Perforated Plate Flow Equalization for Large Compressor Coolers

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Solution Overview

Problem

Large compressors with coolers of significant dimensions face issues with uneven flow of the gaseous medium, limiting the cooling capacity and operational efficiency, and increasing pressure loss and vibration stress.

Innovation Solution

The implementation of at least two perforated, plate-like flow equalization elements upstream of the heat exchanger, with one extending at an angle, and optionally divided into segments of different porosity, to ensure a uniform flow through the cooler.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the cooler is designed with large dimensions to handle high compression volumes, then the cooling capacity increases, but uneven flow of the gaseous medium forms within the cooler

Engineering Contradiction:
Improvecooling capacityVSAvoidflow uniformity
Core Design Contradiction:
ProductivityVSStability of the object's composition

Solution Approach 1:

Flow equalization elements are positioned upstream of the heat exchanger to pre-distribute the gaseous medium before it enters the cooling sections. This preliminary flow distribution prevents uneven flow patterns from developing during the cooling process, allowing the cooler to maintain uniform flow throughout its large dimensions while preserving high cooling capacity.

Inventive Principle:
Principle #10Preliminary action

2Device complexity

If the cooler operates without flow equalization, then the structure is simpler, but the cooler cannot be operated optimally due to uneven flow

Engineering Contradiction:
Improvestructural simplicityVSAvoidoperational efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

Perforated plate-like flow equalization elements are used to distribute the gaseous medium uniformly. These porous structures are relatively simple in design—essentially plates with holes—but effectively equalize the flow across all cooling sections, enabling optimal operation without requiring complex flow distribution systems.

Inventive Principle:
Principle #31Porous materials

3Stability of the object's composition

If flow equalization elements are added to the cooler, then flow uniformity and cooling capacity improve, but the device complexity increases

Engineering Contradiction:
Improveflow uniformityVSAvoidnumber of components
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The flow equalization function is divided into multiple discrete perforated plate elements positioned at different locations within the cooler. Each element handles a specific region's flow distribution, and together they achieve comprehensive flow equalization throughout the entire cooler. This segmented approach maintains flow uniformity while keeping individual components simple and manageable.

Inventive Principle:
Principle #1Segmentation

4Productivity

If uneven flow occurs through the cooler, then the cooling capacity is limited, but pressure loss increases

Engineering Contradiction:
Improvecooling capacityVSAvoidpressure loss
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

By pre-distributing the flow uniformly through perforated plates before the gas enters the heat exchanger sections, the system avoids the formation of uneven flow patterns that would cause localized high velocities and excessive pressure losses. This preliminary flow equalization maintains optimal cooling capacity while minimizing energy loss through reduced pressure drop across the cooler.

Inventive Principle:
Principle #10Preliminary 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 solution achieves optimal operating conditions for the cooler, enhancing cooling capacity, reducing pressure loss, and minimizing vibration stress, while improving condensate separation.

Implementation Method 1

at least two perforated, plate-like flow equalization elements are positioned in the housing upstream of the section of the heat exchanger on the flow inlet side

Methodology Applied
Scientific EffectFlow distribution:

Implementation Method 2

a heat exchanger for cooling the compressed gaseous medium being arranged in the housing. Such a cooler has several tubes through which coolant flows and around which the gaseous medium to be cooled flows

Methodology Applied
Scientific EffectHeat transfer: Heat Exchanger

Data Source

PatentEP2757340B1Cooler
Publication Date: 2017.06.14 MAN ENERGY SOLUTION SE
  • EP2757340B1 patent drawingFigure 1~2
  • EP2757340B1 patent drawingFigure 3~4
  • EP2757340B1 patent drawingFigure 5

AI summary

The radiator (10) has a heat exchanger (12) which is positioned in housing (11) to supply coolant to a gaseous medium flowed around pipes. An inlet (13) is provided to supply gaseous medium into housing through a flow enter side portion (14) of heat exchanger. An outlet (15) is provided to discharge gaseous medium from housing through a flow withdraw side portion (16) of heat exchanger. Perforated plate-like flow comparison moderation elements (18,19) are positioned in a flow direction of gaseous medium seen from upstream of flow enter side portion.