Do you know any specific way to determine its coefficient?
No. I took a course in heat transfer, but didn't do very well; It is very complicated mathematically, since it is fluid dynamics mixed with thermodynamics. What I took away from it is that experimentation is better than trying to figure it out with math.Do you know any specific way to determine its coefficient?
The enthalpy of vaporization is slightly higher, but remember, you also had to heat the water to raise the temperature. The total energy is - I think - exactly the same. What's missing from that picture is the effective generation of the heat: the compost has a certain optimum operating temperature I'm sure, and if it overheats it probably dies (I'm assuming it is a biological process, not a chemical process...).While the method of taking the energy produced in an hour and dividing I by the latent heat of vaporization makes sense in some ways it also seems odd because it also means that if the boiling point and pressure were raised that the boiling rate would increase despite the fact that the temperature needs to boil the water are only met instead of exceeded by 30°C. I don't know if I explained that well but that's what I'm hung up on.
Depending on what you are doing with the steam, you may or may not need the vacuum continuously maintained:I know I would need an energy source to produce the initial vacum and just curiosity I suppose, I'd like to know