How to calculate overall thermal efficiency of combined cycle power plants – a sample CCGT presented

How to calculate overall thermal efficiency of combined cycle power plants – a sample CCGT presented

Calculating or predicting the overall performance of a combined cycle power plant, specifically a combined cycle gas turbine (CCGT) power plant is sometimes difficult for most design engineers. Your favorite energy technology expert again comes to the rescue – Engineer Marcial T. Ocampo – has derived the following equation to guide the design engineer and project finance modeler or business development engineer in predicting the overall thermal efficiency of the combined cycle. More »

Large-Scale Project Finance Models

Large-Scale Project Finance Models:

  1. Oil Thermal Power Plant – 2,000 US$

  2. Pulverized Thermal Power Plant – 4,000 US$

  3. Advance Coal Thermal Power Plant – 6,000 US$

  4. Geothermal Power Plant – 8,000 US$

  5. Simple Gas Turbine Power Plant – 9,000 US$

  6. Combined Cycle Gas Turbine Power Plant – 10,000 US$

  7. Energy Storage Power Plant – 12,000 US$*
  8. Solar Thermal Power Plant – 14,000 US$*
  9. Fuel Cells Power Plant – 16,000 US$*
  10. Ocean Thermal Power Plant – 18,000 US$*
  11. Ocean Wave Power Plant – 20,000 US$*
  12. Tidal Power Plant – 22,000 US$*
  13. Nuclear Power Plant – 30,000 US$*

*Please inquire about payment options directly to me.


Contents:

1) Input (Assumption) Sheet

2) Report (Summary) Sheet

3) Project Cost Sheet (equipment cost, ocean freight, insurance, taxes & duties, brokerage & local shipping, erection & installation, land & right-of-way, project development & contract management, initial stocks & inventories, manpower mobilization & training, working capital, interest during construction, other capitalized expenses)

4) Construction Sheet (construction schedule, equity/loan drawdown, interest during construction)

5) Model Sheet (escalation of items, starting costs, capacity & degradation, heat rate & efficiency degradation, maintenance & overhaul scheduel, available hours, gross generation, plant use & net generation, transmission/distribution line constraints & losses, net electricity sales, revenue items, expense items, income statement, balance sheet, cash flow statement, project & equity IRR, project & equity payback, debt service cover ratio)

6) Depreciation Sheet (evolution of balance sheet accounts, working capital)

7) Loan Amortization Table (interest & principal repayment)

Simple Gas Turbine (GT)

The file (525 KB) will cover the following topics:

Gas Turbines and Combined Cycle Power Plants

  • 130 BC – Hero of Alexandria’s reaction steam turbine
  • 1550 – Leonardo da Vinci’s “smoke mill”
  • 1629 – Giovanni Branca’s impulse steam turbine
  • 1791 – John Barber’s patent for steam turbine – “gas was produced from heated coal, mixed with air, compressed and then burnt to produce a high speed jet that impinged on radial blades on a turbine wheel rim”.

Topics – Simple Gas Turbines

  • Gas Turbines, Its Uses and History
  • Aero-Derivative Gas Turbine Developments
  • Operating Principle of a Gas Turbine
  • Ideal & Non-Ideal Brayton Cycle, Its Efficiency
  • Effects of Varying Compression Ratio
  • Modifications to Improve Efficiency
  • Gas Turbine Fuels
  • Gas Turbine Technologies
  • Advantages, Disadvantages of GT
  • Environmental Impact, Risks of GT

Price: 44 USD


Combined Cycle Gas Turbine

The file (4.26 MB) will cover the following topics:

Combined Cycle GT (CCGT)

GTs have at best efficiencies from 35% to 42%. Almost 60% of the fuel energy is wasted in the turbine exhaust of a GT. Capturing this waste heat in a heat recovery steam generator (HRSG) is the basis of the combined cycle (Brayton + Rankine). The HRSG produces steam that drives a turbo-generator to produce additional power.

Topics – Combined Cycle GT

  • Operating Principle of a Combined Cycle GT
  • Combined Brayton + Rankine Cycles
  • Comparison of Various CCGT Configurations
  • CCGT (Gas vs Liquid Firing)
  • CCGT Energy Balance
  • Examples of Gas Turbine Technologies
  • Cost of GT Technologies
  • GT and CCGT Plants in the Philippines
  • Advantages, Disadvantages of CCGT
  • Environmental Impact, Risks of CCGT

Price: 80 USD