DOCSLIB.ORG

Air Conditioners, Fans and Heaters

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Air Conditioners, Fans and Heaters K2 ENVIRONMENTAL CONTROLS GENERAL INFORMATION Wiegmann has always recognized that stance, use of louvers or grilles with 3 Closed-Loop Cooling — In harsh our customers in the electrical and filters can be effective. This method, environments involving high tempera- electronic marketplace need reliable, however, usually provides less cool- tures, wash-down requirements, high quality enclosures and environ- ing effect than is necessary with heavy particulate matter or the pres- mental control products to meet their today’s components. ence of chemicals capable of damaging protection requirements. Protection 2 Forced Convection Air Cooling — components (NEMA 4 or 12 environ- Requirements today not only mandate If the installation will be in a clean, ments), ambient air must be kept out NEMA TYPE 12, 3R, 4, & 4X, but also non-hazardous environment with of the enclosure. Closed-loop cooling require a broad mix of BTU & size an acceptable ambient (outside the consists of two separate circulation selections. Wiegmann is proud to offer enclosure) temperature range, a sim- systems. One system, sealed those choices via a whole new line of ple forced-air cooling system utilizing against the ambient air, cools and A/C products. They are: Advantage outside air is usually adequate. recirculates the clean cool air Series, Trim Line Series, Micro-Mini Combined with an air filter, such throughout the enclosure. The second Series, Integrity Series, and the Top devices generally meet the heat system uses ambient air or water to Mount Series. removal needs of typical electronic remove and discharge the heat. Examples of closed-loop cooling Three Basic Cooling Methods equipment and many electrical appli- cations (Fig. 1). Examples of forced equipment employed with electronics When selecting a cooling method there convection air cooling are filtered and process controls are heat are three types to consider. fans, fan trays, and blowers of vari- exchangers and air conditioners. 1 Passive Ventilation — If there is only ous types. a minimal heat gain in your circum- FIGURE 1 — Forced Convection Method Filter & Grille Required Fan or Blower with filter & grille Ambient Air with Heat Ambient Air Load with Heat Load Ambient Air Cabinet Ambient Air Cabinet Fan or Blower with filter & grille Filter & Grille Required Pressurized System — pushes air through enclosure Exhaust System — pulls air through enclosure Fans and Blowers can be used to pressurize (preferred) or exhaust cabinet air. The ambient air should be filtered before it enters the cabinet. FIGURE 2 - Closed Loop Cooling Method Blower Condenser Ambient Air Ambient Air with Heat Heated with Heat Load Air Load Heated Air Blowers Ambient Air Ambient Air Chilled Air Cooled Air Heat Exchanger Blower Evaporator In an air-to-air heat exchanger, heat from air surrounding the In air conditioners, a condenser, an evaporator, electronics is removed by a specially designed and two blowers combine to chill the air circulating heat transfer element before being routed back in the enclosure. into the enclosure. DATA SUBJECT TO CHANGE WITHOUT NOTICE ENVIRONMENTAL CONTROLS K3 AIR CONDITIONERS-APPLICATION INFORMATION Cooling Control Cabinets The effect of significant restrictions in calculated to obtain the total effective Most electrical & electronic control sys- the cabinet air flow path are as follows: heat transfer area. For this calculation, tems generate a substantial amount of The obstructions cause pressure drops, use the surface area of the sides, plus heat during operation. This heat factor which leads to cool air flow reduction. the area of the top, and omit the bot- is intensified as controls are made more This reduction in cool air flow will tom area of the cabinet. compact, perform more functions, and decrease the effective capacity of the Air movement outside the uninsulated are placed in more confined areas. cooling unit. When selecting the proper cabinet will increase the heat conducted Additional problems are encountered cooling unit, allow-ance must be made from the ambient into the enclosure. when the electronic process control for pressure drop. When there is little or no air circulation system is located on-site in an industrial outside the cabinet, the layer of air Heat Load From The Surroundings setting, rather than in a clean computer immediately adjacent to the exterior room. The factory environment can be Ambient conditions can cause a heat cabinet walls acts as an insulating film. hostile to the point that performance gain in the enclosure. The rated Exterior air movement dissipates this and effective life of the electronic com- capacity of the cooling unit must be insulating layer of air in proportion to ponents are materially reduced, or the sufficient to handle this heat gain. the velocity of the air flow. Substantial control system fails completely. When evaluating the additional heat am-bient air circulation will increase the Ambient temperature might be exces- load gained from the surroundings, the transmitted heat load imposed on the sively high, as that found in a steel mill. subject more or less breaks down into cooling unit. Moisture-laden air and air-borne partic- two situations: (1) the cabinet is insu- If the cabinet being cooled is not air ulate matter might be present to lated and well sealed, or (2) the cabinet tight, then high ambient relative humidity adversely affect the electronic compo- is not insulated (most cabinets are will adversely affect the cooling effec- nents, as in the paper manufacturing uninsulated.) tiveness of the air conditioner. When industry. (1) Cabinet Insulated — Normally, well humid air infiltrates a poorly sealed Air conditioners are designed to perform insulated cabinets will not gain sufficient enclosure, the air conditioner is required reliably under many of these harsh con- ambient heat to affect air conditioner’s to use up valuable BTU/HR capacity ditions and to provide the cooling and operation. Maximum operating tem- just to condense the moisture from the environmental protection required by perature for our air conditioners is internal air. Conversely, if the cabinet sensitive electronic production control 125°F. When the air conditioner oper- is well sealed, high ambient relative systems. aties in ambient temperatures below humidity, has very little effect on the 125°F, the cooling capacity of the air heat capacity of the air conditioner. Factors Affecting Model Selection conditioner substantially increases. This selection is presented as a basic (2) Cabinet Not Insulated — Obviously, Steps For Sizing an Air Conditioner outline or checklist of the various con- this design placed more of a burden on Proper selection of an air conditioner ditions to be considered when choos- the cooling unit. Heat is conducted to is determined by the following criteria: ing a cooling unit for a certain applica- the cool side. Thus, high ambient heat • Required cooling capacity BTU/hr. tion. The following are factors which will be readily transmitted into the cooler (complete Steps #1-4) must be considered when selecting a enclosure. cooling unit: • Mounting requirements (top or side To determine the additional capacity mounting options) Internal Heat Load — This is the heat required of our air conditioner installed • Dimension of air conditioner and dissipated by the electronic controls. It in an uninsulated cabinet, the surface enclosure is expressed in watts. One watt equals square footage of the enclosure must be 3.413 BTU/HR. Thus, to obtain the approximate cooling capacity required to remove a specific heat load, the fol- Cooling And Control Cabinets lowing formula can be used: Watts x 3.413 = BTU/HR STEP ONE STEP TWO STEP THREE STEP FOUR For example, a heat load of 800 watts (Watts x 3.413) + requires an air conditioner capable of [1.25 x Area ft.2 x removing at least 2,730 BTU/HR. ∆ T (°F)] =BTU/HR. Resistance to Air Flow in the Capacity Required Enclosure BTU/HR. Capacity Air Flow is measured in cubic feet per Rating minute (CFM). To create an air flow of any desired velocity requires that pres- sure be produced by the blower in the air conditioner. Resistance to this 1 Watt = 3.413 BTU/HR. 1 m2 = 10.76 ft.2 1oC or 1oK∆T=1.8oF T blower-produced air flow is created by Determine the internal Calculate the exposed Determine the tempera- obstruction within the cabinet in the air heat load in Watts that surface area of the ture differential by sub- flow path. The resistance itself is called must be dissipated. enclosure: 2(h’ x w’) + tracting the maximum pressure drop (P.D.) and is measured in 2(h’ x d’) + (w’ x d’) = allowable temperature inches of water column. Area (ft2) inside the enclosure (Ti) from the maximum ambient temperature outside the enclosure (To) To-Ti=∆T DATA SUBJECT TO CHANGE WITHOUT NOTICE K4 ENVIRONMENTAL CONTROLS M/TAB MOUNTING TEMPLATE AND ASSEMBLY FEATURES-SPECIFICATIONS the installation process by eliminating size Air Conditioner or to a same-size the problem of handling flange-mount- Heat Exchanger. ed Air Conditioners. The solution is provided by following these installation Features steps... • No exposed rails or mounting flanges; aesthetically pleasing while Description • Use the M/TAB as a template to drill conserving cabinet space A highlight of the Panel-Mounted holes for mounting to the enclosure • Reduction in installation time and TrimLine Series is an easy, revolution- • Bolt M/TAB to enclosure labor, with significant cost savings ary system for installing Panel-Mounted • Cut out the Supply and Return • Ease of installation and one piece Air Conditioners and Heat Exchangers openings onto electronic or electrical enclosures. design reduce mounting errors • Hang the Air Conditioner or Heat The M/TAB is standard on all TrimLine • Allows the installer to operate inde- Exchanger on the M/TAB Air Conditioners. This integral system pendently functions as a mounting template, pre- • Secure the unit to the M/TAB • Functions as a pre-installation hanger installation hanger and final assembly The M/TAB also allows for the quick and final assembly bracket bracket.
Load more

Recommended publications
  • Development of a Throttleless Natural Gas Engine
    February 2002 • NREL/SR-540-31141 Development of a Throttleless Natural Gas Engine Final Report John T. Kubesh Southwest Research Institute San Antonio, Texas National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401-3393 NREL is a U.S. Department of Energy Laboratory Operated by Midwest Research Institute ••• Battelle ••• Bechtel Contract No. DE-AC36-99-GO10337 February 2002 • NREL/SR-540-31141 Development of a Throttleless Natural Gas Engine Final Report John T. Kubesh Southwest Research Institute San Antonio, Texas NREL Technical Monitor: Mike Frailey Prepared under Subcontract No. ZCI-9-29065-01 National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401-3393 NREL is a U.S. Department of Energy Laboratory Operated by Midwest Research Institute ••• Battelle ••• Bechtel Contract No. DE-AC36-99-GO10337 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or any agency thereof. Available electronically at http://www.osti.gov/bridge Available for a processing fee to U.S.
    [Show full text]
  • Cooling System
    COOLING SYSTEM A system, which controls the engine temperature, is known as a cooling system. NECESSITY OF COOLING SYSTEM The cooling system is provided in the IC engine for the following reasons: The temperature of the burning gases in the engine cylinder reaches up to 1500 to 2000°C, which is above the melting point of the material of the cylinder body and head of the engine. (Platinum, a metal which has one of the highest melting points, melts at 1750 °C, iron at 1530°C and aluminium at 657°C.) Therefore, if the heat is not dissipated, it would result in the failure of the cylinder material. Due to very high temperatures, the film of the lubricating oil will get oxidized, thus producing carbon deposits on the surface. This will result in piston seizure. Due to overheating, large temperature differences may lead to a distortion of the engine components due to the thermal stresses set up. This makes it necessary for, the temperature variation to be kept to a minimum. Higher temperatures also lower the volumetric efficiency of the engine. REQUIREMENTS OF EFFICIENT COOLING SYSTEM The two main requirements of an efficient cooling system are: 1. It must be capable of removing only about 30% of the heat generated in the combustion chamber. Too much removal of heat lowers the thermal efficiency of the engine. 2. It should remove heat at a fast rate when the engine is hot. During the starting of the engine, the cooling should be very slow so that the different working parts reach their operating temperatures in a short time.
    [Show full text]
  • Unit 11 Cooling Systems
    unit 11 cooling systems During the engine's power stroke, a mixture of air and fuel is burned in the cylinder. This burning creates a lot of heat. Much of this heat is used to push down the piston. Some of the heat goes into the engine's parts. We need a way to take the heat away from these engine parts; otherwise the parts could be damaged. In this unit we will see how engines are cooled. LET'S FIND OUT: When you finish reading and studying this unit, you should be able to: 1. Describe the purpose of the engine cooling system. 2. Describe the operation of the draft-type air-cooling system. 3. Explain the operation of the forced-air-circulation cooling system. 4. List the components used in a liquid-cooling system. 5. Trace the flow of coolant through a liquid-cooling system. DRAFT AIR COOLING The components that get the hottest, such as the cylinder and cylinder head, have fins, Figure There are several ways in which engines are 11-1, to direct the greatest amount of air into cooled. One way is called liquid cooling. A liquid contact with the greatest amount of hot metal. such as water circulates around all the hot engine When the engine is running, heat builds up in the parts. The water takes away the heat. Most auto• cylinder head and cylinder. As the heat goes mobile and outboard engines are cooled this way. through the cylinder head and cylinder, it moves Many small engines are air-cooled. Air goes out into the cooling fins, as shown in Figure 11-2.
    [Show full text]
  • High Temperature Air-Cooled Power Electronics Thermal Design Annual Progress Report Scot Waye
    High Temperature Air-Cooled Power Electronics Thermal Design Annual Progress Report Scot Waye NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency & Renewable Energy Operated by the Alliance for Sustainable Energy, LLC This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications. Management Report NREL/MP-5400-62784 August 2016 Contract No. DE-AC36-08GO28308 High Temperature Air-Cooled Power Electronics Thermal Design Annual Progress Report Scot Waye Prepared under Task No. VTP2.7000 NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency & Renewable Energy Operated by the Alliance for Sustainable Energy, LLC This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications. National Renewable Energy Laboratory Management Report 15013 Denver West Parkway NREL/MP-5400-62784 Golden, CO 80401 August 2016 303-275-3000 • www.nrel.gov Contract No. DE-AC36-08GO28308 NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof.
    [Show full text]
  • All About Intercooling
    ALL ABOUT INTERCOOLING A COMPREHENSIVE GUIDE TO INTERCOOLING BY GEORGE SPEARS ALL ABOUT INTERCOOLING TABLE OF CONTENTS I. The Advantages of Intercooling II. Intercooler Basics A. What is an intercooler and what does it do? B. Vacuum furnace brazing C. C.A.B. III. Types of Assemblies and Construction of Intercoolers A. Bar and plate type B. Welded or extruded tube type IV. Air / Liquid Intercoolers V. Intercooler Efficiency or Effectiveness VI. Sizing the Intercooler and Engineering the System VII. Intercooler Performance and Testing VIII. Engine Fuel System IX. Intercooler Sizes and Fin Configuration for Special Purposes X. Oversized Intercoolers XI. Charge Air Cooling by Refrigeration XII. Water Injection XIII. Intercooler Thickness XIV. Welding Aluminum Intercooler Cores and Other Aluminum Components ALL ABOUT INTERCOOLING THE ADVANTAGES OF INTERCOOLING Intercooling a supercharged or turbocharged engine has several advantages. The first and most frequently considered advantage is increased air density with consequential increase in horsepower. As will be shown in this booklet, horsepower can be increased by as much as 18 % or more. Some of the other bene- fits of intercooling are in- creasing the detonation thresh- old. With a good intercooler you can generally run three to four ad- ditional lbs of boost with the same octane gasoline and ignition timing without ex- periencing detona- tion. An inter- cooler slightly reduces the thermal load across the en- gine. When the inlet valve closes, the charge air inside the cylinder can be as much as 175° F to 200° F cooler than a non-intercooled engine, depending on the effectiveness of the intercooler.
    [Show full text]
  • Cooling System Overview the Cooling System
    Cooling System Overview Below is an explanation of this system's operation The Cooling System The purpose of the engine's cooling system is to remove excess heat from the engine, to keep the engine operating at its most efficient temperature, and to get the engine up to the correct temperature as soon as possible after starting. Ideally, the cooling system keeps the engine running at its most efficient temperature no matter what the operating conditions are. As fuel is burned in the engine, about one-third of the energy in the fuel is converted into power. Another third goes out the exhaust pipe unused, and the remaining third becomes heat energy. A cooling system of some kind is necessary in any internal combustion engine. If no cooling system were provided, parts would melt from the heat of the burning fuel, and the pistons would expand so much they could not move in the cylinders (called "seize"). The cooling system of a water-cooled engine consists of: the engine's water jacket, a thermostat, a water pump, a radiator and radiator cap, a cooling fan (electric or belt- driven), hoses, the heater core, and usually an expansion (overflow) tank. Fuel burning engines produce enormous amounts of heat; temperatures can reach up to 4,000 degrees F when the air-fuel mixture burns. However, normal operating temperature is about 2,000 degrees F. The cooling system removes about one-third of the heat produced in the combustion chamber. The exhaust system takes away much of the heat, but parts of the engine, such as the cylinder walls, pistons, and cylinder head, absorb large amounts of the heat.
    [Show full text]
  • Study of Injection Method for Maximizing Oil-Cooling Performance of Electric Vehicle Motor with Hairpin Winding
    energies Article Study of Injection Method for Maximizing Oil-Cooling Performance of Electric Vehicle Motor with Hairpin Winding Taewook Ha 1 and Dong Kyu Kim 1,2,* 1 School of Mechanical Engineering, Chung-Ang University, Seoul 06974, Korea; [email protected] 2 School of Computer Science and Engineering, Chung-Ang University, Seoul 06974, Korea * Correspondence: [email protected]; Tel.: +82-02-820-5192 Abstract: The oil injection method was studied to maximize the cooling performance of an electric vehicle motor with a hairpin winding. The cooling performance of the motor using the oil cooling method is proportional to the contact area of the oil and the coil. A numerical analysis was conducted to examine the effect of the spray nozzle type on the oil flow. The dripping nozzle forms the thickest oil film on the coil, making it the most effective for cooling of hairpin-type motors. Subsequently, an experimental study was conducted to optimize the nozzle diameter and number of nozzles. When the inlet diameter and number was 6.35 mm and 6, the oil film formation rate was 53%, yielding the most uniform oil film. Next, an experiment was performed to investigate the effects of the oil temperature and flow rate on the oil flow. The oil film formation rate was the highest (83%) when the oil temperature was 40 ◦C and the flow rate was 6 LPM. Keywords: electric vehicle; hairpin winding; motor cooling; oil cooling; injection method 1. Introduction Citation: Ha, T.; Kim, D.K. Study of In recent years, interest in environmental issues has increased, accelerating the de- Injection Method for Maximizing velopment of electric vehicles and increasing their demand.
    [Show full text]
  • Engine Cooling Systems
    Emergency Diesel Generator Engine Cooling Systems 6.0 ENGINE COOLING SYSTEMS If this heat is not removed, engine internal temperatures would soon reach a point of This chapter identifies the major component damage and engine failure. All components of the diesel engine cooling commercial diesel engines use some form systems and explains how each system is of cooling system to absorb this heat and necessary for reliable operation of the transfer it to a heat absorbing medium engine. outside of the engine. Learning Objectives Many modern engines are equipped with turbocharging systems to provide enough As a result of this lesson, you will be able to: air to allow the burning of the fuel required to produce the required power. The 1. State the purpose of a diesel engine turbocharging system adds heat to the jacket water cooling system. combustion air. In order to ensure that sufficient pounds of air are provided for the 2. Identify the major components of a combustion of the fuel, it is necessary to typical diesel engine jacket water cool the combustion air before it goes into cooling system and describe the the engine cylinders (to maintain the air operation of each. density). This is done by means of a radiator-like heat exchanger called the air 3. State the purpose and describe the intercooler, or aftercooler, and mounted in operation of the jacket water keepwarm the piping between the turbocharger and circulation system as is commonly compressor outlet and the engine air used on nuclear application diesel manifold. This radiator removes excess engines. heat from the combustion air.
    [Show full text]
  • Air Cooling Technology for Advanced Power Electronics and Electric Machines
    Air Cooling Technology for Advanced Power Electronics and Electric Machines U.S. Department of Energy Annual Merit Review Desikan Bharathan National Renewable Energy Laboratory Friday May 22, 2009 ape_12_bharathan This presentation does not contain any proprietary, confidential, or otherwise restricted information NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy operated by the Alliance for Sustainable Energy, LLC Overview Timeline Barriers • Project start date: FY06 • 15 year life requirement • Project end date: FY12 • High parasitic power • Percent complete: 40% • Larger volume Budget Partners • Total project funding • Interactions – DOE share: $1350k • FreedomCAR Electrical & Electronics Technical Team – Contractor share: $0.00 • Delphi, PowerEx, Semikron • FY08 Funding: $350k • Project lead: NREL • FY09 Funding: $350k National Renewable Energy Laboratory 2 Innovation for Our Energy Future Project Objectives • Develop air cooling technology that will enable overall system cost reductions to meet the FreedomCAR technical targets ($8/kW by 2020). • Eliminate liquid coolant loops. • Enable heat rejection directly to the sink, namely, ambient air. Simplify the system. • Maintain die temperature below specified operating limits to assure long-term reliability. National Renewable Energy Laboratory 3 Innovation for Our Energy Future Project Milestones FY2008 • Milestone: Conduct tests with prototype test articles and validate CFD models – Submit a report on AN ASSESSMENT OF AIR COOLING FOR USE WITH findings AUTOMOTIVE POWER ELECTRONICS Desikan Bharathan, Kenneth Kelly National Renewable Energy Laboratory 1617 Cole Boulevard, Golden, Colorado, 80401 FY2009 Phone: (303) 887-4215 Fax: (303) 275-4415 Email: [email protected] • Milestone: Incorporate air cooling in power electronic modules and test and validate models – Report due September 2009.
    [Show full text]
  • INDUSTRIAL CCTV SYSTEMS Catalog September 2016 Rev.00
    Via dei Pioppi, 16d 20024 Garbagnate Milanese, Milan (Italy) T +39.02.9952517 F +39.02.40700322 [email protected] www.telea.com INDUSTRIAL CCTV SYSTEMS Catalog September 2016 rev.00 High Temperature Camera Systems - Furnace Cameras - Water & Air Cooled Camera Housing INDUSTRIAL CCTV SYSTEMS ► HIGH TEMPERATURE CAMERA SYSTEMS UP TO 90°C Page 1 - Air cooled pressurized camera housing - AIRTEC ► HIGH TEMPERATURE CAMERA SYSTEMS UP TO 400°C Page 3 - Air & water cooled pressurized camera housing - ACQUATEC ► HIGH TEMPERATURE CAMERA SYSTEMS UP TO 2200°C Page 7 - Cameras for high temperature video systems - CAMTEC Page 13 - High temperature vision systems - SONDATEC Page 18 - Protection devices - OUTEC & INTEC Page 21 - Control cabinet - CABTEC ► ACCESSORIES Page 29 - Connection kit - KITEC ► HIGH TEMPERATURE CAMERA SYSTEMS UP TO 90°C Product code configuration table 0 8 X A B C Length Power Supply Window 3 = 300 mm 0 = 230Vac 0 = Flat Glass 0 8 X A B C 5 = 350 mm 2 = 12Vdc / 24Vac 1 = Convex Glass 3 = PoE 3 = Germanium (30Ø usable) 9 = Ø 5 = Germanium AIR COOLED PRESSURIZED CAMERA HOUSING (55Ø usable) 9 = without window • Air cooled pressurized housing AIRTEC with special AIRTEC with POE Injector Germanium window • Useful for Analogue, IP or Infrared camera • Up to 90°C AIR08Xxxx AIR08X391 HIGH TEMPERATURE CAMERA SYSTEMS UP TO 90°C Telea Tecnovision Industrial - Catalog September 2016 - Page 1 di 31 HIGH TEMPERATURE CAMERA SYSTEMS UP TO 90°C AIR08X007 Complete industrial camera system with varifocal lens DC Auto Iris 3-10.5 mm F1.4 IR. 1.3 Mega Pixel sensor, high resolution >800 lines, Ultra Wide Dynamic Range specially designed for applications with high contrast level, and in presence of infrared irradiation.
    [Show full text]
  • Bergen B Gas Engine ...The Power of Experience Tomorrow’S Gas Engine Technology
    Bergen B gas engine ...the power of experience Tomorrow’s gas engine technology Delivered today... cleanly, efficiently and profitably Rolls-Royce, a leading global power systems company with an unrivalled track- record on land, at sea and in the air, began to focus on gas engine technology in 1984. Since then we have developed, manufactured and installed more than 600 lean-burn gas engines for industrial power stations and municipal uses. Today our products stand at the forefront of technology and quality. Since we delivered our first gas engine in 1991 our engines have logged millions of operating hours in a broad range of applications and environments. Today the latest generation of our B-gas engine still represents the future in terms of stringent emissions requirements, highest possible electrical and heat recovery, extreme reliability and high power. Based on the successful technology of the K-gas engine, today’s B-gas engine sets the standards to which all competitors aspire. The world’s most efficient gas engine The B-gas engine’s design This philosophy draws on over 60 years of reciprocating philosophy is to achieve engine experience and the strengths of our very successful K-gas engine family, first delivered into increasingly stringent exhaust service in 1991. We took the latest B32:40 hardware and emission standards, industry- redesigned and modified it for the demands of the gas leading electrical and heat engine market. We also embraced the best of K-gas recovery efficiency and high combustion and governing technology. The outcome: today’s B-gas engine available in 9- cylinder in-line and and dependable power levels to 12V, 16V and 20V cylinder configurations.
    [Show full text]
  • Focus on Engine Cooling – Dupont Has Cool Solutions to Hot Engines
    Focus on engine cooling – DuPont has cool solutions to hot engines In the quest for better fuel economy and cleaner emissions, the global auto industry is pushing designers, engineers and materials suppliers to come up with continuous improvements in engine efficiency, and new ways to take weight out of the vehicle. Replacement of metals by plastics is an important part of the solution. However, there are trade offs, particularly in engines. To achieve both greater efficiency and weight savings, engines are downsizing — but they are also getting hotter, particularly with the growth of turbo charging. As a result, engine cooling is becoming more important than ever. Modern engines are cooled by complex air and liquid cooling systems that manage the flow of high temperature air, gases and coolants, and house critical thermal management components. Plastics, many supplied by DuPont, are playing an increasingly important role in key cooling system parts including thermostat and heater housings, outlet and inlet ports, valves, cross-overs, coolant pumps, water jacket spacers, charged air coolers (CAC) and exhaust gas recirculation (EGR) coolers. Materials requirements Air and liquid engine cooling environments are tough on materials and components. Many standard plastics and elastomers struggle to meet new specifications for temperature and coolant resistance, mechanical strength, and life-of-vehicle durability coupled with industry expectations for weight saving and cost effectiveness. Air systems with EGR coolers demand superior resistance to chemicals, aggressive gases and hot air at up to 210°C with excursions to 230°C — and the trend is higher temperatures, increased acidity, dirtier gases and rising pressures.
    [Show full text]