scholarly journals THERMAL SCHEME NITROZOPENTACYANOFERRATE OF IRON (II) WITH COMPLEX CATHIONES

2019 ◽  
Vol 2 (1) ◽  
pp. 15-21
Author(s):  
L. P. Oliynyk ◽  
◽  
N. L. Bernatska ◽  
Z. M. Komarenska ◽  
O. I. Makota ◽  
...  
Keyword(s):  
Thermal Scheme

scholarly journals FACTOR ANALYSIS OF THE THERMAL SCHEME OF CHP WITH SUPER CRITICAL STEAM CYCLE ON THE BASIS OF EXERGY METHOD

2021 ◽  
pp. 46-55
Author(s):  
Victoria Tarasova
Keyword(s):  
Factor Analysis ◽  
Power Plant ◽  
Exergy Analysis ◽  
Exergetic Efficiency ◽  
Supercritical Steam Parameters ◽  
One Stage ◽  
Steam Parameters ◽  
The Impact ◽  
Thermal Scheme ◽  
Steam Cycle

The most promising direction of CHP modernization is the introduction of power units on supercritical steam parameters. Increasing steam parameters is one of the most effective ways to increase the efficiency of a CHP plant. Thus, the development of the concept of thermal schemes turbines for supercritical steam parameters, taking into account the characteristics of their operation at the existing CHP Ukraine is an actual scientific problem. The solution to this problem will make it possible to replace or modernize the power generating equipment that has exhausted its resource with modern power units that meet world economic and environmental standards. The method of exergy analysis is adapted to the study of thermal schemes of CHP plants with supercritical steam cycle. As an example of application of a method the exergy analysis of the power plant working on the one-stage thermal scheme is carried out. Within the framework of the proposed method, a thermodynamic and topology-exergetic model of the power plant is created. Based on the topology-exergetic model the indicators of thermodynamic efficiency of the power plant operating on supercritical parameters of steam are determined. It is proposed to apply the theory of experiment planning in exergy analysis of the thermal circuit of a CHP. With the involvement of this theory, a multifactor numerical experiment was conducted to determine the impact on the exergetic efficiency of the thermal scheme of CHP of the main determining variable factors, such as adiabatic and thermal efficiency of the plant, as well as the operating parameters. The generalized equation of functional interrelation of exergetic efficiency of system and exergetic efficiency of elements of thermal scheme of CHP is received. The proposed equation can be used as a tool for further training of neural networks and their application both in the design and in the diagnosis of energy efficiency of CHP. According to the results of the factor analysis, a rather high conservatism of the considered one-stage scheme of CHP to the change of the varied parameters was revealed. This indicates the presence of more rigid structural links between the elements, which is generally a positive aspect of the reconstruction.

scholarly journals Study of the work and efficiency improvement of combined-cycle gas turbine plants

2019 ◽  
Vol 124 ◽  
pp. 05061 ◽  
Author(s):  
D.I. Mendeleev ◽  
Yu Ya Galitskii ◽  
G.E. Marin ◽  
A.R. Akhmetshin
Keyword(s):  
Gas Turbine ◽  
Combined Cycle ◽  
Efficiency Improvement ◽  
Absorption Refrigeration ◽  
Temperature Changes ◽  
Ambient Temperatures ◽  
Combined Cycle Plant ◽  
Load Schedule ◽  
Thermal Scheme ◽  
Refrigeration Machine

The purpose of the paper is to study and analyze the possibility of increasing the power output of a combined-cycle gas turbine (CCGT) unit during the period of positive ambient temperatures. The first task is to analyze the operation of a 110 MW combined-cycle power unit at various ambient temperatures and to obtain alterations in the main CCGT characteristics when the ambient temperature changes. The other task is to study the usage of an absorption refrigeration machine in a CCGT cycle to increase its energy efficiency. Calculations of the thermal scheme of a gas turbine were carried out using mathematical modeling, the steam turbine was calculated based on guidelines. The conducted studies allow to conclude that the use of an absorption refrigeration machine in the cycle of a combined-cycle plant can improve the efficiency of the unit, increasing profits from power generation, and reducing penalties for non-compliance with the load schedule.

Development of a thermal scheme for a cogeneration combined-cycle unit with an SVBR-100 reactor

2017 ◽  
Vol 64 (2) ◽  
pp. 97-103 ◽  
Author(s):  
V. F. Kasilov ◽  
A. A. Dudolin ◽  
S. M. Krasheninnikov
Keyword(s):  
Combined Cycle ◽  
Thermal Scheme

The program of calculation of temperature in knots of the thermal scheme

2014 ◽  
Author(s):  
Н.В. Горячев ◽  
С.А. Бростилов ◽  
И.М. Рыбаков ◽  
В.А. Трусов ◽  
Н.К. Юрков ◽  
...  
Keyword(s):  
Thermal Scheme

scholarly journals Numerical Analysis of the Temperature Field in Luminaires

10.14311/550 ◽  
2004 ◽  
Vol 44 (2) ◽  
Author(s):  
J. Murín ◽  
M. Kropáč ◽  
R. Fric
Keyword(s):  
Finite Element Method ◽  
Thermal Analysis ◽  
Finite Element ◽  
Temperature Field ◽  
Numerical Analysis ◽  
Thermal Field ◽  
Heat Sources ◽  
The Finite Element Method ◽  
Thermal Scheme ◽  
Element Method

This paper contains a calculation of the thermal field caused by electro-heat in lighting devices. After specifying the heat sources, a thermal analysis is make using the finite element method and the equivalent thermal scheme method. The calculated results have been verified experimentally.

scholarly journals Matrix formalization of power plant thermal scheme calculation

Vestnik IGEU ◽  
2018 ◽  
pp. 66-72 ◽  
Author(s):  
A.E. Barochkin ◽  
◽  
V.P. Zhukov ◽  
E.V. Barochkin ◽  
G.V. Ledukhovsky ◽  
...  
Keyword(s):  
Power Plant ◽  
Thermal Scheme
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