performance—regenerative vapor power cycle
Hydrodynamic and performance of low power turbines: conception, modelling and experimental tests
... M/FP = v/ω The validation of this relation is clear, because the power given by the fluid to the piston must be equal to the power transmitted by the handle to the shaft (P = M ω) The elimination ... alternative pumps (pistons, diaphragm, membrane) 2.4 Pumps as turbines When a pump induces a certain power to the flow, it is necessary that a quantity promotes the fluid pumping which in many cases ... (adapted from [10]) When the friction and the inertia of the moving parts are neglected, the binary power generated in the handle by the axial force FP given to the piston and directed in the positive...
Ngày tải lên: 05/09/2013, 15:28
Báo cáo hóa học: " Physical and Electrical Performance of Vapor–Solid Grown ZnO Straight Nanowires" doc
... occurs via a vapor solid (VS) mechanism [17] The vapor H2O was carried into the quartz tube and transported downstream by the flow of argon At the center of the tube furnace, metal zinc vaporized ... At the center of the tube furnace, metal zinc vaporized and reacted with vapor H2O to generate ZnO vapor Then the ZnO vapor deposited on the substrates and nucleation of wurtzite structure ZnO ... nanowires are straight and most of them show smooth surface and no ramification over their length The vapor liquid–solid (VLS) mechanism is common for the catalyzed growth of one-dimensional materials,...
Ngày tải lên: 22/06/2014, 01:20
Thermodynamic analysis for a regenerative gas turbine cycle in coking process
... closedcycle gas turbine, Proc IMechE, Part A: J Power Energy 205(1991) 287-291 [19] T H Frost, B Agnew, A Anderson, Optimization for Brayton-Joule gas turbine cycles, Proc IMechE, Part A: J Power ... Architecture and Power Now, he is the Direct, Institute of Thermal Science Power Engineering, the Director, Military Key Laboratory for Naval Ship Power Engineering, and President of the College of Power ... [16] H Sato, Cycle Theory of Gas Turbine, Sankaido, Tokyo, 1972 [17] W A Woods, P J Bevan, D I Bevan, Output and efficiency of the closed -cycle gas turbine, Proc IMechE, Part A: J Power Energy...
Ngày tải lên: 09/09/2015, 10:32
Chapter 09 GAS POWER CYCLES
... SUMMARY A cycle during which a net amount of work is produced is called a power cycle, and a power cycle during which the working fluid remains a gas throughout is called a gas power cycle The ... cycles © Reprinted with special permission of King Features Syndicate ■ BASIC CONSIDERATIONS IN THE ANALYSIS OF POWER CYCLES Most power- producing devices operate on cycles, and the study of power ... approximate the actual cycle more closely Note that both the Otto and the Diesel cycles can be obtained as special cases of the dual cycle EXAMPLE 9–3 The Ideal Diesel Cycle An ideal Diesel cycle with air...
Ngày tải lên: 12/09/2015, 08:44
Exergoeconomic performance optimization of an endoreversible intercooled regenerative Brayton combined heat and power plant coupled to variable-temperature heat reservoirs
... gas-turbine cycle Proc IMechE, Part A: J Power Energy, 2006, 220(A6): 551-558 [49] Chen L, Wang J, Sun F Power density optimisation of an endoreversible closed intercooled regenerated Brayton cycle ... for the performance optimization of intercooled regenerated Brayton cycles as Refs [47-49] by taking power, efficiency and power density as the objectives Assuming that the total heat exchanger ... performances of an irreversible Carnot cycle CHP plant In industry, Brayton cycle is widely used some authors are interested in the CHP plants composed of various Brayton cycles Yilmaz [24] optimized the...
Ngày tải lên: 05/09/2013, 14:59
Finite time exergoeconomic performance optimization for an irreversible universal steady flow variable-temperature heat reservoir heat pump cycle model
... heat pump cycles; uL = for Dual heat pump cycle; uH = for Miller heat pump cycle, respectively To illustrate the preceding analyses, one can take the irreversible Brayton heat pump cycle with ... Brayton heat pump cycle has the maximum Π opt , u among the six heat pump cycles, and Otto heat pump cycle has the minimum Figure Π opt , u vs β characteristics for six heat pump cycles Figures ... reduced to various special heat pump cycles (3) The different values of φ If φ = , the cycle model is reduced to the endoreversible universal heat pump cycle model with variable-temperature...
Ngày tải lên: 05/09/2013, 15:28
Experimental study of operation performance of a low power thermoelectric cooling dehumidifier
... different input powers of the thermoelectric module It can be seen the dehumidifying period depends strongly on the input power of the thermoelectric module In this experiment, when the input power was ... the TED, the COP is defined as COP = Qc PTE + PF (1) where PTE is the power of the thermoelectric module (W), and PF is the power of the cooling fan(W) The total heat-transfer rate (Qc) of the ... through the module [4] When the input power is too low, the Peltier effect is weak, resulting in a low dehumidifying rate On the contrary, when the input power is too high, the Joule effect is...
Ngày tải lên: 05/09/2013, 16:10
Exergy analysis for combined regenerative Brayton and inverse Brayton cycles
... compressor The top cycle is used as a gas generator to power the bottom cycles The purpose of the turbine in the top cycle is solely to power the compressor The power output of the combined cycle is totally ... regenerative Brayton cycle as top cycle can obtain higher thermal efficiency than the base cycle but smaller work output using the first law analysis method Analysis of energy and power systems based ... Brayton cycle, which could obtain better exergy performance Cycle model [10] The proposed system in Ref [10] is shown in Figure It is constructed from a top cycle (regenerative Brayton cycle) ...
Ngày tải lên: 05/09/2013, 16:10
Exergoeconomic performance optimization for a steadyflow endoreversible refrigeration model including six typical cycles
... various endoreversible cycles, including Brayton cycle by setting Cin = Cout = CP or Otto cycle by setting Cin = Cout = Cv For the endoreversible Brayton or Otto refrigeration cycle, when U H = U ... Carnot, Diesel, Otto, Atkinson, Dual and Brayton refrigeration cycles Cycle model An endoreversible steady flow referigeration cycle operating between an infinite heat sink at temperature TH ... refrigeration cycles Moreover, performance analysis and optimization of the model are carried out in order to investigate the effect of cycle process on the performance of the cycles using numerical...
Ngày tải lên: 05/09/2013, 17:08
A reliability data base for performance and predictive assessment of electric power systems
... discussion in the CEA Power System Reliability Subsection ELECTRIC POWER SYSTEM RELIABILITY ASSESSMENT (EPSRA) The basic structure of EPSRA is shown in Figure Electric Power System Reliability ... Probability Methods, Power System Engineering Committee, "Bibliography On The Application of Probability Methods in Power System Reliability Evaluation 1971-1977", IEEE Transactions on Power Apparatus ... Significant Power Interruptions This is a relatively simple reporting procedure in which each participating utility provides annual data on the frequency and severity of significant power interruptions...
Ngày tải lên: 03/01/2014, 19:36
High-performance, Low-power Atmel® AVR® 8-bit Microcontroller.
... Time from Power- down and Power- save Additional Delay from Reset (VCC = 5.0V) 00 18 CK – 01 18 CK 4.1 ms Fast rising power 10 18 CK 65 ms Slowly rising power 11 CK(1) 4.1 ms Fast rising power or ... Start-up Time from Power- down and Power- save Additional Delay from Reset (VCC = 5.0V) 00 1K CK(1) 4.1 ms Fast rising power or BOD enabled 01 1K CK (1) 65 ms Slowly rising power 10 32K CK 65 ms ... CKSEL0 SUT1 Start-up Time from Power- down and Power- save 00 258 CK(1) 4.1 ms Ceramic resonator, fast rising power 01 258 CK(1) 65 ms Ceramic resonator, slowly rising power 10 1K CK(2) – Ceramic...
Ngày tải lên: 15/04/2014, 14:32
duncan, b. (1996). high performance audio power amplifiers
... power (PWM PSU) 243 6.3.1 6.3.2 6.3.3 6.3.4 HF power supplies (SMPS, HF switchers) Resonant power The higher adaptive PSUs HF switching summary 6.4 Power ... amplifiers 38 2.4 Behaviour of power amps as voltage sources 40 2.4.1 2.4.2 2.4.3 2.4.4 2.4.5 Drive-unit power ratings after EIA/AES Output power capability requirements ... transistors, silicon B Lateral power MOSFETs C Power D–MOSFETs D Thermionic valves (electron tubes) Index x 416 420 421 422 Power amplifier terminology ...
Ngày tải lên: 18/04/2014, 12:27
How to Understand Business Finance Understand the Business Cycle Manage Your Assets Measure Business Performance Sunday Times Creating Success_1 potx
... 9 The business cycle Setting up a company Businesses differ to such a huge degree that each one is truly unique, ... and yet they all go through one simple process in much the same way We will call it the business cycle They produce and deliver a product or service, they invoice the customer, they pay their bills, ... other side we have bank loans – again, once we have a track record and provided we 11 The Business Cycle meet the rules laid down by the banks we may be able to borrow from them Lastly, down the...
Ngày tải lên: 21/06/2014, 07:20
How to Understand Business Finance Understand the Business Cycle Manage Your Assets Measure Business Performance Sunday Times Creating Success_2 docx
... bills We’re now ready to move on to the next business cycle of February Month business cycle The first thing that happens in our February business cycle is that we update the money owed to us by customers ... in the business cycle when it is time to pay our bills The first one is rent of £4,000 But we only have £1,000 in cash We’re profitable but have run out of cash 39 The Business Cycle Figure 2.15 ... price column In our case there was only one order and Figure 2.11 Paying the bills 31 The Business Cycle Table 2.7 January profit and loss account (P&L) £000s Sales £000s 30 Variable costs (costs...
Ngày tải lên: 21/06/2014, 07:20
How to Understand Business Finance Understand the Business Cycle Manage Your Assets Measure Business Performance Sunday Times Creating Success_3 potx
... our money on Without the accountants we really are trying to run our business blind They have the power because they have the information So, get to know your accountants – they will share the information...
Ngày tải lên: 21/06/2014, 07:20
How to Understand Business Finance Understand the Business Cycle Manage Your Assets Measure Business Performance Sunday Times Creating Success_7 doc
... is well worth getting to grips with what they mean by these words, as the resultant tool is very powerful Variable costs Accountants define a variable cost as one that behaves as shown in Figure...
Ngày tải lên: 21/06/2014, 07:20
How to Understand Business Finance Understand the Business Cycle Manage Your Assets Measure Business Performance Sunday Times Creating Success_8 ppt
... (UK) Leverage (US) A measure of the extent to which borrowed funds have been used to increase the power of the shareholders’ equity to earn profits High leverage is desirable in low-risk businesses...
Ngày tải lên: 21/06/2014, 07:20
