ᐅ Heat pump: What is the appropriate size for the storage tank?
Created on: 24 Jun 2010 09:48
S
svuja2804S
svuja280424 Jun 2010 09:48Hello,
we are currently building a single-family house with 180 m² (1,938 sq ft) of living space in Bavaria.
We are having an air-to-water heat pump installed and, in addition, a hydronic stove to produce extra hot water.
Our construction company said that an 800-liter (210-gallon) tank is completely sufficient, and it has now been planned accordingly.
However, another stove specialist said that this is far too small, that we would have problems if it gets cold for a few days, and that we would not get properly hot water. He also said that a hydronic stove only causes unnecessary costs instead of providing benefits.
Does anyone have experience regarding the tank size or the hydronic stove?
we are currently building a single-family house with 180 m² (1,938 sq ft) of living space in Bavaria.
We are having an air-to-water heat pump installed and, in addition, a hydronic stove to produce extra hot water.
Our construction company said that an 800-liter (210-gallon) tank is completely sufficient, and it has now been planned accordingly.
However, another stove specialist said that this is far too small, that we would have problems if it gets cold for a few days, and that we would not get properly hot water. He also said that a hydronic stove only causes unnecessary costs instead of providing benefits.
Does anyone have experience regarding the tank size or the hydronic stove?
Hello,
The storage size must be calculated precisely; otherwise, there will be issues. Just ask to see the calculation.
He is not entirely wrong. The stove does deliver some kWh, but only under very specific conditions. Whether this “yield” is economically justified by the additional investment should be examined 😉
Air source heat pumps and hydronic stoves operate efficiently at completely different temperature levels. This alone results in significant compromises regarding economic performance.
Best regards
svuja2804 schrieb:Whether an air source heat pump is the right heat generator for this location should be questioned. The milder the climate, the more efficient the air source heat pump. It would be different in the Lower Rhine region.
...
We are currently building a single-family house with 180m² (1,938 sq ft) of living space in Bavaria.
We are having an air-to-water heat pump installed, as well as a hydronic stove to additionally generate hot water.
svuja2804 schrieb:
...
Our construction company said an 800-liter (210-gallon) tank is completely sufficient and this is now planned. However, another stove installer says this is far too small, and that if it stays cold for a few days, we will have problems and won’t get really hot water.
The storage size must be calculated precisely; otherwise, there will be issues. Just ask to see the calculation.
svuja2804 schrieb:
... He also said a hydronic stove only causes unnecessary costs instead of providing benefits?
He is not entirely wrong. The stove does deliver some kWh, but only under very specific conditions. Whether this “yield” is economically justified by the additional investment should be examined 😉
Air source heat pumps and hydronic stoves operate efficiently at completely different temperature levels. This alone results in significant compromises regarding economic performance.
Best regards
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