Segmented Condenser Architecture with Parallel Secondary Fluid Control
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Solution Overview
Problem
Existing heat exchanger systems with a condenser having a de-superheating segment and a condensing segment face inefficiencies in heat transfer due to the lack of optimized control over the refrigerant and secondary fluid streams, leading to suboptimal water output temperatures and energy usage.
Innovation Solution
A heat exchanger system where the secondary fluid stream is divided to feed a de-superheating segment and a condensing segment with a calculated and controlled split ratio, utilizing a flow splitter, mixer, sensors, and controllable valves to optimize heat transfer efficiency and output water temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the secondary fluid stream is fed to a single condenser unit, then the structure is simple, but the heat transfer efficiency is suboptimal and water output temperature control is limited
Solution Approach 1:
The condenser is divided into two separate segments: a de-superheating segment and a condensing segment. Each segment is optimized for its specific function, allowing independent sizing and operation. This segmentation enables better heat transfer efficiency while maintaining reasonable structural complexity through modular design.
Solution Approach 2:
Each condenser segment is designed with local optimizations tailored to its specific function. The de-superheating segment has configurations optimized for cooling superheated refrigerant, while the condensing segment is optimized for phase change. This local quality approach maximizes overall system performance.
2Productivity
If the secondary fluid stream is divided into multiple streams with controlled split ratios, then the heat transfer efficiency and water temperature control improve, but the device complexity increases
Solution Approach 1:
The secondary fluid stream is split into multiple controlled streams that are distributed to different condenser segments. Flow splitters and controllable valves create manageable sub-systems that can be independently regulated, making the complexity tractable while achieving superior heat transfer efficiency.
Solution Approach 2:
The system incorporates dynamically adjustable flow control mechanisms including controllable valves and flow splitters that can adapt the secondary fluid distribution in real-time. This dynamic control allows optimization of heat transfer efficiency under varying operating conditions while providing user control over water output temperatures.
3Temperature
If the condenser segments are operated with independent control, then the water output temperature optimization improves, but the control system complexity increases
Solution Approach 1:
Each condenser segment is equipped with independent control mechanisms including controllable valves and flow splitters that enable dynamic adjustment of refrigerant and secondary fluid flows. This independent control allows precise optimization of water output temperatures for each segment, meeting diverse thermal requirements while maintaining manageable control complexity through modular architecture.
Solution Approach 2:
The system enables independent adjustment of operational parameters (flow rates, temperatures, pressures) for each condenser segment. By allowing parameter changes in each segment without affecting others, the system achieves optimized water output temperatures while keeping control complexity localized to each segment rather than requiring complex system-wide coordination.
4Productivity
If the condenser is designed for specific ambient conditions, then the performance under those conditions is optimized, but the adaptability to varying ambient conditions is reduced
Solution Approach 1:
The divided condenser structure with independently controllable segments provides inherent adaptability to varying ambient conditions. Each segment can be independently adjusted to compensate for changes in ambient temperature, allowing the system to maintain optimized performance across a range of environmental conditions rather than being fixed for a single set of conditions.
Solution Approach 2:
The dynamic control systems including adjustable flow splitters and controllable valves enable real-time adaptation to changing ambient conditions. By dynamically adjusting refrigerant and secondary fluid flows in each segment, the system can optimize performance for current ambient conditions while maintaining the capability to adapt to future condition changes.
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 enhances heat transfer efficiency, allowing for increased maximum water temperatures and energy savings of about 3% to 5%, while also enabling specific sizing and design of the heat exchanger for improved performance under varying ambient conditions.
Implementation Method 1
the latent heat that is given up by the substance is transferred through the condenser to a surrounding environment
Implementation Method 2
a condenser is a device used to condense a substance from its gaseous to its liquid state through a cooling process
Implementation Method 3
the secondary fluid stream is divided to feed a de-superheating segment and a condensing segment with a calculated and controlled split ratio
Implementation Method 4
utilizing a flow splitter, mixer, sensors, and controllable valves to optimize heat transfer efficiency and output water temperatures
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A heat exchanger system is provided. The heat exchanger system includes a vapor-compression circuit. The vapor compression circuit includes a compressor (11), an expansion valve (12), a condenser (13) fluidly interposed between the compressor and the expansion valve and an evaporator (14) fluidly interposed between the expansion valve and the compressor. The condenser includes a de-superheating segment (20) and a condensing segment (30). The condensing segment is receptive of a first liquid downstream from the de-superheating segment. The condensing and de-superheating segments are receptive of a second liquid in parallel. Flows of the second liquid into the de-superheating segment are controllable by a control valve (70) based on the temperature of flows of the second liquid exiting the de-superheating segment measured by a temperature sensor (60).