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Derek M
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Derek M
@derek-m
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Illustrious Member
Joined: Mar 4, 2021
Last seen: Sep 19, 2024
Profile Activity
Topics: 7 / Replies: 4405
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Reply
RE: My ASHP is running out of hot water

@curlykatie Do you have any form of pressure reducing valve on the cold water supply to your hot water cylinder? If you have mixer taps on your ba...

3 years ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: A Beginner's Guide to ASHP Monitoring

Is it a GSHP by any chance?

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Had to replace my GSHP due to new regulations with an ASHP

Has your ASHP been correctly commissioned and optimised, since 5kW seems rather excessive. What are the operating parameters and operating mode? Do yo...

3 years ago
Forum
Grounds Source Heat Pump (GSHPs)
Reply
RE: My ASHP is running out of hot water

I often wonder where people are being trained these days, assuming that they are being trained at all. I can't say for certain, since I don't know e...

3 years ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: Ecodan. How to run this efficiently with zero understanding.

Whether you fully heat unused rooms is a personal choice. ASHP's are more efficient when operating at the lowest LWT, but to get the maximum amount ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My ASHP is running out of hot water

@curlykatie Hi Curly, Just out of interest, how is your system performing now?

3 years ago
Forum
Domestic Hot Water & Cylinders
Reply
RE: A Beginner's Guide to ASHP Monitoring

@robl Other than what you refer to as DeltaT, is more likely LWT, this is an excellent set of results, and proves what can be achieved with a good l...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Had to replace my GSHP due to new regulations with an ASHP

Just a further example of the 'tail wagging the dog', when it could have been quite feasible to supplement your heat demand with a simple fan heater ...

3 years ago
Forum
Grounds Source Heat Pump (GSHPs)
Reply
RE: The dreaded fast "cycling"

The text is much too small to read, but I assume that when you state that the 'peak heat loss 13kW', this mean with indoor temperatures of 21C and an ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Connecting to Midea MSmartHome using a PC

@cathoderay I am not familiar with Python, but I do have experience with data storage and transmission. To store a number, be it an integer or float...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Had to replace my GSHP due to new regulations with an ASHP

ASHP's are not as efficient as GSHP's, because their primary energy supply, from the air rather than the ground, keeps changing, and can go well below...

3 years ago
Forum
Grounds Source Heat Pump (GSHPs)
Reply
RE: The dreaded fast "cycling"

@ecodannewcastle Try changing the warm end of the WC curve to LWT of 25C at outside temperature of 20C. What size is your Ecodan? What is the heat...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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