the purpose of this paper is multi-objective optimization of refrigeration cycle by optimization of all components of the cycle contains heat exchangers, air condenser, evaporator and super-heater. studied refrigeration cycle is compression refrigeration cycle of unit 132 third refineries in south pars that provide chilled water for cooling refinery equipment's. cycle will be performed by ...

nowadays the quality of life is one of the factors that have special standing in the context of urban planning studies. this factor became significant due to the increasing importance of quality of life in the monitoring of public policy and its role as an efficient tool in the management and planning. urban life quality is usually measured through the surveying and evaluation of subjective per...

Multi-converter system is mainly used in advanced automotive systems. Different converters and inverters are taking part systems to provide different voltage levels a multi-converter system. It involves constant load (CVL), power (CPL) other loads. The CPL such offers negative impedance characteristic it creates destabilizing effect on the main converter. of destabilization can be reduced by in...

The need to increase agricultural production has become a challenging task for most countries. Generally, many resource factors affect the deterioration of level, such as low water desertification, soil salinity, on capital, lack equipment, impact export and import crops, fertilizers, pesticide, ineffective role extension services which are significant in this sector. main objective research is...

Control charts are widely applied in industrial practice to maintain manufacturing processes in desired operating conditions. Design of control charts aims at finding the best parameters for the operation of chart. In recent years, it has been revealed that the control charts operating with VSI (variable sampling interval) schemes give better performance than with FSI (fixed sampling interval) ...

The performance of a product is often evaluated by several quality characteristics.  ptimizing the manufacturing process with respect to only one quality characteristic will not always lead to the optimum values for other characteristics. Hence, it would be desirable to improve the overall quality of a product by improving quality characteristics, which are considered to be important. The probl...