ᐅ Base consumption district heating heat exchanger

The temperature difference being measured is the delta between supply and return. This delta can be measured before the heat exchanger, on the network side, or after the heat exchanger, on the customer side. The latter would also be correct in my opinion if the heat exchanger belongs to the network operator.
If the measurement is taken after the heat exchanger, the losses of the heat exchanger do not appear in your energy balance and therefore not in the heat consumption.

Hutchinson123 schrieb:

We moved into our house a year ago, and since then I have been monitoring the energy consumption.
For us, it is 7–8 kWh per day, even in the middle of summer. When we are completely away from home, it is about 6 kWh. That means around 2000 kWh per

Can you differentiate between what is used for heating and what is for hot water?
I find 7 kWh per day for hot water quite realistic. That’s what we have as well.

PS: please use units correctly: kWh, not Kw/h

Only to a limited extent, as already mentioned:
With two people present, the consumption is about 8 kWh, and when absent (e.g., one week of vacation) about 6 kWh.
So approximately 2 kWh for hot water.
My mother has roughly the same consumption, as does a friend.
Both have gas heating systems.

So even if we don’t use any of the energy in any form, the meter still runs.
Accordingly, there is always some heat coming from the transfer station in the utility room.

Sorry about the units:
I’m a bit out of it at the moment 🙂

Hutchinson123 schrieb:

So even if we don't use any of the energy, in any form, the meter still runs.
In the utility room, heat always comes from the transfer station accordingly.

Same question, is the meter located before (grid side) or after (customer side) the transfer station?

Hutchinson123 schrieb:

So even if we don't use any of the energy, in any form, the meter keeps running.
There is always some heat coming from the transfer station into the utility room.

Well, just because you’re not drawing hot water doesn’t mean the energy isn’t being used to keep the water warm.
For example, through circulation or other losses.

2 kWh per day for hot water sounds incredibly low.

If the utility’s technical connection conditions (TABs) specify that the meter is installed on the network side at the heat exchanger, meaning that losses during non-consumption are charged to the customer, then this is generally lawful. By signing the contract, you have agreed to these TABs.

Conversely, utilities can also arrange to have the meter installed on the customer side, so that losses are not directly billed to the consumer. However, this is a simplified approach, as the utility typically spreads the unmeasured losses among all connected users or factors them into the price calculation.

Hutchinson123 schrieb:

With two people present, consumption is about 8 kWh, and during absence (e.g., one week vacation) about 6 kWh.
So about 2 kWh for domestic hot water.

The hot water storage tank also incurs losses even if you do not drain it. Heat losses due to radiation for a single-family home tank (120 liters (32 gallons)) are typically 50 to 80 watts depending on the year of construction and hot water temperature. This amounts to about 1.2 to 2 kWh per day.

Additionally, there are losses from hot water in the pipes, even when water is stagnant, simply because the pipes are connected to the storage tank. So, it’s not just the tank itself.

With 2 kWh, you can only heat about 35 liters (9 gallons) of water from 10 °C (50 °F) to 50 °C (122 °F), which is quite low for two people per day.
Add to that 2 kWh of storage tank losses, 2 kWh for fittings and pipe losses, and probably 2 kWh measured directly at the heat exchanger, which are included in the meter readings.