scholarly journals Manufacturing technologies and joining methods of metallic thin-walled pipes for use in high pressure cooling systems

2021 ◽  
Author(s):  
Sophie A. M. McNair ◽  
Alborz Shokrani Chaharsooghi ◽  
Mauro Carnevale ◽  
Andrew Rhead ◽  
Antti Onnela ◽  
...  
Keyword(s):  
High Pressure ◽  
High Energy Physics ◽  
Cooling System ◽  
Small Diameter ◽  
High Energy ◽  
Outer Diameter ◽  
Cooling Systems ◽  
Tracking Detector ◽  
Thin Walled ◽  
Manufacturing Technologies

AbstractSmall diameter thin-walled pipes, typically with a diameter less than 20 mm and a ratio of outer diameter to wall thickness is 20 or above, have increasingly become a key value adding factor for a number of industries including medical applications, electronics and chemical industries. In high-energy physics experiments, thin-walled pipes are needed in tracking detector cooling systems where the mass of all components needs to be minimised for physics measurement reasons. The pipework must reliably withstand the cooling fluid operation pressures (of up to 100 bar), but must also be able to be reliably and easily joined within the cooling system. Suitable standard and/or commercial solutions combining the needed low mass and reliable high-pressure operation are poorly available. The following review of literature compares the various techniques that exist for the manufacture and joining of thin-walled pipes, both well-established techniques and novel methods which have potential to increase the use of thin-walled pipes within industrial cooling systems. Gaps in knowledge have been identified, along with further research directions. Operational challenges and key considerations which have to be identified when designing a system which uses thin-walled pipes are also discussed.

Very light tracking detector for jet target experiment in high energy physics

1989 ◽  
Vol 36 (1) ◽  
pp. 54-57 ◽  
Author(s):  
R. Calabrese ◽  
V. Carassiti ◽  
P. Dalpiaz ◽  
P.F. Dalpaiz ◽  
E. Luppi ◽  
...  
Keyword(s):  
High Energy Physics ◽  
High Energy ◽  
Tracking Detector ◽  
Target Experiment ◽  
Energy Physics

scholarly journals Status and Future of the CMS Tracker DCS

2020 ◽  
Vol 245 ◽  
pp. 01005
Author(s):  
Wassef Karimeh ◽  
Maroun Chammoun ◽  
Ivan Shvetsov ◽  
Andromachi Tsirou ◽  
Piero Giorgio Verdini
Keyword(s):  
High Energy Physics ◽  
High Energy ◽  
Environmental Data ◽  
Software Components ◽  
Cms Experiment ◽  
Tracking Detector ◽  
Safe State ◽  
Software Product ◽  
Efficient Control ◽  
Energy Physics

Detector Control Systems (DCS) for modern High-Energy Physics (HEP) experiments are based on complex distributed (and often redundant) hardware and software implementing real-time operational procedures meant to ensure that the detector is always in a safe state, thus maximizing the lifetime of the detector. Display, archival and often analysis of the environmental data are also part of the tasks assigned to DCS systems. The CMS Tracker Control System (TCS) is a resilient system that has been designed to safely operate the silicon tracking detector in the CMS experiment. It has been built on top of an industrial Supervisory Control and Data Acquisition (SCADA) software product WinCC OA extended with a framework developed at CERN, JCOP, along with CMS and Tracker specific components. The TCS is at present undergoing major architecture redesign which is critical to ensure efficient control of the detector and its future upgrades for the next fifteen years period. In this paper, we will present an overview of the Tracker DCS and the architecture of the software components as well as the associated deliverables.

A Review of Cooling Systems in Electric/Hybrid Vehicles

2010 ◽  
Author(s):  
Wamei Lin ◽  
Bengt Sunde´n
Keyword(s):  
Power Efficiency ◽  
Cooling System ◽  
High Energy ◽  
Hybrid Vehicles ◽  
Electronic Equipment ◽  
Great Promise ◽  
Cooling Systems ◽  
System A ◽  
Green Power ◽  
Motor Cooling

Due to increasing oil demand and serious global warming, a green power generation system is urgently requested in transportation. Electric/hybrid vehicles (EV/HEV) have been considered as a potential solution with great promise in achieving high energy/power efficiency and a low environmental impact. The important electric and electronic equipment in EV/HEV are the battery, inverter and motor. However, because of the high power density in the inverters or the low working temperature of batteries, the cooling problems affect significantly the working performance or the lifetime of electric and electronic equipment in EV/HEV. This paper views different cooling systems including the battery cooling system, inverter cooling system and motor cooling system. A general introduction to the EV/HEV and the electric and electronic equipment working processes are briefly presented at first. Then different methods for the battery cooling system, the inverter cooling system and the motor cooling system are outlined and discussed in this paper. Among other things, the means of using phase change material, or electro-thermal modules are significant for the battery cooling system. Finally, some conclusions or recommendations are presented for the cooling systems, in order to promote the EV/HEV development.

scholarly journals A PCM based cooling system for office buildings: a state of the art review

2019 ◽  
Vol 111 ◽  
pp. 01026
Author(s):  
Evdoxia Paroutoglou ◽  
Alireza Afshari ◽  
Niels Chr. Bergsøe ◽  
Peter Fojan ◽  
Göran Hultmark
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Thermal Comfort ◽  
Energy Use ◽  
State Of The Art ◽  
Cooling System ◽  
Renewable Energy Sources ◽  
Ventilation System ◽  
High Energy ◽  
Cooling Systems

Cooling of air in buildings has a significant effect on thermal comfort and, consequently, productivity of office occupants. This study presents a state of the art review of energy efficient cooling systems that will provide occupants in buildings with satisfying thermal comfort. Using high-temperature cooling systems combined with renewable energy sources increases the energy efficiency in buildings. Latent heat thermal energy storage (LHTES) using Phase Change Materials (PCM) is a renewable energy source implemented in space cooling applications due to its high energy storage density. Since the share of commercial buildings in need of cooling is increasing, there is a need for developing new technical solutions in order to reduce the energy use without compromising thermal comfort. To this end, a proposed ventilation system, preliminarily analyzed in this paper, is expected to reduce further the energy use. The ventilation system is composed of an air handling unit, a 2-pipe active chilled beam system, and a cooling system including a LHTES using PCM. Few researchers have investigated chilled water air-conditioning systems that integrate a LHTES using PCM. In this review, function characteristics, possibilities and limitations of existing systems are discussed.

Design and Calculation of Cooling System to Eliminate Non-Uniform Heat Transfer on Concentration PV System (CPV)

2012 ◽  
Vol 608-609 ◽  
pp. 143-150 ◽  
Author(s):  
Qi Fen Li ◽  
Tao Li ◽  
Cui Cui Pan ◽  
Zhi Tian Zhou ◽  
Wei Dong Sun
Keyword(s):  
Heat Transfer ◽  
Heat Pipe ◽  
Optimization Design ◽  
High Efficiency ◽  
Cooling System ◽  
High Energy ◽  
Photovoltaic System ◽  
System Structure ◽  
Flow Density ◽  
Cooling Systems

With characteristics of rapid start-up, small heat resistance，uniform temperature and strong heat transfer ability, heat pipe has been used as a facility in cooling system of concentration photovoltaic system. Through numerical calculation and analysis, heat transfer characteristics of the cooling systems are carried out in this paper. Focusing on research of conventional rectangular fin and small fin fixed on cooling systems, and the heat pipe radiator that may adopted, the high-efficiency cooling system and method which are matched with the requirement of high energy flow density and notuniformity temperature are discussed. Finally, optimization design of the cooling system structure is suggested in the paper.

Experimental Study on the Nozzle of High-Pressure Fog Cooling Systems in Greenhouses

2012 ◽  
Vol 516-517 ◽  
pp. 289-292
Author(s):  
De Ling Zhao ◽  
Xiao Hou Shao
Keyword(s):  
Experimental Study ◽  
High Pressure ◽  
Cooling System ◽  
Experimental Studies ◽  
Experimental Results ◽  
Operating Pressure ◽  
Cooling Systems ◽  
Droplet Sizes ◽  
Pump Pressure

This paper describes a designed new nozzle and provides experimental studies on the nozzle used in high-pressure fog cooling system in Greenhouses. Fogging droplet sizes of the nozzle is measured by MPA Malvern Particle Analyzer. The diameter of droplet sizes (VMD, Dv10, Dv50, Dv90) which is 500 mm far from the nozzle is measured and analyzed when the pump pressure is 2, 3, 4, 5, 6,7MPa.The experimental results shows: the nozzle has fine fogging performance, and its droplet sizes (VMD) are small and less than 30 microns when operating pressure is more than 5MPa.

Experimental Investigation of Two Competitive High Pressure Turbine Blade Cooling Systems

2017 ◽  
Author(s):  
Sergiy Risnyk ◽  
Andriy Artushenko ◽  
Igor Kravchenko ◽  
Sergii Borys
Keyword(s):  
High Pressure ◽  
Turbine Blade ◽  
Film Cooling ◽  
Cooling System ◽  
Turbine Blades ◽  
Turbine Rotor ◽  
High Pressure Turbine ◽  
Cooling Systems ◽  
Turbine Blade Cooling ◽  
Blade Cooling

Aeroengine high-pressure turbine (HPT) is the key engine component. HPT blade must withstand high inlet temperatures and mechanical loads providing the necessary level of the efficiency. To achieve these objectives effective and complex blade cooling systems (internal convective and film cooling) are used in the HPT design. The objective of this project is to design and investigate the aeroengine HPT blade cooling system that is able to withstand the blade inlet gas temperature level of approx. 1900K but with the minimal cooling airflow amount. HPT blade of the aeroengine with unducted fan (UDF) was taken as a baseline design, namely, the monocrystal blade with a convective multipass system and the film cooling. Advanced HPT blade inter-wall cooling system was designed, investigated and compared with the typical baseline HPT blade. In the advanced HPT blade inter-wall cooling system special types and structure of cooling channels are used. Both types of cooling systems were investigated experimentally in the turbine rotor of the high temperature core engine. Measurements of turbine blades temperatures were performed using crystal temperature sensors (CTS). HPT blades with two competitive cooling systems incorporated with CTS (0,2–0,3 mm size) were installed in the turbine rotor of the core engine and tested on the engine Maximal rate. After tests and the engine disassembly CTSs were extracted and the characteristics of the CTS crystal lattice were transcribed in temperature values. Thermal state of both two competitive cooling systems was validated by experimental data. Numerical and experimental results obtained in the research of HPT blade cooling system are presented in the article. Aeroengine high pressure turbine blade cooling systems designs are described.

Use of Plastic Optical Fibers for Charged Particle Tracking in High Energy Physics

1994 ◽  
Vol 348 ◽  
Author(s):  
Mitchell R. Wayne
Keyword(s):  
Optical Fibers ◽  
High Energy Physics ◽  
High Energy ◽  
Current Status ◽  
Development Effort ◽  
Detector Performance ◽  
Tracking Detector ◽  
Plastic Optical Fibers ◽  
Charged Particle Tracking ◽  
Energy Physics

ABSTRACTA large tracking detector consisting of scintillating plastic optical fibers has been chosen by the D0 collaboration as a part of a planned upgrade at the Fermilab Tevatron. The tracker will utilize a state of the art photodetector known as the Visible Light Photon Counter. The benefits of fiber tracking in high energy physics will be presented along with recent progress in several key areas, including: optimization of scintillating dyes and light yields, fiber construction, fiber ribbon manufacture and placement, optical transmission and photodetection. The current status of the D0 development effort will be outlined, including results from the characterization of 5000 channels of VLPC. Finally, results from simulations of expected detector performance will be shown and discussed.

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