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  • 17/06/2023 at 16:57 #2758
    Author Michael
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         You are invited in this topic to comment and make suggestions of how we should build the Knowledge Centre. Please watch the topic video on this page. Your views are highly appreciated.

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      18/06/2023 at 16:56 #2764
      Rezö 007
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        I think we should have a Knowledge Center item on Heating Values of Fuels and also on specific heat value of combustion gases.

        26/08/2023 at 15:36 #2970
        Author Michael
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          Good Idea Rezö 007. We will put this in a.s.a.p.

          08/12/2023 at 10:54 #4844
          Author Michael
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              We have finished the specific heat topic. The heating value topic will follow asap.

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          Topics in the section “Boilers”

          Water & Steam Properties

          Green are items, still to be created

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          Topics in the section “Flue Gas Emissions”

          Pollution Considerations

          Particulate Emission

          Sulfur, Chlorine and Fluor

          Hydrocarbon and CO

          Nitrogen Oxides

          Dioxines and others

          Green are items, still to be created

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          Topics in the section “Efficiency”

          Importance of Efficiency

          Internal Combustion Engine

          Wind and Solar Efficiency

          Steam and Cogeneration

          Gas Turbine and combined Cycle

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          Topics in the section “Combustion”

          Combustion Calculation

          Coal Firing

          Biomass / Agrowaste Firing

          Solid waste Incineration

          Liquid Waste and Sludge Incineration

          Green are items, still to be created

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          Topics in the Section “Organic Fuels”

          Formation of Coal, Oil and Gas

          Properties of organic fuel

          The heating value of fuel

          Ash Behaviour of Fuel

          Green are items, still to be created

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          Topics in the section “Basic Knowledge”

          Units and conversions

          Specific Heat of Gas

          Specific Heat of Solids and Liquids

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          Topics in the section “Knowledge Center”

          About the Knowledge Center

          Using the aleraSoft Excel AddIn

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          WHY

          Why do we need the www.alera.academy?

          The global energy transition towards an electricity dominated energy world created by renewable energy, mainly wind and solar, is well underway. In some countries, wind and solar are already contributing a notable portion of the electricity production. By this transition, the interest in thermal energy is declining and material and intellectual resources are increasingly diverted from thermal energy technology to electricity from renewables. Some university institutes for thermal engineering are faced with strongly reduced numbers of students or they even close thermal energy departments

          However, if one looks at the total global primary energy usage, the picture looks less promising.

          Evaluating the last 17 years, the period after the Kyoto protocol signed by 192 nations went into force in 2005. we see that the actual contribution of wind and solar energy to cover the global primary energy consumption is neglectable.

          In this period the global primary consumption of energy increased by 26,3 % and the largest amount of this increase  with 70 % was provided by coal, oil and gas. Wind and solar contributed only 20 % of the increase and hydropower 8 %. 

          In 2021 wind and solar energy only provided 4,3 % of total global primary energy.

          The contribution of the different energy sources to the global primary energy is shown below.

          (source https://ourworldindata.org/energy-mix). 

          The fact that wind and solar energy have a high convertion factor to  electricity is already accounted for in the above numbers chart. Nuclear is shown with its thermal input, not electricity produced and hydro is adjusted for efficiency as present in a thermal power plant.

          The idea that additional energy consumption growth or the globally required energy  will in the short to medium future, say 50 to 100 years, be in its majority provided by wind and solar and the rest by other renewables such as hydro or nuclear with a suitable grid and energy storage system is nothing but an illusion.

          This is why we are conviced that we must upkeep and further develop thermal energy knowledge, and so utilise the enormous potential energy saving  through efficiency increase and better thermal energy processes.