Absorption Refrigeration Cycle and Compression-Absorption Refrigeration Cycle
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing absorption refrigeration cycles face challenges with toxic ammonia refrigerants having low global warming potential and non-toxic HFC refrigerants with high global warming potential, necessitating the development of systems using non-toxic refrigerants with low global warming potential.
Innovation Solution
An absorption refrigeration cycle utilizing refrigerants with a global warming potential of less than 1000, such as HFO-based, HFC-based, and HCFO-based refrigerants, combined with an absorbing liquid comprising specific compounds represented by Formulas (1), (2), and (3), and a compression-absorption refrigeration cycle that shares the refrigerant, reducing the circulation ratio and improving performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional absorbing liquid is used in absorption refrigeration cycle, then circulation ratio is high, but system performance is limited
Solution Approach 1:
The patent modifies the chemical composition parameters of the absorbing liquid by selecting compounds with specific molecular structures (represented by Formulas 1-3 with defined R1, R2, and n parameters). This parameter optimization reduces the circulation ratio while maintaining effective refrigerant absorption, thereby improving overall system performance.
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 solution enables the use of non-toxic refrigerants with low global warming potential, enhancing the performance of absorption refrigeration cycles and compression-absorption refrigeration cycles by reducing the circulation ratio and achieving efficient cooling operations.
Implementation Method 1
an absorber that absorbs the refrigerant
Implementation Method 2
a regenerator that separates the refrigerant from the refrigerant-absorbing liquid
Data Source
AI summary
An absorption cycle (110) according to the present invention is configured to operate using: a refrigerant having a global warming potential of less than 1000, and including at least one of an HFO-based refrigerant, an HFC-based refrigerant, and an HCFO-based refrigerant; and an absorbing liquid including at least one compound represented by Formulas (1), (2), and (3): R1—(OCH2CH2)n—OR2 (1) R1—(OCH2CH(CH3))n—OR2 (2) R1COO—(OCH2CH2)n—OR2 (3) where R1 and R2 are each independently a hydrogen atom or an alkyl group having a carbon number of 1 or more and 6 or less, and n is an integer of 1 or more and 6 or less.