SCOP
I’m curious to know what everyone’s SCOP on their ASHPs is. If you’ve been running your pump for a year (one winter and one summer) I’d love to know who has an annual COP of over 3.
Please pop your numbers below.
Buy Bodge Buster – Homeowner Air Source Heat Pump Installation Guide: https://amzn.to/3NVndlU
From Zero to Heat Pump Hero: https://amzn.to/4bWkPFb
Subscribe and follow our Homeowners’ Q&A heat pump podcast
I can only use the Carnot number from Emoncms HP app. Using the Carnot formula my number is 4.22. My total energy usage for the year 3634kwh. The "SCOP" number compares to previous oil usage of 1600litres/annum (16000kwh) and estimated energy usage from EPC and estimated energy usage from heat loss calculation.
How do you work out the COP some say its yield divided by consumption and others say yield plus consumption divided by consumption??
COP is heat delivered divided by power consumed.
So 100 kW / 20 kW = 5 COP
On my system (Vaillant Arotherm Plus 5kW hybrid system) it is showing from 1st January through to today, it has consumed 686 kWh and the yield is 3605 kWh, so a COP of 5.25, so happy with that, although the numbers are obviously a bit of a fudge as the boiler kicks in when the COP would be lower.
Our lifetime COP is 2.71 as we enter our fourth winter with this heat pump.
Buy Bodge Buster – Homeowner Air Source Heat Pump Installation Guide: https://amzn.to/3NVndlU
From Zero to Heat Pump Hero: https://amzn.to/4bWkPFb
Subscribe and follow our Homeowners’ Q&A heat pump podcast
Not sure if this has been posted. Theoretical but interesting.
We just had the first annual service. Ecodan R32 8.5kW as sole source for heating and hot water. Reading the numbers off the controller works out to 3.15 for the year. I was expecting lower because the hot water figure (captured on a third-party app called MMSPHeatPump) isn't great, even in summer.
- 23 Forums
- 2,098 Topics
- 46.2 K Posts
- 280 Online
- 3,385 Members
Latest Posts
-
RE: Ecodan consuming 100kwh per day in new build!!!
@anca1808 I have just reviewed the whole thread. In s...
By JamesPa , 16 minutes ago
-
RE: Heating coming on when not required
I played with a max heating temp but there is a world o...
By JamesPa , 11 hours ago
-
RE: Pressure drop Primary circuit
I've always regarded topping up heating systems as my j...
By JamesPa , 11 hours ago
-
RE: Heat pump solutions and/or installer recommendations for France
I’d travel to France for work if you were struggling wi...
By Damon Blakemore , 18 hours ago
-
RE: 5 Star Service from Havenwise
That's always a danger with any new good idea, @morgan....
By Majordennisbloodnok , 23 hours ago
-
Have your say in the Renewable Heating Hub Awards
It’s time to celebrate the best (and call out the worst...
By Mars , 1 day ago
-
-
RE: Mitsubishi cycling while on chilled water output
@iaack yes there's no denying that cold air sinks! I s...
By downfield , 2 days ago
-
RE: Weather compensated secondary circuits with Biomass
@andycoo that flooring sounds ideal. Extra volume is ...
By Sune , 2 days ago
-
If you are thinking of heating on the immersion conside...
By JamesPa , 3 days ago
-
RE: Surface mount or bury primaries for heat pump installation?
@tomasmcguinness, I think your best bet would be using ...
By Aventus Eco , 3 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
@toodles all depends on asking the right questions! And...
By Tim441 , 3 days ago
-
RE: Commencing on an ASHP Installation Process
I received confirmation this morning that my Greener Ho...
By Sheriff Fatman , 4 days ago
-
@jamespa Thanks for the advice - very helpful. I had al...
By abam48 , 5 days ago