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robl
@robl
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Honorable Member
Joined: Mar 23, 2022
Last seen: Dec 4, 2025
Profile Activity
Topics: 1 / Replies: 206
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RE: Comparing & Evaluating the Efficiency of Gas Heating vs. ASHP Powered by Gas-Fired Electricity

‘Natural’ gas energy content is usually given at the Lower Heating Value (LHV). This value is not the total chemical energy, but assumes all water cr...

2 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Placement of Samsung R290 ASHP

The choice of refrigerant is always a compromise. So far as I'm aware, they are generally: Poisonous / High GWP / ozone depleting / flammable / sup...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Placement of Samsung R290 ASHP

Compared to having ‘natural’ gas piped continuously into a home -a permanent gas source, the tiny amount of r290 kept safely in a heatpump for many ma...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Placement of Samsung R290 ASHP

I wanted to put our r290 gshp near a kitchen drain. And found to my dismay that it didn’t have a trap! Bit of a faff, but managed to swap it out for...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Fogstar 15.5kWh upright solution

@ggw When the sunsynk is used in lithium % mode, it also still makes use of the basic voltage figures from the lead acid mode - these must be set corr...

2 years ago
Forum
Energy Storage
Reply
RE: New Fogstar 15.5kWh upright solution

@ggw I left ours in AGM volts mode for maybe 2 months, the adaption was automatic but slow. I did try and hurry it along by manually tweaking the A...

2 years ago
Forum
Energy Storage
Reply
RE: New Fogstar 15.5kWh upright solution

We have 304Ah batts too, but after letting the sunsynk auto detect to the size, it thinks they are vastly different to this. Our system now works ver...

2 years ago
Forum
Energy Storage
Reply
RE: New Fogstar 15.5kWh upright solution

When we first installed our Sunsynk I initially tried to use Li-bms as the battery state - this was dreadful, resulting in all sorts of weird behaviou...

2 years ago
Forum
Energy Storage
Reply
RE: New Fogstar 15.5kWh upright solution

@ggw I had a lot of trouble with the sunsynk originally(ok, I still do…). New LiFePo4 battery, with the Seplos bms that talked with it, and yet I fou...

2 years ago
Forum
Energy Storage
Reply
RE: New Fogstar 15.5kWh upright solution

@ggw While I’ve set it to work down to 1%, it’s an extremely rare occurance. Most of the time it cycles 90% to 50%. While I appreciate the degradati...

2 years ago
Forum
Energy Storage
Reply
RE: New Fogstar 15.5kWh upright solution

Screenshots from our Sunsynk. We have an old independent 4kWp FIT install, and our elec is Octopus Go. The sunsynk charges from night elec and PV, r...

2 years ago
Forum
Energy Storage
Reply
RE: New Fogstar 15.5kWh upright solution

@misterb I'd originally intended to top balance in parallel. When I thought it through, it just seemed a lot of faff - how to compress the cells? ...

2 years ago
Forum
Energy Storage
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