Cross dehydrogenative coupling reactions (CDCs) are considerably more step- and atom efficient compared to classical cross methods. In this context, the photochemical CDCs of hydrochlorocarbons hydrofluorocarbons with methylarenes herein described. This unprecedented CDC reaction concept enables a new retrosynthetic cut for selective construction valuable chlorinated fluorinated organic skeleto...

This work presents an experimental approach to study the refrigerant flow through capillary tube-suction line heat exchangers. Lateral heat exchanger performance with refrigerant HFC-134a was experimentally evaluated for a range of heat exchanger assemblies and operating conditions typically found in household refrigerators and freezers. Based on the resulting performance data base, the influen...

A new analytical inversion method has been developed to determine the regional and global emissions of long-lived atmospheric trace gases. It exploits in situ measurement data from three global networks and builds on backward simulations with a Lagrangian particle dispersion model. The emission information is extracted from the observed concentration increases over a baseline that is itself obj...

This paper describes the experimental characteristics of cantilever type journal bearings in reciprocating compressors for HFC-134a. The purpose of this study is to compare the effects of bearing material, chemically treated shafts, bearing stiffness and refrigerant solubility in the oil to the characteristics of journal bearings lubricated with a mixture ofHFC-134a and lubricating oil As a res...

Abstract. This study evaluates the potential usefulness of halogenated compounds HCFC-22, HCFC-141b, HCFC-142b, HFC-134a, HFC-125, HFC-23, PFC-14, and PFC-116 as oceanographic transient tracers to better constrain ocean ventilation processes. We do this mainly in terms four aspects characteristics tracers: input function (including atmospheric history historical surface saturation), seawater so...