Vertical Modular Air-Cooled Condenser for Lower Turbine Back Pressure
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Solution Overview
Problem
Current air-cooled condenser towers face challenges in uniform steam distribution, leading to inefficiencies in heat transfer and increased turbine back pressure, and are labor-intensive and costly to assemble due to non-uniform ducting and large surface area requirements.
Innovation Solution
A modular mechanical draft cooling tower design featuring a vertical arrangement of condenser bundles with steam manifolds and condensate headers, allowing for efficient steam distribution and reduced pressure drop, along with pre-assembled modules for reduced on-site assembly time and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a large surface area is provided to dissipate thermal energy, then heat dissipation efficiency is improved, but steam side pressure drop increases thus increasing turbine back pressure and reducing power plant efficiency
Solution Approach 1:
The condenser is divided into multiple independent bundles arranged in parallel, each bundle handling a portion of the steam flow. This segmentation allows the total heat dissipation surface area to be distributed across multiple smaller units, maintaining efficient heat transfer while reducing the pressure drop in each individual bundle, thereby lowering turbine back pressure.
Solution Approach 2:
The patent transitions from a horizontal condenser layout to a vertical arrangement where bundles are stacked vertically. This dimensional change allows gravity to assist steam flow distribution to the lower surfaces of each bundle, improving steam utilization of the heat exchange surface area without significantly increasing pressure drop, thus enhancing heat dissipation efficiency while controlling back pressure.
2Loss of energy
If uniform steam distribution to all inner surface areas is achieved, then heat transfer efficiency is improved, but system ducting complexity and pressure losses increase
Solution Approach 1:
The condenser is segmented into multiple bundles with individual steam distribution manifolds for each bundle. This segmentation simplifies the ducting system by providing dedicated, straightforward steam paths to each bundle rather than requiring complex distribution networks to reach all inner surfaces of a single large condenser, thereby achieving uniform steam distribution while minimizing ducting complexity and pressure losses.
Solution Approach 2:
By arranging bundles vertically and utilizing gravity-assisted flow, the patent simplifies steam distribution to lower surfaces. The vertical orientation allows steam to naturally flow downward to the lower heat exchange surfaces of each bundle, reducing the need for complex ducting systems and minimizing pressure losses while ensuring uniform steam distribution across all surfaces.
3Adaptability or versatility
If condenser assembly is performed on-site, then installation flexibility is improved, but assembly time and labor costs increase significantly
Solution Approach 1:
Multiple condenser bundles are pre-assembled into complete modular units at the manufacturing plant before shipping to the installation site. This preliminary assembly of complete modules eliminates the need for time-consuming on-site assembly of individual components, significantly reducing installation time and labor costs while maintaining installation flexibility through modular placement.
Solution Approach 2:
The patent combines multiple bundles into integrated modular units that function as complete, self-contained assemblies. By merging the bundles, manifolds, and supporting structures into unified modules during manufacturing, the system achieves rapid on-site installation through simple module placement rather than complex component-by-component assembly, thereby reducing assembly time while preserving installation flexibility.
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 modular design enhances heat exchange efficiency by ensuring uniform steam distribution, reduces turbine back pressure, and significantly decreases assembly time and costs by allowing for pre-fabrication and efficient on-site assembly.
Implementation Method 1
Dry cooling towers dissipate heat by conduction and convection
Implementation Method 2
Dry cooling towers dissipate heat by conduction and convection
Implementation Method 3
a mechanical draft cooling tower that utilizes air cooled condenser modules... operates by mechanical draft which utilizes an air current generator such as a fan
Data Source
AI summary
Modular air cooled condenser apparatus and related methods are disclosed. An example mechanical draft modular air cooled condenser includes a succession of a first condenser bundle panel, a second condenser bundle panel, a third condenser bundle panel, and a fourth condenser bundle panel. The example condenser also includes a first, second, third, and fourth condensate headers connected to respective ones of the first, second, third, and fourth condenser bundle panels. The example condenser also includes a fan positioned to create a draft to flow over the first, second, third, and fourth condenser bundle panels.