lighting electrical equipment and people

... as and when required 2 Devices, symbols, and circuits Objectives • To understand basic electrical symbols • To understand power and control circuits • To read electrical drawings 2.1 Devices and ... troubleshooting electrical equipment and control circuits, it is important to understand the basic principles on which the electrical equipment works The following sections will outline the basic electrical ... symbols 24 2.2 Electrical circuits 24 2.3 Reading and understanding electrical drawings 28 2.4 Reading and understanding ladder logic 36 2.5 Wires and terminal numbering...

Ngày tải lên: 07/03/2014, 08:20

... power plant has two natures iR and iL Equipment such as motors, welders, and fluorescent lights require both types of currents However, equipment such as heaters and incandescent bulbs require the ... proportional to the electrical resistivity of the material The thickness of the laminations is between 0.5 and mm in power equipment and between 0.01 and 0.5 mm in electronic equipment The volume ... terminals a and b′, b and c′, and c and a′ are joined to form the delta connection In the wye connection (Fig 1.29a), the voltages across the individual phases are identified as Va′a, Vb′b, and Vc′c...

Ngày tải lên: 27/12/2013, 13:18

... widespread price fixing and antitrust prosecution of electrical- equipment companies and executives, and an opportunity existed to estimate the impacts of the conspiracy and of the remedies Using ... historical standards, these penalties were severe, likely to have a significant impact on seller For a description of the electrical equipment conspiracies, see Herling (1962) and Walton and Cleveland ... excess demand, while negative deviations indicate idle plant and equipment We expect profit/sales ratios to be positively related to excess demand, as measured by GROWDEV.l Electrical- equipment- product...

Ngày tải lên: 23/03/2014, 23:20

... a t e random number i n [ , ) ∗/ double r e t = ( double ) rand ( ) ; return r e t / (RAND MAX+1); } i n t s a m p l e g e o m e t r i c r v ( double p ) { double q ; i n t n = ; { q = rand double ... done and ready to compile your code Write the command line that you should use to compile this code (using gcc) Let’s call the desired output program dictionary.o Problem 3.3 Both the for loop and ... is a unix utility that display the count of characters, words and lines present in a file If no file is specified it reads from the standard input If more than one file name is specified it displays...

Ngày tải lên: 25/04/2013, 08:07

... Compressor systems and operations • Heat exchanger and cooling tower systems and operations • Steam generation and furnace systems and operations • Reactor systems and operations Key concepts and learning ... composed of refineries and plants for petrochemical, paper and pulp, power generation, and food processing Process technicians inspect and maintain equipment, place and remove equipment from service, ... withstand 10 Stationary Equipment high-pressure situations; carbon seals and labyrinth seals cannot Shaft seals minimize air leakage into and out of the equipment; keep dirt, chemicals, and water...

Ngày tải lên: 15/08/2013, 07:50

... exceeded and is provided for equipment protection and safety of personnel Blocking in equipment unprotected by relief valves, unofficially increasing the relief valve set pressure, and blocking ... and welding properties required Most of the equipment used in a plant is made of this versatile material The steel used for equipment is low in carbon (0.3% or less), sulfur, and phosphorus and ... box and packing gland hold packing firmly against the shaft and casing A slight bit of internal leakage keeps the packing lubricated and cool The packing material, located between the casing and...

Ngày tải lên: 16/08/2013, 15:29

... have a flexible pressure range and overall capacity, low power cost, and high efficiency rating They can handle density and gas composition changes, and small volumes and can deliver high pressures ... Membranes are designed to be durable and tough and able to withstand high temperatures and a variety of conditions Diaphragm compressors can generate very high pressures and are used to compress hydrogen, ... valves and pressure relief valves are used to relieve excess pressure that could damage operating equipment and hurt operating personnel These valves are sized to handle specific flow rates and...

Ngày tải lên: 19/08/2013, 10:47

... hold the baffles in place and prevent vibration and excessive tube movement Nozzles and Accessory Parts Shell -and- tube inlet and outlet nozzles are sized for pressure drop and velocity considerations ... shell and tube, reboiler, plate and frame, air cooled, and spiral The shell -and- tube heat exchanger is the most common in the process industry Shell -and- tube heat exchangers are designed to handle ... between them and how each applies to heat exchangers Which is (are) the most critical and why? Draw and label a hairpin heat exchanger Draw and label a shell -and- tube heat exchanger Draw and label...

Ngày tải lên: 20/08/2013, 10:39

... water and steam flow rates and temperatures and water level in the boiler The operator also checks for smoke and checks burner and flame pattern The operator maintains good housekeeping and unit ... the trap and comes into contact with the bellows Condensate causes the bellows to contract and open Steam causes the bellows to expand and close Bellows traps can handle condensate and noncondensable ... Furnaces Broken Supports and Guides Broken supports and guides tend to fall to the furnace floor and result in sagging or bowing tubes The falling supports and guides can also hit and damage a burner...

Ngày tải lên: 21/08/2013, 10:47

... RX-106 equipment, developing checklists, catching samples, and performing startups and shutdowns Electrical Drawing Electrical drawings (Figure 12.7) include symbols and diagrams that depict an electrical ... Diagrams unit and to all electrical equipment These diagrams show the different voltage levels in the unit, electrical equipment such as transformers, circuit breakers, fuses, and motors and horsepower ... material codes, and steam traps Pumps and Tanks Pumps and tanks come in a variety of designs and shapes Common pump and tank symbols are shown in Figure 12.11 Compressors, Steam Turbines, and Motors...

Ngày tải lên: 23/08/2013, 14:30

... excessive pressure drops, and impurities in the feed or product streams The type and quantity of instrumentation are usually determined by past data and experience and from research and development Reactor ... many existing industries and created new ones The steel and metal fabrication and manufacturing, glass, machining, rubber, petroleum, concrete and stone industries, and many others had to develop ... relief valves and alarms, high-temperature alarms and emergency cooling, fire control systems, and toxic chemical detection systems are available for most hazardous conditions and should be installed...

Ngày tải lên: 23/08/2013, 14:47

... inexpensive and readily available, and it should not be hazardous or corrosive Equipment Basically, the equipment for commercial operations is designed to ensure contact between the solvent and the ... adhesives; hard and soft plastic; plastic fibers and fabric; and resistant, decorative, and transparent plastic Various methods are used in this process In extrusion, solid resins are melted and pushed ... adhesives; hard and soft plastic; plastic fibers and fabric; and resistant, decorative, and transparent plastic Various methods are used in this process In extrusion, solid resins are melted and pushed...

Ngày tải lên: 27/08/2013, 07:28

... primarily to people (1291) and related ventilation and, to a lesser amount, the load from internal equipment and lights For example, the hospital average lighting and plug loads were 12.68 W/m2 and 23.18 ... along with the “Machinery and Engines” and “Air conditioning, Refrigeration, and Warm Air Heating Equipment for the appropriate industry and sector categories Results and discussion The following ... operational and M&P, from commercial buildings’ HVAC equipment in different geographical locations and climate regions; and, for various building types and fuel sources Methodology and approach...

Ngày tải lên: 05/09/2013, 15:28

... connection between its corporate brand and product brands since 1997, though, according to Bek et al., it has had problems in doing so and in establishing a strong internal brand In other words, it seems ... as Guinness in Ireland Thus community involvement is embedded into the fabric of Diageo and in its day-to-day business operations This 332 Corporate Reputations, Branding and People Management ... damage 328 Corporate Reputations, Branding and People Management Criticisms of measurement While the idea of a triple bottom line has appeal to a number of firms and government departments that have...

Ngày tải lên: 18/10/2013, 00:15

... challenges and opportunities posed by reputation management and 338 Corporate Reputations, Branding and People Management corporate branding, as well as the related issues of CSR and corporate ... Reputations, Branding and People Management Groysberg, B., Nanda, A and Nohria, N (2004) The risky business of hiring stars, Harvard Business Review, 82 (May–June), 93–100 Hagel III, J and Seely-Brown, ... growth, where big brands tend to get bigger, medium-sized brands can be squeezed and certain niche brands prosper The key challenge is to maximize value growth through brand strength and superior customer...

Ngày tải lên: 20/10/2013, 19:15

... analysing and matching, through its work, the emerging success requirements and differentiators for the organization Source: Ashton and Lambert, 2005 346 Corporate Reputations, Branding and People ... thinking, and ensuring corporate governance Source: Adapted from Ulrich, 1996; Ulrich and Brockbank, 2005 348 Box 10.3 Corporate Reputations, Branding and People Management Elective Affinity and HR ... organizational design, development and change, and talent management ■ Organizational capabilities and human capital, and making strong inputs to strategic issues by influencing and shaping the decisions...

Ngày tải lên: 20/10/2013, 19:15

... Reputations, Branding and People Management influence and involvement of companies, environmental issues, including climate change, pensions and retirement benefits, healthcare and other employee ... employees and potential employees most value, what they would choose and advocate particular employer brands? ■ What are the best means of engaging and communicating brand values, and how can ... rhetoric and spin with action Questions for HR leadership ■ To what extent does your HR function understand and systemat- ically use data on geo-demographics and changing consumer preferences and...

Ngày tải lên: 24/10/2013, 18:15

... techniques and thinking about leadership and strategy best achieved through systematic assessment and planning There will also be HR leaders and 368 Corporate Reputations, Branding and People Management ... calculating leaders and managers who manage purely at the informational level, 370 Corporate Reputations, Branding and People Management thus running the risk of dehumanizing organizations and being criticized ... leadership that understands and is able to contribute to the corporate agenda – those agenda items that make organizations different (corporate reputations and corporate brands) and those items that...

Ngày tải lên: 24/10/2013, 18:15

... Connexion: Causation, Realism, and David Hume (Oxford: Clarendon Press, 1989) For an alternative account of Hume’s position, see Tom L Beauchamp and Alexander Rosenberg, Hume and the Problem of Causation ... to identify mental states and events with physical states and events in my Kinds of Being, pp 113–14 and pp 132–3 Minds, bodies and people 37 though even this analogy would appear to be imperfect ... physical space, whereas we have none of these On the other hand, we have thoughts and feelings – states of consciousness – whereas our bodies and brains lack these altogether What reasons did Descartes...

Ngày tải lên: 01/11/2013, 07:20

... task to be handled by a specific RF design and subsequently try to figure out what kind of equipment is needed and how it should be organized My emphasis is on processes and phenomena, and I often ... include amplifier [11] and oscillator [12] design principles, power supplies and voltage regulation [13], and different diode detectors Some understanding of elementary logic design and microwave materials ... Eskelinen, Pekka Introduction to RF equipment and system design.—(Artech House radar library) Radio Equipment and supplies Wireless communications systems—Design and construction Radio frequency...

Ngày tải lên: 05/11/2013, 12:15