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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: 4403
AllTopicsReplies
Reply
RE: Comparing COP (coefficient of performance)

Hi Neil. So correct me if I am wrong. What you are saying, is that you feed lots of excess electricity into the grid from your solar panels durin...

6 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Comparing COP (coefficient of performance)

Hi Neil, I agree totally about having an ASHP in conjunction with solar PV. That is why I plan to install an air to air ASHP (at a fraction of the c...

6 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Comparing COP (coefficient of performance)

Hi Everyone, As it has been correctly pointed out, CoP is an instantaneous measurement of the efficiency of an ASHP (or other source of heat energy)...

6 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Comparing COP (coefficient of performance)

Hi Mars, Our weather forecast is showing 9C at the moment and for much of today, so I would expect it to be somewhat similar in your area. I would...

6 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Sizing of heat pumps

Hi Kev M, Accurately estimating heat loss either by calculation or more practical methods, is an almost impossible task. There are so many variables...

6 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Smart Home Tech

Hi Everyone, As an Instrumentation and Control System Engineer, for over 50 years, this is obviously one of my pet subjects. I have been very plea...

6 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Comparing COP (coefficient of performance)

Hi Mars, Like many other pieces of equipment, the efficiency of ASHP's is dynamic, in that the efficiency varies with operating conditions. A good...

6 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Sizing of heat pumps

Hi Kev M, You are perfectly correct that my simplistic method may not be accurate for all the rooms, though if you were to choose the worst room as ...

6 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Sizing of heat pumps

Hi Everyone, There has been quite a few post today under the heading 'ASHP pricing justification' which I feel would be better placed under this hea...

6 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Insulation

Hi Bob, We did not get a thermal image taken before. I borrowed a thermal imaging camera the other year and carried out a survey and could see no ...

6 years ago
Forum
Well & Truly Off The Grid
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