Modular Condenser Coil Design for Uniform Air Distribution in Chillers
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Solution Overview
Problem
Conventional air conditioning systems with lateral V-shaped condenser coil arrangements suffer from uneven air distribution, variable face velocity, and inefficiencies due to multiple fans and non-uniform heat transfer, leading to issues like fan-to-fan short circuiting and water drainage problems.
Innovation Solution
A modular condenser coil arrangement with a housing featuring a heat exchanger assembly and fan assembly in a draw-through configuration, where each condenser module has a constant cross-section and multiple fans aligned with heat exchanger coils, reducing air flow turns and enhancing uniformity, and allowing for improved heat transfer and reduced fan power requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a lateral V-shaped coil arrangement is used, then the condenser can accommodate large capacity cooling, but air distribution becomes uneven and face velocity becomes variable across the coil
Solution Approach 1:
The condenser is divided into multiple independent modules, each with its own fan and coil assembly. This segmentation allows each module to operate independently with uniform air distribution, while the overall system achieves large cooling capacity through parallel operation of multiple modules.
Solution Approach 2:
The coil arrangement transitions from a lateral V-shaped configuration to a longitudinal serpentine configuration that extends along the length of the housing. This dimensional change allows air to flow uniformly through the coil while maintaining large heat exchange surface area for high cooling capacity.
2Productivity
If multiple fans are located on top of the condenser housing for each unit, then large capacity cooling is achieved, but fan-to-fan short circuiting occurs and system efficiency decreases
Solution Approach 1:
Each condenser module has a single fan positioned at one end, creating independent airflow paths. This eliminates fan-to-fan short circuiting where multiple fans on the same unit would interfere with each other's airflow, reducing energy loss while maintaining the cooling capacity needed for large applications.
Solution Approach 2:
Instead of placing multiple fans on top of the housing blowing air downward, the design positions fans at the ends drawing air through the longitudinal coil in a serpentine pattern. This inverted approach eliminates the short circuiting problem inherent in the conventional multiple-fan-on-top configuration.
3Volume of moving object
If a lateral V-shaped coil arrangement is used, then the condenser structure is compact, but water drainage problems and heat pump application issues arise
Solution Approach 1:
The coil configuration changes from lateral V-shaped to longitudinal serpentine, extending along the length of the housing rather than across the width. This dimensional reorientation provides proper slope for water drainage along the longitudinal axis while maintaining compact overall dimensions, and enables proper refrigerant flow for heat pump applications.
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 configuration improves air distribution and heat transfer efficiency, reduces system losses, and minimizes corrosion risks, resulting in enhanced cooling performance and reduced fan power consumption.
Implementation Method 1
a heat exchanger assembly including at least one heat exchanger coil
Implementation Method 2
a fan assembly including at least one fan generally aligned with a single heat exchanger coil
Implementation Method 3
a fan assembly including at least one fan generally aligned with a single heat exchanger coil in the heat exchanger assembly
Data Source
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AI summary
A condenser module configured for use in a condenser is provided including a housing having a first longitudinal side that defines a first air inlet and an opposing second longitudinal side that defines a second air inlet. A heat exchanger assembly is positioned within the housing. The heat exchanger assembly includes at least one heat exchanger coil. A cross-section of the heat exchanger assembly is generally constant between a front side of the housing and an opposite back side of the housing. At least one of the front surface and the back surface is configured to abut an adjacent contact module. A fan assembly includes at least one fan generally aligned with a single heat exchanger coil in the heat exchanger assembly.