pumps compressors amp turbines

... 146 Vacuum pumps in series 147 Names and definitions of vacuum pumps and their accessories 150 Liquid Ring Vacuum Pumps and Liquid Ring Compressors 157 Liquid ring vacuum pumps and compressors ... Generation 111 Overview of vacuum pumps 111 Description of vacuum pumps and their functioning 111 Gas transfer vacuum pumps 111 Gas binding vacuum pumps 120 Operating fields of pumps acc to suction pressure ... similarity law for liquid ring gas pumps 189 Pump performance and power consumption of liquid ring machines 191 Characteristic curves of liquid ring vacuum pumps and compressors 193 Cavitation 195...

Ngày tải lên: 02/04/2014, 15:36

... application for gear or screw pumps DIAPHRAGM PUMPS Diaphragm pumps are reciprocating, positive displacement type pumps, utilizing a valving system similar to a plunger pump These pumps can deliver a small, ... displacement pumps than for centrifugal pumps, since the discharge of most positive displacement pumps should not be throttled This control method should be used with caution for centrifugal pumps, ... class of pumps is of interest in applications where conventional pumps and separate compressors with or without separate pipelines are not economically feasible Two types of centrifugal pumps have...

Ngày tải lên: 12/06/2014, 16:47

... OP -AMP_ Khuếch đại ứng dụng 7.2.3 Op -amp phân cực nguồn đơn: Phần đặc tính mạch khuếch đại khảo sát op -amp phân cực nguồn đối xứng Thực tế, để tiện thiết kế mạch sử dụng, khơng cần thiết op -amp ... Tử ứng tần số tự nhiên Op -Amp 741 Chương 7: OP -AMP_ Khuếch đại ứng dụng * Băng tần độ lợi đơn vị (unity-gain bandwidth) Là băng tần op -amp có độ lợi vòng hở Thí dụ op -amp 741 B=1MHz * Thời gian ... Khi Zf Zi điện trở op -amp có tính khuếch đại điện chiều Trương Văn Tám VII-6 Mạch Điện Tử Chương 7: OP -AMP_ Khuếch đại ứng dụng 7.2.2 Mạch khuếch đại khơng đảo: (Non_inverting Amplifier) Dạng mạch...

Ngày tải lên: 10/10/2012, 15:51

Ngày tải lên: 05/03/2013, 17:09

... [1] is used The investigation covers all three major types of steam turbines, that is, condensing, back-pressure and extraction turbines, and also different power capacity sizes for the turbine, ... In section 2, a description of the existing CSP technologies that can be integrated with steam turbines for electricity generation is provided In section 3, the input and output interfaces of ... steam turbine capacities is carried out The cost of electricity of CSP plants integrated with steam turbines is simulated in section Finally, the conclusions are summarized in section CSP technologies...

Ngày tải lên: 05/09/2013, 14:59

... generated power; this effect is consistent with that found in the recent literature for shrouded wind turbines [6, 7] It is important to note that Cp is calculated by normalizing it by the turbine area ... existing silos on the farms can be utilized for generating power from the wind by installation of wind turbines inside them Although a simple model (actuator disc model) of a wind turbine has been employed ... difference between configuration 1A and 1B is in the diameters of the two silos Dc and diameters of the turbines Da Table provides the power generated by the turbine, the power available in the turbine...

Ngày tải lên: 05/09/2013, 14:59

... sub-classified as rotating pumps (gears, lobes, vanes, helicoidal, bobbins, screws, peristaltic) and as pistons or alternative pumps (pistons, diaphragm, membrane) 2.4 Pumps as turbines When a pump ... conventional turbines have The pumps are receptor hydraulic machines which transfer energy to the fluid with the purpose to carry it They can be classified in two great groups: turbo pumps and volumetric ... motor engines (turbines) and in receptor engines (pumps) [2] Despite the place where they work, the motor engines divide themselves in two different groups: action and reaction turbines When the...

Ngày tải lên: 05/09/2013, 15:28

... in the sample is six persons and the minimum number is two persons Figure Classification of the sample based on the heating method For the purpose of the study, the residences in the sample were ... in the sample for (a) Test group (b) Control group 2.2 Overview of Energy Consumption After investigating the energy consumption trends of the sample, it is found that house with heat pumps consume ... combined methods for heating The average size of the household in the selected sample for both the test (homes that use heat pumps) and the control (homes that use other methods for heating) groups...

Ngày tải lên: 05/09/2013, 16:10

... general a HAWT downstream of an array of turbines may encounter multiple wakes due to several turbines upstream of it Since various wakes of the array of turbines form a mixed wake, the kinetic ... M.M Placement of Wind Turbines Using Genetic Algorithms Renewable Energy Vol 30, pp 259-270, 2005 [3] Wan C., Wang J., Yang G., Li X and Zhang X Optimal Micro-Siting of Wind Turbines by Genetic ... various wake deficits This results in the following expression for the velocity downstream of N turbines [1]: ISSN 2076-2895 (Print), ISSN 2076-2909 (Online) ©2012 International Energy & Environment...

Ngày tải lên: 05/09/2013, 17:03

... Signal Amplifiers, has six sections authored by Walt Jung and Walt Kester These sections are audio amplifiers, buffer amplifiers/driving capacitive loads, video amplifiers, communication amplifiers, amplifier ... detailed narrative of op amp history xvi CHAPTER Op Amp Basics ■ Section 1-1: Introduction ■ Section 1-2: Op Amp Topologies ■ Section 1-3: Op Amp Structures ■ Section 1-4: Op Amp Specifications ■ Section ... Section 2-1: Instrumentation Amplifiers 123 Section 2-2: Programmable Gain Amplifiers 151 Section 2-3: Isolation Amplifiers 161 Chapter 3: Using Op Amps with Data Converters...

Ngày tải lên: 04/10/2013, 17:42

... next Gas turbines are used to power aircraft and land vehicles, to drive generators (alternators) to produce electric power, and to drive other devices, such as pumps and compressors Gas turbines ... Larger gas turbines use axial types; smaller ones use radial outflow centrifugal compressors Some smaller gas turbines use both—an axial flow compressor upstream of a centrifugal stage Axial compressors ... development of regenerators 57.1.3 Component Characteristics and Capabilities Compressors Compressors used in gas turbines are of the dynamic type, wherein air is continuously ingested and raised...

Ngày tải lên: 18/10/2013, 10:15

Ngày tải lên: 22/10/2013, 12:15

... phenomena controlling wet steam flow in turbines Flow Field Considerations Substantial advances have been achieved in the aerothermodynamic processes of low-pressure turbines A significant factor is ... availability Physically, a practical ammonia/water system requires a number of heat exchangers, pumps and piping, and a turbine that is smaller than its steam counterpart due to the higher pressure ... for superheated steam and wet steam, respectively The range of Mach numbers experienced in steam turbines can be put in terms of the wheel speed Mach number, that is, the rotor tangential velocity...

Ngày tải lên: 25/10/2013, 13:15

... ÐẠI OP -AMP CĂN BẢN: 7.2.1 Mạch khuếch đại đảo 7.2.2 Mạch khuếch đại không đảo 7.2.3 OP -AMP phân cực nguồn đơn Trong chương này, ta khảo sát op -amp trạng thái lý tưởng Sau đặc tính op -amp lý tưởng: ... op -amp thực tế đạt trạng thái lý tưởng Từ đặc tính ta thấy: - Zi → ∞ nên dòng điện chạy vào op -amp từ ngõ vào - Z0 → 0Ω nên ngõ v0 không bị ảnh hưởng mắc tải - Vì A lớn nên phải dùng op -amp ... chung BJT 7.2.3 Op -amp phân cực nguồn đơn: Phần đặc tính mạch khuếch đại khảo sát op -amp phân cực nguồn đối xứng Thực tế, để tiện thiết kế mạch sử dụng, không cần thiết op -amp phân cực nguồn...

Ngày tải lên: 28/10/2013, 12:15

Ngày tải lên: 09/12/2013, 16:15

... Systems 386 Importance of Loop Gain – Example 390 Steady-State Error – Integral Control 392 PID Controller 394 Contents xv Stability 396 Disturbance Rejection – Example Using D.C Machine 397 Further ... 258 Properties of Induction Motors Power balance Torque 261 262 262 Performance Prediction – Example Line current Output power Efficiency Phasor diagram 263 264 264 265 266 Approximate Equivalent ... Open-loop position control Generation of step pulses and motor response High-speed running and ramping 305 306 Principle of Motor Operation Variable reluctance motor Hybrid motor Summary 311 312...

Ngày tải lên: 12/12/2013, 22:02

... BÀI 04 : OP -AMP VÀ IC SỐ Cấu tạo nguyên lý hoạt động op -amp IC số Phân loại IC op -amp IC số Một số mạch ứng dụng Cách tra cứu sơ đồ chân Logo Thao tác hàn linh kiện Op -amp IC số Khoa Sơ...

Ngày tải lên: 13/12/2013, 02:15

Ngày tải lên: 20/12/2013, 22:16

Ngày tải lên: 20/12/2013, 23:15

... suất lượng (xây dựng TCVN) 45 Bóng đèn huỳnh quang compac − Hiệu suất lượng Compact fluorescent lamps − Energy efficiency 46 Balát điện tử − Hiệu suất lượng Ballasts − Energy efficiency 47 Bình...

Ngày tải lên: 20/12/2013, 23:15