Cryogenics Impact Report
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9 Xenon Handling and Cryogenics
9 Xenon Handling and Cryogenics 9.1 Overview The Xe handling and cryogenics strategy of LZ derives strongly from the successful LUX program and takes maximum advantage of key technologies demonstrated there: chromatographic krypton removal, high-flow online purification, high-efficiency two-phase heat exchange, sensitive in situ monitoring of Xe purity, and thermosyphon cryogenics. In many cases, the primary technical challenge of the LZ implementation is how to best scale up from LUX. Two classes of impurities are of concern: electronegatives such as O2 and H2O that suppress charge and light transport in the TPC, and radioactive noble gases such as 85Kr, 39Ar, and 222Rn that create backgrounds that are not amenable to self-shielding. Both types of impurities may be found in the vendor- supplied Xe, and both may also be introduced into the detector during operations via outgassing and emanation. The purity goals are summarized in Table 9.1.1. We have three mitigation techniques to control these impurities. First, electronegatives are suppressed during operations by continuous circulation of the Xe in gaseous form through a hot (450 oC) zirconium getter. Gettering in the gas phase is made practical by a two-phase heat exchanger. A metal-diaphragm gas pump drives the circulation and the system is capable of purifying the entire Xe stockpile in 2.3 days. Second, the problematic radioactive species, 85Kr and 39Ar, which have relatively long half-lives (10.8 years and 269 years, respectively) and no supporting parents, can be removed from the vendor-supplied Xe prior to the start of operations. -
Cryogenics in Space
— 37 — Cryogenics in space Nicola RandoI Abstract Cryogenics plays a key role on board space-science missions, with a range of applications, mainly in the domain of astrophysics. Indeed a tremendous progress has been achieved over the last 20 years in cryogenics, with enhanced reliability and simpler operations, thus matching the needs of advanced focal-plane detectors and complex science instrumentation. In this article we provide an overview of recent applications of cryogenics in space, with specific emphasis on science missions. The overview includes an analysis of the impact of cryogenics on the spacecraft system design and of the main technical solutions presently adopted. Critical technology developments and programmatic aspects are also addressed, including specific needs of future science missions and lessons learnt from recent programmes. Introduction H. Kamerlingh-Onnes liquefied 4He for the first time in 1908 and discovered superconductivity in 1911. About 100 years after such achievements (Pobell 1996), cryogenics plays a key role on board space-science missions, providing the environ- ment required to perform highly sensitive measurements by suppressing the thermal background radiation and allowing advantage to be taken of the performance of cryogenic detectors. In the last 20 years several spacecraft have been equipped with cryogenic in- strumentation. Among such missions we should mention IRAS (launched in 1983), ESA’s ISO (launched in 1995) (Kessler et al 1996) and, more recently, NASA’s Spitzer (formerly SIRTF, launched in 2006) (Werner 2005) and the Japanese mis- sion Akari (IR astronomy mission launched in 2006) (Shibai 2007). New missions involving cryogenics are the ESA missions Planck (dedicated to the mapping of the cosmic background radiation) and Herschel (far infrared and sub-millimetre observatory), carrying instruments operating at temperatures of 0.1 K and 0.3 K, respectively (Crone et al 2006). -
Cryogenics – the Basics Or Pre-Basics Lesson 1 D
Cryogenics – The Basics or Pre-Basics Lesson 1 D. Kashy Version 3 Lesson 1 - Objectives • Look at common liquids and gases to get a feeling for their properties • Look at Nitrogen and Helium • Discuss Pressure and Temperature Scales • Learn more about different phases of these fluids • Become familiar with some cryogenic fluids properties Liquids – Water (a good reference) H2O density is 1 g/cc 10cm Total weight 1000g or 1kg (2.2lbs) Cube of water – volume 1000cc = 1 liter Liquids – Motor Oil 10cm 15W30 density is 0.9 g/cc Total weight 900g or 0.9 kg (2lbs) Cube of motor oil – volume 1000cc = 1 liter Density can and usually does change with temperature 15W30 Oil Properties Density Curve Density scale Viscosity scale Viscosity Curve Water density vs temperature What happens here? What happens here? Note: This plot is for SATURATED Water – Discussed soon Water and Ice Water Phase Diagram Temperature and Pressure scales • Fahrenheit: 32F water freezes 212 water boils (at atmospheric pressure) • Celsius: 0C water freezes and 100C water boils (again at atmospheric pressure) • Kelvin: 273.15 water freezes and 373.15 water boils (0K is absolute zero – All motion would stop even electrons around a nucleus) • psi (pounds per square in) one can reference absolute pressure or “gage” pressure (psia or psig) • 14.7psia is one Atmosphere • 0 Atmosphere is absolute vacuum, and 0psia and -14.7psig • Standard Temperature and Pressure (STP) is 20C (68F) and 1 atm Temperature Scales Gases– Air Air density is 1.2kg/m3 => NO Kidding! 100cm =1m Total weight -
Cryogenicscryogenics Forfor Particleparticle Acceleratorsaccelerators Ph
CryogenicsCryogenics forfor particleparticle acceleratorsaccelerators Ph. Lebrun CAS Course in General Accelerator Physics Divonne-les-Bains, 23-27 February 2009 Contents • Low temperatures and liquefied gases • Cryogenics in accelerators • Properties of fluids • Heat transfer & thermal insulation • Cryogenic distribution & cooling schemes • Refrigeration & liquefaction Contents • Low temperatures and liquefied gases ••• CryogenicsCryogenicsCryogenics ininin acceleratorsacceleratorsaccelerators ••• PropertiesPropertiesProperties ofofof fluidsfluidsfluids ••• HeatHeatHeat transfertransfertransfer &&& thermalthermalthermal insulationinsulationinsulation ••• CryogenicCryogenicCryogenic distributiondistributiondistribution &&& coolingcoolingcooling schemesschemesschemes ••• RefrigerationRefrigerationRefrigeration &&& liquefactionliquefactionliquefaction • cryogenics, that branch of physics which deals with the production of very low temperatures and their effects on matter Oxford English Dictionary 2nd edition, Oxford University Press (1989) • cryogenics, the science and technology of temperatures below 120 K New International Dictionary of Refrigeration 3rd edition, IIF-IIR Paris (1975) Characteristic temperatures of cryogens Triple point Normal boiling Critical Cryogen [K] point [K] point [K] Methane 90.7 111.6 190.5 Oxygen 54.4 90.2 154.6 Argon 83.8 87.3 150.9 Nitrogen 63.1 77.3 126.2 Neon 24.6 27.1 44.4 Hydrogen 13.8 20.4 33.2 Helium 2.2 (*) 4.2 5.2 (*): λ Point Densification, liquefaction & separation of gases LNG Rocket fuels LIN & LOX 130 000 m3 LNG carrier with double hull Ariane 5 25 t LHY, 130 t LOX Air separation by cryogenic distillation Up to 4500 t/day LOX What is a low temperature? • The entropy of a thermodynamical system in a macrostate corresponding to a multiplicity W of microstates is S = kB ln W • Adding reversibly heat dQ to the system results in a change of its entropy dS with a proportionality factor T T = dQ/dS ⇒ high temperature: heating produces small entropy change ⇒ low temperature: heating produces large entropy change L. -
Led by Organisations Including ABP, Dunbia, Tulip, Dawn Meats, WM Perry
Abattoir, Red Meat Slaughter And Primary Processing – Led by organisations including ABP, Dunbia, Tulip, Dawn Meats, W M Perry Ltd, C H Rowley Ltd, Peter Coates (Alrewas) Ltd, JA Jewett (Meat) Ltd, BW & JD Glaves & Sons Ltd, Euro Quality Lambs Ltd, A Wright & Son, Fowler Bros Ltd, C Brumpton Ltd Accountancy – Led by organisations including Baker Tilly, BDO, Costain, Dains, Deloitte, Government Finance Profession , Ernst & Young, Flemmings, Grant Thornton, Hall and Woodhouse, Harvey & Son, Hazlewoods LLP, Health Education East of England, Kingston Smith, KPMG, Lentells Chartered Accountants, London Borough of Barking and Dagenham, NHS Employers, PwC, Solid State Solutions and Warrington and Halton Hospital NHS Foundation Trust with the Association of Accounting Technicians (AAT), Association of Chartered Certified Accountants (ACCA), Chartered Institute of Management Accountants (CIMA), Chartered Institute of Public Finance and Accountancy (CIPFA) and the Institute of Chartered Accountants in England and Wales (ICAEW). Accountancy (Phase 4) – Led by organisations including Derby Hospitals NHS Foundation Trust, Selby Jones Ltd, Shapcotts, Skills for Health Academy (North West), Bibby Ship Management, Jackson Stephen LLP, HFMA, Civil Service, Spofforths LLP, Norse Commercial Services Ltd, Norbert Dentressangle, Charles Wells Limited, TaxAssist Accountants, Mazars, Armstrong Watson, MHA Bloomer Heaven. Actuarial – Led by organisations including Aon Hewitt, Barnett Waddingham, Grant Thornton, KPMG, Mercer, Munich Re, PwC and RSA with the Institute and Faculty of Actuaries. Adult Care – Led by organisations including Barchester Healthcare, Caretech Community Services, Creative Support, Hand in Hands, Hendra Health Care (Ludlow), Hertfordshire County Council, Housing and Care 21, Oxfordshire County Council, Progressive Care, Surrey County Council, West England Centre for Inclusive Living, Woodford Homecare. -
“Is Cryonics an Ethical Means of Life Extension?” Rebekah Cron University of Exeter 2014
1 “Is Cryonics an Ethical Means of Life Extension?” Rebekah Cron University of Exeter 2014 2 “We all know we must die. But that, say the immortalists, is no longer true… Science has progressed so far that we are morally bound to seek solutions, just as we would be morally bound to prevent a real tsunami if we knew how” - Bryan Appleyard 1 “The moral argument for cryonics is that it's wrong to discontinue care of an unconscious person when they can still be rescued. This is why people who fall unconscious are taken to hospital by ambulance, why they will be maintained for weeks in intensive care if necessary, and why they will still be cared for even if they don't fully awaken after that. It is a moral imperative to care for unconscious people as long as there remains reasonable hope for recovery.” - ALCOR 2 “How many cryonicists does it take to screw in a light bulb? …None – they just sit in the dark and wait for the technology to improve” 3 - Sterling Blake 1 Appleyard 2008. Page 22-23 2 Alcor.org: ‘Frequently Asked Questions’ 2014 3 Blake 1996. Page 72 3 Introduction Biologists have known for some time that certain organisms can survive for sustained time periods in what is essentially a death"like state. The North American Wood Frog, for example, shuts down its entire body system in winter; its heart stops beating and its whole body is frozen, until summer returns; at which point it thaws and ‘comes back to life’ 4. -
Cryogenic Transport Trailers
CRYOGENIC TRANSPORT TRAILERS Worthington Industries delivers end-to-end solutions for storing and transporting cryogenic liquids. Our high- quality custom trailers are manufactured at our production facility in Theodore, Alabama. Worthington's transport trailers are customized to meet your unique needs and designed to operate for years to come, which means dependable fleets with lower transportation, maintenance and refurbishment costs. We’re always seeking new ways to increase your productivity, performance and value. Our trailers feature lightweight aluminum or stainless steel liners for the safe transportation of the specialty liquefied gases such as: • Liquid Nitrogen (LIN) • Liquid Argon (LAR) • Liquid Oxygen (LOX) • Liquid Hydrogen (LH2) • Liquid Natural Gas (LNG) OUR ENGINEERS WILL WORK WITH YOU TO DETERMINE THE BEST CONFIGURATION FOR YOUR OPERATION. LIN LAR LOX LH2 LNG Spec ATL8400-33PE ATL5150-40PH 6000STL-40PE 17900STL-165P ATL12800-70P (Engine drive) (Hydraulic drive) (Engine drive) ATL8400-33PH (Engine drive 6000STL-40PH (Hydraulic drive) available) (Hydraulic drive) ATL8400-33PL (Electrical drive) Gross Capacity (gallons) 8,400 5,150 6,000 17,900 12,800 Pressure (PSI) 33 40 40 165 70 Inner Vessel Material Alum Alum SS SS Alum Outer Vessel Material Alum Alum C or C/SS C or C/SS C or C/SS *Alum = Aluminum, SS = Stainless Steel, C = Carbon Steel ASME CERTIFIED, ASME U STAMP, NATIONAL BOARD CERTIFIED, DOT-APPROVED (#CT-13707), REPAIR OR BUILD TO MC -331, MC-338 anD CGA-341 4075 HAMILTON ROAD THEODORE, ALABAMA 36582 P: 844.273.7517 [email protected] WORTHINGTONINDUSTRIES.COM/TRANSPORTTRAILERS © 2018, Worthington Industries Inc. 07/18 CRYOGENIC TRANSPORT TRAILER REPAIRS Worthington Industries offers full rehab as well as DOT inspection and certification of cryogenic trailers in our Theodore, Alabama facility. -
Cryogenic Liquids
ENVIRONMENTAL HEALTH & SAFETY Cryogenic Liquids Safety Fact Sheet Fact General Cryogen Type of gas Cryogenic liquids are liquefied gases that are kept in their liquid state at very low temperatures. These liquids have boiling points below -238°F (-150°C) and are Argon (Ar) Inert gases at normal temperatures and pressures. Different cryogens become liquids under different conditions of temperature and pressure, but all have two common Helium (He) Inert properties: they are extremely cold and small amounts of the liquid can expand into very large volumes of gas. Hydrogen gas (H2) Flammable Nitrogen gas (N2) Inert Most cryogenic liquids and the gases they produce can be placed into three groups: Oxygen (O2) Oxygen Inert gases – These gases do not react chemically to any great extent and do not burn or support Methane (CH4) Flammable combustion. Carbon Monoxide Flammable gases – Produce a gas that can burn in air (CO) Flammable when ignited. Oxygen – Reacts explosively with organic materials; supports combustion. Hazards Cryogens can present one or more of the following hazards: Extreme Cold: Cryogenic liquids and their associated cold vapors and gases can produce effects on the skin similar to a thermal burn. Brief exposures can damage delicate tissues, such as the eyes. Prolonged exposure of the skin can cause a cold burn and frostbite. Asphyxiation: When cryogenic liquids form a gas, the gas is very cold and usually heavier than air; even if the gas is non-toxic, it displaces air. Oxygen deficiency (i.e. asphyxiation) can cause death and is a serious hazard in confined spaces. Toxicity: Each gas can cause specific health effects. -
(Regulatory) Committee
Planning (Regulatory) Committee Date: Friday, 31 March 2017 Time: 10:00 Venue: Edwards Room, County Hall, Martineau Lane, Norwich, Norfolk, NR1 2DH Persons attending the meeting are requested to turn off mobile phones. Membership Mr M Sands (Chairman) Mr S Agnew Mr J Law Mr S Askew Mr B Long Mr M Baker Ms E Morgan Mr B Bremner Mr W Northam Mr C Foulger (Vice-Chairman) Mr E Seward Mr A Grey Mr M Storey Mr D Harrison Mr J Ward Mr T Jermy Mr A White At meetings of this Committee, members of the public are entitled to speak before decisions are made on planning applications. There is a set order in which the public or local members can speak on items at this Committee, as follows: • Those objecting to the application • District/Parish/Town Council representatives • Those supporting the application (the applicant or their agent.) • The Local Member for the area. Anyone wishing to speak regarding one of the items going to the Committee must give written notice to the Committee Officer ( [email protected] ) at least 48 hours before the start of the meeting. The Committee Officer will ask which item you would like to speak about and in what respect you will be speaking. Further information can be found here . For further details and general enquiries about this Agenda please contact the Committee Officer: Julie Mortimer on 01603 223055 or email [email protected] 1 Under the Council’s protocol on the use of media equipment at meetings held in public, this meeting may be filmed, recorded or photographed. -
Properties of Cryogenic Insulants J
Cryogenics 38 (1998) 1063–1081 1998 Elsevier Science Ltd. All rights reserved Printed in Great Britain PII: S0011-2275(98)00094-0 0011-2275/98/$ - see front matter Properties of cryogenic insulants J. Gerhold Technische Universitat Graz, Institut fur Electrische Maschinen und Antriebestechnik, Kopernikusgasse 24, A-8010 Graz, Austria Received 27 April 1998; revised 18 June 1998 High vacuum, cold gases and liquids, and solids are the principal insulating materials for superconducting apparatus. All these insulants have been claimed to show fairly good intrinsic dielectric performance under laboratory conditions where small scale experiments in the short term range are typical. However, the insulants must be inte- grated into large scaled insulating systems which must withstand any particular stress- ing voltage seen by the actual apparatus over the full life period. Estimation of the amount of degradation needs a reliable extrapolation from small scale experimental data. The latter are reviewed in the light of new experimental data, and guidelines for extrapolation are discussed. No degradation may be seen in resistivity and permit- tivity. Dielectric losses in liquids, however, show some degradation, and breakdown as a statistical event must be scrutinized very critically. Although information for break- down strength degradation in large systems is still fragmentary, some thumb rules can be recommended for design. 1998 Elsevier Science Ltd. All rights reserved Keywords: dielectric properties; vacuum; fluids; solids; power applications; supercon- ductors The dielectric insulation design of any superconducting Of special interest for normal operation are the resis- power apparatus must be based on the available insulators. tivity, the permittivity, and the dielectric losses. -
Consultation on the Proposed Revision of Fees for Statutory Services Delivered by the Animal & Plant Health Agency (APHA) Consultee List
Consultation on the proposed revision of fees for statutory services delivered by the Animal & Plant Health Agency (APHA) Consultee List Artificial Breeding Controls (Bovine Embryos, Bovine Semen and Porcine Semen) ACMC SPF GENEBANK AI SERVICES (NI ) LTD ANDREW MELLING LTD BESS EMBRYO TRANSFER BISHOPTON VETERINARY GROUP BOVINE GENETICS CAMBRIDGE ENBRYO TRANSFER LTD CEDAR VETERINARY SERVICES LTD CELLTECH EMBRYO TRANSFER LTD COGENT BREEDING LTD D & C FAWCETT LTD DEERPARK PEDIGREE PIGS DELFRYN DOVEA GENETICS LTD ELITE SIRES LTD EMBRYONICS - PART OF WILLOWS VETERINARY GROUP GENUS BREEDING GLENMARSHALL PEDIGREE PIGS GLENSHANE VETERINARY CLINICS GOOD GENETICS GROOMSBRIDGE STUD HERMITAGE SEABOROUGH LTD INIMEX GENETICS LTD INNOVIS LTD JERSEY ISLAND GENETICS JIM CAMERON LIVESTOCK SERVICES JJ GENETICS JSR GENETICS LAMBERT LEONARD AND MAY NETHERCROFT FARM OAKHAM VETERINARY HOSPITAL PARAGON EMBRYO TRANSFER PIC UK R H TAIT & COMPANY RATTLEROW FARMS LTD SCAWFELL GENETICS LTD SEMEX SLIGO AI STALLION AI SERVICES THE DROVE VETERINARY HOSPITAL THE STALLION COMPANY THE VALE VETERINARY CENTRE UK SIRE SERVICES WERN VETERINARY SURGERY WEST KINGTON STALLION CENTRE WESTMORLAND VETERINARY CENTRE WESTPOINT VETERINARY SERVICES WINDY RIDGE WOODLANDER STUD Poultry Health Scheme 2 AGRICULTURE LTD ALEXANDER & ANGELLS (FARMS) LTD. ANNYALLA CHICKS AUSTRALIAN RARE POULTRY IMPORTATION SYNDICATE AVIAGEN LTD AVIAGEN TURKEYS BANHAM GROUP LTD BERNARD MATTHEWS LTD BURWELL HATCHERY LTD, CHERRY VALLEY FARMS LTD COBB EUROPE LTD COUNTY GAME FARM CRANBERRY FOODS LTD FARM FRESH HATCHERIES -
Cryogenics and Ultra Low Temperatures - Yuriy M
PHYSICAL METHODS, INSTRUMENTS AND MEASUREMENTS – Vol. III - Cryogenics and Ultra Low Temperatures - Yuriy M. Bunkov CRYOGENICS AND ULTRA LOW TEMPERATURES Yuriy M. Bunkov Centre de Recherches sur les Tres Basses Temperatures (CRTBT), Grenoble, France Keywords: absolute (Kelvin) temperature scale, absolute zero of temperature, adiabatic demagnetization, negative temperature, cryogenics, dilution refrigeration, Joule– Thomson effect, Pomeranchuk effect, superconductivity, superconductivity, superfluid 4He (He-II), superfluid 3He, low temperature physics, ultra low temperature physics, vortex line Contents 1. Introduction 2. Temperature Scales 3. History 4. The Methods of Refrigeration 4.1. Evaporation Cryostats 4.1.1. 3He Evaporation Cryostat 4.2. Dilution Refrigeration 4.3 Pomeranchuk Cooling 4.4. Adiabatic Demagnetization 5. Physics at Lower Temperatures 5.1 Low Temperatures Physics and Cosmology 6. Applications Glossary Bibliography Biographical Sketch Summary This article describes the scientific and technical aspects of low and ultra low temperatures. The article includes the historical background, explanation of temperature scales, description of different cooling methods, and the modern problems of ultra low temperature UNESCOphysics as well low temperature – applications. EOLSS 1. Introduction Cryogenics is theSAMPLE technical discipline whic hCHAPTERS studies and uses materials at very low temperatures, as well as the methods for producing low temperatures. The temperature achieved depends on the type of liquefied gas, known as “cryogens.” This word, formed from the Greek κρυοζ (cold) and γευεζ (generated from,) was introduced by Kamerlingh Onnes, who liquefied helium for the first time and who can thus be regarded as the progenitor of cryogenics as known today. The field of cryogenics involves the production and application of low temperatures in science and technology.