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JamesPa
JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Oct 20, 2026
Topics: 28 / Replies: 5524
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RE: Tomato Energy

Not really that much wasted. In winter, assuming your DHW tank is within the heated envelope of the house, it offsets the space heating, so no actu...

2 years ago
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RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

The second one avoids the possibility that all the hot water collects at the top and is bypassed by the returning flow. Not a lot really, but perhap...

2 years ago
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RE: Tomato Energy

I think the physics is your enemy here. Water has an enormous heat capacity compared to more or less anything else. So it needs a lot of energy to he...

2 years ago
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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...

2 years 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...

2 years 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...

2 years 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...

2 years 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...

2 years 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...

2 years 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...

2 years ago
Reply
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?

2 years ago
Page 308 / 464
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