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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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RE: Observation about radiators and weather compensation

@cathoderay Are you ready for the maths? The Specific Heat Capacity of water is approximately 4200 Joules (J), which means that it takes approxima...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Observation about radiators and weather compensation

@cathoderay I would suggest that you have a close look around your system for any form of pressure relief valve, since as far as I am aware one shou...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How will the Money off Energy Scheme know how much energy i am not using during the peak time?

@ronin92 I suppose those with a heat pump can preheat their home prior to the 2 hour period and then drop the setpoint so that their heat pump does ...

3 years ago
Forum
Electricity, Tariffs, Monitoring & Providers
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RE: Observation about radiators and weather compensation

@cathoderay I will compile the information and demonstrate how to calculate the approximate flow rate in a later post. Do all your radiators have ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: PV sizing and approvals

@transparent Under the original FIT scheme one gets paid for ALL units generated, not just exported, and a further much smaller payment for half the...

3 years ago
Forum
Solar Photovoltaic (PV)
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RE: Observation about radiators and weather compensation

@cathoderay Let me see if I can explain PHE's in terms that most can understand. Most people understand radiators, warm water flows through the in...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: PV sizing and approvals

@transparent To receive FIT payments one has to provide readings of generation to the designated electricity supplier (which may not be the one from...

3 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: PV sizing and approvals

@transparent So the batteries may not survive afterall? 🙄

3 years ago
Forum
Solar Photovoltaic (PV)
Reply
RE: Observation about radiators and weather compensation

Hi Cathoderay, Correct me if I am wrong, but did we not discuss the problems associated with your heat exchanger last Winter? I suspect that Kev i...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Arotherm Plus not kicking in for DHW

@stepht83 Try switching off the power to your heat pump, the controller may be powered from the unit. If the controller is still powered then look f...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Arotherm Plus not kicking in for DHW

Hi, Welcome to the forum. I would initially suggest powering down your system, wait 5 minutes then power it back up. Then try initiating DHW. If...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Renewable Heating YouTube channel

@jeff Thanks for the data. One of the acute problems with the UK electricity system is that it is being run for profit by a number of boards of di...

3 years ago
Forum
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