HvH combines air heat pump with panel radiators - temperature values?

In the manual for the mentioned heat pump, you can find the important data after 5s on page 23; a COP of about 2-2.5 at 0 degrees source temperature and 55° flow temperature can be read. The AZ is usually slightly below that. So feasible, but the power consumption is not negligible. We don't talk about the COP below 0°C then.

In the manual for the mentioned heat pump, you can find after 5 seconds on page 23 the important data; a COP of about 2-2.5 at 0 degrees source temperature and 55° flow temperature can be read. The AZ is usually slightly below that. So it’s feasible, but the power consumption is not negligible. We are not even talking about the COP below 0°C.

OMG. Not good values..... generally, we have 3-4 months in the range of 0 degrees and below......
This will be expensive (electricity).

Modern flat radiators have the advantage over old radiators that 70-80% of the heat is emitted through radiation. After more than one heating season, I can say: They work very well: They produce a pleasant warmth.


Olli

Hello

With flat radiators and also with radiators, heat emission works more by 70-80% through convection and not through radiation.


Olli

Hello Olli,

I have different information.

The flat radiator can emit up to 70% of the heat through radiation.
Well - whether it is 70% or 50% now. It’s not worth discussing. In any case, it is noticeably more than with the earlier, old radiators.

Regards Thorsten

Hi Thorsten

but that's not correct.
if you look at your radiator you will find convection plates between the panels.
These are there to improve the convection of the radiator.
According to your statement, the performance would only increase slightly by expanding to 2 or 3 panels.
Try placing, for example, a wooden board over the entire radiator up to the wall behind it.
The heat output and also the difference between the flow and return temperatures then change significantly.

Olli

Hello Olli,

I am happy to be proven wrong on this!

You are the expert. I am not.

Let's put it this way: I also know the old finned radiators. Very well, even.
I personally find the heat output of the flat radiators in the house overall much more comfortable in comparison. However, this may also be because I operate them with a relatively low flow temperature, so the radiators don't "glow"...

Best regards, Thorsten