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Inhaltsangabe zu "Coabsorbent and Thermal Recovery Compression Technologies"
The coabsorbent technology bases on the classic absorption technology, but it is more general than this. It is capable to find effective solutions, practically for all kind of cooling and / or heating applications, met in industry, agriculture, district, household, etc., provided that two supplying sources with temperatures outdistanced by minimum (12-15)ºC are available. It is mostly indicated to be utilized in applications which recover free low grade heat sources, coming of naturally, or from the industry technological processes. The book describes, in this respect, the new coabsorbent cycles with potential applications, of nontruncated, truncated, hybrid truncated and multi-effect type. It also presents new absorption related topic, including the divided-device (DD) method for mass and heat transfer analysis, the truncation as unique method for a better source-task match and the truncation theory, the advanced gax recovery, the 1st and 2nd principles COP and exergy calculation, the ideal point approaching (i.p.a.) effect, the Two-Point Theory (TPT) of mass and heat transfer, the new wording of Laplace equation, the Marangoni effect true explanation and the new mass and heat exchangers based on this effect. Applications of separate and combined cooling, heating and power (CHP) production, advanced water-lithium bromide cycle air conditioning and high efficiency ammonia-water heat driven heating and industrial low temperature cooling, are presented in detail.
The cooling and heating using mechanical vapor compression is the most spread in the world today, with the largest number of applications and capacities. As compared to the classic technology, the thermal recovery mechanical vapor compression technology proposes as novelty, the recovery of the discharge gas superheating, with positive energy consequences. The recovered superheat is converted in useful issues with the help of two methods. According to the first, termed thermal-to-work recovery compression , the heat is converted in work which diminishes the compressor work input. According to the second, named thermal-to-thermal recovery compression , the heat is converted in useful cooling and / or heating effect, added to the cycle output effect via the coabsorbent technology. Other important aspects concerning these methods, including the 1st and 2nd principles COP calculation, the choice of the recovery compression cycles, cycles structure solutions, the coabsorbent technology use in application and the computation of the optimum intermediary pressures of multi-stage compression, are given as well. The methods are analyzed for single-, two- and three-stage compression cooling and heating ammonia and ammonia-water cycles, and the model effectiveness results are given.
The presentation is clear and concise, illustrating the theory and applications by diagrams, tables and flow-charts.