Refrigerating systems and heat pumps. System flow diagrams and piping and instrument diagrams. Layout and symbols

2015 ◽  
Keyword(s):  
Heat Pumps ◽  
System Flow ◽  
Flow Diagrams

scholarly journals SEPARATION OF MIXTURES By COMBINING RECTIFICATION AND FRACTIONAL CRySTALLIZATION PROCESSES

2017 ◽  
Vol 12 (3) ◽  
pp. 44-51 ◽  
Author(s):  
G. A. Nosov ◽  
M. V. Mikhailov ◽  
A. I. Absattarov
Keyword(s):  
Fractional Crystallization ◽  
Initial Mixture ◽  
Heat Pumps ◽  
Coupled Processes ◽  
Closed Type ◽  
Flow Diagrams ◽  
Separation Of Mixtures ◽  
Separation Parameters ◽  
Effect Of The Composition

Various options of separation of binary mixtures by combining the processes of fractional crystallization and rectification are considered. The base mixture, depending on its composition, can be initially directed to the rectification stage or to one of the stages of separated components crystallization using the proposed variants. The flow diagrams of integrated heat exchanging systems and schemes involving open and closed type heat pumps under consideration for the determination of ways of reducing energy consumption of the coupled processes were suggested. These solutions enable improving the processes energy efficiency. In addition, the analysis of the effect of the composition and temperature of the initial mixture, the temperature of fractionation at the crystallization stage, the composition of distillates and bottom products on the separation parameters was carried out. It was found that when the initial mixture is fed to the stage of crystallization of one of the components, the energy costs for carrying out the process under consideration are usually lower than when the initial mixture is fed to the rectification stage. It is shown that using a combination of fractional crystallization and rectification processes can significantly expand the possible separation range and improve the technical and economic characteristics of the separation process.

The Research of the Second Class Credit in the Credit System

2014 ◽  
Vol 989-994 ◽  
pp. 5209-5212
Author(s):  
Shuang Liang Yao ◽  
Shuang Tong Wang
Keyword(s):  
Sql Server ◽  
Campus Network ◽  
Credit System ◽  
Development Environment ◽  
Credit Reporting ◽  
High Security ◽  
Sql Database ◽  
System Flow ◽  
Sql Server Database ◽  
Flow Diagrams

In order to solve the problem of the second class credit reporting in manual states, we use the system flow diagrams and case diagrams to analysis the needs of users, and use ER diagrams to introduce the SQL database。This article designs the system of the second class credit reporting based on the campus network. The system uses C # as the development language, SQL Server database as a background and Microsoft Visual Studio 2010 as the development environment, with high security and stability.

HEAT PUMPS FOR MOLTEN SALT ENERGY STORAGE

2017 ◽  
Author(s):  
M. Ramos Gonzalez ◽  
William Culbreth
Keyword(s):  
Energy Storage ◽  
Molten Salt ◽  
Heat Pumps
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