1. High Thermal Efficiencies There is a range of cycle efficiencies associated with the CCPP from 47% to 58%. Steam turbine power plants with a comparable megawatt (MW) output have thermal efficiencies of 32% to 41.
2. Short Starting Time Combined cycle generation system can obtain full load within one hour during a hot start and within approximately three hours for a cold start.
3. Excellent Part-Load Operating Performance Combined cycle generation system can obtain full load within one hour during a hot start and within approximately three hours for a cold start.
4. Short Construction Time The short construction time and low construction cost of CCPPs are important items that contribute to economical power generation. Standardized designs and standard factory modules help to reduce engineering time and cost. Additionally, the factory packages all of the major components and containerizes small parts for shipment to the job-site. Most suppliers of these systems barcode all packages for easy inventory control at the construction site.
5. Capital Cost
Lower capital costs. On average the capital costs of a CCPP is about 30% to 50% of a comparable STPP at the same nominal MW output. And the capital cost of combined plant with supplementary firing is slightly higher than a simple gas turbine plant.
6. Intial and Running Cost Consideration The economic advantage of a combined plant compared with steam or gas turbine power plant can be in the first cost as well as in running cost. Whatever may be the fuel used to run the gas turbine plant, important saving can be only achieved if combined cycle plant is installed instead of single cycle gas turbine plant. The power generation cost is determined by initial investment, fuel (running) cost and the cost of maintenance and operation.
7. Lower Cooling Requirements Every power plant rejects waste heat to the environment. The CCPP has a relatively high thermal efficiency and therefore, from the primary energy input to the plant, a greater amount of electricity is generated which in turn, reduces the amount of waste heat given up to the environment.
8. Reliability and Availability of Combined Cycle Power Plant Single shaft plants have slightly higher reliability and availability than the multi shaft plants. The reason for the single shafts better statistics is due to simplicity of control and operation and proper maintenance practices. Plant reliability defined as follows: Reliability (%) = (1-Forced Outage Hours/Unit Period Hours) ×100
9. High Ratio of Power Output to Occupied Ground Space One may include that a CCPP is today the most economical solution as it is from an ecological point of view. This, since it provides also various possibilities to reduce the harmful emissions and at the same time an increase in plant capacity and efficiency. We are sure that CCPP will be the pioneer of all plants in the next decade.
2. Short Starting Time Combined cycle generation system can obtain full load within one hour during a hot start and within approximately three hours for a cold start.
3. Excellent Part-Load Operating Performance Combined cycle generation system can obtain full load within one hour during a hot start and within approximately three hours for a cold start.
4. Short Construction Time The short construction time and low construction cost of CCPPs are important items that contribute to economical power generation. Standardized designs and standard factory modules help to reduce engineering time and cost. Additionally, the factory packages all of the major components and containerizes small parts for shipment to the job-site. Most suppliers of these systems barcode all packages for easy inventory control at the construction site.
5. Capital Cost
Lower capital costs. On average the capital costs of a CCPP is about 30% to 50% of a comparable STPP at the same nominal MW output. And the capital cost of combined plant with supplementary firing is slightly higher than a simple gas turbine plant.
6. Intial and Running Cost Consideration The economic advantage of a combined plant compared with steam or gas turbine power plant can be in the first cost as well as in running cost. Whatever may be the fuel used to run the gas turbine plant, important saving can be only achieved if combined cycle plant is installed instead of single cycle gas turbine plant. The power generation cost is determined by initial investment, fuel (running) cost and the cost of maintenance and operation.
7. Lower Cooling Requirements Every power plant rejects waste heat to the environment. The CCPP has a relatively high thermal efficiency and therefore, from the primary energy input to the plant, a greater amount of electricity is generated which in turn, reduces the amount of waste heat given up to the environment.
8. Reliability and Availability of Combined Cycle Power Plant Single shaft plants have slightly higher reliability and availability than the multi shaft plants. The reason for the single shafts better statistics is due to simplicity of control and operation and proper maintenance practices. Plant reliability defined as follows: Reliability (%) = (1-Forced Outage Hours/Unit Period Hours) ×100
9. High Ratio of Power Output to Occupied Ground Space One may include that a CCPP is today the most economical solution as it is from an ecological point of view. This, since it provides also various possibilities to reduce the harmful emissions and at the same time an increase in plant capacity and efficiency. We are sure that CCPP will be the pioneer of all plants in the next decade.
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