Last seen: Apr 7, 2025
@gary some the trends you've posted show the LWT is at the setpoint. They also show the setpoint is changing and they show the compressor frequency ...
Hello, I confused about why this is a problem for you. Is your house not getting warm enough? Thanks Bob
@gary I'll try and help, but at the moment I'm not really sure what the problem is. <rant> On a more general note, I read threads like this...
The lower the DT the higher the flow rate. The lower the DT on the heating water side, the hotter the average temperature of the heat emitter, so th...
@jamespa I don't know where this comes from. I've heard a variety of numbers mentioned for heating design. 10C, 5C, 7C. I think it comes from ...
Hello @jamespa I've attached a spreadsheet which attempts to show how a heat pump compressor system works. The gas enters the compressor as a s...
OK, so I'm just thinking out loud here: You loose energy through the walls, roof, and draughts - anywhere else? The 10% lost energy could be going...
Hello, sorry I've been quiet for a while. In CathodeRays case the plate heat exchanger was acting as restriction in the flow of energy from the heat...
@cathoderay at constant room temperature, energy in = energy out Q = UA.DT tells you how much energy flows through an object, in this case a wall, w...
Slicing and dicing data can sometimes be fun, but it's often frustrating. I often start by asking "what do I think i'm looking for". So..."does se...
@cathoderay what would the plot look like if you used (Inside temp - Outside temp) as the x-axis? If Q = UA.DT the gradient of the trend would be UA...
@transparent, thank you. That makes sense. Much appreciated. Regards Bob
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Fair enough. With R290 heat pumps, which seems to be...
By JamesPa , 5 hours ago
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RE: Heat pump installation and BUS Grant timings
EPC no longer necessary Here is the link to the part...
By JamesPa , 7 hours ago
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RE: Getting the best out of a heat pump - is Homely a possible answer?
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By Toodles , 8 hours ago
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RE: Home energy storage & battery register
@jamespa To a certain extent, by exporting to the grid ...
By Toodles , 10 hours ago
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RE: Jokes and fun posts about heat pumps and renewables
@transparent ‘Protein’s extra Luv’.
By Toodles , 17 hours ago
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RE: Forum updates, announcements & issues
@editor Fairy Nuff Mars, I doubt that my ramblings woul...
By Toodles , 1 day ago
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RE: Antifreeze top up for my heat pump - is this a rip off?
@johnmo You are correct, standard Ethylene glycol used ...
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RE: Confusion about heat pump sizing
We’ve published a deep dive into heat pump sizing, and ...
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We’ve published a deep dive into heat pump sizing, and ...
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RE: Kensa GSHP finally installed - now to start the optimisation process
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RE: Potentially more choice including air to air heat pump grants
Hi all, I agree, the consultation documents are alway...
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RE: Commencing on an ASHP Installation Process
I think those are pretty much the standard figures that...
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RE: Load Compensation and Weather Compensation
I think that maybe what the adia thermal system does, b...
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RE: Enabling WiFi: Samsung ASHP on Smart Things App
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RE: Nibe F2040 periodic warm water increase fails
@tribol here's an official reply from NIBE on your case...
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RE: Vaillant & OVO partner up to offer Heat Pump Plus
@ecodan-efficiency On the other hand, the fact that the...
By Richard24738 , 4 days ago
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RE: How accurate was your heat loss survey?
@scalextrix for our house 1950s detached the air leakag...
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RE: Air Changes per Hour - ACH and the MCS requirement
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