Про ефективність термохімічної регенерації тепла в газотурбінних установках мобільних енергокомплексів

Scheme for modern ship power gas turbine plants is considered. The feasibility of applying to such ships gas turbines plants together with thermodynamic and thermochemical regeneration.Рассмотрены схемы современных мобильных энергетических комплексов на примере судов с электродвижением. Проанализированы условия применения в составе таких комплексов газотурбинных установок с совместной термодинамической и термохимической регенерацией. Розглянуто схеми сучасних мобільних енергетичних комплексів на прикладі суден з електрорухом. Проаналізовані умови використання в складі таких комплексів газотурбінних установок з загальною термодинамічною та термохімічною регенерацією

Енергетичні та масогабаритні показники газотурбінних установок з проміжним рідким металічним теплоносієм

Complex gas turbine power plants without water-steam waste-heat loops are considered. It has been proved that the use of the heat-exchanger with intermediate coolant in the complex circle gas turbine provides a challenging efficiency mobile energy systems.Рассмотрены газотурбинные установки сложных циклов без пароводяних утилизационных контуров. Показано, что применение теплообменных аппаратов с промежуточным жидкометаллическим теплоносителем в составе газотурбинных установок сложных циклов обеспечивает повышение эффективности мобильных энергетических комплексов. Розглянуто газотурбінні установки складних циклів без пароводяних утилізаційних контурів. Показано, що застосування теплообмінних апаратів з проміжним рыдкометалевим теплоносієм у складі газотурбінних установок складних циклів забезпечує покращення ефективності мобільних енергетичних комплексів

Investigation of the Combustion Processes in the Gas Turbine Module of an FPSO Operating on Associated Gas Conversion Products

In this paper, we consider the issue of thermo-chemical heat recovery of waste heat from gas turbine engines for the steam conversion of associated gas for offshore vessels. Current trends in the development of offshore infrastructure are identified, and the composition of power plants for mobile offshore drilling units and FPSO vessels is analyzed. We present the results of a comparison of power-to-volume ratio, power-to-weight ratio and efficiency for diesel and gas turbine power modules of various capacities. Mathematical modeling methods are used to analyze the parameters of an alternative gas turbine unit based on steam conversion of the associated gas, and the estimated efficiency of the energy module is shown to be 50%. In the modeling of the burning processes, the UGT 25000 serial low emission combustor is considered, and a detailed analysis of the processes in the combustor is presented, based on the application of a 35-reaction chemical mechanism. We confirm the possibility of efficient combustion of associated gas steam conversion products with different compositions, and establish that stable operation of the gas turbine combustor is possible when using fuels with low calorific values in the range 7–8 MJ/kg. It is found that the emissions of NOx and CO during operation of a gas turbine engine on the associated gas conversion products are within acceptable limits

Towards Collaborative Business Intelligent Framework: Crowdsourcing Approach

International audienceCollaborative Business Intelligence goes beyond the organization frame and collecting people in one virtual space in order to give their opinion concerning certain issue results in an opportunity to boost the decision-making process and make it more reasonable. Strangers solve one problem without direct interaction and use the developed results. Tourists often search for information from different sources and compare found facts. It takes a lot of time and effort. So, having an application, where users could find relevant information and use it for decisionmaking is essential. The aim of the paper is to develop an application for tourists using which they could make a decision about where and why to go. We propose an approach to collect and clear data related to tourism, preprocess and structure tourism data convenient interface and tools for collaborative analysis

Thermoelastic equation of state of boron subphosphide B12P2B_{12}P_{2}

Compressibility of boron subphosphide B$_{12}$P$_2$ has been studied under quasi-hydrostatic conditions up to 26 GPa and 2600 K using laser-heated diamond anvil cell and angle-dispersive synchrotron X-ray diffraction. 300-K data fit yields the values of bulk modulus B$_0$ = 192(11) GPa and its first pressure derivative B$_0$′ = 5.5(12). It has been found that at ambient pressure the thermal expansion is quasi-linear up to 1300 K with average volume expansion coefficient $\alpha$ = 17.4(1) × 10$^{−6}$ K$^{−1}$. The whole set of experimental p–V–T data is well described by the Anderson-Grüneisen model with $δ_T$ = 6

Investigation of the Combustion Processes in the Gas Turbine Module of an FPSO Operating on Associated Gas Conversion Products

In this paper, we consider the issue of thermo-chemical heat recovery of waste heat from gas turbine engines for the steam conversion of associated gas for offshore vessels. Current trends in the development of offshore infrastructure are identified, and the composition of power plants for mobile offshore drilling units and FPSO vessels is analyzed. We present the results of a comparison of power-to-volume ratio, power-to-weight ratio and efficiency for diesel and gas turbine power modules of various capacities. Mathematical modeling methods are used to analyze the parameters of an alternative gas turbine unit based on steam conversion of the associated gas, and the estimated efficiency of the energy module is shown to be 50%. In the modeling of the burning processes, the UGT 25000 serial low emission combustor is considered, and a detailed analysis of the processes in the combustor is presented, based on the application of a 35-reaction chemical mechanism. We confirm the possibility of efficient combustion of associated gas steam conversion products with different compositions, and establish that stable operation of the gas turbine combustor is possible when using fuels with low calorific values in the range 7–8 MJ/kg. It is found that the emissions of NOx and CO during operation of a gas turbine engine on the associated gas conversion products are within acceptable limits

Application of Thermo-chemical Technologies for Conversion of Associated Gas in Diesel-Gas Turbine Installations for Oil and Gas Floating Units

The paper considers the issue of thermo-chemical recovery of engine’s waste heat and its further use for steam conversion of the associated gas for oil and gas floating units. The characteristics of the associated gas are presented, and problems of its application in dual-fuel medium-speed internal combustion engines are discussed. Various variants of combined diesel-gas turbine power plant with thermo-chemical heat recovery are analyzed. The heat of the gas turbine engine exhaust gas is utilized in a thermo-chemical reactor and a steam generator. The engines operate on synthesis gas, which is obtained as a result of steam conversion of the associated gas. Criteria for evaluating the effectiveness of the developed schemes are proposed. The results of mathematical modeling of processes in a 14.1 MW diesel-gas turbine power plant with waste heat recovery are presented. The effect of the steam/associated gas ratio on the efficiency criteria is analyzed. The obtained results indicate relatively high effectiveness of the scheme with separate high and low pressure thermo-chemical reactors for producing fuel gas for both gas turbine and internal combustion engines. The calculated efficiency of such a power plant for considered input parameters is 45.6%

Modern aspects of the e-learning usage in the field of physical culture

Purpose: actualize the introduction of e-learning to motivate students to engage in movement activity. Material & Methods: method of generalization and analysis are selected, which was used to study the approaches, definitions and results of the study among different authors on the research topic. Results: generalized and analyzed: approaches to the formation of motivation in students for movement activity; definition of e-learning; results of the introduction of e-learning in the educational process of students from different authors. Conclusion: it is proved that the approaches of different authors on motivating students to movement activity do not include the use of modern e-learning tools; it is established that e-learning can be an excellent complement to the full-time form of education; directions for further scientific research are updated

Application of Thermo-chemical Technologies for Conversion of Associated Gas in Diesel-Gas Turbine Installations for Oil and Gas Floating Units

The paper considers the issue of thermo-chemical recovery of engine’s waste heat and its further use for steam conversion of the associated gas for oil and gas floating units. The characteristics of the associated gas are presented, and problems of its application in dual-fuel medium-speed internal combustion engines are discussed. Various variants of combined diesel-gas turbine power plant with thermo-chemical heat recovery are analyzed. The heat of the gas turbine engine exhaust gas is utilized in a thermo-chemical reactor and a steam generator. The engines operate on synthesis gas, which is obtained as a result of steam conversion of the associated gas. Criteria for evaluating the effectiveness of the developed schemes are proposed. The results of mathematical modeling of processes in a 14.1 MW diesel-gas turbine power plant with waste heat recovery are presented. The effect of the steam/associated gas ratio on the efficiency criteria is analyzed. The obtained results indicate relatively high effectiveness of the scheme with separate high and low pressure thermo-chemical reactors for producing fuel gas for both gas turbine and internal combustion engines. The calculated efficiency of such a power plant for considered input parameters is 45.6%