I have a Nibe ground source heat pump and I’ve integrated it to HA through its Modbus integration. This gives me sensors for energy production (both heat and hot water) as well as its power usage.
At first I used the heat pumps production as solar cells in the Energy Dashboard, as it can be viewed as stored solar energy. However the solar section is targeting electric energy and by using it for the heat pump it added the heat pump production to the overall energy consumption and thereby disturbing the fosil footprint.
Then I saw, in one of the HA forums, another user using the Gas section. As Gas produces heat its concept is maybe closer to a heat pump. Although this seems to be a better solution, there are a couple of issues:
There is no cost related to the heat produced by the heat pump. I suppose you could use a negative costs to see what savings you’ve made.
There is no way of indicating how much electric energy that has been put into the heat pump.
There is no indication on how efficient the heat pump is.
I suggest that the Energy Dashboard adds an additional type of energy “entity” for heat pumps which addresses the above shortcomings. This will give the user a more complete overview of his/her energy consumption and production.
Awesome and also with the calculation of cop.
That would be awesome.
Most of the heatpump heating systems also have thermic output energy for cop calculation.
This would be a great feature. I have a similar request but for solar collector panels which produce hot tap water. This basically the same story: electricity is used to drive a circulation pump, this transports solar heat from the panels to the tap water tank via a transport medium. The control system outputs the captured heat energy in kWh. Would be nice to visualize this in the energy dashboard. This way you know how much heat is needed to heat the tap water.
second this. There are countless discussions on here about best way to calculate COP, umpteen variants of templates all slightly different.
If there was a “heat pump” section of the energy dashboard, fed with the “energy consumed” and “energy produced” sensors from the heat pump (up to the user how to get those), calculating COP in a consistent way, then that’d be very useful. and showing the green credentials of HA, as all you can add right now to the energy dashboard is gas heating
Currently I use Grafana for an overview of the heat pump’s in-, output and efficiency. Unfortunately I didn’t enable Grafana and Influxdb at new years so a yearly view with each much doesn’t work properly (it ends the months on the 23rd or similar) but the monthly view is alright, with each day displayed.
As seen in the picture, when the outdoor temperature gets higher less heat is consumed and the COP around 4 decreases as the hotwater production isn’t that efficient due to its higher temperature. The same can be said about when the temperature drops as the temperature on the radiators need to increase and has the result that the COP will go down again. Somewhere 5 C there seems to be an optimum COP.
Note that we have a down hole heat pump and high temperature radiators. With floor heating you’ll get higher COP as its temperature is much lower at the same heat production level.
I am in a similar situatiën with my Heliotherm soil based heatpump, which I just managed to include in Home Assistant. I would like to add it to the energy section, as I plan to make my own smart grid with solar panels, various appliances and the heat pump. Nice for the situation when the policy on back production of solar enrgy changes. I therfore fully support the request by Jorgen.
