This is chemical engineering class 1 lol. Unless your going to build a block of flats the cost of design is going to outweigh the savings. I make it O(£50) p.a. just not worth it (assuming 50l per day heated 20C)
This is chemical engineering class 1 lol. Unless your going to build a block of flats the cost of design is going to outweigh the savings. I make it O(£50) p.a. just not worth it (assuming 50l per day heated 20C)