DOCSLIB.ORG

Steam Jet Ejectors

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

Bulletin 5E-H Steam Jet Ejectors Introduction materials such as Monel, Alloy 20, Hastelloy, Silicon Carbide, Titanium, Bronze and others. They can also be Schutte & Koerting has a century of experience in made from a variety of nonmetals such as Haveg, designing and building efficient jet vacuum ejectors. This Graphite and Teflon. vast experience allows S & K to handle virtually any jet ejector application—no matter how complex. Steam jet ejectors are used in the process, food, steel and allied industries in connection with such operations Steam Jet Ejectors are based on the ejector-venturi as filtration, distillation, absorption, mixing, vacuum principle. In operation, steam issuing through an packaging, freeze drying, dehydrating and degassing. expanding nozzle has its pressure energy converted to They will handle both condensable and non-condensable velocity energy. A vacuum is created, air or gas is gases and vapors as well as mixtures of the two. Small entrained and the mixture of gas and steam enters the amounts of solids or liquids will not cause operating venturi diffuser where its velocity energy is converted into problems. Accidental entrainment of liquid slugs can pressure sufficient to discharge against a predetermined cause momentary interruption in pumping, but no back pressure. damage to equipment. Jet vacuum ejectors are readily available in ductile iron, All S & K ejectors are computer designed and type-tested steel, stainless steel and, on special order, in many more to insure reliability. Index Description Page Introduction 1 Advantages 2 Performance Characteristics 3 SINGLE STAGE EJECTORS Fig. 556 (Standard Construction) 4 Fig. 556 Tefzel-Line Ejector 5 Fig. 555H (Haveg) 6 Fig. 562/555G (Graphite) 7 Fig. 557/542 (Flanged) 8 MULTI-STAGE EJECTORS Condensing and Non-Condensing Types 10 Two Stage 11 Three Stage 12 Four, Five, and Six Stage 13 Ejectors with Surface Condensers 14 Non-Condensing Types 14 Low Level Vacuum Units 15 Corrosion Resistant Units 15 Vacuum Boosters 16 Application Considerations 17 Measurement of Low Absolute Pressures 17 Quotation Information 18 Applications 19 Schutte & Koerting • 2510 Metropolitan Drive • Trevose, PA 19053 • USA • tel: (215) 639-0900 • fax: (215) 639-1597 • www.s-k.com • [email protected] 1 Steam Jet Ejectors Bulletin 5E-H Advantages CORROSION /E ROSION RESISTANCE . Units can be made in practically any workable material to provide utmost The principal advantages of steam jet ejectors over other resistance to corrosion and erosion. Standard models are types of vacuum producing units are... supplied in a choice of materials as indicated in this LOW COST . Pumps of the ejector type are small in relation bulletin. to the work they do and their cost is low in comparison EASY INSTALLATION . Relatively light in weight, jet ejectors with other types of equipment. are easy to install, require no foundations. Even multi- No MOVING PARTS . These units have no moving parts to stage units are readily adaptable to existing conditions. adjust or repair. HIGH VACUUM PERFORMANCE . Steam jet ejectors can SIMPLE , C OMPACT CONSTRUCTION . Nothing could be handle air or other gases at suction pressures as low as simpler than a jet vacuum ejector. It consists of an three microns Hg. abs. expanding nozzle, a body, and a venturi (or diffuser). RELIABILITY . Because of their inherent simplicity, these pumps are reliable. Maintenance requirements are simple and are easily accomplished. 2 Schutte & Koerting • 2510 Metropolitan Drive • Trevose, PA 19053 • USA • tel: (215) 639-0900 • fax: (215) 639-1597 • www.s-k.com • [email protected] Steam Jet Ejectors Bulletin 5E-H 810 M Normal Design Discharge Pressure 1000 MM Performance Characteristics 9 8 7 6 5 The graph, Fig. 3, shows the relative suction 4 3 pressure capabilities of S & K Steam Jet 2 E 100 MM N Ejectors from single-stage through six-stage O 9 8 7 types. It can be seen that in some cases units 6 5 overlap. When this occurs, a detailed 4 Lower End Indicates 3 Zero Suction Capacity O 2 comparison of initial costs and steam W T consumption should be made before making a . 10 MM s 9 8 E b 7 6 E A decision as to the exact type required to meet 5 . 4 R g 3 H H specific requirements. S & K engineers should T e 2 r be consulted for their recommendations based u s 1 MM s 9 on experience in many applications. Single- e 8 R r 7 U P 6 5 Stage Ejectors are made in several models to O n 4 F o i 3 meet various suction pressure requirements. t c 2 u Fig. 4 shows the range of suction pressure S 100 MICRON 9 E offered by each model. 8 7 V 6 I 5 F 4 A feature of the standard S & K line is that users 3 X 2 I can select a size ideally suited for individual S 10 MICRON requirements. In addition, a new and carefully 9 8 7 6 tested design provides far greater capacities 5 4 than ever before available. The smallest size 3 unit now covers a range that previously required 2 1 MICRON two ejectors of earlier design. 123456 Stages Fig. 3. Suction Pressure Ranges of Single and Multi-Stage Steam Jet Ejectors. 30 S-8 S-7 . s b S-6 A . g H . n I - S-5 e r u s s e r S-4 P n o i t c S-3 u S S-2 S-1 0 1 1000 Relative Suction Capacity - PPH Dry Air Fig. 4. Suction Pressure Ranges of Single-Stage Ejectors. Schutte & Koerting • 2510 Metropolitan Drive • Trevose, PA 19053 • USA • tel: (215) 639-0900 • fax: (215) 639-1597 • www.s-k.com • [email protected] 3 Steam Jet Ejectors Bulletin 5E-H SINGLE-STAGE EJECTORS ductile iron or stainless steel body but tails are fabricated from steel. Details of construction and dimensions are shown in Figures 6, and 7. FIG. 556 STANDARD CONSTRUCTION The standard primary stage of a two-stage ejector system (page 11), designated as Fig. 541, is constructed in the same manner and Application externally follows the dimension in Table 1. S & K Single Stage Ejectors are designed to cover a suction pressure Sizes above 6" are made to special order and are generally 100% range from 1" to 30 " Hg Absolute utilizing eight specific internals as fabricated. shown in Fig. 4, page 3 and are used in applications of the types noted on page 1. Ductile iron has strength characteristics similar to steel while retaining many desirable features of cast iron. It is often used as a substitute for Each of the "S" types indicated will produce the most economical steel. Units, however, can be supplied in steel, stainless steel and other performance in its specific suction pressure range. alloy utilizing barstock diffusers (see page 1). Construction S & K maintains sufficient parts inventory to assure component availability in all standard sizes in ductile iron and stainless steel for fast The standard Fig. 556 Single Stage Ejector comprises a converging- turnaround. diverging steam nozzle, a body or suction chamber, and a venturi tail (diffuser). On special orders, ejectors can be supplied in Steel, Monel, Alloy 20, Hastelloy, Titanium, Teflon, Haveg, Graphite (pages 5 and 6) and many Sizes 1" through 3" are cast in ductile iron or stainless steel with Type other materials. 316 stainless steel steam nozzle. Sizes 4", 5” and 6" are constructed of Pressure Pressure Connection Connection (Steam) (Steam) Pipe Plug Body Suction Suction Connection Connection Removable (air or other gases) (air or other gases) Nozzle Removable Venturi Tail Discharge Discharge Connection Connection (Mixture) (Mixture) Fig. 6. Fig. 556 Steam jet Ejector. This Fig. 7. Fig. 556 design for models design is standard for models with with 5” and 6” suction connections. Fig. 5. Fig. 556 Steam Jet Ejector. 1”, 1 1/2 ”, 2”, 2 1/2 ”, 3” and 4” suction connections. D G Table 1. Sizes and Dimensions of Fig. 556 Ejectors (Standard Construction) C Size Unit Dimensions Connections Net E in Weight Inches A B C D E F G (Lbs.) 1 11 19/64 8 7/8 2 27/64 2 7/8 1 1 3/4 14 1 1/2 16 7/16 13 1/4 3 3/16 3 3/8 1 1/2 1 1/2 1 18 B A 2 21 9/16 17 11/16 3 7/8 3 5/8 2 2 1 1/4 36 2 1/2 26 41/64 22 1/16 4 37/64 3 7/8 2 1/2 2 1/2 1 1/2 65 3 31 43/64 26 7/16 5 15/64 4 5/8 3 3 2 83 4 42 27/64 35 5/16 7 7/64 5 7/8 4 4 2 1/2 105 5 53 55/64 45 7/8 7 63/64 7 1/2 6 5 3 300 6 64 21/64 54 1/2 9 53/64 7 1/2 6 6 3 450 Note: Suction and discharge flanges are 150 Ib. ANSI. F 4 Schutte & Koerting • 2510 Metropolitan Drive • Trevose, PA 19053 • USA • tel: (215) 639-0900 • fax: (215) 639-1597 • www.s-k.com • [email protected] Steam Jet Ejectors Bulletin 5E-H ® SINGLE-STAGE EJECTORS 100 mils of Tefzel . This design provides for an ejector with exceptional corrosion resistance as well as FIG. 556 TEFZEL-LINED STEAM JET EJECTORS mechanical strength. The motive connection has been FOR CORROSIVE APPLICATIONS modified from our standard design to accept a clamp-in steam nozzle that can be supplied in graphite or any The Tefzel ® -Lined Steam Jet Ejector is designed for use corrosion resistant metal.
Recommended publications
  • Getinge Lancer LSS 590 Laboratory Steam Sterilizer Specifications GETINGE LANCER LSS 590 2 Basic Specifications

    Getinge Lancer LSS 590 Laboratory Steam Sterilizer Specifications GETINGE LANCER LSS 590 2 Basic Specifications

    Getinge Lancer LSS 590 Laboratory Steam Sterilizer Specifications GETINGE LANCER LSS 590 2 Basic specifications Top Top, Recessed 64.7 39.5 63.9 26 63 51 26.5 74 Front Side, Recessed LSS 590 • Internal Volume 20.7 cu. ft. (586 L) • Door Configurations Single Door or Double Door, Pass-through • Design Operating Temperature Gravity/Vacuum Cycles: 230°–275°F (110°–135°C) Liquid Cycles: 219°–275°F (104°–135°C) Optional Low Temp Cycle: 169°–212°F (76°–100°C) • Interior Dimensions (w × h × d) 26.5" × 26.5" × 51" (672 × 672 × 1300 mm) • Exterior Dimensions (w × h × d) Single Door: 39.5" × 74" × 63.9” (1003 × 1880 × 1623 mm) Double Door: 39.5" × 74" × 64.7" (1003 × 1880 × 1643 mm) GETINGE LANCER LSS 590 3 Part 1: Selection Guide Door Configuration • single door • double door, pass-through Steam Source • facility/house steam (standard) • steam generator(s) - 208V, AC, 50/60Hz, 3-phase - 240V, AC, 50/60Hz, 3-phase - 380V, AC, 50Hz, 3-phase - 480V, AC, 60Hz, 3-phase - 600V, AC, 60Hz, 3-phase - carbon steel (standard) - stainless steel - manual blowdown (standard) - automatic blowdown Steam generator is located integral to the sterilizer (possible in combination with vacuum pump for LSS 590). Remotely located Air Removal • ejector (standard) • vacuum pump, liquid ring - 208V, AC, 60Hz, 3-phase - 380V, AC, 50Hz, 3-phase - 480V, AC, 60Hz, 3-phase Additional Programs • Sealed liquids and low temp cycles (vacuum pump and load probe required) Recesses and Barriers • recessed, one-wall • recessed, two-wall • freestanding (cabinet enclosure panels required) • with cross contamination barrier flange GETINGE LANCER LSS 590 DATE: CUSTOMER / FACILITY: 4 Part 2: General Specifications The Getinge Lancer LSS 590 Steam Sterilizer is designed Specifications Index for high- performance sterilization of labware, media and Sterilizer 6 laboratory byproducts used in research, analytical, environ- mental and industrial laboratories.
  • Vacuum Products 450 455 454 453 452

    Vacuum Products 450 455 454 453 452

    VACUUM PRODUCTS 450 PIAB piCOMPACT Integrated Controls Ejectors 452 PIAB piINLINE Vacuum Ejectors 453 PIAB piCLASSIC Classic Pumps ELMO RIETSCHLE Rotary Vane 454 Vacuum Pumps & Blowers ELMO RIETSCHLE Vacuum Pumps 455 & Accessories NINE PIAB PRODUCT OVERVIEW Nine 428 PIAB PRODUCT OVERVIEW Nine 429 AN ECO-FRIENDLY VACUUM SYSTEM By never using more energy than absolutely necessary, companies can reduce their carbon footprint as well as their costs. Piab can work with you to achieve the lowest possible energy consumption. ENVIRONMENTAL INDEX Your pump will require less compressed air when placed close to the point of suction, thus reducing CO2 emissions and energy consumption. The graph demonstrates the relationship between environmental impact and the distance of the pump from the point of suction. BEST TO USE A DECENTRALISED VACUUM SYSTEM A decentralised system with the vacuum pump / cartridge placed directly at the point of suction eliminates the risk of loss in the vacuum piping and the need for expensive, oversized components. A centralised vacuum system is designed to have one vacuum source for multiple suction points. • Lowest energy usage • Fastest cycle time • Safest product handling • Most flexible design for zoning • Easiest troubleshooting • Independently working suction cups Nine • Most consistent / even performance IF NOT, DESIGN A CENTRALISED VACUUM SYSTEM A centralised vacuum system is designed to have one vacuum source for multiple suction points. • Easy installation • Easy vacuum sensing and controls • Light end-of-arm tooling • Simple filtration options • Some loss in system performance due to distance Contact your distributor for further information SUCTION CUPS / GRIPPERS INTRODUCTION SUCTION CUP CATEGORY FEATURES APPLICATIONS • Unique modular suction cup concept with individually optimised lips and bellows for Smooth, textured, uneven gripping, lifting and height compensation on almost any kind of object.
  • High-Throughput Microcircuit Analysis of Individual Human Brains Through

    High-Throughput Microcircuit Analysis of Individual Human Brains Through

    bioRxiv preprint doi: https://doi.org/10.1101/639328; this version posted May 18, 2019. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY 4.0 International license. 1 High-throughput microcircuit analysis of individual human brains 2 through next-generation multineuron patch-clamp 3 Yangfan Peng1,2, Franz X. Mittermaier1, Henrike Planert1, Ulf C. Schneider3, Henrik Alle1, Jörg 4 R.P. Geiger1 5 1Institute of Neurophysiology, Charité – Universitätsmedizin Berlin, Germany 6 2Department of Neurology, Charité – Universitätsmedizin Berlin, Germany 7 3Department of Neurosurgery, Charité – Universitätsmedizin Berlin, Germany 8 Abstract 9 Comparing neuronal microcircuits across different brain regions, species and individuals can 10 reveal common and divergent principles of network computation. Simultaneous patch-clamp 11 recordings from multiple neurons offer the highest temporal and subthreshold resolution to 12 analyse local synaptic connectivity. However, its establishment is technically complex and the 13 experimental performance is limited by high failure rates, long experimental times and small 14 sample sizes. We introduce an in-vitro multipatch setup with an automated pipette pressure 15 and cleaning system facilitating recordings of up to 10 neurons simultaneously and sequential 16 patching of additional neurons. We present hardware and software solutions that increase the 17 usability, speed and data throughput of multipatch experiments which allowed probing of 150 18 synaptic connections between 17 neurons in one human cortical slice and screening of over 19 600 connections in tissue from a single patient.
  • DOD MIL-STD 1330D Download

    DOD MIL-STD 1330D Download

    INCH-POUND MIL-STD-1330D(SH) 20 September 1996 SUPERSEDING MIL-STD-1330C(SH) 1 February 1985 (See 6.6) DEPARTMENT OF DEFENSE STANDARD PRACTICE FOR PRECISION CLEANING AND TESTING OF SHIPBOARD OXYGEN, HELIUM, HELIUM-OXYGEN, NITROGEN, AND HYDROGEN SYSTEMS Ú AMSC FSC 4730 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. MIL-STD-1330D(SH) 20 September 1996 FOREWORD 1. This standard is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 2. This military standard is for use by naval activities and private firms performing services as prime or sub-contractors for Naval Sea Systems Command. 3. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, SEA 03R42, Naval Sea Systems Command, 2531 Jefferson Davis Highway, Arlington, VA 22242-5160, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. ii MIL-STD-1330D(SH) 20 September 1996 CONTENTS PARAGRAPH PAGE 1. SCOPE..................................................... 1 1.1 Scope.................................................... 1 1.2 Applicability............................................ 1 2. APPLICABLE DOCUMENTS...................................... 2 2.1 General.................................................. 2 2.2 Government documents..................................... 2 2.2.1 Specifications, standards, and handbooks................. 2 2.2.2 Other Government documents, drawings, and publications... 3 2.3 Non-Government publications.............................. 3 2.4 Order of precedence...................................... 4 3. DEFINITIONS............................................... 4 3.1 Aqueous cleaning solution................................ 4 3.2 Blue line................................................ 4 3.3 Clean...................................................
  • THESIS WASTE HEAT RECOVERY from a HIGH TEMPERATURE DIESEL ENGINE Submitted by Jonas E. Adler Department of Mechanical Engineerin

    THESIS WASTE HEAT RECOVERY from a HIGH TEMPERATURE DIESEL ENGINE Submitted by Jonas E. Adler Department of Mechanical Engineerin

    THESIS WASTE HEAT RECOVERY FROM A HIGH TEMPERATURE DIESEL ENGINE Submitted by Jonas E. Adler Department of Mechanical Engineering In partial fulfillment of the requirements For the Degree of Master of Science Colorado State University Fort Collins, Colorado Fall 2017 Master’s Committee: Advisor: Todd M. Bandhauer Daniel B. Olsen Sybil E. Sharvelle Copyright by Jonas E. Adler 2017 All Rights Reserved ABSTRACT WASTE HEAT RECOVERY FROM A HIGH TEMPERATURE DIESEL ENGINE Government-mandated improvements in fuel economy and emissions from internal combustion engines (ICEs) are driving innovation in engine efficiency. Though incremental efficiency gains have been achieved, most combustion engines are still only 30-40% efficient at best, with most of the remaining fuel energy being rejected to the environment as waste heat through engine coolant and exhaust gases. Attempts have been made to harness this waste heat and use it to drive a Rankine cycle and produce additional work to improve efficiency. Research on waste heat recovery (WHR) demonstrates that it is possible to improve overall efficiency by converting wasted heat into usable work, but relative gains in overall efficiency are typically minimal (~5-8%) and often do not justify the cost and space requirements of a WHR system. The primary limitation of the current state-of-the-art in WHR is the low temperature of the engine coolant (~90°C), which minimizes the WHR from a heat source that represents between 20% and 30% of the fuel energy. The current research proposes increasing the engine coolant temperature to improve the utilization of coolant waste heat as one possible path to achieving greater WHR system effectiveness.
  • Multi-Stage Steam Jet Vacuum Systems Technical Vacuum up to 0.05 Mbar Multi-Stage Steam Jet Vacuum Systems Ideal Solutions for Any Application

    Multi-Stage Steam Jet Vacuum Systems Technical Vacuum up to 0.05 Mbar Multi-Stage Steam Jet Vacuum Systems Ideal Solutions for Any Application

    Multi-stage steam jet vacuum systems Technical vacuum up to 0.05 mbar Multi-stage steam jet vacuum systems Ideal solutions for any application There is virtually no limit to where multi-stage steam jet vacuum systems in the processing industry can be used. Depending on the application, a wide range of variants of these sys- tems are applied. The intermediate condensers are typical features of virtually any multi- stage steam jet vacuum system. The number of booster ejectors (1-, 2- or 3-stage) before the first intermediate condenser depends on the process vacuum required, the cooling water conditions and the motive steam pressure. Sometimes a pre-condenser can be used to en- hance the vacuum system. The design of the intermediate condensers determines the entrai- ned steam proportion with the departing inert gas. This mixture is compressed further within the next following jet ejector stage. Körting Hannover AG has a worldwide leading position in designing and manufacturing multi- stage steam jet vacuum systems. The company has been developing and supplying technical vacuum equipment since it was founded in 1871 by Ernst Körting. By providing process- related designs and reflecting technical and financial parameters, an enhanced system is developed for any application. The design of Körting steam jet vacuum ejectors is based on particularly thorough characteristic diagrams developed on in- house test rigs over several decades. Until today there are still no theoretical or nu- merical calculation methods for designing steam jet vacuum ejectors. The high quality of Körting’s in-house design data base is crucial in order to ensure that the design of the steam jet vacuum ejectors is safe and economical.
  • Steam Consumption of Pumping Machinery

    Steam Consumption of Pumping Machinery

    Steam Consumption of Pumping Machinery HENRY EZRA KEENEY THESIS FOR THE DEGREE OF BACHELOR OF SCIENCE IN MECHANICAL ENGINEERING IN THE COLLEGE OF ENGINEERING OF THE UNIVERSITY OF ILLINOIS PRESENTED JUNE, 19Q0 THIS IS TO CERTIFY THAT THE THESIS PREPARED UNDER MY SUPERVISION BY ____________ ______ Henry.Ezra.Keeney........_... entitled..s.ta.ara.C.an8mp.i.io.n.....Q.£ ...Bumping.. Machinery. IS APPROVED BY ME AS FULFILLING THIS PART OF THE REQUIREMENTS FOR THE DEGREE o f ....Bachelor.of.Science.in.Mechanical...Engineering.* h e a d o f d e p a r t m e n t o f ........Mechanical.Engineering, ' INTRODUCTION. Those who have not considered the subject of water distribu­ tion* may not believe that pumping machinery stands at the head of the various branches of Engineering. As to the truth of this state­ ment, we 'nave only to consider that coal could not be obtained with­ out the pumping engine; our water supply for boilers and our city water supply would be difficult of management if it were not for the pump. ”’ater is found in every mine, to a greater or less extent, and the first applications of steam were for pumping the water out of these mines. HISTORY AND DEVELOPMENT. Many forms of puraps were used for obtaining water, but not until the 17th century was steara used for pumping water. So man­ ifest was the economy of steam pumps over those driven by horses, (which were previously used to a great extent) even at the begin­ ning, that they were introduced as rapidly as they could be fur­ nished with the limited supply of tools at the command of the en­ gine and boiler builders of that day.
  • High-Throughput Microcircuit Analysis of Individual Human Brains Through Next- Generation Multineuron Patch-Clamp

    High-Throughput Microcircuit Analysis of Individual Human Brains Through Next- Generation Multineuron Patch-Clamp

    TOOLS AND RESOURCES High-throughput microcircuit analysis of individual human brains through next- generation multineuron patch-clamp Yangfan Peng1,2*, Franz Xaver Mittermaier1, Henrike Planert1, Ulf Christoph Schneider3, Henrik Alle1, Jo¨ rg Rolf Paul Geiger1* 1Institute of Neurophysiology, Charite´ – Universita¨ tsmedizin Berlin, Berlin, Germany; 2Department of Neurology, Charite´ – Universita¨ tsmedizin Berlin, Berlin, Germany; 3Department of Neurosurgery, Charite´ – Universita¨ tsmedizin Berlin, Berlin, Germany Abstract Comparing neuronal microcircuits across different brain regions, species and individuals can reveal common and divergent principles of network computation. Simultaneous patch-clamp recordings from multiple neurons offer the highest temporal and subthreshold resolution to analyse local synaptic connectivity. However, its establishment is technically complex and the experimental performance is limited by high failure rates, long experimental times and small sample sizes. We introduce an in vitro multipatch setup with an automated pipette pressure and cleaning system facilitating recordings of up to 10 neurons simultaneously and sequential patching of additional neurons. We present hardware and software solutions that increase the usability, speed and data throughput of multipatch experiments which allowed probing of 150 synaptic connections between 17 neurons in one human cortical slice and screening of over 600 connections in tissue from a single patient. This method will facilitate the systematic analysis of microcircuits
  • Getinge #67 400-500 HC Product Spec.Indd

    Getinge #67 400-500 HC Product Spec.Indd

    CUSTOMER: REFERENCE: 400 HC & 500 HC SERIES GRAVITY & VACUUM/GRAVITY STEAM STERILIZERS FOR HEALTHCARE APPLICATIONS PRODUCT SPECIFICATION PRODUCT Both the 400HC Series and 500HC Series Sterilizers consist of two models. The 422HC and 522HC Gravity Steam Sterilizers employ gravity/downward displacement with positive pulse con- ditioning and the 433HC and 533HC Vacuum/Gravity Steam Sterilizers employ both gravity/downward displace ment with pos- itive pulse conditioning and pressure/vacuum pulsing for dynamic air removal. Up to 22 cycles can be easily accessed in two easy steps. Custom cycle names can be des ignated for each cycle and re-ordered for easy access. All cycle phases are sequenced and monitored by the control system, providing both audible and visual notifi cation of deviation from key operating parameters. APPLICATION For general-purpose gravity or vacuum steam sterilization of ELECTRICAL SUPPLY - Sterilizer hospital instruments and supplies. The selectable temperature 120V 1Ph 50/60 Hz range is from 230°F to 275°F (110°C to 135°C) and from 219°F 230V 3Ph 50/60 Hz to 275°F (104°C to 135°C) for liquid cycles. Applica tions include wrapped and unwrapped porous and non porous hard goods, VACUUM SOURCE/PIPING gowns or towel packs and liquids in self-venting or unsealed con- Ejector with copper/brass piping and valves tainers. The liquid exhaust is microcomputer controlled for linear Ejector with stainless steel piping to chamber and jacket and consistent liquid cool down, programmable within a specifi ed range. 3-Phase vacuum
  • For Steam Turbine

    For Steam Turbine

    ISO 9001 www.dh.co.kr www. dh.co.kr Certificate Number 32533 We wish to communicate with our customers. OHSAS 18001 If you would like any further information about DongHwa Entec, Certificate Number C 0082 please visit our website (www.dh.co.kr). Gland Condenser DongHwa Entec cares for your concerns. ▶▶Engineering technology for the future Oil Cooler - HEAT EXCHANGER TO COOL THE LUBRICANT OIL FOR ROTATING MACHINERY Heat Exchanger Solution Partner for Steam Turbine Our company endeavor ceaselessly to develop new products and quality improvement Deaerator Deaerator is defined as a mechanical device for removal of dissolved gases, especially oxygen and carbon dioxide from water. And deaerator heat the feed water and maintain regular N.P.S.H of feed water pump. Spray & tray type is utilized for land-use deaerator, and stray • MAIN(SURFACE) CONDENSER & scrubber type is utilized for marine-use deaerator. • EJECTOR CONDENSER • GLAND CONDENSER WITH EJECTOR Donghwa Entec developed major part like spray valve, tray, Head Office and Factory and scrubber and still research for more high efficiency of 7, Noksansandan 261-ro, Gangseo-gu, Busan, Korea • GLAND CONDENSER WITH EXHAUST FAN deaerator. TEL : +82-51-970-1000 FAX : +82-51-970-1001 • OIL COOLER Donghwa Entec has ability of thermal design, strength Hwajeon Office and Factory • DEAERATOR calculation, purchase material, and manufacturing. 20, Hwajeonsandan 1-ro 63beon-gil, Gangseo-gu, Busan, Korea • H.P / L.P HEATER TEL : +82-51-970-1100 FAX : +82-51-970-0710 R&D Center 7, Gwahaksandan-ro 305beon-gil, Gangseo-gu, Busan, Korea H.P / L.P Feed Water Heater TEL : +82-51-970-0711 FAX : +82-51-970-0730 DongHwa Entec (Shanghai) Co., Ltd.
  • ENGINES: an Engine Failure Is Always Bad News. Besides Taking Away

    ENGINES: an Engine Failure Is Always Bad News. Besides Taking Away

    ENGINES: An engine failure is always bad news. Besides taking away your wheels, it forces you to make a painful financial decision. If the cost to repair, overhaul or replace the engine is more than the resale value of your car or truck, the investment may not be worth it. But if your vehicle is in good condition otherwise, repairing or replacing the engine may be less expense than trading for another used vehicle (always a gamble), or taking on payments for a new car or truck. Assuming you have gotten past the initial trauma and has decided in favor of fixing the engine, you have to figure out why the engine failed so the repaired engine (or replacement engine) won't suffer the same fate. A good place to start your postmortem is to review the circumstances that preceded the failure. Sometimes failures occur unexpectedly. One minute the engine is running fine and you're keeping up with traffic, and the next you're sitting along side the road with the hood up wondering what happened. In most instances, though, there is ample warning that something is amiss long before the engine actually fails. Unusual engine noises, low oil pressure, engine overheating, loss of power, misfiring, hard starting and similar drivability and performance complaints can all be indications of problems that need attention. The underlying cause may be something minor or major. There is no way to know unless somebody checks it out. If a motorist ignores such warnings long enough, it can be a very costly mistake because eventually the engine may succumb to whatever is causing the problem, which is a classic example of the famous preventive maintenance line, "You can pay me now or you can pay me later." ENGINE OVERHEATING Overheating can be caused by any number of things.
  • Steam Power Plant Cycle Rankine Cycle

    Steam Power Plant Cycle Rankine Cycle

    Cycle A cycle is a series of two or more processes in which the final state is the same as the initial state. Steam Power Cycle : A power generating cycle that uses steam or water vapor as the working substance. This cycle differ with an internal combustion engine cycle because the combustion occurs in the boiler, unlike that of an IC engine that combustion occurs inside the working cylinders. Steam Power Plant Cycle Rankine Cycle Components: a. Steam Turbine b. Condenser c. Pump d. Steam Generator or boiler Processes: 1 to 2 – Isentropic Expansion (S = C) 2 to 3 – constant pressure Heat Rejection (P = C) 3 to 4 – Isentropic pumping (S = C) 4 to 1 – Constant pressure Heat Addition (P = C) ms 1 kg 1 Steam Turbine Boiler or St ea m Ge ne r at or Wt 2 QA Co nd e ns er Feedwater Q R Pu mp 3 W P T 1 P1 4' 4 P2 = P 3 3 2 2' S 40 A. Turbine Work (W t) (considering S = C; Q = 0; ∆KE = 0; ∆PE = 0) Wt = m s(h 1 – h2) KW Where: ms – steam flow rate, kg/sec h – enthalpy, KJ/kg Wt – turbine power, KW B. Heat Rejected in the Condenser (Q R) QR = m(h 2 – h3) KW C. Pump Work (W P) WP = m(h 4 – h3) D. Heat added to Boiler (Q A) QA = m(h 1 – h4) KW E. Thermal efficiency Net Work e x 100% = Heat Added W e x 100% = Q A F. Net Work W = W t - Wp G.