HEAT TRANSFER INTENSITY AS THE FACTOR DETERMINING CHARACTERISTICS OF THERMOACOUSTIC HEAT MACHINE
Abstract
The article discusses the ways of thermoacoustic heat engines (TAHE) usage. The prospects of their application for low-temperature heat resources, provides an overview of the existing theoretical models. Heat transfer in TAHE is the only mechanism for supply of heat to the working fluid and the conversion of thermal energy into mechanical work. It is shown that these models do not consider the process of supplying thermal energy to the working fluid and do not consider the existing mechanisms of heat transfer between TAHE elements. Methods of optimization thermodynamics (OT) can eliminate these disadvantages and take into account the features of heat transfer in pulsating flows. With these approaches, the factors determining the effectiveness of a thermoacoustic engine (TAE) are analyzed. This approach made it possible to obtain an explicit dependence linking the main characteristics of the TAE with heat exchangers characteristics. Article shows a direct impact on the intensity of heat transfer characteristics on the external TAHE characteristics. The article analyzes the results of experimental TAE studies. Using the approaches of OT authors determine the ways of future research.
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