ᐅ Designing a heating system

Created on: 11 Nov 2013 08:18
M
mission2010
Hello everyone,

My parents-in-law live and are building a house in Poland, about 80km (50 miles) northeast of Warsaw. In winter, temperatures easily drop to -20°C ( -4°F), and it can get even colder at night.

They want to build it as energy-efficiently as possible. The house will be thoroughly insulated. However, I am uncertain about the heating system.

A pellet stove will be installed. Additionally, a solar thermal system is desired. As a nice extra, I am considering a fireplace that heats domestic hot water through combustion heat (this is optional).

After speaking with the heating installer there, I am quite confused. I thought the solar system could be used both for domestic hot water and for heating. But the installer claims it can only be used for heating the domestic hot water.

What is your opinion? Is there a way to do it as I originally imagined?

Best regards,
mission2010
E
Energy-Building
14 Nov 2013 22:22
Of course, a house can also be heated with solar thermal energy. It depends on the number of collectors, the size of the storage tank, and the overall system design. Surface heating systems, such as underfloor heating at 32°C (90°F) or wall heating at 28°C (82°F), are optimal when properly designed. With a correct hydraulic setup, the system works efficiently. This works very well in Austria and even better in Poland. I recall a car dealership we built in the farthest part of Poland equipped with solar thermal and geothermal energy. It requires hardly any additional heating in winter, and the rooms maintain a constant 22°C (72°F) even when outside temperatures drop to -25°C (-13°F). Regards, Energy-Building