Systematic assessment of working fluid mixtures for absorption refrigeration based on techno-economic, environmental, health and safety performance was written by Papadopoulos, Athanasios I.;Gkouletsos, Dimitris;Champilomatis, Vassilis;Giannakakis, Alexandros;Kousidis, Vergis;Hassan, Ibrahim;Seferlis, Panos. And the article was included in Energy Conversion and Management in 2020.Application In Synthesis of 2,5,8,11-Tetraoxadodecane This article mentions the following:
Absorption refrigeration is a promising technol. for the replacement of vapor compression systems. Few, conventional mixtures of organic components have been evaluated to date as working fluids using mainly operating performance indicators. The aim of this work is to evaluate 75 working fluid mixtures, including 18 novel options as candidates for single-effect absorption refrigeration processes. Multiple performance indicators are considered such as coefficient of performance, exergy efficiency, high cycle pressure, distillate-to-feed ratio and number of stages in the rectifier, mass flowrates, process economics and safety, health and environmental properties of fluids. The evaluation is performed within a systematic, stage-wise approach, which employs multi-criteria anal. It is observed that mixtures of acetaldehyde with DMF or methylpyrolidone exhibit up to 40% and 22% lower costs per ton of cooling compared to ammonia-water and water-lithium bromide. The same mixtures also outperform or match the coefficient of performance of ammonia-water. Propionaldehyde and Me formate with the same absorbents are also competitive options in smaller scale processes, while they exhibit better health, safety and environmental properties than acetaldehyde. The new mixtures are of equivalent or better safety, health and environmental performance than other well-known refrigerants. In the experiment, the researchers used many compounds, for example, 2,5,8,11-Tetraoxadodecane (cas: 112-49-2Application In Synthesis of 2,5,8,11-Tetraoxadodecane).
2,5,8,11-Tetraoxadodecane (cas: 112-49-2) belongs to ethers. The oxygen atom in ethers are more electronegative than carbon, thus the hydrogens which are alpha to the ethers are more acidic than the simple hydrocarbons. Ethers can form hydrogen bonds with other molecules (alcohols, amines, etc.) that have O閳ユ椊 or N閳ユ椊 bonds. The ability to form hydrogen bonds with other compounds makes ethers particularly good solvents for a wide variety of organic compounds and a surprisingly large number of inorganic compounds.Application In Synthesis of 2,5,8,11-Tetraoxadodecane
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem