Research of Slag Accumulation Reduced by Hydrogen in Circulation Circuits with Lead-Containing Heat Carriers

2021 ◽  
Vol 68 (11) ◽  
pp. 848-855
Author(s):  
V. V. Ul’yanov ◽  
M. M. Koshelev ◽  
Yu. A. Teplyakov
Keyword(s):  
2018 ◽  
Vol 2 (5) ◽  
Author(s):  
Aleandro Antidormi ◽  
Xavier Cartoixà ◽  
Luciano Colombo

1981 ◽  
Vol 11 (6) ◽  
pp. 796-798 ◽  
Author(s):  
V V Apollonov ◽  
P I Bystrov ◽  
Yu A Broval'skiĭ ◽  
V F Goncharov ◽  
A M Prokhorov

Author(s):  
М.Э. Ахмедов ◽  
А.Ф. Демирова ◽  
Г.И. Касьянов ◽  
Ю.Ф. Росляков ◽  
М.М. Рахманова

Разработаны новые режимы стерилизации компота из груш в стеклотаре СКО 1-82-1000 с использованием высокотемпературных скоростных теплоносителей. Получена математическая модель расчета продолжительности процесса стерилизации в зависимости от параметров теплоносителя. Для получения математической модели использован метод математического планирования эксперимента. Предложен технологический прием ускоренной стерилизации компота из груш в стеклобанке объемом 1 дм3. Разработаны новые режимы тепловой обработки (стерилизации) компота из груш в стеклобанке 1-82-1000 при различных параметрах горячего воздуха и разных начальных температурах продукта, °С: 70, 80, 85 и 90. Наименьшая продолжительность процесса тепловой стерилизации достигнута при скорости теплоносителя 7,5 м/с при начальной температуре продукта 90°С. New modes of sterilization of compote from pears in glass containers of SKO 1-82-1000 using high-temperature high-speed heat carriers have been developed. A mathematical model for calculating the duration of the sterilization process depending on the parameters of the heat carrier is obtained. To obtain a mathematical model, we used the method of mathematical planning of the experiment. A technological method for accelerated sterilization of pear compote in a glass jar with a volume of 1 dm3 is proposed. The research made it possible to develop new modes of heat treatment (sterilization) of compote from pears in a glass jar 1-82-1000 at different parameters of hot air and different initial temperatures of the product, °C: 70, 80, 85 and 90. The shortest duration of the thermal sterilization process is achieved at the heat transfer fluid speed of 7,5 m/s at the initial product temperature of 90°C.


Clay Minerals ◽  
2018 ◽  
Vol 53 (2) ◽  
pp. 255-269 ◽  
Author(s):  
Vasily Moraru

ABSTRACTIn an automated installation powered by direct current (DC), the boiling curves and heat-transfer-coefficient (HTC) dependencies on the superheat values (ΔT) under free convection conditions for the water nanodispersions of clay minerals – illite, montmorillonite, palygorskite and genetic mixtures of the latter two – were obtained. The effects of some factors on pool boiling heat transfer were also studied.A significant influence of the shape and anisotropy of nanoparticles (NPs) on the heat-transfer parameters of nanofluids (NFs) was detected. A significant critical heat flux (CHF) enhancement (up to 200–300%) at boiling of the nanofluids studied was established, which is due to nanoparticle deposition on the heater surface during nanofluid boiling. The structure of the nanomaterials deposited is important in the enhancement of heat transfer at boiling of nanofluids and in avoiding boiling crises.The present study showed the effectiveness of clay-mineral nanofluids for extra emergency cooling of overheated surfaces of powerful equipment in the event of the sudden onset of a boiling crisis.


2018 ◽  
Vol 769 ◽  
pp. 371-376 ◽  
Author(s):  
Elena Alexandrovna Muravyova ◽  
Alexander Ivanovich Kubryak

The article describes the development of a mathematical model for a condenser-evaporator, which occupies a central position in chlorine liquefaction process. The model describes the key processes in the equipment unit: freon evaporation, chlorine condensation, change in freon level and in equipment pressure. The model is based on the equations characterizing the processes mentioned above, which makes it possible to use the model for design and calculations of non-contact heat transfer equipment with phase transitions of heat carriers of various characteristics. The simulation was carried out with the aim of further development of a condenser-evaporator control system.


2020 ◽  
Vol 22 (5) ◽  
pp. 3058-3065 ◽  
Author(s):  
Tian Zhou ◽  
Zhuhong Li ◽  
Yajuan Cheng ◽  
Yuxiang Ni ◽  
Sebastian Volz ◽  
...  

Heat carriers in amorphous organic materials can be categorized into low frequency propagon and high frequency diffuson, which can partly convert to each other with the variation of pressure.


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