Small things matter

Wood stoves, pellets and other bio-fuels
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Fintray
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Re: Small things matter

#1421

Post by Fintray »

Joeboy wrote: Sat Mar 23, 2024 8:09 am Is the HP running OK Ian? 👍

We are now down to 15kWh per night from grid to run a bit of SH and charge batteries to start day around 50% soc. Looking forward to the bigger storage capacity soon.
HP is running well, Vaillant engineer just checked over the PCB connections and could find nothing wrong so looks like it was just a loose connection.
SWMBO was sceptical that it would keep the house warm but I've had to reduce the heating curve as she was saying it was too hot! :facepalm:

Aye the batteries will help to run the HP on fully cheap rate electric all day.
3.87kWp PV
10.24kWp PV SolarEdge system
Tesla Powerwall 2
100 x 47mm Navitron tubes (still being installed!) Now likely to be removed for more PV.
MK2 PV router DHW diverter
Morso 5kW WBS
Vaillant AroTherm 10kW ASHP
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Joeboy
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Re: Small things matter

#1422

Post by Joeboy »

Fintray wrote: Sat Mar 23, 2024 10:49 am
Joeboy wrote: Sat Mar 23, 2024 8:09 am Is the HP running OK Ian? 👍

We are now down to 15kWh per night from grid to run a bit of SH and charge batteries to start day around 50% soc. Looking forward to the bigger storage capacity soon.
HP is running well, Vaillant engineer just checked over the PCB connections and could find nothing wrong so looks like it was just a loose connection.
SWMBO was sceptical that it would keep the house warm but I've had to reduce the heating curve as she was saying it was too hot! :facepalm:

Aye the batteries will help to run the HP on fully cheap rate electric all day.
That's great to hear both for tech and performance. Is it hitting the usage figures you hoped for?
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
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Fintray
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Location: Aberdeenshire

Re: Small things matter

#1423

Post by Fintray »

Joeboy wrote: Sat Mar 23, 2024 10:51 am That's great to hear both for tech and performance. Is it hitting the usage figures you hoped for?
I initially had it programmed with a night set back temperature of a few degrees lower but have since lowered the heating curve and just set it to run without set back on purely weather compensation mode. Living room temperature consistently sitting at 25C so intending to take the heating curve down to 0.4 from 0.45.
3.87kWp PV
10.24kWp PV SolarEdge system
Tesla Powerwall 2
100 x 47mm Navitron tubes (still being installed!) Now likely to be removed for more PV.
MK2 PV router DHW diverter
Morso 5kW WBS
Vaillant AroTherm 10kW ASHP
Nissan Leaf
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Joeboy
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Re: Small things matter

#1424

Post by Joeboy »

Fintray wrote: Sat Mar 23, 2024 11:00 am
Joeboy wrote: Sat Mar 23, 2024 10:51 am That's great to hear both for tech and performance. Is it hitting the usage figures you hoped for?
I initially had it programmed with a night set back temperature of a few degrees lower but have since lowered the heating curve and just set it to run without set back on purely weather compensation mode. Living room temperature consistently sitting at 25C so intending to take the heating curve down to 0.4 from 0.45.
25! :shock: epic. A new way of living. 👏
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
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Fintray
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Location: Aberdeenshire

Re: Small things matter

#1425

Post by Fintray »

Don't have to worry about making sure the internal doors are closed as it's a nice even temperature throughout the house (bedroom radiator is off as like a cool bedroom).
3.87kWp PV
10.24kWp PV SolarEdge system
Tesla Powerwall 2
100 x 47mm Navitron tubes (still being installed!) Now likely to be removed for more PV.
MK2 PV router DHW diverter
Morso 5kW WBS
Vaillant AroTherm 10kW ASHP
Nissan Leaf
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Joeboy
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Re: Small things matter

#1426

Post by Joeboy »

Fintray wrote: Sat Mar 23, 2024 11:17 am Don't have to worry about making sure the internal doors are closed as it's a nice even temperature throughout the house (bedroom radiator is off as like a cool bedroom).
Astonishing! Can I ask how many kWhs through an average 24hrs cycle as we are with about 7deg airtemp?
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
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Fintray
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Location: Aberdeenshire

Re: Small things matter

#1427

Post by Fintray »

Joeboy wrote: Sat Mar 23, 2024 11:21 am
Fintray wrote: Sat Mar 23, 2024 11:17 am Don't have to worry about making sure the internal doors are closed as it's a nice even temperature throughout the house (bedroom radiator is off as like a cool bedroom).
Astonishing! Can I ask how many kWhs through an average 24hrs cycle as we are with about 7deg airtemp?
Go here https://heatpumpmonitor.org/ change the Min Days to zero (top right) and scroll down till you find Aberdeenshire and you can see the results so far.
3.87kWp PV
10.24kWp PV SolarEdge system
Tesla Powerwall 2
100 x 47mm Navitron tubes (still being installed!) Now likely to be removed for more PV.
MK2 PV router DHW diverter
Morso 5kW WBS
Vaillant AroTherm 10kW ASHP
Nissan Leaf
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Joeboy
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Re: Small things matter

#1428

Post by Joeboy »

Fintray wrote: Sat Mar 23, 2024 11:25 am
Joeboy wrote: Sat Mar 23, 2024 11:21 am
Fintray wrote: Sat Mar 23, 2024 11:17 am Don't have to worry about making sure the internal doors are closed as it's a nice even temperature throughout the house (bedroom radiator is off as like a cool bedroom).
Astonishing! Can I ask how many kWhs through an average 24hrs cycle as we are with about 7deg airtemp?
Go here https://heatpumpmonitor.org/ change the Min Days to zero (top right) and scroll down till you find Aberdeenshire and you can see the results so far.
Cheers, will look on desktop at home. Mobile not playing. :roll:
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
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Fintray
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Location: Aberdeenshire

Re: Small things matter

#1429

Post by Fintray »

Based on the previous 7 days it has averaged 23.55kWh/day of electric and produced 102.7kWh/day of heat with an average cop of 4.36. This includes the water heating cycles that tend to pull the cop down.
3.87kWp PV
10.24kWp PV SolarEdge system
Tesla Powerwall 2
100 x 47mm Navitron tubes (still being installed!) Now likely to be removed for more PV.
MK2 PV router DHW diverter
Morso 5kW WBS
Vaillant AroTherm 10kW ASHP
Nissan Leaf
AE-NMidlands
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Re: Small things matter

#1430

Post by AE-NMidlands »

that is really impressive. What makes it so much better than the generally-quoted COP of 3?
2.0 kW/4.62 MWh pa in Ripples, 4.5 kWp W-facing pv, 9.5 kWh batt
30 solar thermal tubes, 2MWh pa in Stockport, plus Congleton and Kinlochbervie Hydros,
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