Energy and energy efficiency

Extruded aluminum heat pipes are the subject of the development, simulation, and experimental study; and solar collector with applied Ukrainian made extruded aluminum heat pipes is the object of the development. The aim of the development consists in the creation of the principally original domestic solar collector design, where highly efficient heat absorber made of aluminum heat pipes with selective coating is used…

The equalizations of thermal balance for the system «space vehicle – device – thermal control system – space environment» for a thermosensitive device taking into account heat transmission , realized by heat pipes, are theoretically grounded. On the basis of analysis of these equalizations for the boundary conditions of device function a new thermal conception of construction of the effective thermal control system of class of scientific devices, which have not own heat generation is offered and experimentally researched.

The fact of the matter. In work was analyzed the gas turbine technology “Aquarius” and it flow diagram for working at different fossil fuel and renewable energy sources. At the same time such construction made possibility for high efficiency cogeneration work.

The analysis of results of works, which were carried out on the problem of oxidation and self-ignition of coal for improving accuracy of the program of investigation of coal self-ignition, was carried out.

The design of flat-oval profile steel tubes with the incomplete fins is investigated for use as heat transfer surfaces. Such surfaces have several important advantages: the material - carbon steel, manufacture of low-cost technology – contact welding of the fins on the tube; improved thermal efficiency as compared with steel tubes of round profile, aerodynamic drag of flat-oval tubes with incomplete fins for 40...50 % below the tube of round profile.

The essence of development is to provide scientific and technical support of industrial production in Ukraine of world level EHV cables, which are not produced in CIS countries. The recommendations and technical solutions to optimization of new technology of cable production with solid polymer insulation for voltages up to 330 kV have been developed, in particular it has been developed new methods of optimization technology of insulation covering on the moving conductor and its nano-structural vulcanization in inclined type chamber. New methods are based on the development of:

Automatic control systems heat power processes which function in changing modes are object of research. New methods of creation, algorithms and structures of control systems which are created with usage of a principle of changing of structure, parameter optimization, search algorithms, operative correction of control actions, and also algorithms which allow to consider existing restrictions on controlling and controlled signals are a development.

This work discusses about a techniques, algorithms and software systems for diagnosis and management of energy steam boilers. Have been developed the diagnostic model of control of the intensity of service life and postoperative diagnostics of the most heat-stressed elements of steam boilers in the form of a software layout and investigated its characteristics. Have been developed the technique and algorithms for optimization of boilers, depending on the factors of reliability and efficiency.

Study and analysis of existing information enabled the development of the construction of a new steel tube equal developed helical type for use as a heat transfer surface air heaters-regenerators for gas compressor units, which are used in compressor stations Ukrainian gas transport system. This surface has several advantages: production with cheaper technology – roller burnishing of circular tube with granular material or liquid for making backpressure inside the tube.