Absorption subcooler for a refrigeration system
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional refrigeration systems are inefficient in cooling refrigerant, leading to high power consumption and waste heat generation, especially when using natural refrigerants which produce higher compressor discharge temperatures, making it challenging to condense refrigerant effectively in traditional condensers.
Innovation Solution
Incorporating an absorption subcooler powered by waste heat, which applies multiple cooling stages to the refrigerant before it reaches the gas cooler, reducing the load on the gas cooler and overall system power consumption by pre-cooling the refrigerant using heat exchangers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional refrigeration systems cool refrigerant directly from compressor to gas cooler, then the system structure is simple, but power consumption is high and cooling efficiency is low
Solution Approach 1:
The cooling process is divided into multiple stages: a first heat exchanger provides initial cooling of the compressed refrigerant, followed by a gas cooler that provides further cooling. This segmentation allows each component to operate more efficiently, reducing overall power consumption while maintaining a manageable system structure.
Solution Approach 2:
The first heat exchanger performs preliminary cooling of the compressed refrigerant before it enters the gas cooler. By pre-cooling the refrigerant in advance, the load on the gas cooler is reduced, leading to lower power consumption and improved overall system efficiency.
2Object-affected harmful factors
If natural refrigerants are used in conventional systems, then environmental friendliness is improved, but compressor discharge temperature increases making condensation difficult
Solution Approach 1:
The first heat exchanger performs preliminary cooling of the high-temperature compressed refrigerant before it enters the gas cooler. This pre-cooling action reduces the temperature burden on subsequent cooling components, making it easier to condense natural refrigerants that produce high discharge temperatures.
Solution Approach 2:
The first heat exchanger acts as an intermediary component between the compressor and the gas cooler. It mediates the temperature transition by providing initial cooling, thereby facilitating the subsequent condensation process for natural refrigerants with high discharge temperatures.
3Productivity
If absorption subcooler with multiple cooling stages is added, then energy efficiency is improved, but device complexity increases
Solution Approach 1:
The cooling function is segmented into two distinct heat exchangers: a first heat exchanger for initial cooling and a gas cooler for further cooling. This segmentation improves cooling efficiency by allowing each component to be optimized for its specific function, while the modular structure keeps the overall device complexity manageable.
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 absorption subcooler enhances energy efficiency by reducing flash gas flow and overall power consumption, allowing for lower compressor frequencies and fan speeds, and providing cooler refrigerant to downstream components, thereby improving the refrigeration system's energy efficiency.
Implementation Method 1
a first heat exchanger operable to receive the compressed refrigerant from the compressor and to apply a first cooling stage to the compressed refrigerant
Implementation Method 2
a third heat exchanger external from the absorption subcooler and operable to receive the refrigerant that has been cooled by the first heat exchanger and to apply a second cooling stage to the refrigerant
Implementation Method 3
the absorption subcooler is powered by heat absorbed by the first heat exchanger
Data Source
AI summary
An absorption subcooler comprises a first heat exchanger operable to receive refrigerant from a compressor of a refrigeration system and apply a first cooling stage to the refrigerant. The absorption subcooler is further operable to discharge the refrigerant to a gas cooler operable to apply a second cooling stage to the refrigerant.