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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Nov 12, 2025
Profile Activity
Topics: 18 / Replies: 3340
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RE: Is My Midea Heat Pump Inherently Defective?

I haven't used named ranges either more than a couple of times previously, but I found following the formulae with eg d23^d22*d2/2 difficult to follow...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 4 port buffer tank connections

You have answered your own question, at least in part In addition the pumps either side often aren't balanced properly so you get mixing, resulting i...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Underfloor heating: Diagrams with COP 'per water flow'

Unless its 'out of range' I dont think it materially affects COP (directly) which is why you wont see it plotted. The essentials of water flow are ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 4 port buffer tank connections

Maybe With 6 fan coils you probably do need a volumiser (2 port buffer) because of low system volume, but fan coils alone aren't sofaik an argument ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 4 port buffer tank connections

Very likely better still if it looks like this:

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Smart TRV experiences (ideally integrating with Midea heat pump)

Thanks. That's what I had personally understood although I hadn't clocked that you call them FBVs (good idea btw!) @madbilly is trying to do someth...

10 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Is My Midea Heat Pump Inherently Defective?

I think the energy balance model of setback I posted a few days ago (attached again) is not a bad approximation and certainly exhibits all of the qual...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

Homely gets good reviews on this forum. The Samsung controller historically is a bit lacking in features (maybe the later ones are better) and homely...

10 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Ideal Logic 10kW Heat Pump Pipes Noisy and Very Expensive to Run

Is your unit the R290 or the R32 model I dont know the specific wiring of the Ideal heat pumps but I think what you say is very probably the case. ...

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How To Balance Radiators & the Role of the Lockshield Valve: A Homeowner's Guide

Here is the corrected url to the other thread/p> Without vastly more information about your system and the measurements that I care to ask (and like...

10 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Is My Midea Heat Pump Inherently Defective?

Not stepping on toes at all. Its an interesting discussion how best to determine heat loss, which is so key to getting a heating system design right....

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
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