hvac equipment and systems

... 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 ... piping, tanks, and vessels • Pumps, compressors, and simple systems • Turbines and motors • Heat exchangers, cooling towers, and simple systems • Steam generation, fired heaters, and systems • Process ... 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,...

Ngày tải lên: 15/08/2013, 07:50

... underground salt domes, caverns, and other belowground storage systems Process technicians are required to safely operate and maintain each of the complex storage and transfer systems in a tank farm Figure ... senior technician to learn basic line-ups, standard operating procedures, safety rules and regulations, and sampling techniques Process tanks and storage systems are equipped with the latest in modern ... 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...

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 ... Shutdown, and Troubleshooting of Compressor Systems Tables 5.1 and 5.2 illustrate typical startup and shutdown procedures Tables 5.3 and 5.4 illustrate troubleshooting charts for identifying and solving ... 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

... distillation systems, and reaction systems They can be used for such processes as laminating, vulcanizing, extrusion, firefighting, and flare systems; and to provide cooling or heating to process equipment ... 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...

Ngày tải lên: 21/08/2013, 10:47

... technicians and instrument and electrical, mechanical, safety, and engineering personnel In order to read a P&ID, the technician needs an understanding of the equipment, instrumentation, and technology ... 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 ... beams, and foundation uses foundation drawings (Figure 12.5) Concrete and steel specifications are designed to support equipment, integrate underground piping, and provide support for exterior and...

Ngày tải lên: 23/08/2013, 14:30

... devices such 356 Reactor Systems as high-pressure relief valves and alarms, high-temperature alarms and emergency cooling, fire control systems, and toxic chemical detection systems are available ... 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 Systems ... systems, process variable alarms, and automatic shutdown controls Quench systems are designed to stop the reaction process Pressure relief systems are sized to handle and contain any release from...

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 ... Plastics Systems OBJECTIVES After studying this chapter, the student will be able to: • • • • • Describe a typical plastics plant’s equipment and operation Review the granule storage and feed systems ... 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

... building’s HVAC equipment are influenced by numerous factors; and those included in this study were local climate, building type, building size, HVAC equipment capacity, geographical location, and on-site ... for the HVAC equipment, a ‘size modifier’ adjustment was made to account for this difference In order to estimate the HVAC equipment s manufacturing and production (M&P) GHG emissions, the HVAC ... 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...

Ngày tải lên: 05/09/2013, 15:28

... 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 ... 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...

Ngày tải lên: 05/11/2013, 12:15

... http://www.tiaonline.org, or contact Andy Dryden at (703) 907-7633 Category Cabling: A Standards and Systems Overview Category Cabling: A Standards and Systems Overview Published by the Category Consortium Introduction ... category cabling systems — has assisted in development of generic standards primarily for balanced twisted-pair cabling systems These standards cover balanced twisted-pair cable and associated ... category 5, 5e and standards requirements Key features of the category standard Review of standards applicable to category Category market penetration TIA press release on category standard References...

Ngày tải lên: 10/12/2013, 02:15

... http://www.tiaonline.org, or contact Andy Dryden at (703) 907-7633 Category Cabling: A Standards and Systems Overview Category Cabling: A Standards and Systems Overview Published by the Category Consortium Introduction ... category cabling systems — has assisted in development of generic standards primarily for balanced twisted-pair cabling systems These standards cover balanced twisted-pair cable and associated ... category 5, 5e and standards requirements Key features of the category standard Review of standards applicable to category Category market penetration TIA press release on category standard References...

Ngày tải lên: 20/12/2013, 22:15

... Deterministic Signal (b) Random Signal 1.1.2.7 Right-Handed vs Left-Handed A right-handed signal and left-handed signal are those signals whose value is zero between a given variable and positive or negative ... discrete-time signals, like e-mail, is accomplished with analog signals and systems Understanding how discrete-time and analog signals and systems intertwine is perhaps the main goal of this course 21 ... 2.2.3 Linear Time-Invariant (LTI) Systems Certain systems are both linear and time-invariant, and are thus referred to as LTI systems Linear Time-Invariant Systems (a) (b) This is a combination...

Ngày tải lên: 22/12/2013, 12:16

... is some known function of integration x and the parameter α , a and b are constants independent of x and α , and the pardF tial derivative ∂f ⁄ ∂α exists and it is continuous, then = dα 2-6 ... 2e – 2t – 20 δ ( t – ) Signals and Systems with MATLAB Applications, Second Edition Orchard Publications 1-23 Chapter Elementary Signals NOTES 1-24 Signals and Systems with MATLAB Applications, ... } = s ⎧ L ⎨ ⎩ t ⎫ ∫0 f ( τ ) dτ ⎬ = ⎭ F(s) -s (2.26) and the proof of (2.23) follows from (2.25) and (2.26) Signals and Systems with MATLAB Applications, Second Edition Orchard Publications...

Ngày tải lên: 19/01/2014, 18:20

... Signals and Systems with MATLAB® Applications Second Edition Steven T Karris Students and working professionals will find Signals and Systems with MATLAB® Applications, ... Edition, to be a concise and easy-to-learn text It provides complete, clear, and detailed explanations of the principal analog and digital signal processing concepts and analog and digital filter design ... Equations • The Impulse Response and Convolution • Fourier Series • The Fourier Transform • Discrete Time Systems and the Z Transform • The DFT and The FFT Algorithm • Analog and Digital Filters • Introduction...

Ngày tải lên: 19/01/2014, 18:20

... SIGNALS AND SYSTEMS (4 Fig 1-25 [CHAP SIGNALS AND SYSTEMS 1.8 Show that (a) If x(t) and x [ n ] are even, then (1.75a) ( I 75b) ( b ) If x(t) and x[n] are odd, then x(0) = and ~ ( rdr = ) and x[O] ... Since x ( t ) and x [ n ] are odd, that is, x( - t ) = - x ( t ) and x [ - n ] X ( - ) = -x(O) and = -x[n], x[-01 = -x[O] we have CHAP 11 SIGNALS AND SYSTEMS Hence, Similarly, and in view of ... SIGNALS AND SYSTEMS [CHAP common multiple of T, and T2, and it is given by Eq (1.84) if the integers m and k are relative prime If the ratio T,/T, is an irrational number, then the signals x,(t) and...

Ngày tải lên: 19/01/2014, 19:20

... and its application to discrete-time LTI systems The Fourier analysis of signals and systems is treated in Chapters and Chapter considers the Fourier analysis of continuous-time signals and systems, ... System with single or multiple input and output signals G CHAP 11 SIGNALS AND SYSTEMS B Continuous;Time and Discrete-Time Systems: If the input and output signals x and p are continuous-time signals, ... causal Examples of noncausal systems are Note that all memoryless systems are causal, but not vice versa 18 SIGNALS AND SYSTEMS [CHAP E Linear Systems and Nonlinear Systems: If the operator T...

Ngày tải lên: 19/01/2014, 19:20

... SIGNALS AND SYSTEMS (4 Fig 1-25 [CHAP SIGNALS AND SYSTEMS 1.8 Show that (a) If x(t) and x [ n ] are even, then (1.75a) ( I 75b) ( b ) If x(t) and x[n] are odd, then x(0) = and ~ ( rdr = ) and x[O] ... Since x ( t ) and x [ n ] are odd, that is, x( - t ) = - x ( t ) and x [ - n ] X ( - ) = -x(O) and = -x[n], x[-01 = -x[O] we have CHAP 11 SIGNALS AND SYSTEMS Hence, Similarly, and in view of ... SIGNALS AND SYSTEMS [CHAP common multiple of T, and T2, and it is given by Eq (1.84) if the integers m and k are relative prime If the ratio T,/T, is an irrational number, then the signals x,(t) and...

Ngày tải lên: 19/01/2014, 20:20

... is some known function of integration x and the parameter α , a and b are constants independent of x and α , and the pardF tial derivative ∂f ⁄ ∂α exists and it is continuous, then = dα 2-6 ... 2e – 2t – 20 δ ( t – ) Signals and Systems with MATLAB Applications, Second Edition Orchard Publications 1-23 Chapter Elementary Signals NOTES 1-24 Signals and Systems with MATLAB Applications, ... } = s ⎧ L ⎨ ⎩ t ⎫ ∫0 f ( τ ) dτ ⎬ = ⎭ F(s) -s (2.26) and the proof of (2.23) follows from (2.25) and (2.26) Signals and Systems with MATLAB Applications, Second Edition Orchard Publications...

Ngày tải lên: 25/01/2014, 13:20