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Two-phase flow pattern data were obtained with 12.0 mm bore sight glasses for five refrigerants: R-123, R-134a, R-502, R-402A and R-404A. The existing flow pattern maps of Taitel-Dukler and Hashizume poorly represented the data while the VDI map identified ...
Natural Gas is one of the few truly viable alernatives to liquid fuels which does not significantly alter the user’s perception of the vehicle. Natural gas has several major advantages, particularly in terms of environmental impact however a number of obst ...
The paper describes two 3.9 MWth ammonia heat pumps of a District Heating plant which also includes two gas turbine cogeneration units. After nine years of reliable operation the heat pumps still show excellent coefficients of performance of above 4.1. Thi ...
Flow patterns for horizontal intube flow boiling have been studied for the new refrigerants HP80 and HP62 and the conventional refrigerant R-502. The flow pattern observations were compared with several criteria utilized in horizontal flow boiling correlat ...
PINCHLENI is a software for energy integration of industrial processes based on Pinch Analysis. The software in version 2.0 allows: - the visualisation of the composite curves and the grand composite curve - the choice of the optimal pinch based on economi ...
Le projet “PACLAC” a but de déterminer les possibilités de valoriser le “gisement naturel” que constitue l’énergie thermique des grands LACs suisses pour le chauffage urbain en faisant appel à la technologie des PACs (pompes à chaleur). Le concept proposé ...
The pinch analysis method is a useful tool for the energy integration of industrial processes (structuring and simplification using simple guidelines). The pinch analysis method, extended to include exergy factors, falls within the framework of a global mu ...
Ce rapport est le quatrième d’une série de quatre. Il traite des échanges de chaleur dans le four No. 2 de la centrale d’incinération de Cottendart (NE). Seule la partie du système four-chaudière appelée zone à rayonnement ou simplement four est traitée ic ...
Flow boiling experiments for two new non-azeotropic, three-component refrigerant mixtures (HP80 and HP62) and R-502, the azeotropic refrigerant binary mixture they are replacing, have been carried. Comparative results show that local flow boiling heat tran ...
