bubbles emerge from the peripherally collected emulsion. A compressed gas drain draws off gas from the peripheral space. Liquid drain draws off liquid from the space. In different embodiments, radial outboard flow through the capillaries is effected by various one-way valves which may be a single valve in the passage or multiple valves. Coriolis force in tail segments is enhanced by angular displacement in the direction of rotation. Valves may be used in combination with such tail-end segments.