Published in Thermal Engineering
AbstractThe influence of internal heat sources on temperature distribution during the operation of thermoelectric generators (TEG) is investigated. Taking into account various factors affecting the temperature regime, including internal heat sources, a multilevel model of a two-stream TEG has been developed, which allows one to calculate the temper...
Published in Thermal Engineering
AbstractThe study is devoted to the assessment of the thermodynamic efficiency of the hydrothermal carbonization (HTC) method to produce bio-coal from wet organic waste (biomass). The HTC method is a process of thermochemical conversion of biomass into solid biofuel (bio-coal) as a result of its heating up to 150–280°С in the presence of water. The...
Published in Thermal Engineering
AbstractThe potentialities of using ultrafiltration, nanofiltration, and reverse-osmosis membranes for removing organic compounds from water are considered. Experimental results obtained by the authors and the information taken from the literature characterizing the interaction between membranes and organic compounds contained in natural water are ...
Published in Thermal Engineering
AbstractThe possibility of using quartz sand as a filter material for mechanical filters in the schemes of preliminary water treatment in water treatment plants with coagulation and liming at thermal power plants is considered. Comparative experiments on filtering water through quartz sand at the laboratory bench of an operating thermal power plant...
Published in Thermal Engineering
Abstract—The article presents the results from studying methods and means for reducing the transfer of vibration and pressure pulsations from power installations through elastic vibration isolators of pipelines carrying liquids (cooling water, condensate, or petroleum products) by suppressing the vibration forces and pulsations of the medium by act...
Published in Thermal Engineering
AbstractBasic approaches are outlined to solving complex engineering problems arising in the design and operation of power units at nuclear power stations (NPS) and based on large-scale physical simulation of dynamic conditions and parameters of dynamics and structural strength of modern power facilities. A procedure for physical simulation of spec...
Published in Thermal Engineering
Abstract—A parametric method for designing the cross sections of axial turbine machinery blade airfoils is described. Analytical Bezier curves are used for representing the profile generatrices and the skeleton line. Their shapes are uniquely determined by a set of 13 parameters that are related to the turbine cascade’s aerodynamic and strength cha...
Published in Thermal Engineering
AbstractModern trends in technical reequipment of coal-fired thermal power stations (TPS) are analyzed by the example of the Verkhnetagil’skaya District Power Station (GRES), where obsolete coal-fired power units requiring replacement were in operation. This problem is specific for many Russian thermal power stations. Two alternatives of reequipmen...
Published in Thermal Engineering
Abstract—The performance efficiency of automated intelligent systems (AISs), which provide the managing personnel of electric power systems not only with systematically ordered information about the technical state of equipment and installations but also with recommendations on arranging their operation, maintenance, and repair, depends first of al...
Published in Thermal Engineering
AbstractEnergy losses caused by steam humidity are one of the main components of losses in the steps of nuclear power plants’ wet-steam turbines. The presence of moisture droplets in the flow part of the turbines also poses a serious danger due to erosion wear of their blades. Various separation systems remove part of the erosion-hazardous moisture...
