Building a successful warehouse management system encompasses solving many problems of different nature to reshape the general workflow and ensure improvements in terms of resource management. In order for such a system to be accepted and used by a logistics company, those solutions need to be presented through a simple, adaptable and most importantly, a feasible software solution. One of the aspects that needs to be covered while building a warehouse management system is the optimal product placement in the warehouse. If the products are strategically placed, all the other improvement strategies like stock to picking zone item transfer and item picking order become more efficient and easier to implement. In this paper, tactics and issues regarding the optimal product placement in a warehouse are analyzed in detail through a real-world case study. Solutions of this problem largely differ for new, empty warehouses and for already operative warehouses not able to carry out a stocktaking process. Approaches for both possible situations are proposed and tested out on two different warehouses in a medium-to-large logistics company.

Velocity of solid particles in aero-mixture channel has been recognized as the most significant factor that has an influence on erosion. In this paper, numerical study of particle erosion in aero-mixture channel was conducted due to the main parameters that have the greatest impact. Pulverised coal boiler OB650 is supplied with an aero-mixture (pulverised coal and flue gases) through distribution channels, 2358 Amel Mešić et al. where the distribution of the same aero-mixture is regulated with a tilt of regulation dumper. These types of regulation cause the problems that have greater impact on the internal structure of the same distribution channels. It is concluded that the best way to determinate that problems is with CFD tool. In this case CFD tool was used to simulate the flow field inside the channel, using EulerLagrangian mathematical approach.

A steam boiler in its original meaning is an object in which thermal energy, resulting from combustion of organic fuels, is transferred through heat surfaces to a working fluid which evaporates in the boiler with the steam further overheated to a certain temperature. steam boiler bec me more complex, in order to fulfil con demands for more efficient transformation of fuel chemical energy into thermal energy and its efficient transfer to a working fluid. With such an aim, steam boiler with additional equipment and such a complex assembly of different machines and devices connected to classical furnace and heat exchangers was named steam boiler plant. During the last decades, due to boiler plants of large capacities and high parameters with intensification and automation of all processes inside the plant, a term "steam generator" was adopted which mainly refers to large power units. Over the time, the a stant

Fluids, steam and gas carry out thermal energy transportation by long pipes as energy bearers. This transportation is associated with complex problems, where the special issue is optimization of pipe systems. This optimization should find optimum ratio between physical parameters of transportation, environment state and economical parameters. In this work, partial optimization of hydraulic parameters in pipeline systems is made in example of thermal energy for Tuzla city from Power Plant "Tuzla " BiH.