scholarly journals Indirect controllability of locally coupled wave-type systems and applications

2013 ◽  
Vol 99 (5) ◽  
pp. 544-576 ◽  
Author(s):  
Fatiha Alabau-Boussouira ◽  
Matthieu Léautaud
Keyword(s):  
2011 ◽  
Vol 18 (2) ◽  
pp. 548-582 ◽  
Author(s):  
Fatiha Alabau-Boussouira ◽  
Matthieu Léautaud
Keyword(s):  

Author(s):  
Andrzej Grzebielec ◽  
Adam Szelągowski ◽  
Adam Ruciński

Adsorption refrigeration systems, as opposed to absorption type operate in a cyclic manner. The result is that at the beginning of each process must be fed into the adsorber state in which they will adsorb or desorb a refrigerant. In the case of two adsorbers at the start of a cycle, the one of the adsorber must be refrigerated while the second has to be heated. These processes are causing unnecessary energy loss. The aim of the work is to show how these processes can be connected and the heat received from one adsorber is transported to another adsorber. As part of the study, the heat and mass recovery processes will be considered. It turns out that in the thermal wave type systems, it is possible to recover more than 25% of the energy lost to bring the adsorber to the states in which they will operate efficiently to desorb and adsorb refrigerant. That is, it is possible to improve the efficiency of the adsorption refrigeration unit using the proposed improvements.


2002 ◽  
Vol 29 (2) ◽  
pp. 243-248 ◽  
Author(s):  
V.S. Gerdjikov ◽  
G.G. Grahovski ◽  
N.A. Kostov
Keyword(s):  

SIMULATION ◽  
1970 ◽  
Vol 14 (6) ◽  
pp. 271-279 ◽  
Author(s):  
Heinz Schuchmann

This paper presents analog, hybrid, and digital simulation techniques for one-dimensional flow, diffusion, and wave- type systems. These techniques also provide the basis for the simulation of more complex distributed-parameter systems. Many of the techniques considered are well known; however some of them are just recently devel oped. The various techniques result from either discretiza tion and transformation of the original partial differential equations or from application of the method of charac teristics. From this point of view, it is possible to fit the techniques into a general framework. It will be indicated by means of the properties of each technique which type of computer will best implement it and which system can be treated by it most advantageously.


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