This paper deals with the theoretical elaboration of the method of evaluation of the benefits of business models. Its aim is to methodically design and describe the process of evaluating business models based on the analysis of the market value of the company calculated using the present value of future income.

Experiments on natural convective mass transfer adjacent to horizontal isothermal cone cavity were performed, the water film temperature was ranging from 35°C to 75°C. Water was evaporating to moist air. Analytical equation describing the depletion of mass in cone cavity was derived and used for evaluation of mass flux and averaged mass transfer coefficients from experimental data. Sherwood numbers were determined and correlated as a function of Rayleigh number. Obtained correlation was compared with existing correlation with satisfactory discrepancy and extended the previous range of validity to Ra_m=(1÷400000).

Additive manufacturing methods are considered suitable for technical processes in the manufacture of complex mechanical parts. WAAM together with 3D metal printing are the basic technologies used for additive production. WAAM (Wire and Arc Additive Manufacturing) technology is characterized using welding to create whole structure of mechanical part by cladding weld passes. The WAAM process is characterized by a number of variables, among others the MIG/MAG protective gas shields effects. The aim of this paper is to evaluate the influence of individual components of protective gases supplied by Air Products s.r.o. used for welding the whole structure. Especially both to the resulting component geometry and to the efficiency of the welding process.

The aim of the work is to design technologies suited for manufacturing plant-based coconut yoghurts and yoghurts made from hydrolyzed milk for an existing factory of milk products. Material and enthalpy balances are computed, economic evaluation of the projects including what-if analysis of selected parameter is carried out. Designed variants are compared.

This paper presents a solution of a dam collapse flow over a dry horizontal bed in two dimensions using the weakly compressible smoothed particle hydrodynamics (SPH) method. This work focuses mainly on the evaluation of pressure and forces exerted on the downstream vertical wall. First, a pressure evaluation technique suitable for weakly compressible SPH is described. Validation of the technique using experimental data follows, and finally, the total force on the vertical wall is evaluated. Analysis of pressure distribution and total force as a function of time is carried out. All physical quantities are converted into non-dimensional variables for simple comparison with other results.

The system combination of photovoltaic modules and heat pump is a very promising way of increasing renewable energy usage for domestic hot water preparation and space heating. The paper deals with analysis of ground-source heat pump connected to the customer domestic hot water and space heating load through the thermal energy storage. This combined system has been studied by means of numerical simulations. The challenging issue in the system is the controller setup. In this research, several ruler-based controller strategies are employed to maximize photovoltaic electricity usage on-site: by means of overheating the building or/and by means of overheating thermal energy storage. These approaches allow to store energy surplus generated by photovoltaics. Comparison between different system control setups and the refence case shows the absolute electricity savings and moreover, the results reveal advantages of proposed combined system and show the ways to maximize usage of the high volatile photovoltaic electricity. The simulation results for NZEB house with heating energy demand of 14 kWh/m2.a indicate solar fraction raise up to 50 % , furthermore such combined systems are able to reach system seasonal performance factors in the range of 6.0.

The aim of our project is to create a biological cell model by microfluidics device. The current methods for production of microfluidic devices are complex and time-demanding. Therefore we have proposed, tested and verified a specific technology for the development of microfluidic device using stereolitography. We have produced several types of microfluidic devices: from simple one to devices with complex geometry. We have proved that it is possible to produce uniform unilamellar liposomes with controlled size and shape. The liposomes will serve as biological cell models to test mechanical properties living cells of various fenotypes.

This article deals with technological possibilities of production of functional parts by means of additive technologies combined with chip cutting machining. DMLS technology (Direct Metal Laser Sintering) allows the production of components from different construction materials such as steel, stainless steel, aluminum, titanium and many others. This components offer full mechanical prop-erties after thermal treatment and therefore can be used as functional parts. However, in the case of precision mechanical parts, this technology does not allow production with sufficient dimensional accuracy and surface quality. For these reasons, additional machin-ing may be necessary. However, from a productivity and economy point of view, it is advisable to limit machining to the minimum amount of material taken and, above all, to the minimum machining time. For this purpose, the part should be designed from the be-ginning with regard to further processing.

As a result of the globalizing market is the product logistics becoming one of the important cost item within the whole lifecycle of production device. However, shipping costs are very difficult to predict because they can be affected by a number of factors. The objective of this article is to summarize the main factors influencing the transport costs of truck transport of the product and to introduce a propasal of methodology for estimation of transport costs of the product.

This paper presents an investigation of a two-dimensional approach to numerical prediction of aerodynamical noise generated by NACA 0012 airfoil. The aim of this paper is to investigate this approach as a simple prediction method for aerodynamical noise generated by two-dimensional bodies. The numerical simulation was performed by the commercial software (Ansys Fluent) using unsteady Reynolds-averaged Navier-Stokes (URANS) equations for a flow solution and Ffowcs-Williams and Hawkings (FW-H) analogy for an acoustic solution. The obtained results were compared to available published experimental results.

Car manufacturers are forced to fulfill strict production limits of carbon dioxide. Therefore, the weight of car body must be reduced. The subject of this article is use of dual phase steel with tensile strength higher than 500 MPa in production of outer car body parts. Stampings used in experiment are parts from current models of ŠKODA AUTO, inc. Attention was paid primarily on crack initiation, wrinkling and springback.