What I am looking for?
I am trying to find a source which is stating typical heat loss coefficient of a thermal energy storage or a buffer tank.
Most of the resources I've found so far, rather than stating the heat loss rate in the format of W/m^2k, they are stated in the form of normal standing loss values. This is not helpful in my case where I am using heat loss equations to estimate the possible losses.
Aim & objective
Aim The aim of my research is develop an open-source user friendly interface to characterize the output of low emission carbon sources.
Objective To characterize the heat loss rate of the storage unit considering the temperature of the water inside the tank.
Note: Formerly, one of the readers replied to a question of mine, that this platform is meant for non-professional individuals having troubles with their home system. I can say that I am a non-professional when it comes to commercial heating systems and I will not have any commercial gain from my project (through your advice).
Can you direct me to a source which is stating the typical heat loss coefficient (in W/m^2.K) values for thermal energy storage(s) (a.k.a buffer tank) deployed for residential or small commercial sites within the size range of 500 to 5000 liters.