Design Method about Spherical Diaphragm Sealing of Tube Channel in High Pressure Heat Exchanger

2012 ◽  
Vol 538-541 ◽  
pp. 2164-2168
Author(s):  
Sun Yi Chen
Keyword(s):  
High Pressure ◽  
Heat Exchanger ◽  
Engineering Design ◽  
Design Method ◽  
Function Analysis ◽  
Arch Height ◽  
Design Technology ◽  
Engineering Structure ◽  
And Function ◽  
Tube Channel

Spherical diaphragm seal dish of tube channel open end in high pressure heat exchanger is a new engineering structure that used in petrochemical hydrogenation unit, and its design technology is not reported now. It is inconvenience to analyze each case by limited element method. Design method of formulas is proposed to calculate both radial offset displacement and its thickness of spherical diaphragm based on shell elasticity mechanics. Relation formulas are deduced about arch height, open end radius, offset displacement by geometry. Two presuppositions are deduced for spherical diaphragm successful to run according to technology theory and function analysis of seal dish structure, which can be used for engineering design.

Research of Modular Design in Disassembly

2014 ◽  
Vol 552 ◽  
pp. 70-75
Author(s):  
Hai Yu Liu
Keyword(s):  
Modular Design ◽  
Design Method ◽  
Function Analysis ◽  
Design Flow ◽  
Side Door ◽  
Stamping Die ◽  
Module Selection ◽  
Pass Through ◽  
And Function ◽  
Whole Life Cycle

Design for disassembly in in the whole life cycle of products focused on product disassembly and as the goal; modular design has to face the module and function analysis for main feature, can pass through the module selection and combination of rapid formation of product series. The detachable design and modular design methods combined, AHP is introduced, put forward to face the removable modular design method and analyzes its design flow. Finally, to large lorry bottom side door of stamping die for example and analysis.

Structure and function analysis of a CC-NBS-LRR protein AT1G12290

2021 ◽  
Vol 534 ◽  
pp. 206-211
Author(s):  
Jianzhong Huang ◽  
Xiaoqiu Wu ◽  
Kaiting Sun ◽  
Zhiyong Gao
Keyword(s):  
Function Analysis ◽  
Structure And Function ◽  
And Function ◽  
Lrr Protein

Characterization of diacylglycerol acyltransferase 2 from Idesia polycarpa and function analysis

2021 ◽  
Vol 234 ◽  
pp. 105023
Author(s):  
Ruishen Fan ◽  
Gui Cai ◽  
Xuanyuan Zhou ◽  
Yuxin Qiao ◽  
Jiabao Wang ◽  
...  
Keyword(s):  
Function Analysis ◽  
Diacylglycerol Acyltransferase ◽  
And Function

scholarly journals Molecular characterization and function analysis of the rice OsDUF617 family

2021 ◽  
Vol 35 (1) ◽  
pp. 862-872
Author(s):  
Chunliu Li ◽  
Dejia Hou ◽  
Lin Zhang ◽  
Xiaohong Li ◽  
Jiangbo Fan ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Function Analysis ◽  
And Function

Design of Cooling Towers by the Effectiveness-NTU Method

1989 ◽  
Vol 111 (4) ◽  
pp. 837-843 ◽  
Author(s):  
H. Jaber ◽  
R. L. Webb
Keyword(s):  
Heat Exchanger ◽  
Cooling Tower ◽  
Design Method ◽  
Design Methods ◽  
Parallel Flow ◽  
Basic Method ◽  
Cooling Towers ◽  
Flow Configuration ◽  
Heat Exchanger Design

This paper develops the effectiveness-NTU design method for cooling towers. The definitions for effectiveness and NTU are totally consistent with the fundamental definitions used in heat exchanger design. Sample calculations are presented for counter and crossflow cooling towers. Using the proper definitions, a person competent in heat exchanger design can easily use the same basic method to design a cooling tower of counter, cross, or parallel flow configuration. The problems associated with the curvature of the saturated air enthalpy line are also treated. A “one-increment” design ignores the effect of this curvature. Increased precision can be obtained by dividing the cooling range into two or more increments. The standard effectiveness-NTU method is then used for each of the increments. Calculations are presented to define the error associated with different numbers of increments. This defines the number of increments required to attain a desired degree of precision. The authors also summarize the LMED method introduced by Berman, and show that this is totally consistent with the effectiveness-NTU method. Hence, using proper and consistent terms, heat exchanger designers are shown how to use either the standard LMED or effectiveness-NTU design methods to design cooling towers.

scholarly journals Proposal of Design Method Enabling Cr-Mo Steels to be Used in High-Pressure Hydrogen Gas Environment

Hyomen Kagaku ◽  
2015 ◽  
Vol 36 (11) ◽  
pp. 562-567
Author(s):  
Hisao MATSUNAGA ◽  
Junichiro YAMABE ◽  
Saburo MATSUOKA
Keyword(s):  
High Pressure ◽  
Design Method ◽  
Hydrogen Gas ◽  
Gas Environment ◽  
Pressure Hydrogen
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