The Weight of Influence of Factors on Microtrigeneration Systems (mCCHP) Using Taguchi Methods NELU CAZACU 1 , NICOLAE BADEA 2 1 Dept.of Metallurgy and Materials Science, 2 Dept.of Electrical Engineering “Dunarea de Jos” University of Galati Domneasca str. 111, 800201 ROMANIA nelu.cazacu@ugal.ro http://www.ugal.ro Abstract: - Microtrigeneration systems are characterized by simultaneous generation of power, heat and cold for small applications (<50kW) and are designed for reducing GHG and other emissions decreases. The cooling generation by absorption or adsorptions from heat is the most sensible stage of mCCHP systems. The paper is based on the global mathematical model for a mCCHP system with thermal prime mover. The conceptual design of a mCCHP and was established the influence factors over the global efficiency of the system. The weight of influence factors was made using Taguchi methods and typified orthogonal array. The mathematic model (ANOVA) was used for weight of factor influence prediction, in order to global efficiency maximization. The simulation results showing signal and noise factors and these results are important for system design, subsystem selections, materials selections and optimal regime settings. Key-Words: - microtrigenerations, mCCHP, Taguchi methods, energy, evaluation. 1 Introduction Microtrigeneration systems (mCCHP) are characterized by simultaneous generation of power, heat and cooling for small applications (<50kW) [2, 3]. The global efficiency of fossils fuels increasing and in according to that GHG and other emission decreases. A great diversity of mCCHP structures are in researches study and experimental stages. mCCHP systems are in direct dependencies by prime mover (thermal stage) of energy conversion. The conceptual structures and designed mCCHP systems are over direct influences of the prime mover or thermal conversion. Usual thermal motor are Diesel engine, Otto engine, Stirling engine, fuel cells etc. The Diesel engines application for prime movers is considered a classical but conceptual structure of the mCCHP systems follows the continuous evolutions of different thermal motor. The prime movers (thermal stage) introduced some limitations regarding the fuel and the possibility to use the renewable energy [6,7]. Based on this, the Stirling engine offers a large spectrum on fuels because the system is characterised by external burning. Trigeneration is usually based by the same initial fuel like an energy sources. The trigenereation system structure is in direct dependences with fuel and the thermal initial conversion (prime mover). A principle scheme of mCCHP is showed in Fig. 1. The maximum use of fuel energy is correlated with heat of burning system, heat is recovered and converted in heat or cooling and is delivered. Fig. 1 Schematic representation of a trigeneration system (mCCHP) to cover peak energy demand NON-LINEAR SYSTEMS and WAVELET ANALYSIS ISSN: 1790-2769 67 ISBN: 978-960-474-189-2