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Vwgolfcabrio2 Sep 2013 23:36Hello,
I am currently planning a house with an outbuilding. The house will be heated by a gas condensing boiler. The garage is located 5 m (16 feet) away from the house. How can I quickly heat it at certain times (2-3 times a week)? Can I use an air heater connected to my gas boiler, or is the boiler not suitable for that? The garage space has a volume of approximately 220 m³ (7,770 cubic feet) and should be heated to around 15–18°C (59–64°F). What solution is cost-effective and also inexpensive to maintain?
Regards, Fabian
I am currently planning a house with an outbuilding. The house will be heated by a gas condensing boiler. The garage is located 5 m (16 feet) away from the house. How can I quickly heat it at certain times (2-3 times a week)? Can I use an air heater connected to my gas boiler, or is the boiler not suitable for that? The garage space has a volume of approximately 220 m³ (7,770 cubic feet) and should be heated to around 15–18°C (59–64°F). What solution is cost-effective and also inexpensive to maintain?
Regards, Fabian
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Vwgolfcabrio3 Sep 2013 10:49Hello,
can nobody help me? I have done further research online. The problem seems to be the flow temperature. What about radiant heaters on the ceiling? Are they effective and do they heat the room quickly?
can nobody help me? I have done further research online. The problem seems to be the flow temperature. What about radiant heaters on the ceiling? Are they effective and do they heat the room quickly?
I believe the main issue is simply a lack of information. Basically, it depends on the capacity reserves of the gas boiler. If it has enough "power," I can definitely imagine it working. As far as I know, gas boilers can modulate well to avoid frequent cycling, but still deliver sufficient output when needed.
Radiator heating systems usually require a relatively high flow temperature. If it’s a low-temperature system, I can envision using radiators combined with fans or blowers—so the radiators heat up and the fans turn on as needed for quicker warming. However, I don’t think this is ever really cost-effective since heating a space of 220m³ (7,770 ft³) consumes a certain amount of energy.
That said, I am not a heating engineer and don’t have detailed knowledge on how to best combine temperature differential settings with a building’s standard heating system.
Radiator heating systems usually require a relatively high flow temperature. If it’s a low-temperature system, I can envision using radiators combined with fans or blowers—so the radiators heat up and the fans turn on as needed for quicker warming. However, I don’t think this is ever really cost-effective since heating a space of 220m³ (7,770 ft³) consumes a certain amount of energy.
That said, I am not a heating engineer and don’t have detailed knowledge on how to best combine temperature differential settings with a building’s standard heating system.
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Bauexperte4 Sep 2013 01:19Hello,
Regards, Bauexperte
Vwgolfcabrio schrieb:I guess not – because the all-in-one solution hasn’t been invented yet
can no one help me?
Regards, Bauexperte
The radiant heat output increases with the FOURTH power of the temperature but only rises linearly with the surface area. So, what is more effective for quickly heating a room?
Also, I don’t think a garage used as a workshop offers a lot of space and free air (no obstacles for the radiation to reach everywhere). When I think of radiant heat output, I imagine a system like, for example, a thick pipe at the ceiling or something similar.
By the way, marble heaters usually have a surface temperature of 85-100°C (185-212°F). For me, that corresponds to a high supply temperature.
After some research, you can also find that a wall heating system with pipes (thinly plastered) operating at 35°C (95°F) supply temperature delivers about 85 W per square meter. You would need quite a large surface area to warm an uninsulated garage in winter. One requirement was to heat up “quickly.” I don’t think 100 m² (1,076 sq ft) or more of surface area is available.
Also, I don’t think a garage used as a workshop offers a lot of space and free air (no obstacles for the radiation to reach everywhere). When I think of radiant heat output, I imagine a system like, for example, a thick pipe at the ceiling or something similar.
By the way, marble heaters usually have a surface temperature of 85-100°C (185-212°F). For me, that corresponds to a high supply temperature.
After some research, you can also find that a wall heating system with pipes (thinly plastered) operating at 35°C (95°F) supply temperature delivers about 85 W per square meter. You would need quite a large surface area to warm an uninsulated garage in winter. One requirement was to heat up “quickly.” I don’t think 100 m² (1,076 sq ft) or more of surface area is available.
Bauexperte schrieb:
Hello,
Incorrect - if they are hydronic (water-based), they require a large surface area – usually an entire wall; if they are electric devices (marble heater), 1 square meter (about 11 square feet) is sufficient with proper building insulation.
Regards, BauexperteIncorrect – please read my post carefully again. Hydronic radiant heaters need a high supply temperature. You are talking about something completely different, namely wall heating.Regards
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