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BobTSkutter
@bobtskutter
Member
Estimable Member
Joined: Jan 11, 2025
Last seen: Jan 6, 2026
Profile Activity
Topics: 1 / Replies: 93
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Reply
RE: 4 port buffer tank connections

Why do buffers get such a bad press? They aren't evil, they're just not properly designed. I buffer should hold a volume of heat and absorb swings ...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

@JamesPa OK, I'll give it a go (no promises), point me in the direction of what you're trying to solve. Edit: Just had a thought, one technique I u...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

@cathoderay Ah OK, sounds like an interesting way to observe heat loss. I didn't mean to step on people's toes. I'm looking forward to seeing more d...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

Heat transfer through objects can be determined by the equation: Q = U.A.DT Q = Energy transfered, kJ U = Heat Transfer Coefficient, kJ/m2/C A...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Double heat pump for DHW?

A slight distraction: But just to show what high temperature heat pumps can really do! Bob

12 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Double heat pump for DHW?

Ah....yes, sorry. The spreadsheet is actually a generic calculation. My comment "the ASHP power at 12kW" was me trying to say "I've limited the inpu...

12 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Is My Midea Heat Pump Inherently Defective?

I find myself hoping for cold weather and more data 😉 Bob

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

Yeh...those are them 🙂 Bob

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Double heat pump for DHW?

@transparent Yes, all those reasons crossed my mind when I was designing the original system. To answer your original question, please see the attac...

12 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Is My Midea Heat Pump Inherently Defective?

@cathoderay It's great your house is now getting too warm, we're making progress. It looks to me as though the average ASHP power is higher with the...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Double heat pump for DHW?

Sure, here's bunch of pictures. The plate exchanger is shoe horned into the back of the airing cupboard, it's not easy to get photos of. ...

12 months ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Double heat pump for DHW?

@Transparent it's an interesting proposal. I don't think the energy balance quite works. The radiators and hot water tap remove energy from the sys...

12 months ago
Forum
Domestic Hot Water & Cylinders
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