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thermal plant and CCGT efficiency

  • 30-10-2007 4:03pm
    #1
    holdfast
    Registered Users, Registered Users 2 Posts: 1,152 ✭✭✭


    Hello

    Looking for a bit of help here. I have a project which require me 2. Describe in detail one thermal/steam plant and calculate its efficiency, specific steam consumption and CO2 emissions. Compare this with a state-of-the-art combined cycle gas turbine system of similar size, again illustrating your answer with detailed calculations regarding efficiency and CO2 emissions?. I have the other parts of the project completed. But I am finding it hard to find such calculations. I have looked at the whitegate thermal plant and the proposed CCGT. Anyone have an idea

    regards

    mike


Comments

  • #2
    chris85
    Registered Users, Registered Users 2 Posts: 4,502 ✭✭✭chris85


    holdfast wrote: »
    Hello

    Looking for a bit of help here. I have a project which require me 2. Describe in detail one thermal/steam plant and calculate its efficiency, specific steam consumption and CO2 emissions. Compare this with a state-of-the-art combined cycle gas turbine system of similar size, again illustrating your answer with detailed calculations regarding efficiency and CO2 emissions?. I have the other parts of the project completed. But I am finding it hard to find such calculations. I have looked at the whitegate thermal plant and the proposed CCGT. Anyone have an idea

    regards

    mike

    I am actually doing some stuff on Gas Turbines at the moment. For calculations go for one of the books which is aimed at students (It think you are student as its a project with a good few pars, correct me if Im wrong :rolleyes:)

    Try "Fundamentals of Thermodynamics" which is published by Wiley which are good at the engineering books.

    http://he-cda.wiley.com/WileyCDA/HigherEdTitle.rdr?productCd=0471152323


  • #3
    Nukem
    Registered Users, Registered Users 2 Posts: 4,082 ✭✭✭Nukem


    A book i used to use in college is Applied Thermodynamics for Engineering Technologists. It gives some great worked examples with detailed calcs.

    http://www.play.com/Books/Books/4-/201320/Applied-Thermodynamics-for-Engineering-Technologists/Product.html


  • #4
    Teg Veece
    Registered Users, Registered Users 2 Posts: 550 ✭✭✭Teg Veece


    You can work out the Carnot efficiency easily enough. This is the absolute maximum possible efficiency of your plant but in practice it would be a lot less.

    Its awhile since I've done this but I think all you need is the temperature of the boiler (T1) and the temperature of the condenser (T2).

    The Carnot efficiency = [1 - (T2/T1)] * 100%

    Just make sure you change your temperatures into Kelvin before filling them in.

    So a steam power plant with a boiler temp of 600 degrees Celcius (873 K) and a condenser at 25 degrees Celcius (298 K) will have a maximum possible efficiency of about 66% but in reality it would be about half of this because of other losses.


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