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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: To zone or not to zone?

Here are some thoughts for consideration, they may depend upon the location of your heat pump and whether it also gets some solar gain. You should i...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump efficiency v Outside Air Temperature

This is precisely why it is not possible to predict Power Input or Power Output, with any degree of accuracy by merely using outside air temperature v...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Tell us about your Solar (PV) setup

Have you considered Octopus Tracker which today is 14.83p/kWh in the Yorkshire area. That is all day.

3 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: To zone or not 2 zone!

The idea that James proposed of using TRV's in the solar gain rooms should work, and is probably the easiest and simplest solution. An alternative w...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New ASHP system - choices

The major drawback with that philosophy, is there will then be the need for more electrical energy generation and transmission, which in turn will inc...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pump efficiency v Outside Air Temperature

You are perfectly correct, there is a non-zero element which needs to be considered. It is due the the 'human infestation' along with their toys and g...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Running my heat pump for half the cost of a gas boiler

Good piece of work. As you discovered chasing cheaper tariffs does not always align with the weather conditions. Some of my previous ideas have bee...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: No two meters are equal!

What about the man who doesn't wear a watch?

3 years ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
Reply
RE: No two meters are equal!

I have worked on complex instrumentation systems for over 50 years, and the worst thing that any system designer can do is provide two individual moni...

3 years ago
Forum
Electricity, Tariffs, Monitoring, Electrics & Providers
Reply
RE: New ASHP system - choices

I don't disagree with you that 12kW would appear to be too large, I would usually suggest that a heat pumps capacity should to be 1.25 to 1.5 times th...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New ASHP system - choices

Ian, I would suggest caution when encouraging people to go for smaller capacity heat pumps, since I feel most would be much happier having a heat pu...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How are Ecodan CoP quotes from MelCloud setups?

I fully appreciate that an external power meter will probably be more accurate than any internal equipment. The point that I am making is that even ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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