Cooling System Design of Ion Nitriding and PCVD Composite Treatment Furnace

2013 ◽  
Vol 448-453 ◽  
pp. 3462-3466
Author(s):  
Z.J. Zuo ◽  
Si Bi ◽  
L.R. Fu ◽  
Z.Q. Weng ◽  
S.H. Peng
Keyword(s):  
System Design ◽  
Cooling System ◽  
Plasma Nitriding ◽  
Water System ◽  
Cooling Water ◽  
Vacuum System ◽  
Vacuum Furnace ◽  
Ion Nitriding ◽  
Precise Calculation ◽  
Nitriding Furnace

Keywords: ion nitriding furnace cooling system vacuum system Abstract. About fuction of vacuum plasma nitriding furnace cooling system, and its design and calculation of main parts, in particular control of water consumption. The cooling water system have been set into the water flowing through the four heat shield, and gradually take the heat, then the coolant out by outlet pipe. Cooling water flows through layers of insulation to varying degrees of cooling, to ensure that each level of temperature, precise calculation of water flow can only be guaranteed to ensure the maximum water savings and cooling the furnace down. This article provide the basis for vacuum furnace cooling system design in the future.

scholarly journals Research and Analysis of Cooling System for Diesel Locomotive

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Wenbin Qiu
Keyword(s):  
System Design ◽  
Heat Dissipation ◽  
Cooling System ◽  
Design Method ◽  
High Reliability ◽  
Water System ◽  
Cooling Water ◽  
Diesel Locomotive ◽  
System Pressure ◽  
Conventional Cooling

With the continuous development of diesel locomotives in the direction of single power, the heat dissipation ofthe locomotive cooling system is getting bigger and bigger, and its performance directly affects the economy andreliability of the locomotive. Due to the limitation of locomotive axle load and structural space size, there is a greattechnical problem between the cooling system design and the arrangement of the cooling device and the overalllayout of the locomotive. The increase in the number of radiators, making the number of cooling system processesare correspondingly increased, resulting in locomotive cooling system water resistance and water system pressure aregreatly improved. The traditional cooling system form and the radiator structure are diffi cult to meet the developmentrequirements of high power locomotive. Based on the conventional cooling system design method, a multi-processradiator is proposed. The multi-process cooling system has the advantages of high cooling effi ciency, simple structure,small auxiliary power consumption of the pump and high reliability of the cooling system components. In this paper,the cooling system and its function, the existing cooling technology and the multi-process radiator are studied andanalyzed, and the three-process radiator and the single-process radiator are tested and compared. In this paper, a newmulti-process radiator structure scheme is proposed for the design requirements of CKD9 diesel locomotive coolingsystem. The program eff ectively uses the radiator cooling water and cooling air temperature diff erence, to achieve thepurpose of increasing heat dissipation.

Vacuum System Design of Ion Nitriding and PCVD Composite Treatment Furnace

2013 ◽  
Vol 448-453 ◽  
pp. 3467-3471
Author(s):  
Zhi Jiang Zuo ◽  
Si Bi ◽  
L.R. Fu ◽  
Z.Q. Weng ◽  
S.H. Peng
Keyword(s):  
Heat Treatment ◽  
System Design ◽  
Vacuum Pump ◽  
Vacuum System ◽  
Ion Nitriding ◽  
Heat Treatment Furnace ◽  
Treatment Furnace ◽  
Booster Pump

Keywords: Ion Nitriding Vacuum System PCVDAbstract. Vacuum system design is an important part of the heat treatment furnace. In this paper, the vacuum system of ion nitriding and PCVD composite treatment furnace is advanced a complete and thorough design and calculation to select a vacuum system that is composed of mechanical booster pump and a mechanical vacuum pump, which is also called roots vaccum pumps—mechanical vacuum pumps.

ITER Tokamak Cooling Water System Design Status

2019 ◽  
Vol 75 (8) ◽  
pp. 841-848 ◽  
Author(s):  
Donato Lioce ◽  
Sergio Orlandi ◽  
Moustafa Moteleb ◽  
Andrea Ciampichetti ◽  
Lionel Afzali ◽  
...  
Keyword(s):  
System Design ◽  
Water System ◽  
Cooling Water ◽  
Cooling Water System

Using Catalyst and Electrolysis Diaphragm Method to Produce Multiple Oxidants to Remove the Scaling and Slime in Cooling System

2008 ◽  
Vol 47-50 ◽  
pp. 339-342
Author(s):  
Kuo Shan Yao ◽  
Chen Yu Chang ◽  
Ta Chih Cheng ◽  
Yung Hsu Hsieh ◽  
Shi Ren Weng
Keyword(s):  
Chlorine Dioxide ◽  
High Efficiency ◽  
Ph Value ◽  
Cooling System ◽  
Water System ◽  
Cooling Water ◽  
Magnesium Carbonate ◽  
Pipeline System ◽  
Circulating Water ◽  
Multiple Oxidants

Increasing cycle of water circulation in industrial cooling water system caused accumulation of dissolving materials in circulating water. Subsequently, the problems including scaling, fouling, corrosion and slime occurred. The multiple oxidants including chlorine dioxide, ozone, peroxide hydrogen, and chlorine were prepared using diaphragm electrolysis method to alleviate the problems above in the cooling system. Meanwhile multiple oxidants can also inhibit the accumulation of biological dirt and erosion effectively. The efficiency of multiple oxidants to inhibit precipitation of magnesium carbonate and calcium carbonate can be increased by adjustment of pH value in the whole pipeline system to reduce corrosion rate of the pipeline and to achieve energy-water saving goal. The results showed that the high efficiency of chlorine dioxide mixture was an excellent bio-corrosion inhibitor and bio-accumulation bactericide. The residue concentration of mixture oxidants are at the range of 0.05 ~ 0.25 mg ClO2/L that is high enough to restrain the growth of micro-organisms.

Cooling water system design

2001 ◽  
Vol 56 (12) ◽  
pp. 3641-3658 ◽  
Author(s):  
Jin-Kuk Kim ◽  
Robin Smith
Keyword(s):  
System Design ◽  
Water System ◽  
Cooling Water ◽  
Cooling Water System

scholarly journals Heuristic Framework for Sustainable Cooling Water Systems Operations in Oil Facilities

2021 ◽  
Vol 15 ◽  
pp. 1-16
Author(s):  
Mustafa Hashim ◽  
Mimi Haryani Hassim ◽  
Denny KS Ng ◽  
Denny KS Ng
Keyword(s):  
High Efficiency ◽  
Cooling System ◽  
Water System ◽  
Cooling Water ◽  
Water Systems ◽  
Design Stage ◽  
Project Schedule ◽  
Residential Areas ◽  
Oil Companies ◽  
Cooling Water System

To meet the growing demand for cleaner environment from the society, most leading oil companies have committed to preserve environment via reduction of greenhouse gases, water and soil pollution as well as the use of natural resources. In most of the oil facilities, they required massive cooling systems to cool down process streams in order to meet the process requirements. The most common cooling system in oil facilities is evaporative cooling water system (ECWS) as such system has high efficiency. Cooling water is commonly used in offices and residential areas. However, the cooling water system is one of the utility systems that generates high environmental impacts due to high consumption of power, water and chemicals. Therefore, it is important to optimize the system in the early design stage of the project to operate in the most effective and efficient condition. In reality, many efforts may be missed out due to loose project definition, inexperience design engineer, hectic project schedule, or resource constraint. Therefore, in order to overcome the previous limitations, this paper presents a comprehensive heuristic improvement framework for cooling water systems in oil operating facilities.

Thermal Hydraulic and Safety Assessment of First Wall Helium Cooling System of a Generalized Test Blanket System in ITER Using RELAP/SCDAPSIM/MOD4.0 Code

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
S. P. Saraswat ◽  
P. Munshi ◽  
A. Khanna ◽  
C. Allison
Keyword(s):  
Safety Assessment ◽  
Cooling System ◽  
Water System ◽  
Cooling Water ◽  
Heat Removal ◽  
Point Of View ◽  
Critical Parameters ◽  
Vacuum Vessel ◽  
First Wall ◽  
Safety Margins

The key objective of the test blanket module (TBM) program is to develop the design technology for DEMO and future power-producing fusion reactors. The proposed first wall of the test blanket system (TBS) is a generalized concept for testing in ITER, an experimental fusion reactor under construction in France presently. The first wall of TBM (TBM FW) directly faces the plasma and is cooled by the first wall helium cooling system (FWHCS), which is considered as a critical component from an ITER safety point of view. The scope of this work comprises thermal hydraulic analysis of the FWHCS of a generalized TBS and the assessment of postulated initiating events (PIEs) on the ITER safety with the help of thermal-hydraulic code RELAP/SCDAPSIM/MOD4.0. The three reference accidents: in-vacuum vessel (VV) loss of coolant accident (in-vessel LOCA), ex-vessel LOCA, and loss of flow accident (LOFA) in FWHCS are selected for the safety assessment. This safety assessment addresses safety concerns resulting from FWHCS component failure, such as VV pressurization, TBM FW temperature profile, pressurization of port cell (PC) and Tokomak cooling water system vault annex (TCWS-VA), and passive decay heat removal capability. The analysis shows that the critical parameters are under the design limit and have large safety margins, in the investigated accident scenarios. A comparative analysis is also carried out with the previous results to validate the results.

Influence of the temperature of the cooling water on the deaeration capacity in the KСS-200-2 condenser

2020 ◽  
pp. 7-18
Author(s):  
A.D. Vodeniktov ◽  
◽  
N.D. Chihirova ◽  
Keyword(s):  
Dissolved Oxygen ◽  
Water Temperature ◽  
Steam Turbine ◽  
Cooling System ◽  
Cooling Water ◽  
Vacuum System ◽  
Water Cooling ◽  
Cooling Water Temperature ◽  
Surface Condenser ◽  
Steam Turbine Condenser

In this paper, the results of the steam turbine condenser tests showing the dependence of the dissolved oxygen concentration and the water cooling temperature are presented. The steam surface condenser with the water cooling system is considered as the first stage of deaeration in the feedwater system of a steam turbine. The aim of this work is trying to investigate and describe the influence of regime factors on the deaeration effect of the steam surface condenser. Regimes with the nominal flow of the steam in the surface condenser were chosen for the estimation. The tests were continuing for 6 months in the range of the temperature of cooling water from 1 to 25 оС. The vacuum system of the steam turbine had a high level of air leakages that decreasing the efficiency of the feedwater dearation. The results show the negative correlation between dissolved oxygen in feedwater and the cooling water temperature. The surge of the concentration of dissolved oxygen was found in the water temperature about 11оС.

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