Search with Wattson
Activity
 
Notifications
Clear all

Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!

RobS
@robs
Member
Estimable Member
Joined: Oct 15, 2024
Last seen: May 25, 2026
Topics: 0 / Replies: 134
Reply
RE: Setback savings - fact or fiction?

True there is a variation but importantly it's understandable. The ~560W value occurs before a defrost at 5C and so the ~560W is at the colder end of ...

3 months ago
Reply
RE: Setback savings - fact or fiction?

@cathoderay The input power is largely determined by the compressor speed (it's by far the largest component) and that is set by the controller alg...

3 months ago
Reply
RE: Setback savings - fact or fiction?

Or part of a cycle like a defrost or ramp up. Being able to set an arbitrary interval gives the greatest flexibility and doesn't preclude the use of h...

3 months ago
Reply
RE: Setback savings - fact or fiction?

Hi @cathoderay This is a reply to two of your posts together.   It's not a room stat per se but acting as one at the moment and its use...

3 months ago
Reply
RE: Setback savings - fact or fiction?

Hi @sunandair I've posted charts showing the input power ramping up to the same 1-1.5kW in both (defrost and non-defrost) cases. Your image doesn't...

3 months ago
Reply
RE: Setback savings - fact or fiction?

Hi @sunandair The analysis I previously posted was 90+ minutes long and not just 11 minutes. All of the electrical energy passing into the system go...

3 months ago
Reply
RE: Setback savings - fact or fiction?

Hi @cathoderay If it helps any here's this period with recorded numbers: The off period is 1h22m and the on period is 2h44m, the system's steady ...

3 months ago
Reply
RE: Setback savings - fact or fiction?

No worries! The WC curve is setup for our usual 20-21C IAT so that's what the heat pump is trying to achieve, but the "thermostat" is set lower and so...

3 months ago
Reply
RE: Setback savings - fact or fiction?

@cathoderay As I wrote above, it's a "non-defrost restart", so it won't look like a typical defrost. The peak flow temp is only 28.5C and the CO...

3 months ago
Reply
RE: Setback savings - fact or fiction?

In the context of the described time periods yes but not the conclusion of the analysis, which is more important. During the defrost less electricity ...

3 months ago
Reply
RE: Setback savings - fact or fiction?

@sunandair I haven't made any claims of saving energy, @cathoderay has so maybe you are confusing the two of us? My analysis showed that a small ad...

3 months ago
Reply
RE: Setback savings - fact or fiction?

I was merely curious as to the resolution of the data used by the Midea control algorithm and the resolution of its outputs.   Given that...

3 months ago
Page 4 / 12
Share:

Join Us!

Latest Posts

Members Online

Click to access the login or register cheese
Protected By
Shield Security PRO