Указываются основные факторы и некоторые не решенные проблемы, ограничивающие применения в теплоэнергетике кавитационных генераторов тепла. Предложен метод расчета на стадии разработки тепловой мощности таких генераторов, учитывающий все известные механизмы теплообразования при кавитации. Рассматривается разработанный авторами кавитационный теплогенератор-гидротаран повышенной мощности, предназначенный для генерации и транспортировки горячей воды.

В работе рассмотрено простое устройство для генерации и транспортировки теплой воды, принцип действия которого основан на использовании гидравлического удара и кавитации жидкости при торможении. Данное устройство–теплогенератор-гидротаран приводится в действие кинетической энергией движущегося потока воды. Описана работа устройства, сделаны расчеты скорости потока при кавитации, температуры, давления и выделяемого количества тепла при разрушении кавитационных пузырей. Предложен метод расчета тепловой мощности кавитационного теплогенератора. Расмотрена работа теплосети с теплогенератором. Предложено использовать теплогенераторы-гидротараны на реках с быстрым течением, где достигается наибольшее энергосбережение.

In this work the thermal-physical model of the starved spots in the honeycomb sandwich detection process was considered. The given model experimental verification in optimal test mode was provided

In this work the thermal-physical model of the starved spots in the honeycomb sandwich detection process was considered. The given model experimental verification in optimal test mode was provided

Рассматривается возможность использования для нагревания воды теплоты конденсации, получаемой из пара при низкой температуре, и кинетической энергии кавитационных пузырьков воздуха и пара в момент их разрушения. Приведены результаты теоретического обоснования механизмов получения тепла, блок-схема и принцип работы теплогенератора. Генератор тепла не требует сжигания топлива, поэтому не загрязняет окружающую среду и, по предварительным оценкам, имеет высокую энергоэффективность.

Thermal non-destructive testing (TNDT) is one of the well-known and dynamically developing in the world methods of controlling the quality of materials and goods. TNDT is based on the registration of temperature fields, which are generated on the surface of tested objects in result of their forced heating (this direction is called the active thermal test) or in result of its functioning (this direction is called thermography). Research & technical centre "Thermocontrol" deals with thermal non-destructive test and thermography more than 30 years. The Centre is certified by National Cosmic Agency of Ukraine (NCAU) No. 000084 for the right to carrying out works in the area of space technology. Two specialists of the 3rd TNDT level are certified by ISO version.

The VHF and UHF are being increasingly filled up, on a large scale, with radio electronic facilities and communication systems, primarily with mobile ones. This aggravates the electromagnetic situation and renders the EMC problem more challenging. Under these circumstances it becomes imperative to seek for fresh possibilities of solving the above issue. These possibilities are to be looked for in numerous frequency-territorial diversities and other physical parameters with regard to real physical and geographical conditions. These approaches are based on the techniques for analyzing the EMC and the RWP models which are incorporated into these procedures.

A method of solving the inverse problem of active thermal inspection is discussed; the method can be used to obtain a relation in analytical form between the parameters of a flaw and the measured temperature response of the testpiece to a given heat input. It is shown that four flaw parameters can be determined: the opening, the depth in the testpiece, the thermal diffusivity, and the thermal conductivity.

The method of reducing the strength of the effect of the emitting interference based on increasing the nonlinearity of the transformation function of the infrared receiver of a radiometer bu shortening its spectrum range is examined. It is shown that the sensitivity of inspection can be greatly increased by selecting the upper boundary of the spectrum range.

The authors consider questions of active thermal nondestructive testing of thermal insulation materials with the use of the domestic TV-03 thermal camera. The quality of vacuumpower insulation using a Temet thermos bottle is inspected. The types of possible defects characteristic of these parts were established and the possibility of optimizing the conditions of active thermal nondestructive testing was investigated. On the basis of the results obtained, the effectiveness of the use of the method for inspection of the quality of vacuum-powder thermal insulation was shown and recommendations on selection of the conditions and means of inspection were developed.