ᐅ Extremely High Pellet Consumption (200 kg in 3 Days) in a KfW 70 Multi-Family House!
Created on: 9 Nov 2016 14:35
R
rudiherbertR
rudiherbert9 Nov 2016 14:35Hello,
I just noticed the following regarding our pellet heating system (6-family new build, KfW70 standard). This is a new build and the first winter...
The consumption in October (which was very mild here) was 1000 kg.
Currently, the consumption is 200 kg over 3 days!
Projected, that would be 2,000 kg per month!
Although temperatures have dropped somewhat, there is still no sign of a harsh winter.
Here is what I observed about the pellet heating system (Eta 20-30).
The underfloor heating temperature is 56°C (133°F) with an outside temperature of 1°C (34°F).
Supply temperature to the underfloor heating in the boiler room is only 30°C (86°F)? The return temperature is the same?
The supply temperature shown inside the apartment is 38°C (100°F) when the room thermostat is active, and 20°C (68°F) when inactive.
The buffer tank is supported by solar thermal collectors on the roof (for domestic hot water and heating).
I am certain that this consumption cannot be correct!
The new build is well insulated. The building is dry. Everyone heats reasonably and ventilates correctly.
2,000 kg of pellets per month in winter is extremely high!
In October, we used 1,000 kg.
In summer, about 500 kg per month.
Before contacting the heating technician or property management, I wanted to get some advice here.
Thank you.
I just noticed the following regarding our pellet heating system (6-family new build, KfW70 standard). This is a new build and the first winter...
The consumption in October (which was very mild here) was 1000 kg.
Currently, the consumption is 200 kg over 3 days!
Projected, that would be 2,000 kg per month!
Although temperatures have dropped somewhat, there is still no sign of a harsh winter.
Here is what I observed about the pellet heating system (Eta 20-30).
The underfloor heating temperature is 56°C (133°F) with an outside temperature of 1°C (34°F).
Supply temperature to the underfloor heating in the boiler room is only 30°C (86°F)? The return temperature is the same?
The supply temperature shown inside the apartment is 38°C (100°F) when the room thermostat is active, and 20°C (68°F) when inactive.
The buffer tank is supported by solar thermal collectors on the roof (for domestic hot water and heating).
I am certain that this consumption cannot be correct!
The new build is well insulated. The building is dry. Everyone heats reasonably and ventilates correctly.
2,000 kg of pellets per month in winter is extremely high!
In October, we used 1,000 kg.
In summer, about 500 kg per month.
Before contacting the heating technician or property management, I wanted to get some advice here.
Thank you.
Calorific value of 960 kWh... so about 53 kWh per day per apartment. We have roughly the same in our house – not exactly abnormal; though it is rather high, considering that a house has more external walls ;-)
Take a look at the heating consumption distribution.. if you have 500 kg in summer (for what??? – you have domestic hot water covered by the DHW system) and 1 ton in the shoulder month, then 2 tons for a cold month is perfectly reasonable.
Take a look at the heating consumption distribution.. if you have 500 kg in summer (for what??? – you have domestic hot water covered by the DHW system) and 1 ton in the shoulder month, then 2 tons for a cold month is perfectly reasonable.
rudiherbert schrieb:
The consumption in October (which was very mild in Bavaria) was 1000 kg (2205 lbs).
Now the current consumption is 200 kg (441 lbs) over 3 days!
Projected monthly usage would be 2 tons!
Although we have somewhat colder temperatures now, there is still no sign of a harsh winter!
More likely 20 tons per month...?
Basti2709 schrieb:
More like 20 tons per month...?Do you calculate like that at work as well? 😉
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