CoP reading and syncing the data to emoncms.org

I have an Octopus install of an Daikin ESPAltherma 6kw heat pump and I have followed the tutorials to install the ESP board and I have the data flowing via a raspberry pi with HA to another pi with emoncms installed.

I’ve been able to get the data to show in a heatpump app, as shown below:


However it doesn’t seem to be recording the right CoP levels, I’m getting readings of about 0.005.
This compares to the CoP reading as calculated in HA around 5.

So I am an order of 1000 out. In my feeds I have this as my setting to calculate output heat.

If I change x4.2 to x4200 the charts don’t update to values in the expected range, will this only apply for new measurements or should it update retrospectively?

The second issue I need help with is how to get the data which is being captured with my local pi to go to emoncms.org so I can start contributing top open energy monitor. I have provided the r/w api key of my online account to my local emoncms, but when I go to inputs there is nothing showing.

Thanks in advance.

Changes will only apply to new measurements.

How have you set this up, exactly?

Ok changing it to 4200 and turning my heating on it’s showing the instantaneous CoP at 5, so thank you for clarifying that the values are only after updating.

For the syncing with online, on the emoncms installed on my pi, I log into it via the pi’s ip address, sync - sync inputs and have the r/w api key for my emoncms.org account.

It would be worth updating your emoncms install and getting the latest sync module, you can then authenticate with an emoncms.org username and password as well as the apikey and the functionality is better. You should be able to update from the Admin > Update page.

Perfect the update has worked. Just waiting for the information I’ve uploaded on heatpumpmonitor.org to be reviewed.

1 Like

Assuming this is the specific heat of water, 4180 would be a more accurate factor to use, though it will only reduce the heat calculation by 0.5%.

https://amesweb.info/Materials/Specific-Heat-Capacity-of-Water.aspx