In this work, experimental data are presented that allows one to estimate the relative amount of heat release. It also provides the opportunity to state the general tendency of its change over time for patients with various individual characteristics of the organism. An important indicator of safety and effectiveness of cryotherapy is the temperature of the skin surface Tk, which should not fall below -2 °C during exposure. It is also planned to propose a method for studying the dynamics of Tk and heat flux from the human body using a thermoelectric module (TEM). The paper evaluates the experimental data on the TEM current changes during and after cryotherapy. Also, dynamics assessment of heat flow during cryotherapy is given and the possibility of evaluating Tk will be shown. It is planned to get an overall picture of the process of heat exchange of the measuring device with the skin of the test object. The results allow us to make recommendations regarding the duration and intensity of cryotherapy.

No abstract

Анализ влияния криотерапии на различные толщины кожного покрова с использованием численного моделирования Д. ЕРЕЖЕП 1 , А. Ф. МИНИКАЕВ 2 , Е. В. СОКОЛОВА 3 , д-р техн. наук В. А. ПРОНИН 4 1 darhan_13@corp.ifmo.ru, 2 artyr_minikaev@mail.ru, 3 evlogvinenko@corp.ifmo.ru, 4 maior.pronin@mail.ru Университет ИТМО Рассматривается метод измерения температуры покровных тканей человека во время общего криотерапевтического воздействия (WBC). Исследованы физические процессы, в устройстве для криотерапевтического воздействия на организм человека (криосауна). Компьютерная модель объекта исследования построена с использованием методом конечных элементов, в пробной версии программного продукта Comsol Multiphysic. Математическая модель позволяет рассчитать температуру покровных тканей во время процедуры WBC и по ее окончанию. Изучена зависимость интенсивности потерь теплоты от толщины покровных тканей. Использован модуль Bioheat Transfer, что позволило учитывать тепловое влияние. Сформулированы рекомендации по выбору режимов криосауна. Исследования направлены на повышение эффективности и безопасности WBC за счет индивидуальных характеристик пациентов. Ключевые слова: моделирование, тепловой поток, температура, криосауна, криотерапевтический эффект, WBC. Информация о статье:Поступила

The subject of our research is a scroll compressor. With its large number of advantages over reciprocating compressors in the form of overall, mass and production characteristics, they have their own difficulties associated with the theory of stability of a movable scroll during the operation process. As you know, a complex system of forces acts on the spiral, is very variable in magnitude and direction, for the period of one orbital revolution of the spiral. It should be noted that in modern designs of scroll compressors in the axial direction, a movable scroll has most often a one-sided rigid support - a thrust bearing. Moving the movable spiral in the opposite direction is limited only by the force of the gas axial pressure, which does not guarantee it saving its original position, at least within the gaps, touching the movable and stationary spirals, which is unacceptable. Next, we consider the basic calculation equations associated with the stability of a moving spiral.

In this paper, a method for measuring the temperature of the integumentary tissues of a person during a general cryotherapy treatment (WBC) is considered. The authors investigated the physical processes in the device for cryotherapeutic effects on the human body (cryosauna). Also we constructed the computer model of the object of study, using the finite element method. The mathematical model allows you to calculate the temperature of the integumentary tissue during the WBC procedure and at its end. The dependence of the intensity of heat loss on the thickness of the covering tissues was studied. The Bioheat Transfer module was used, which allowed taking into account thermal effects. Recommendations on the choice of cryosauna modes are formulated. Research aims to improve the efficacy and safety of WBC due to the individual characteristics of patients.