Revista HIDRAULICA | HIDRAULICA Magazine

ISSN 2343–7707 ; ISSN-L 1453-7303

Here below we post a list of
Articles already accepted for publication in Issue 1/(March) 2024 of ‘Hidraulica’ Magazine.
The list displays the article title, author(s) and affiliation(s),
and also the article abstract.
Full-length article will be available online only after publication. 

  • Constructive Design Elements of Large Dimensions Cyclones
    Professor Emeritus Ph. D., Eng. Radu I. IATAN1, Ph. D. Candidate Melania (MITUCĂ) CORLECIUC2, Lecturer Ph. D. Eng. Gheorghiţa TOMESCU1, Assoc. Prof. Ph. D. Eng. Anca Mădălina DUMITRESCU1, Lecturer Ph. D. Eng. Luminiţa Georgiana ENĂCHESCU1, Assist. Prof. Ph. D. Eng. Gheorghe-Cosmin CIOCOIU1
    1National University of Sciences and Technology Polytechnic Bucharest, Romaniq
    2National Agency for Environmental Protection, Romania


The article addresses the issues specific to the constructive design of large cyclones, with tangential supply of the dust impurified gas. In this sense, the expressions for the stresses developed in the separation sections of the vortex finder tube and the flat sheet are established. The radial size of the plate, fixed also to the side body of the cyclone, is considered large. In this sense, the deformation states and stresses in the edges are accepted as not influencing each other.


  • Considerations regarding the Recovery and Utilization of Residual Heat from Data Centers
    Assoc. Prof. PhD. Eng. Adriana TOKAR1, Univ.Asst. PhD. student Eng. Daniel MUNTEAN1, Univ.Asst. PhD. student Eng. Dănuț TOKAR1, Lecturer PhD. Eng. Daniel BISORCA1, Assoc. Prof. PhD. Eng. Mihai CINCA1
    1University Politehnica Timișoara, Romaniq


    In the context of the acceleration of the need to store and process data and digital telecommunications, which leads to an increase in global electricity consumption and greenhouse gas emissions, the need for research to find reliable, efficient, and cost-effective solutions to reduce energy consumption and the recovery of the residual heat produced by the data centres is an increasingly urgent one. The article presents aspects that refer to the recovery of residual energy from data centres and its use for the preparation of domestic hot water, but also for the preparation of the thermal agent necessary for heating installations in buildings and respectively modern heating systems, with the mention that the latter work at a low temperature regime.


  • Modeling and Simulating the Operation of the Pneumatic Cylinders
    Prof. PhD Eng. Anca BUCUREȘTEANU1
    1University POLITEHNICA of Bucharest, Romaniq


    This paper presents the simulation and mathematical models necessary for studying the behavior of the pneumatic cylinders in static and dynamic conditions. The mathematical models are simplified, accessible and adaptable to different applications; they can be used in the design phases of new pneumatic units in the industrial fields. The models for cylinders with or without braking at travel end are presented.
    Depending on each system, these models can be supplemented with models of equipment for regulation and distribution, in order to study the respective systems. The proposed models try to take into consideration the particularities of the pneumatic systems: compressible working environment, maximum working pressure limited to 10 bar at the most, specific damping effects, etc.


  • Simulation Study of a Double-Acting Hydraulic Cylinder with Shock Absorber 
    Dr. eng. Tiberiu AXINTE1, Dipl. Eng. Lidia CALANCEA1, Dr. mat. Elena CURCA1, Dipl. Eng. Mihai DIACONU1, Dipl. Eng. Camelia PASCU1
    1Research Center for Navy, Romania


    This paper focuses on the efficiency of the double-acting hydraulic cylinders with shock absorber at stroke end. In the present work, the simulation of two hydraulic circuits and an electro-hydraulic circuit with double-acting cylinders with shock absorber is studied. Thus, the first hydraulic circuit is made of the following components: tank, throttle check valve, 4/2-way hand lever valve with spring, filter, fixed displacement pump, and double-acting cylinder with shock absorber at stroke end (Dacs 1-1). The second hydraulic scheme has the following devices: pump unit, throttle valve, 4/3-way hand lever valve, and two double-acting cylinders with shock absorber at stroke end (Dacs 2-1 and Dacs 2-2). The third circuit studied is an electro-hydraulic scheme. The last scheme is made of the following components: tank, 4/3-way solenoid valve, nozzle, relay, valve solenoid, lamp, capacitive proximity switch, and double-acting cylinder with shock absorber (Dacs 3-1).


 

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