ᐅ Solar thermal system and pellet heating, heating support/hot water
Created on: 26 Jul 2018 06:53
A
Ade123
Hello,
We are currently planning a new build with a living area of about 150 m² (1,615 sq ft), solid brick construction using 35 cm (14 inches) bricks, triple-glazed windows, no basement, underfloor heating on the ground and upper floors, a hip roof house, and an extension with a hip roof pitched at 20° (20 degrees) directly facing south. The heating system is an ETA PU7 with approximately 850 liters (225 gallons) buffer storage, and there is a controlled mechanical ventilation system with heat recovery. Currently, the household consists of two people.
The extension essentially serves as our garage and boiler room, with an access passage to the living area.
Originally, a solar thermal system with heating support and domestic hot water was planned. After reading some discussions here, I was quite shocked to learn that it is basically considered a waste of money, and if anything, only domestic hot water generation would be worthwhile.
My interest is partly for two reasons: 1. to save money eventually, and 2. to reduce wear on the heating system so it does not have to operate as often during the summer.
The heating installer suggested two solar thermal system options: 1. Buderus Logaplus package with 4.7 m² (50.6 sq ft) collector area or 2. Buderus Logaplus with 9.5 m² (102.3 sq ft).
I am aware that the roof pitch is not ideal, so if it would be worthwhile at all, I would consider mounting the collectors on a frame.
We are currently planning a new build with a living area of about 150 m² (1,615 sq ft), solid brick construction using 35 cm (14 inches) bricks, triple-glazed windows, no basement, underfloor heating on the ground and upper floors, a hip roof house, and an extension with a hip roof pitched at 20° (20 degrees) directly facing south. The heating system is an ETA PU7 with approximately 850 liters (225 gallons) buffer storage, and there is a controlled mechanical ventilation system with heat recovery. Currently, the household consists of two people.
The extension essentially serves as our garage and boiler room, with an access passage to the living area.
Originally, a solar thermal system with heating support and domestic hot water was planned. After reading some discussions here, I was quite shocked to learn that it is basically considered a waste of money, and if anything, only domestic hot water generation would be worthwhile.
My interest is partly for two reasons: 1. to save money eventually, and 2. to reduce wear on the heating system so it does not have to operate as often during the summer.
The heating installer suggested two solar thermal system options: 1. Buderus Logaplus package with 4.7 m² (50.6 sq ft) collector area or 2. Buderus Logaplus with 9.5 m² (102.3 sq ft).
I am aware that the roof pitch is not ideal, so if it would be worthwhile at all, I would consider mounting the collectors on a frame.
Thanks for the other suggestion, but unfortunately I doubt that I can retrofit a heating element with this buffer tank.
I would also prefer to stick to the topic of solar thermal (ST); in the other threads, the discussion quickly faded, and out of five pages, only one was informative.
At the moment, I am really leaning towards the Wolf with 9.6m2 (103 square feet) for 3000 euros, but I still need to get an offer for mounting it at a 50-degree (50°) inclination.
I would also prefer to stick to the topic of solar thermal (ST); in the other threads, the discussion quickly faded, and out of five pages, only one was informative.
At the moment, I am really leaning towards the Wolf with 9.6m2 (103 square feet) for 3000 euros, but I still need to get an offer for mounting it at a 50-degree (50°) inclination.
schubert7927 Jul 2018 18:48The ST never really pays off....
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