Abstract
The gas fired absorption heat pump provides a potentially more efficient alternative to the standard gas fired central heating boiler. The working fluid consists of a mixture of a volatile solute and an involatile solvent, whose thermodynamic properties play a key role in the economics of the pump.The mixtures should show large negative deviations from Raoult's law at the absorber temperature and becoming less marked as the temperature is raised to that of the generator. The requirements imply strong solute-solvent interactions such as provided by hydrogen bonding or complex formation, and guided our search for useful mixtures.The thermodynamic requirements for the heat pump will be reviewed. Thermodynamic measurements on a wide range of mixtures will be described and the results presented as trends with changing molecular structure. Solutes prepared, include fluorinated derivatives of alkanes, cycloalkanes, ethers and amines. Solvents selected were either electron pair donors eg tetraglyme, 1,3-dimethyl-2-imidazolidone; or weak acids, including a range of halogenated phenols.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
