It really depends on the type of waste energy you have. Maybe you wanted to ask "What is the convenient and cheap way to produce electricity from waste?"
It is a different question. The main pathways are:
pyrolysis and use gas turbines to create electricity,
pyrolysis and co-firing in an existing power plant,
co-firing the processed waste in an existing solid based (coal) power plant,
solid waste power plant.
If you wanted to ask about the waste energy (e.g. 1000 l of 80 C water per minute), besides the source, you need to know the temperature and the produced energy (MJ). Theoretically, you can turn any temperature difference to electricity, but below a certain temperature and energy it is not feasible and can be unortodox.
I think it is dependent on the waste energy sources you have. I have been reliably informed that gasification is cheaper in my country in such cases because of its ability to transform energy from diverse sources of waste with varying temperatures and its cheapness with respect to its production processes of energy. You can equally read on the ORC generation method as suggested by Prof. Sircar who is an expert in energy generation. Anyway, congratulations for the project that I believe would bring relief to the masses of local people across the world. Best regards
There are many ways of extracting energy from municipal solidwaste. And many large scale and pilot plants have been commissioned for this purpose all across the globe.
Classical examples are:
- Landfill Gas to Energy - Bandeirantes, Sao Paulo
- Plasma arc gasification (Plasma Arc Waste Destruction System for the USS Gerald R. Ford)
- Incineration
So, the general question of "Model & Equation" is a very vague. The energy content of MSW clearly depends on C,H,O,N of MSW. Kindly select any one method and then come up with a specific question. Because, the concept of energy recovery from MSW is very vast.