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Old_Scientist
@old_scientist
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Prominent Member
Joined: Jun 16, 2024
Last seen: Oct 14, 2026
Profile Activity
Topics: 9 / Replies: 566
AllTopicsReplies
Reply
RE: Flushing system, cleaning and inhibitor

@papahuhu No smell, just the dirty brownish orange colouration. That was a particularly dirty sample I collected for the purposes of the photo, afte...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Who's your electricity provider and what's your tariff?

@toodles I don't bother saving anything for after the peak - e.g, the period from 7pm until 2am. The logic being, I am paid 29p for exporting it bef...

2 months ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
Reply
RE: Flushing system, cleaning and inhibitor

Thanks for the replies. System volume is around 180L. I have no idea if inhibitor was originally added. They added glycol which may have contained i...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Flushing system, cleaning and inhibitor

Thanks both. That was my thought (hope) too, that the single old towel rail radiator was the culprit and that rust colouration naturally spreads ...

2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: PV and battery long payback - sense check query

No - that's what G100-2 gives you. An 8kW inverter that's export limited to 3.68kW is 8kW without G100. An 8kW inverter that is *output* limited to 3....

2 months ago
Forum
Energy Storage
Topic
Flushing system, cleaning and inhibitor
2 months ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 19
Views: 1106
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RE: Minimum system volume

We have large radiators as our emitters. Room temp is 20.0C, flow temp is around 33-35C at temperatures where we may see defrost cycles. From memory...

2 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Minimum system volume

Further, there was a long discussion of the benefits of a volumiser to add system volume here: For reference, I have a relatively large system vo...

2 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Electricity price predictions

I think the principle is that both parties are better off - the supplier because they can receive extra payments for grid balancing (or whatever), and...

2 months ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
Reply
RE: Minimum system volume

See here: which suggests 25-27L per kW for very low flow temps, such as with UFH. What is your heat loss, what is the output and minimum recomm...

2 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Electricity price predictions

The Octopus Saving Sessions are regional, and are defined by the electricity regions I believe (so a lot larger than the BSP's @transparent refers to ...

2 months ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
Reply
RE: Electricity price predictions

Interesting read from NESO on their Demand Flexibility Service (DFS), published this week: I think this is what is behind things like Octopus Sav...

2 months ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
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