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robl
@robl
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Honorable Member
Joined: Mar 23, 2022
Last seen: Apr 24, 2025
Profile Activity
Topics: 1 / Replies: 202
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RE: Battle of the charging technologies

I'm torn between the "Tesla future" which I want, and what I consider to be closer to reality - there's just not enough "Carbon budget" for everybody ...

3 years ago
Forum
Renewable-powered transport (EVs & e-bikes)
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RE: Heat wave 2022

We have a lot of insulation - 150mm EWI, and a very heavyweight house - brick & solid concrete floor, so it takes days and days to change the temp...

3 years ago
Forum
Insulation
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RE: High air source heat pump running costs – Vaillant AroTherm Plus

@Aceshigh The thermosypon effect will be from any hot water store, where a pipe exits and heads upwards, or horiz then upwards. It's most likely ju...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Solar PV for our shed

@editor To turn down the light brightness, you'd generally put a resistor in series. I wouldn't be worried about buying a unit like the one linked...

3 years ago
Forum
Solar Photovoltaic (PV)
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RE: Solar PV for our shed

@Mars I've done this kind of thing - there's an easy way, and a hard way! The easy way is to buy a solar panel + battery + PIR light like the one ...

3 years ago
Forum
Solar Photovoltaic (PV)
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RE: Can I Install My Own ASHP?

I think there's a PP subtlety - if an ashp is installed by an mcs installer, then it is PD (permitted Development). If it's diy, technically PP is ne...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Extra Low Voltage devices

@transparent Are your ELV applications generally fixed wiring? There is a fair amount of available 12V automotive plug in equipment, generally usi...

3 years ago
Forum
Energy Storage
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RE: Lessons from leaks

I'm guessing the pump is there to boost the flow of the water, in a low pressure DHW system? Try turning it off somehow, or turning it down, see if y...

3 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: Where to place the hot water cylinder?

@aceshigh I’ve heard a ‘london loop’ can prevent thermosiphoning - it’s a 30cm or so pipe down then looping back up. The down segment prevents thermo...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Two interesting hydrogen graphics

As others have said, I can't see a long term future for significant hydrogen pumped to homes for heating. It's so inefficient and complex to make, tr...

3 years ago
Forum
Well & Truly Off The Grid
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RE: Where to place the hot water cylinder?

I would try hard to put it inside the thermal envelope of the house. They're not normally noisy, but there's always lots of pipes, valves, an immersi...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Graham Hendra’s e-book is out on Kindle

@hughf I generally buy kindle books these days, my close up eyesight isn't as good as it used to be, so I find it easier to read. I also appreciat...

3 years ago
Forum
Buy & Sell
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