ᐅ Accurate Calculation by the Energy Consultant? Why Choose Solar for Heating?
Created on: 15 Jan 2016 19:26
K
Kerstin2
Hello everyone,
We have received our documents for the KfW loan and want to build a KfW-70 house.
Plan bricks T-18 (24 cm (9.5 inches) Poroton blocks) with 16 cm (6.3 inches) insulation. The foundation slab is insulated with 10 cm (3.9 inches) Styrodur insulation.
10% of the value is now supposed to come from solar support for heating! We didn’t want that at all. Solar should only be used for hot water, not for heating. We end up with a value just over 40, while the maximum allowed for the KfW-70 house is 69.xx. I don’t understand why we have to include solar for heating support when it only covers 10% of the heat demand.
What can we do?
We have received our documents for the KfW loan and want to build a KfW-70 house.
Plan bricks T-18 (24 cm (9.5 inches) Poroton blocks) with 16 cm (6.3 inches) insulation. The foundation slab is insulated with 10 cm (3.9 inches) Styrodur insulation.
10% of the value is now supposed to come from solar support for heating! We didn’t want that at all. Solar should only be used for hot water, not for heating. We end up with a value just over 40, while the maximum allowed for the KfW-70 house is 69.xx. I don’t understand why we have to include solar for heating support when it only covers 10% of the heat demand.
What can we do?
Peanuts74 schrieb:
It sounds like you shower or bathe at 74 degrees... That would be too hot for me ;-)😕. No - I don’t do that. I wanted to survive.
The solar thermal system only produces water at 74°C (165°F) in summer.
I shower at 35-37°C (95-99°F) and bathe at 39°C (102°F). 😉