Hi guys, this is my first post so be gentle on me.
Planning to install a Vigas 40 with 500 or 1000 gallon storage this spring in a 12 x 20 outbuilding 100' from the house. Trying to narrow down the proper size storage I would need to get an 12 hour loading schedule during an average day. I got a heat loss calc from off the plans for my house (1973) 2,300SQF. Came up with a BTU/H of 60,000 which includes my DHW. My main question is when the BTU/H at 60,000 is at worst case scenario? Would you design the storage for worst case scenario or an average heating day say 30,000 BTU/H? If my math is right a vigas 40 is a 135,000 BTU x .80 efficiency x 4.3 hour burn time = 464,400 usable BTU's. Baseboard heat so Delta T 190 -140 = 50?. 500 gallons x 8.33 x 50 = 208,250 so 1000 gallons = 416,500.
Also if using 500 gallons with boiler this size produces double the btu's, is this a huge concern?
Planning to install a Vigas 40 with 500 or 1000 gallon storage this spring in a 12 x 20 outbuilding 100' from the house. Trying to narrow down the proper size storage I would need to get an 12 hour loading schedule during an average day. I got a heat loss calc from off the plans for my house (1973) 2,300SQF. Came up with a BTU/H of 60,000 which includes my DHW. My main question is when the BTU/H at 60,000 is at worst case scenario? Would you design the storage for worst case scenario or an average heating day say 30,000 BTU/H? If my math is right a vigas 40 is a 135,000 BTU x .80 efficiency x 4.3 hour burn time = 464,400 usable BTU's. Baseboard heat so Delta T 190 -140 = 50?. 500 gallons x 8.33 x 50 = 208,250 so 1000 gallons = 416,500.
Also if using 500 gallons with boiler this size produces double the btu's, is this a huge concern?