scholarly journals DEVELOPMENT OF THE COMBINED RESERVOIR OF MIXTURE OF TECHNICAL COMBUSTIBLE LIQUIDS AS COMPONENT OF ENVIRONMENT PROTECTION TECHNOLOGY

2021 ◽  
pp. 28-40
Author(s):  
Olexandr Kondratenko ◽  
Volodymyr Koloskov ◽  
Yelyzaveta Kapinos ◽  
Oleksandra Tkachenko ◽  
Mykhajlo Repetenko
Keyword(s):  
High Pressure ◽  
Wall Material ◽  
Reciprocating Compressor ◽  
Environment Protection ◽  
Large Reservoir ◽  
Oil Storage ◽  
Protection Technology ◽  
Pressure Storage ◽  
Intermediate Cooling ◽  
Combustible Liquids

In this study the development, analysis and description of the sche­me of environment protection technology for the oil storage were carried out. The proposed scheme is provided for the utilization of vapors of technical combustible liquids stored at the enterprise, namely diesel fuel, gasoline and motor oil, formed during the manifestation of the phenomena of small and large reservoir breathing in significant quantities. Set of initial data and the mass hour­ly emission of such vapors into the en­vironment were obtained according to an improved approach. Development of a high-pressure storage reser­voir for such vapors as the executive device of environmental protection technology for the oil storage according to an improved approach was carried out. Parameters of the reciprocating compressor, which distills the mixture of such vapors from the low-pressure storage reservoir to the high-pressure sto­rage reservoir, compressing them, was selected. Calculation of the reservoir wall thickness ba­sed on the theory of strength of closed solid shells was carried out taking into account the mechanical properties of the wall material, namely steel 60, and the value of the pressure of the gaseous fluid in it. Magnitudes of weight of the deve­loped reservoir and the cost of materials for its manufacture were determinated. Design of a combined reservoir for the ac­cu­mu­lation of a volley of a mixture of such vapors with a system of intermediate cooling of the mixture after its compression by a reciprocating compressor and the pos­sibility of heating the condensate in the reservoir was de­ve­loped.

Topology Optimization Design of High Pressure Storage Tank Structure

2012 ◽  
Vol 430-432 ◽  
pp. 828-833
Author(s):  
Qiu Sheng Ma ◽  
Yi Cai ◽  
Dong Xing Tian
Keyword(s):  
Finite Element ◽  
High Pressure ◽  
Topology Optimization ◽  
Storage Tank ◽  
Optimization Design ◽  
Influence Factors ◽  
Element Model ◽  
Design Variables ◽  
Calculation Results ◽  
Pressure Storage

In this paper, based on ANSYS the topology optimization design for high pressure storage tank was studied by the means of the finite element structural analysis and optimization. the finite element model for optimization design was established. The design variables influence factors and rules on the optimization results are summarized. according to the calculation results the optimal design result for tank is determined considering the manufacturing and processing. The calculation results show that the method is effective in optimization design and provide the basis to further design high pressure tank.

Five years on: monitoring of Long Island Point’s Western Port wastewater discharge

2017 ◽  
Vol 57 (1) ◽  
pp. 10
Author(s):  
Melanie Bok ◽  
Scott Chidgey ◽  
Peter Crockett
Keyword(s):  
Long Island ◽  
Marine Ecosystem ◽  
Environmental Indicators ◽  
Treated Wastewater ◽  
Far Field ◽  
Mixing Zone ◽  
Environment Protection ◽  
Wastewater Discharge ◽  
Oil Storage ◽  
Environmental Objectives

The Esso Long Island Point facility is situated on the edge of Western Port, an important Ramsar designated wetland for migratory birds in Victoria, Australia. The gas fractionation and crude oil storage facility has operated for over 40 years and has discharged treated wastewater to Western Port for most of these years in accordance with its environmental regulatory licence. The 2003 State Environment Protection Policy for Waters of Western Port is the Victorian Environment Protection Authority’s regulatory framework for licensing wastewater discharges to the wetland, and among other items, requires that discharges must cause no ‘detrimental change in the environmental quality of the receiving waters’ or ‘chronic impacts outside any declared mixing zone’. A major upgrade to the water treatment facility in 2010 included a risk-based marine ecosystem program to monitor key environmental indicators including water quality, jetty pile invertebrate communities and seagrass condition. The program’s longer-term monitoring record has allowed assessment of potential chronic effects on invertebrates and seagrass by comparing temporal changes at monitoring sites over the period from pre-operations (2010) to present (2016) and spatial changes between near-field to far-field sites, kilometres from the discharge point. The program has shown that management of the discharge maintains beneficial uses and environmental objectives at the boundary of the mixing zone, and the marine ecosystem is protected from potentially slower and longer-term adverse effects in the far-field. The program demonstrates that the treated wastewater discharge has had no adverse impact on key environmental indicators in Western Port over the longer-term study period.

Method to optimize high-pressure, multicomponent gas mixing

1976 ◽  
Vol 41 (6) ◽  
pp. 960-963 ◽  
Author(s):  
R. Scacci
Keyword(s):  
High Pressure ◽  
Gas Mixture ◽  
Gas Mixing ◽  
Arbitrary Size ◽  
Multicomponent Gas ◽  
Pressure Storage ◽  
Multicomponent Gas Mixture

By use of the equations derived herein, a method is outlined to determine the optimum filing sequence and to obtain the maximum possible pressure when two or more pure high-pressure gases are to be transferred to a receiver cylinder in order to prepare a multicomponent gas mixture. The method is valid for any number of gas components, originating from high-pressure storage cyclinders of arbitrary size and pressure and for a receiver cylinder to contain initially one or more of the component gases. Percentage concentrations within 1% of desired are easily obtained with this method.

Efficiency enhancement in a meso-Wankel compressor with overflow

2011 ◽  
Vol 226 (6) ◽  
pp. 1550-1567
Author(s):  
Y L Zhang ◽  
W Wang
Keyword(s):  
High Pressure ◽  
Cooling Capacity ◽  
Energy Utilization ◽  
Utilization Efficiency ◽  
Environment Protection ◽  
Efficiency Enhancement ◽  
Major Focus ◽  
Relative Deviation ◽  
Compressor Performance ◽  
High Level

Given current environment protection problems, improvement of energy utilization efficiency is a major focus of compressor research. The presence of high-pressure gas in the clearance volume has an important effect on the efficiency of a Wankel compressor. Overflow pertains to the method that fully utilizes the high-pressure gas in the clearance volume. This method is used in this study, and its effect on the performance of a Wankel compressor is analysed by theoretical and simulation analyses. Compressor performance remains at a high level when the ratio of overflow recess volume to the clearance volume is approximately 2 per cent according to this study. Cooling capacity is improved by about 28 per cent compared with the Wankel compressor without overflow, and the relative deviation between the theoretical and the simulation results is kept within reasonable bounds.

Changes in K Value and Microorganisms of Tilapia Fillet during Storage at High-Pressure, Normal Temperature

2001 ◽  
Vol 64 (1) ◽  
pp. 94-98 ◽  
Author(s):  
WEN-CHING KO ◽  
KUO-CHIANG HSU
Keyword(s):  
High Pressure ◽  
Normal Condition ◽  
Initial Level ◽  
Psychrophilic Bacteria ◽  
K Value ◽  
C Storage ◽  
Plate Counts ◽  
Pressure Storage ◽  
Tilapia Fillets

This study determined the effect of high-pressure, normal temperature (25°C) storage on tilapia fillets. After pressurization, the fillets were stored at normal condition (1 atm [1 atm = 101.29 kPa] and 25°C) for 12 h to evaluate the changes of microbes and K value. The fillets stored at 2,000 atm for 12 h still kept the K value, a freshness index that represents putrefaction with the value beyond 60%, still below 40%, and the K value of the meat without pressurization was up to 92%. Total plate counts of the fillets stored at below 1,000 atm for 12 h were maintained at the value of 4.7 log CFU/g of meat, which was similar to the initial level. However, the counts were obviously decreased to about 2.0 log CFU/g of meat for the fillets stored at above 2,000 atm. The same effect was obtained for psychrophilic bacteria. Enzymes and microbes reactivated apparently after 12 h of normal condition storage of mild pressurized fillets. The study demonstrates that high-pressure storage can inhibit the putrefaction of tilapia meat but no longer after that.

scholarly journals A Review on Advanced Manufacturing for Hydrogen Storage Applications

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8513
Author(s):  
Zach Free ◽  
Maya Hernandez ◽  
Mustafa Mashal ◽  
Kunal Mondal
Keyword(s):  
High Pressure ◽  
Hydrogen Storage ◽  
Hydrogen Adsorption ◽  
Cryogenic Liquid ◽  
Advanced Manufacturing ◽  
Energy Applications ◽  
Research Findings ◽  
Pressure Storage ◽  
Manufacturing Techniques

Hydrogen is a notoriously difficult substance to store yet has endless energy applications. Thus, the study of long-term hydrogen storage, and high-pressure bulk hydrogen storage have been the subject of much research in the last several years. To create a research path forward, it is important to know what research has already been done, and what is already known about hydrogen storage. In this review, several approaches to hydrogen storage are addressed, including high-pressure storage, cryogenic liquid hydrogen storage, and metal hydride absorption. Challenges and advantages are offered based on reported research findings. Since the project looks closely at advanced manufacturing, techniques for the same are outlined as well. There are seven main categories into which most rapid prototyping styles fall. Each is briefly explained and illustrated as well as some generally accepted advantages and drawbacks to each style. An overview of hydrogen adsorption on metal hydrides, carbon fibers, and carbon nanotubes are presented. The hydrogen storage capacities of these materials are discussed as well as the differing conditions in which the adsorption was performed under. Concepts regarding storage shape and materials accompanied by smaller-scale advanced manufacturing options for hydrogen storage are also presented.

Continued Study on the Effect of Mean Stress on Ground Storage Vessels for Hydrogen Fueling

2020 ◽  
Author(s):  
Daniel T. Peters ◽  
Myles Parr
Keyword(s):  
High Pressure ◽  
Pressure Vessels ◽  
Life Assessment ◽  
Gaseous Fuels ◽  
Division 1 ◽  
Section Viii ◽  
Pressure Storage ◽  
Cyclic Service ◽  
The Impact ◽  
Division 2

Abstract The use of high pressure vessels for the purpose of storing gaseous fuels for land based transportation application is becoming common. Fuels such as natural gas and hydrogen are currently being stored at high pressure for use in fueling stations. This paper will investigate the use of various levels of autofrettage in high pressure storage cylinders and its effects on the life of a vessel used for hydrogen storage. Unlike many high-pressure vessels, the life is controlled by fatigue when cycled between a high pressure near the design pressure and a lower pressure due to the emptying of the content of the vessels. There are many misunderstandings regarding the need for cyclic life assessment in storage vessels and the impact that hydrogen has on that life. Some manufacturers are currently producing vessels using ASME Section VIII Division 1 to avoid the requirements for evaluation of cylinders in cyclic service. There are currently rules being considered in all of ASME Section VIII Division 1 and Division 2, and even potentially for Appendix 8 of ASME Section X. Recommendations on updating the ASME codes will be considered in this report.

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