When designing this dashboard, a key choice was to anonymise the owners of the heat pumps. If participants of this forum want to link to their own systems, then they can. Linking in the other direction would require additional level of agreement from users, not all of whom use the forum, or are sharing data from several customers.
I’d prefer to keep “Location” as it’s more friendly to outside visitors who want to see where systems are based. Showing the system ID on the right-hand side in place of the “Summary” icon would not take up any more room.
If I can only vote for 1 change its this one. now that we have the attributes kindly done by timbones to allow these to be separated. DHW usage quantity varies widely according to personal circumstances and has such a huge effect on SCOP. trying to compare against another system to figure out if they’ve done a better job than you (so you can ask them how!) would be so much easier if DHW can be filtered out.
Hi Tim, completely agree and I think this would be a good incentive for people to configure systems with DHW, i.e. it would add significant value to having your system flag when in DHW mode.
Again perhaps filters could be used to exclude systems which don’t have this breakdown?
When comparing one day to the next on my system the DHW runs massively skew the COP as the % of total energy used for DHW will typically be higher on milder days as the heating runs are shorter and less energy intensive.
I was just using the Compare function, COP vs DT (Flow-Outside temp)
hourly COP, seems to autoscale to 0-45. Perhaps this was because some hourly COPS are slightly over 5, so graph should scale more than 5, but this scaling leaves large part of the graph blank. see example below:
Daily COP is ok , data contained no values over 5 so autoscale worked. don’t know if it would behave with some daily’s over 5 or not.
I noticed its limited to 30 days in the description
I was really hoping to look over a 60 or 90 days period. it allows me to select date span longer back than that in the calendar but then it seemed to jump to a default 1 day period. is there any fundamental reason for the 30 day duration limitation? I know I can select a different, further back 30 day period, I just can’t select longer than 30 days period without it refusing… would be nice if this could be increased… especially when looking at daily COP rather than hourly.
Hello Ian, I hope to get some more development time on HeatpumpMonitor soon and will try and look at this. Just finishing some work on a new networking implementation for the emonPi/base before I can turn my attention to this.
Might it be possible to have a toggle on the main last 30 days graph to switch it DHW only, please? (For electricity consumption, generated heat and COP)
Or, alternatively, might it be possible to achieve the same with a separate app? “My Heatpump DHW”
I appreciate this would only be of use for those of us that have been able to setup a feed for “heatpump_dhw”.
Is there a way to have create a feed in emoncms that returns a value of zero for electric and heat (power/energy) when the boolean heatpump_dhw is zero?
Although, that wouldn’t work for me currently as my heatpump_dhw feed needs manually uploading each day because I accidentally uploaded some data with timestamps for Dec 2024 (rather than 2023) which I think has resulted in the sync automation thinking there’s nothing to upload from local to cloud. (Only 326 days of manual upload to go before it will work again, haha)
I’ve been wondering if we could calculate “normalised COP” figures, that are pegged at a certain temperature. Each system has a pretty linear relationship between COP and Outdoor temp, so it should be possible to calculate the gradient from their data and produce “COP at 7°C”, say. This figure will include the performance characteristics of the heat pump itself, the heating system it’s plumbed into and how it’s controlled, but without the influence of local climate. This should make it easier to compare systems across the country / world.
For example: daily COP for Stratford-upon-Avon, Vaillant (blue) vs. Sheffield, Vaillant (Red)
I’d say that Sheffield is “winning” at temperatures below 5°C, even though the average COP (4.0) was lower than the other system (4.2) for that period. [Oct 1st to Dec 31st, 2023]
Side thought: the other metric “COP vs Flow - Outdoor temp” removes the influence of flow temperature, control strategies and weather, and is mostly about the heat pump unit itself.
Hello All, I’m fairly new to OEM, but been involved in renewable heating for many years and OEM is a fantastic tool to add to the mix, thanks to all involved in making it so - every system should have one!
Not sure if this is the best place to put this, feel free to move, but regarding MID metering. Whilst finding my way around HeatpumpMonitor, I happened to notice if you select the fields; MID Metering, Electric meter, and Heat meter, that quite a few systems have ticked the MID metering box, but may not have both at least class 1 electric and class 2 heat meters, which could be a typo for some? I dare say other means of measuring maybe reasonably accurate and not meaning to throw the cat among the pigeons, but surprised the system allows you to tick the MID box if you don’t have the specified class of meters, especially given credibility the certified MID metering tag may give!
We do keep a close eye on the meters that have been selected by submissions, and periodically review them to check for mistakes. I can only see 2 or 3 systems marked as having MID that might not (which I will review).
We’ll also look at adding some automatic validation of those fields to ensure accuracy, though I’m sure there will be exceptions. For example, a recent discovery is that Vaillant Arotherm+ heat pumps do have a built-in MID certified electric meter.
I went through and re-added it, it came up with the box at the top to reload the data which it said would take 5 mins. I’ve just been back in and I still have no system.
I’ll try to add it again, but I don’t know if you can see anything your side to show that it exists now?
