Cycle enhancement methods, systems, and devices
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Solution Overview
Problem
Current refrigeration and heat pumping technologies face inefficiencies and complexity, particularly in vapor compression systems, which can be improved by integrating freeze point suppression cycles to enhance overall efficiency and dispatchability with minimal additional complexity.
Innovation Solution
The integration of a thermally driven heat pump, utilizing waste heat from the vapor compression cycle to power a freeze point suppression cycle, which then provides cooling back to the vapor compression cycle, achieved through heat exchangers that thermally connect both cycles, allowing for improved refrigerant temperature management and reduced compressor work.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a freeze point suppression cycle is integrated with a vapor compression cycle, then overall efficiency and dispatchability are improved, but device complexity increases
Solution Approach 1:
The patent combines a freeze point suppression cycle with a vapor compression cycle into an integrated hybrid system. The two cycles are merged through shared components (heat exchangers, refrigerant pathways) and coordinated operation, allowing the system to achieve improved overall efficiency and dispatchability while managing complexity through unified design rather than separate independent systems
Solution Approach 2:
The integrated cycle system performs multiple functions: the vapor compression cycle provides primary refrigeration, while the freeze point suppression cycle provides supplemental cooling and prevents refrigerant freeze-up. The system can operate in different modes depending on conditions, making it adaptable and efficient across varying operational requirements
2Loss of energy
If waste heat from vapor compression cycle is used to power freeze point suppression cycle, then energy efficiency is improved, but device complexity increases
Solution Approach 1:
The patent converts the waste heat that would normally be discarded from the vapor compression cycle into a useful resource to power the freeze point suppression cycle. This heat recovery approach transforms an energy loss into a beneficial driving force for the supplemental cooling system, significantly improving overall energy efficiency
Solution Approach 2:
Heat exchangers serve as intermediary components that transfer thermal energy from the vapor compression cycle to the freeze point suppression cycle. These intermediaries enable the waste heat utilization while maintaining operational independence between the two cycles, managing complexity through standardized heat transfer interfaces
3Temperature
If refrigerant temperature is reduced below ambient temperature, then cooling performance is improved, but device complexity increases
Solution Approach 1:
The freeze point suppression cycle pre-cools the refrigerant below ambient temperature before it enters the vapor compression cycle's evaporator. This preliminary cooling action ensures the refrigerant is sufficiently sub-cooled to prevent freeze-up during expansion and operation, improving cooling performance while avoiding the need for more complex cooling systems
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 approach enhances the efficiency and performance of vapor compression cycles by utilizing waste heat, reducing refrigerant temperatures below ambient levels, and improving overall system performance with minimal additional complexity.
Implementation Method 1
The integration of freeze point suppression cycles and vapor compression cycles may be accomplished through the placement of heat exchangers in both cycles thermally connecting them
Implementation Method 2
utilizing the first removed heat from the vapor compression cycle to drive a thermally driven heat pump
Data Source
AI summary
Methods, systems, and device for cycle enhancement are provided in accordance with various embodiments. Various embodiments generally pertain to refrigeration and heat pumping. Different embodiments may be applied to a variety of heat pump architectures. Some embodiments may integrate with vapor compression heat pumps in industrial, commercial, and/or residential applications. Some embodiments include a method that may include at least: removing a first heat from a vapor compression cycle; utilizing the first removed heat from the vapor compression cycle to drive a thermally driven heat pump; or removing a second heat from the vapor compression cycle utilizing the thermally driven heat pump to reduce a temperature of a refrigerant of the vapor compression cycle below an ambient temperature.