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JamesPa
JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 17, 2026
Topics: 27 / Replies: 5245
Reply
RE: Solar inverters - where does the energy go when clipping?

It's a good question and one which I have asked myself. We really need a solar panel physicist to answer, I am a lapsed physicist but never really st...

1 year ago
Reply
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

The volumiser provides extra system volume which may reduce cycling or may be necessary for defrost if your system doesn't otherwise have sufficient w...

1 year ago
Reply
RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

I believe so, we are looking for difference so as long as you can clamp consistently then it doesn't matter if the figure isn't perfect. I stress th...

1 year ago
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RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

@tim441 if you want to you can work out roughly how much it's costing by measuring the temperature drop across the buffer flow to flow. The cost is r...

1 year ago
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RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

15% or more typically The problem is not loss of energy (which as you say is small) its reduction in flow temperature to the emitters (due to the mi...

1 year ago
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RE: Heat loss calculators and spread sheets

Pretty much that, basically (1) make sure that the fabric model represents the actual fabric and (2) adjust the ACH to fit measured loss. Here is th...

1 year ago
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RE: Fujitsu Waterstage WOYG160LJL Air Source Heat Pump

As long as they follow the weather compensation I wouldn't worry for now, You probably won't want room influence anyway. If they aren't following th...

1 year ago
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RE: Fujitsu Waterstage WOYG160LJL Air Source Heat Pump

3 times per hour is reasonable. Are you sure it isn't doing defrost rather than cycling because of overcapacity?

1 year ago
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RE: Heat loss calculators and spread sheets

@lakey Do you have half hourly or daily readings and what was the heating pattern. Basically my ashp was sized on gas meter readings and the fabric s...

1 year ago
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RE: Twin 10kw Grant Aerona Volumiser Tanks using lots of power

Thats the only logical explanation because for their main function they emphatically dont. Could be, then once he had received them he realised t...

1 year ago
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RE: Heat loss calculators and spread sheets

I remember thats where you started (conservatism in heat loss). What do you actually know in total about heat loss. Do you have any consumption fig...

1 year ago
Reply
RE: Fujitsu Waterstage WOYG160LJL Air Source Heat Pump

Once its running at lowest possible FT you might be able to reassess the operating mode when its mild. Depending on your house, when its mild (which ...

1 year ago
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