曝光臺 注意防騙 網曝天貓店富美金盛家居專營店坑蒙拐騙欺詐消費者

Gas Turbine Cycle in the Combined Cycle or Cogeneration Mode
The utilization of gas turbine exhaustgases， for steam generation or theheating of other heat transfer mediums， or in the use of cooling or heating
Table 1-1
.conomic Comparison of Various Generation Technologies
Technology Diesel Gas Simple Cycle Micro Fuel Solar .nergy Wind .io .iver Comparison .ngine .ngine Gas Turbine Turbine Cell Photovoltic Mass .ydro Cell
Product Available Available Available Available 1996-Available Available 2020 Available Rollout 2010
Size Range 20-50-7000十 500-30-200 50-1000十 1十 10-2500 N. 20. (kW) 25，000十 450，000十 1000.
Efficiency (%) 36-43% 28-42% 21-45% 25-30% 35-54% NA 45-55% 25-35% 60-70%
Gen Set Cost 125-300 250-600 300-600 350-8001，500-NA N. N. N. ($jkW) 3，000
Turnkey Cost 200-500 600-1000 300-650 475-9001，500-5，000-700. 800. 750. No-Heat 3，00010，000 1300 1500 1200 Recovery ($jkW)
Heat Recovery 75-100 75-100 150-300 100-2501，900-NA N. 150-300 NAAdded Cost 3，500 ($jkW)
0 &孔 Cost 0.007-0.015 0.005-0.0120.003-0.008 0.006-0.010 0.005-0.010 0.001-0.004 0.007-0.0120.006-0.011 0.005-0.010 ($jkWh)
. .a. Tur.in. .n.ineerin. .and.oo.
An Overview of .a. Tur.ine.
buildings or parts of cities is not a new concept and is currently being exploited to its full potential.
The Fossil Power Plants of the 1990s and into the early part of the new millennium will be the Combined Cycle PowerPlants， with the gas turbine as being the centerpiece of the plant. It is estimated that between 1997-2006 there will be an addition of 147.7 GW of power. These plantshave replaced the large Steam Turbine Plants， which were the main fossil power plants through the 1980s. The Combined Cycle Power Plant is not new inconcept， since some have been in operation since the mid1950s. These plants came into their own with the new high capacity and efficiency gas turbines.
The new marketplace of energy conversion will have many new and novel concepts in combined cycle power plants. Figure 1-1 shows the heatrates of these plants， presentand future， and Figure 1-2shows the effi-ciencies of the same plants. The plants referenced are the Simple Cycle Gas Turbine (SCGT) with firing temperatures of 2400 0F (1315 0C)， Recuperative Gas Turbine(RGT)， the Steam Turbine Plant(ST)， theCombined Cycle Power Plant (CCPP)， and the Advanced Combined Cycle Power Plants (ACCP) such as combined cycle power plants using Advanced Gas TurbineCycles， and finally the Hybrid Power Plants (HPP).
Table 1-2is an analysis of the competitive standing of the various types ofpowerplants， their capital cost， heatrate， operation and maintenancecosts，availability and reliability， and time for planning. Examining the capital costand installationtime， of these new power plants it is obvious that the gas turbine is the best choice for peaking power. Steam turbine plants are about 50% higher in initial costs $800-$1000jkW thancombined cycle plants， which are about $400-$900jkW. Nuclear power plants are the most expen-sive. The high initial costs and the long-time in construction make such a plant unrealistic for a deregulated utility.
In the areaof performance， the steam turbine power plants have anefficiency of about35%， as comparedto combined cycle powerplants， which have an efficiency of about 55%. Newer Gas Turbine technology will make combined cycle efficiencies range between 60-65%. As a rule of thumb a 1% increase in efficiency could mean that 3.3% more capital can be invested. However one must be careful that the increase in efficiency does not lead to a decrease in availability. From 1996-2000 we have seen a growth in efficiency of about 10% and a loss in availability of about 10%. This trend must be turned around since many analysis show that a 1% drop in the availability needs about 2-3% increase in efficiency to offset that loss.

Simple Cycle GasTurbine  Regenerative GasTurbine  Steam Turbine  Combined Cycle Power Plant  Advanced Gas Turbine Combined Cycle Power Plant  Hybrid Power Plant 
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：燃氣渦輪工程手冊 Gas Turbine Engineering Handbook 1(7)