This article concerns a global world problem of the mankind – energy problem. One of the possible ways of solution is utilization of compressed gases energy using installations based on a jet-reactive turbine in different branches of industry. This work is dedicated to software application when processing calculation procedure on different turbine operation modes and comparison with the results of the experimental researches.

The need for power measurement transmitted by the running shaft has led to the need for using devices for measuring torque on the shaft. Of particular importance is the power measurement on high-speed machines, wherein some cases conventional measurement systems are either unsuitable or have low accuracy. Currently, data measuring systems are widely used in the researches of turbomachines. They allow to receive, process, transmit, store and display measurement data. Their application is relevant in relation to the priority of experimental study and subsequent modeling of characteristics and performance factors of expansion machines. The purpose of this research is a design and generation of the data measuring system for measuring torque on the running shaft of vortex expansion machines using a non-contact torsional dynamometer (strain-gauge clutch). The research has considered the results of the development of data measuring system, performed a theoretical analysis and presented the results of the practical application of the non-contact strain-gauge dynamometer designed for torque measurement on the shaft of low-power expansion machines when operating under bench test conditions. Has dealt with the problems of development, calibration. Keywords: data measuring system, torque, coupling, resistive-strain sensor, vortex expansion machine.

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АННОТАЦИЯ S. VANYEYEV, D. MIROSHNYCHENKO DEFINING THE FIELDS FOR THE RATIONAL APPLICATION OF EDDY EXPANSION TURBOMACHINES BY USING CRITERION SYSTEMS ABSTRACT Low-power (up to 500 kW) expansion turbomachines (ETM) and the units based on them are frequently used for the solution of ecology and energy-saving problems to increase the reliability and the technological effectiveness of the equipment. When developing low-power units we face the problems related to a decrease in the efficiency of classic expansion turbomachines. Today, the market offers comparatively new low flow-rate eddy expansion turbomachines and as a result we have to define the fields for their rational application and their advantages in comparison with analogous options. This scientific paper defines the criterion systems for the comparative analysis of the performances of low flow-rate low-power ETM of a different type. The experimental data of investigation of the flow channels of eddy expansion machines with the external peripheral channel were analyzed and the relationships between the criterion systems used for eddy ETM were obtained and the fields for their rational application, in particular to develop low-power (up