Trystan Lea
@trystanlea.bsky.social
Monitoring heat pumps at HeatpumpMonitor.org, open source energy monitoring at OpenEnergyMonitor.org.
Reposted by Trystan Lea
Big thanks to TBarton Electrical for doing an excellent job installing the solar and battery system, they've been great to work with tbartonelectrical.co.uk
March 30, 2025 at 12:11 AM
Big thanks to TBarton Electrical for doing an excellent job installing the solar and battery system, they've been great to work with tbartonelectrical.co.uk
It's been great to be part of this project. While most of the work is credit to Chris from Griffith's heating, Glyn and I did the heatloss calc and are involved in commissioning, optimisation and monitoring of course
Heat pumps are running! Still lots of tweaking and tidying to do but building is heating up 😁
March 29, 2025 at 10:42 AM
It's been great to be part of this project. While most of the work is credit to Chris from Griffith's heating, Glyn and I did the heatloss calc and are involved in commissioning, optimisation and monitoring of course
Reposted by Trystan Lea
When I was getting our heat pump here, because of the twitter heatpump discourse, I was worried that our model was oversized, but found in practice that it actually performs very well! (It's well within @openenergymon.bsky.social's range of useful oversizing).
March 26, 2025 at 5:10 PM
When I was getting our heat pump here, because of the twitter heatpump discourse, I was worried that our model was oversized, but found in practice that it actually performs very well! (It's well within @openenergymon.bsky.social's range of useful oversizing).
Reposted by Trystan Lea
Heat pumps are running! Still lots of tweaking and tidying to do but building is heating up 😁
March 26, 2025 at 2:05 PM
Heat pumps are running! Still lots of tweaking and tidying to do but building is heating up 😁
Reposted by Trystan Lea
30kW SolarEdge PV and 65kWh of GivEnergy Commercial battey system is now up and running, with @openenergymon.bsky.social monitoring 😀
March 26, 2025 at 7:42 PM
30kW SolarEdge PV and 65kWh of GivEnergy Commercial battey system is now up and running, with @openenergymon.bsky.social monitoring 😀
We've written up the main findings from HeatpumpMonitor.org so far here docs.openenergymonitor.org/heatpumpmoni..., presenting this tomorrow at the DESNZ/IEA heatpump research seminar 🤓
March 10, 2025 at 4:58 PM
We've written up the main findings from HeatpumpMonitor.org so far here docs.openenergymonitor.org/heatpumpmoni..., presenting this tomorrow at the DESNZ/IEA heatpump research seminar 🤓
Reposted by Trystan Lea
Solar PV install is coming along, only another 43 panels to go! 🥵⚡
February 27, 2025 at 8:33 PM
Solar PV install is coming along, only another 43 panels to go! 🥵⚡
Reposted by Trystan Lea
I really enjoyed this episode of the @TransitionShow.mastodon.energy.ap.brid.gy podcast with @richardlowes.bsky.social, thanks for the @openenergymon.bsky.social heatpumpmonitor.org mention, "brings an element of fun into heatpumps" 😁
February 26, 2025 at 6:11 PM
I really enjoyed this episode of the @TransitionShow.mastodon.energy.ap.brid.gy podcast with @richardlowes.bsky.social, thanks for the @openenergymon.bsky.social heatpumpmonitor.org mention, "brings an element of fun into heatpumps" 😁
Reposted by Trystan Lea
Here's a video about an interesting ASHP installation I was involved with in a solid stone cottage, the combination of insulation, air tightness, UFH and MVHR has made for a very efficient low-cost heating system with a SCOP of 5.1 for space heating 😀 📈 youtu.be/YouOLThHSNk?...
February 14, 2025 at 1:17 PM
Here's a video about an interesting ASHP installation I was involved with in a solid stone cottage, the combination of insulation, air tightness, UFH and MVHR has made for a very efficient low-cost heating system with a SCOP of 5.1 for space heating 😀 📈 youtu.be/YouOLThHSNk?...
Reposted by Trystan Lea
This is part of a big electrification and decarbonisation project for the building to remove deoendancy on LPG, reduce running costs and increase energy security; this will involve 2x 16kW Viessmann ASHP cascade, 69kWh of GivEnergy storage, 30kW of PV and @openenergymon.bsky.social monitoring 😀
I've been helping out on a solar PV installation on our @Openenergymon shared office space, it will be a 30kW SolarEdge array! Today we fitted the rails and got the first couple of panels in place 😁
February 17, 2025 at 10:44 PM
This is part of a big electrification and decarbonisation project for the building to remove deoendancy on LPG, reduce running costs and increase energy security; this will involve 2x 16kW Viessmann ASHP cascade, 69kWh of GivEnergy storage, 30kW of PV and @openenergymon.bsky.social monitoring 😀
Reposted by Trystan Lea
More panels going up! Only 60 more to go 😅
February 19, 2025 at 11:08 AM
More panels going up! Only 60 more to go 😅
Reposted by Trystan Lea
I've been helping out on a solar PV installation on our @Openenergymon shared office space, it will be a 30kW SolarEdge array! Today we fitted the rails and got the first couple of panels in place 😁
February 17, 2025 at 10:34 PM
I've been helping out on a solar PV installation on our @Openenergymon shared office space, it will be a 30kW SolarEdge array! Today we fitted the rails and got the first couple of panels in place 😁
Reposted by Trystan Lea
This Skill Builder heatpump now one of the best performing systems in the country thanks to a Heat Geek transformation! Here's the live and historic data monitored independently by @openenergymon.bsky.social 👏 heatpumpmonitor.org/system/view?...
February 19, 2025 at 8:48 PM
This Skill Builder heatpump now one of the best performing systems in the country thanks to a Heat Geek transformation! Here's the live and historic data monitored independently by @openenergymon.bsky.social 👏 heatpumpmonitor.org/system/view?...
Reposted by Trystan Lea
Big update incoming for OpenVehicles (OVMS) Android app 😍
February 7, 2025 at 4:14 PM
Big update incoming for OpenVehicles (OVMS) Android app 😍
Reposted by Trystan Lea
Interesting podcast about the Electrification Of Heat government heat pump trial results with Katrina Young from @energysyscat.bsky.social and @trystanlea.bsky.social from @openenergymon.bsky.social
February 2, 2025 at 5:29 PM
Interesting podcast about the Electrification Of Heat government heat pump trial results with Katrina Young from @energysyscat.bsky.social and @trystanlea.bsky.social from @openenergymon.bsky.social
Reposted by Trystan Lea
Current issues with heatpump installations: good write up by @trystanlea.bsky.social on the @openenergymon.bsky.social forums community.openenergymonitor.org/t/over-sized...
Over-sized heat loss = over estimated design temperatures
I wanted to share some thoughts about where I think we are with heat pump system design in the UK as we start 2025. There is a large performance gap between heat pumps that have been designed, instal...
community.openenergymonitor.org
January 24, 2025 at 8:59 AM
Current issues with heatpump installations: good write up by @trystanlea.bsky.social on the @openenergymon.bsky.social forums community.openenergymonitor.org/t/over-sized...
Reposted by Trystan Lea
It’s 4C outside and the ASHP is nearly hitting a COP of 5 😍😍😍
It’s been running continuously since 1320 yesterday despite there being mist and high humidity!
#HeatPumpsWork!
It’s been running continuously since 1320 yesterday despite there being mist and high humidity!
#HeatPumpsWork!
December 27, 2024 at 6:07 AM
It’s 4C outside and the ASHP is nearly hitting a COP of 5 😍😍😍
It’s been running continuously since 1320 yesterday despite there being mist and high humidity!
#HeatPumpsWork!
It’s been running continuously since 1320 yesterday despite there being mist and high humidity!
#HeatPumpsWork!
Reposted by Trystan Lea
16) the UK arguably has Europe's best example of such initiative with @trystanlea.bsky.social's heatpumpmonitor.org which @adambell.bsky.social's heating engineer uses and @madgabes.bsky.social watches. Finland hasn't a patch on this initiative😉
I discuss it here
open.spotify.com/episode/3RAm...
I discuss it here
open.spotify.com/episode/3RAm...
HeatpumpMonitor.org
heatpumpmonitor.org
December 11, 2024 at 3:53 PM
16) the UK arguably has Europe's best example of such initiative with @trystanlea.bsky.social's heatpumpmonitor.org which @adambell.bsky.social's heating engineer uses and @madgabes.bsky.social watches. Finland hasn't a patch on this initiative😉
I discuss it here
open.spotify.com/episode/3RAm...
I discuss it here
open.spotify.com/episode/3RAm...
Reposted by Trystan Lea
I've been on the tools this week with @trystanlea.bsky.social retrofitting a heat meter and re-wiring to fit a Homley controller to this 3yr old Grant heat pump, COP efficiency should be considerably improved, will report back...
December 11, 2024 at 5:33 PM
I've been on the tools this week with @trystanlea.bsky.social retrofitting a heat meter and re-wiring to fit a Homley controller to this 3yr old Grant heat pump, COP efficiency should be considerably improved, will report back...
Reposted by Trystan Lea
*eyes water*
National average pricing for Octopus Energy Agile Tariff: Thu 12-12-2024
Min: 18.9p (00:00)
Max: 100.0p (16:00)
Avg: 53.4p
Avg Excl Peak: 46.5p
Peak 4pm-7pm: 99.6p
Get graphs & pricing for all 14 UK regions at www.energy-stats.uk
Min: 18.9p (00:00)
Max: 100.0p (16:00)
Avg: 53.4p
Avg Excl Peak: 46.5p
Peak 4pm-7pm: 99.6p
Get graphs & pricing for all 14 UK regions at www.energy-stats.uk
December 11, 2024 at 4:10 PM
*eyes water*
Reposted by Trystan Lea
BEST PERFORMING HEAT PUMP in UK
costs 3.8 pence per kWh to heat an older property (with solid brick walls) just using radiators.
If the system was to use the @ovoenergy.bsky.social plus tarrif it would only cost 2.99 pence per kWh
You can hear about it on the BetaTalk podcast
costs 3.8 pence per kWh to heat an older property (with solid brick walls) just using radiators.
If the system was to use the @ovoenergy.bsky.social plus tarrif it would only cost 2.99 pence per kWh
You can hear about it on the BetaTalk podcast
December 3, 2024 at 1:22 PM
BEST PERFORMING HEAT PUMP in UK
costs 3.8 pence per kWh to heat an older property (with solid brick walls) just using radiators.
If the system was to use the @ovoenergy.bsky.social plus tarrif it would only cost 2.99 pence per kWh
You can hear about it on the BetaTalk podcast
costs 3.8 pence per kWh to heat an older property (with solid brick walls) just using radiators.
If the system was to use the @ovoenergy.bsky.social plus tarrif it would only cost 2.99 pence per kWh
You can hear about it on the BetaTalk podcast
Reposted by Trystan Lea
We've got a full year of monitoring for heating & hot water in our #Passivhaus EnerPHit retrofit. Our total electricity usage, for heating and hot water, between 14th November 2023 and 14th November 2024 was just £175!
November 23, 2024 at 3:37 PM
We've got a full year of monitoring for heating & hot water in our #Passivhaus EnerPHit retrofit. Our total electricity usage, for heating and hot water, between 14th November 2023 and 14th November 2024 was just £175!
Reposted by Trystan Lea
Yes that'll be needed to match and smooth it out hour by hour @trystanlea.bsky.social has done some more detailed analysis including battery and gas back up here. Probably a 9kWh battery is enough?
trystanlea.org.uk/communityene...
trystanlea.org.uk/communityene...
Trystan Lea
https://trystanlea.org.uk/communityenerg…
November 23, 2024 at 8:16 PM
Yes that'll be needed to match and smooth it out hour by hour @trystanlea.bsky.social has done some more detailed analysis including battery and gas back up here. Probably a 9kWh battery is enough?
trystanlea.org.uk/communityene...
trystanlea.org.uk/communityene...
Reposted by Trystan Lea
Article w/ @euronion42.bsky.social looking at using methanol for long duration energy storage is out of the paywall!
Liquids = ultimate resilience.
Openly accessible from now until forever.
doi.org/10.1016/j.jo...
More thoughts on methanol below...
Liquids = ultimate resilience.
Openly accessible from now until forever.
doi.org/10.1016/j.jo...
More thoughts on methanol below...
A renewable power system that is reliable whatever the weather? 🌬️ ⛅️
The case for e-methanol with carbon cycling ♻️: liquid storage that can be built anywhere
🚨 New impulse paper 🚨 in Joule with @euronion42.bsky.social
Paper: doi.org/10.1016/j.jo...
Slides: nworbmot.org/energy/brown...
The case for e-methanol with carbon cycling ♻️: liquid storage that can be built anywhere
🚨 New impulse paper 🚨 in Joule with @euronion42.bsky.social
Paper: doi.org/10.1016/j.jo...
Slides: nworbmot.org/energy/brown...
November 15, 2024 at 5:13 PM
Article w/ @euronion42.bsky.social looking at using methanol for long duration energy storage is out of the paywall!
Liquids = ultimate resilience.
Openly accessible from now until forever.
doi.org/10.1016/j.jo...
More thoughts on methanol below...
Liquids = ultimate resilience.
Openly accessible from now until forever.
doi.org/10.1016/j.jo...
More thoughts on methanol below...
Reposted by Trystan Lea
Test results are one thing, but how do heat pumps work in reality?
Really well in most cases, according to the live heat pump performance data on www.heatpumpmonitor.org, a website from the good folks at @openenergymon.bsky.social.
Really well in most cases, according to the live heat pump performance data on www.heatpumpmonitor.org, a website from the good folks at @openenergymon.bsky.social.
www.heatpumpmonitor.org
November 22, 2024 at 2:01 PM
Test results are one thing, but how do heat pumps work in reality?
Really well in most cases, according to the live heat pump performance data on www.heatpumpmonitor.org, a website from the good folks at @openenergymon.bsky.social.
Really well in most cases, according to the live heat pump performance data on www.heatpumpmonitor.org, a website from the good folks at @openenergymon.bsky.social.