• RULE-BASED MAMDANI-TYPE FUZZY MODELING OF PERFORMANCE OF HYDROXY (HHO) DRY CELL WITH 12×12 PLATE COMBINATION

    Machines. Technologies. Materials., Vol. 12 (2018), Issue 9, pg(s) 378-381

    The fossil fuels and the natural gas reserves that have undertaken the role of the locomotive of the industrial period are limited. It is also the biggest factor in environmental problems. All these reasons lead to the need for alternative fuels or resources. Hydrogen is the candidate to be one of these alternatives; is an unlimited clean and efficient fuel. Hydrogen may assume the role of carrier in the process of storage of other alternative energy sources. Today, interest in hydrogen energy is increasing. One of the reasons for this is that hydrogen can be produced from renewable energy sources such as water, biomass, wind and sun as well as hydrogen from primary energy sources. There is no polluting gas emissions when hydrogen is used as fuel. The HHO dry cell is a device that converts water into HHO (oxyhydrogen) gas. In this study, performance of HHO dry cell with 12×12 plate combination was experimentally investigated and modeled with a Rule-Based Mamdani-Type Fuzzy (RBMTF) modeling technique. Input parameters are; plate number, time, current; output parameter is mass flow rate. The coefficient of multiple determination (R2=98.5) for the mass flow rate. RBMTF results indicated that RBMTF can be successfully used in HHO dry cell with 12×12 plate combination.

  • MATHEMATICAL MODELLING OF TECHNOLOGICAL PROCESSES AND SYSTEMS

    MODELING OF THE EFFECTS OF THREEFOLD TYPE RHVT AND SIX CASCADE TYPE RHVT ON THE PERFORMANCE OF COUNTER FLOW RHVTS BY FUZZY LOGIC APPROACH

    Mathematical Modeling, Vol. 1 (2017), Issue 1, pg(s) 48-50

    In this study, performances of Ranque-Hilsch Vortex Tubes (RHVTs) were modeled under three different situations based on inlet pressure and the ratio of mass flow rate of the cold stream to the mass flow rate of the inlet stream (ξ) by fuzzy logic approach. 1st situation is the conventional RHVT. 2nd situation is the threefold cascade type RHVT. Here three RHVTs were used. 3rd situation deals with the six cascade type RHVT. In this case, six RHVTs were used. Input-output parameters were described by Rule Based Mamdani Type Fuzzy (RBMTF) with if-then rules. The performance parameters are the difference between the hot and cold stream temperatures (∆T), the cold flow fraction (ξ), inlet pressure conditions. The comparison between experimental data and RBMTF is done by using statistical methods like absolute fraction of variance (R2). The actual values and RBMTF results indicated that RBMTF can be successfully used for the analysis of performance RHVTs.