Thanks - I'll look out for that
ASHP - Investigations and calculations
Re: ASHP - Investigations and calculations
Solar PV since July '22:
5.6kWp east/west facing
3.6kW Sunsynk hybrid inverter
2x 5.12kWh Sunsynk batteries
1.6kWp Hoymiles East/West facing PV on the man cave
Ripple DW 2kW
Ripple WB 200W
5.6kWp east/west facing
3.6kW Sunsynk hybrid inverter
2x 5.12kWh Sunsynk batteries
1.6kWp Hoymiles East/West facing PV on the man cave
Ripple DW 2kW
Ripple WB 200W
Re: ASHP - Investigations and calculations
They have quoted for a Daikin heat pump and cylinder (doesn't say which model), so it won't be their new Cosy 6 model - think we'd need 2 of those!!Andy wrote: ↑Sun Nov 05, 2023 10:02 pmYeah they are delighted with their cosy 6 which I have been unable to find any stats for whatsoever. They say it is a high temperature heat pump but I'd be very surprised if it is one of the fancy compressed helium based ones which do have good COP at higher temperatures.
Solar PV since July '22:
5.6kWp east/west facing
3.6kW Sunsynk hybrid inverter
2x 5.12kWh Sunsynk batteries
1.6kWp Hoymiles East/West facing PV on the man cave
Ripple DW 2kW
Ripple WB 200W
5.6kWp east/west facing
3.6kW Sunsynk hybrid inverter
2x 5.12kWh Sunsynk batteries
1.6kWp Hoymiles East/West facing PV on the man cave
Ripple DW 2kW
Ripple WB 200W
Re: ASHP - Investigations and calculations
Most likely propane then secondary exchanger for low temps. It's why the acquired EVE or whatever they were called, clever injected secondary exchanger, but that's not unique tech.Andy wrote: ↑Sun Nov 05, 2023 10:02 pmYeah they are delighted with their cosy 6 which I have been unable to find any stats for whatsoever. They say it is a high temperature heat pump but I'd be very surprised if it is one of the fancy compressed helium based ones which do have good COP at higher temperatures.
Re: ASHP - Investigations and calculations
OK - Octopus have found me a cancellation for the Heat pump survey - so now booked in for the 7th December ![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
Solar PV since July '22:
5.6kWp east/west facing
3.6kW Sunsynk hybrid inverter
2x 5.12kWh Sunsynk batteries
1.6kWp Hoymiles East/West facing PV on the man cave
Ripple DW 2kW
Ripple WB 200W
5.6kWp east/west facing
3.6kW Sunsynk hybrid inverter
2x 5.12kWh Sunsynk batteries
1.6kWp Hoymiles East/West facing PV on the man cave
Ripple DW 2kW
Ripple WB 200W
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- Posts: 1934
- Joined: Wed Jun 02, 2021 6:10 pm
Re: ASHP - Investigations and calculations
Guardian article about heat pumps: https://www.theguardian.com/environment ... ld-heating
Quite supportive, points out that national strategy needed for effective roll-out.
Quite supportive, points out that national strategy needed for effective roll-out.
2.0 kW/4.62 MWhr pa in Ripples, 4.5 kWp W-facing pv, 9.5 kWhr batt
30 solar thermal tubes, 2MWhr pa in Stockport, plus Congleton and Kinlochbervie Hydros,
Most travel by bike, walking or bus/train. Veg, fruit - and Bees!
30 solar thermal tubes, 2MWhr pa in Stockport, plus Congleton and Kinlochbervie Hydros,
Most travel by bike, walking or bus/train. Veg, fruit - and Bees!
Re: ASHP - Investigations and calculations
Ah well - the man from Del Monte says No
![Sad :(](./images/smilies/icon_e_sad.gif)
Heat loss calcs from Octopus show that I would need ~14kW, and the biggest pump they currently fit is 11kW - so they will refund my deposit and put me on the waiting list for when they start supplying 16kW pumps.
Not that far off the 12.5kW I calculated if you figure in the extra insulation below
Nice guy, very helpful - but his computer system got terminally confused with a couple of rooms that previously had insulated plasterboard (25mm insulation) fitted internally to the solid stone walls - apparently there is no suitable U value for that combination!!
Solar PV since July '22:
5.6kWp east/west facing
3.6kW Sunsynk hybrid inverter
2x 5.12kWh Sunsynk batteries
1.6kWp Hoymiles East/West facing PV on the man cave
Ripple DW 2kW
Ripple WB 200W
5.6kWp east/west facing
3.6kW Sunsynk hybrid inverter
2x 5.12kWh Sunsynk batteries
1.6kWp Hoymiles East/West facing PV on the man cave
Ripple DW 2kW
Ripple WB 200W
Re: ASHP - Investigations and calculations
But with a couple of storage heaters on the cheap slot for the extreme conditions it would be fine.richbee wrote: ↑Thu Dec 07, 2023 1:48 pmAh well - the man from Del Monte says No![]()
Heat loss calcs from Octopus show that I would need ~14kW, and the biggest pump they currently fit is 11kW - so they will refund my deposit and put me on the waiting list for when they start supplying 16kW pumps.
Not that far off the 12.5kW I calculated if you figure in the extra insulation below
Nice guy, very helpful - but his computer system got terminally confused with a couple of rooms that previously had insulated plasterboard (25mm insulation) fitted internally to the solid stone walls - apparently there is no suitable U value for that combination!!
![Rolling Eyes :roll:](./images/smilies/icon_rolleyes.gif)
16.9kW PV > 107MWh generated
Ripple 6.6kW Wind + 4.5kW PV > 22MWh generated
5 Other RE Coop's
105kWh EV storage
60kWh Home battery storage
40kWh Thermal storage
GSHP + A2A HP's
Rain water use > 510 m3
Ripple 6.6kW Wind + 4.5kW PV > 22MWh generated
5 Other RE Coop's
105kWh EV storage
60kWh Home battery storage
40kWh Thermal storage
GSHP + A2A HP's
Rain water use > 510 m3
Re: ASHP - Investigations and calculations
Or a log burner or 2 - and the fact that we don't heat to 21 degrees...nowty wrote: ↑Thu Dec 07, 2023 1:57 pmBut with a couple of storage heaters on the cheap slot for the extreme conditions it would be fine.richbee wrote: ↑Thu Dec 07, 2023 1:48 pmAh well - the man from Del Monte says No![]()
Heat loss calcs from Octopus show that I would need ~14kW, and the biggest pump they currently fit is 11kW - so they will refund my deposit and put me on the waiting list for when they start supplying 16kW pumps.
Not that far off the 12.5kW I calculated if you figure in the extra insulation below
Nice guy, very helpful - but his computer system got terminally confused with a couple of rooms that previously had insulated plasterboard (25mm insulation) fitted internally to the solid stone walls - apparently there is no suitable U value for that combination!!![]()
But they work to a standard calculation method and they can't deviate from it, especially if you want the BUS grant
Solar PV since July '22:
5.6kWp east/west facing
3.6kW Sunsynk hybrid inverter
2x 5.12kWh Sunsynk batteries
1.6kWp Hoymiles East/West facing PV on the man cave
Ripple DW 2kW
Ripple WB 200W
5.6kWp east/west facing
3.6kW Sunsynk hybrid inverter
2x 5.12kWh Sunsynk batteries
1.6kWp Hoymiles East/West facing PV on the man cave
Ripple DW 2kW
Ripple WB 200W
Re: ASHP - Investigations and calculations
Time to resurrect this - I now have a new company coming out next Tuesday to do a survey - Greenhome Heating - who are a HeatGeek Elite level and master level for Vaillant heat pumps!
Initial discussions are promising, that they are asking about pipework sizes and if it is possible to use larger pipes for the beginning of the runs to increase flow rate due to the required heat pump size.
I'm finding out about more about my system - like the fact that the pipes from the boiler under the kitchen floor and leading upstairs are 22mm (which is hopefully good), but the kitchen radiator is fed from pipes running back down the wall from the upstairs bathroom!
![FingersCrossed :xx:](./images/smilies/Fingers-Crossed.gif)
Initial discussions are promising, that they are asking about pipework sizes and if it is possible to use larger pipes for the beginning of the runs to increase flow rate due to the required heat pump size.
I'm finding out about more about my system - like the fact that the pipes from the boiler under the kitchen floor and leading upstairs are 22mm (which is hopefully good), but the kitchen radiator is fed from pipes running back down the wall from the upstairs bathroom!
![FingersCrossed :xx:](./images/smilies/Fingers-Crossed.gif)
![FingersCrossed :xx:](./images/smilies/Fingers-Crossed.gif)
![FingersCrossed :xx:](./images/smilies/Fingers-Crossed.gif)
Solar PV since July '22:
5.6kWp east/west facing
3.6kW Sunsynk hybrid inverter
2x 5.12kWh Sunsynk batteries
1.6kWp Hoymiles East/West facing PV on the man cave
Ripple DW 2kW
Ripple WB 200W
5.6kWp east/west facing
3.6kW Sunsynk hybrid inverter
2x 5.12kWh Sunsynk batteries
1.6kWp Hoymiles East/West facing PV on the man cave
Ripple DW 2kW
Ripple WB 200W
Re: ASHP - Investigations and calculations
Richbee
Let me know how you get on please.
Let me know how you get on please.
Last edited by Moxi on Sun Mar 31, 2024 7:26 pm, edited 1 time in total.