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BobTSkutter
@bobtskutter
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Estimable Member
Joined: Jan 11, 2025
Last seen: Apr 7, 2025
Profile Activity
Topics: 1 / Replies: 93
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@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 ...

4 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?

Hello, I confused about why this is a problem for you. Is your house not getting warm enough? Thanks Bob

4 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: Volumisers in Heat Pump Systems: Does Placement Matter?

@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...

4 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Setback savings - fact or fiction?

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...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Setback savings - fact or fiction?

@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 ...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Setback savings - fact or fiction?

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...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Setback savings - fact or fiction?

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...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

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...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

@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...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Setback savings - fact or fiction?

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...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Setback savings - fact or fiction?

@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...

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP for small garage and workshop

@transparent, thank you. That makes sense. Much appreciated. Regards Bob

5 months ago
Forum
Air Source Heat Pumps (ASHPs)
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