Сучасне уявлення змісту діяльності будівельно-інжинірингових фірм

Formally-analytical and organizational bases of positioning of building-engineering firms are expounded at the building market. Advantages of change of functions of the indicated firms are well-proven in an investment process - from functions exceptionally engineering to new quality - general contractor of new type responsible to the investor for the intermediate and final results of introduction of building project.У статті викладено формально-аналітичні та організаційні основи позиціонування будівельно-інжинірингових фірм на будівельному ринку. Доведено переваги зміни функцій зазначених фірм в інвестиційному процес - від функцій виключно інжинірингу до нової якості – генерального підрядника нового типу, що відповідає перед  інвестором за проміжні та підсумкові результати впровадження будівельного проекту

ANALYSIS OF THE ENERGY SYSTEM BALANCE EFFICIENCY PROVIDED WITH THE DIFFERENT GROUPS OF GENERATING PLANTS

Currently methods of efficiency analysis are being developed and applied, based on optimization tasks for various types and modes. Usually, the optimization criterion for these objectives is efficiency that can be calculated in various ways, for which there is no concurrent views. The target function based on minimization of given cost that allows comparing options with the same useful effect is used to search for the best indicators of power plants operated within the system. Marginal costs on the amount of difference in the useful effect are introduced to the target function in case of various useful effects. The criterion of selecting the best power plant from an economic point of view is the difference between the reduced costs of the considered and the basic options, but this approach does not allow using the results for long-term projections. Such approach depends on the situation and does not reflect the real costs. The value of the target function to optimize the effectiveness of the technical-economic method is not "marginal" and does not allow assessing the impact of various processes on the overall option efficiency. Therefore, the development of the efficiency criterion that considers the changing needs of the energy system is relevant for analyzing the power plant

DEVELOPMENT OF THE METHOD OF DETERMINING THE TARGET FUNCTION OF OPTIMIZATION OF POWER PLANT

It has been proposed the application of an optimization criterion based on properties of target functions, taken from the elements of technical, economic and thermodynamic analyses. Marginal costs indicators of energy for different energy products have also been identified. Target function of the power plant optimization was proposed, that considers energy expenditure in the presented plant and in plants closing the energy sources generation and consumption balance.</p