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Old_Scientist
@old_scientist
Member
Honorable Member
Joined: Jun 16, 2024
Last seen: Jun 1, 2026
Topics: 6 / Replies: 404
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RE: Other than heat loss, radiator sizing, ASHP sizing, what else goes into a design and how important is it?

Indeed. My point was that if you design for a flow temp of 50C at -3C based on a 10kW heat loss, and in reality the heat loss is more like 7kW then yo...

3 months ago
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RE: Other than heat loss, radiator sizing, ASHP sizing, what else goes into a design and how important is it?

@petch just wondering how your averaged heat loss survey data compares to actual usage data. Is your existing boiler gas, and if so do you have access...

3 months ago
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RE: Other than heat loss, radiator sizing, ASHP sizing, what else goes into a design and how important is it?

@petch Yes, if the flow and return pipes immediately split into 22mm runs for upstairs and downstairs, then each branch should theoretically be able t...

3 months ago
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RE: Other than heat loss, radiator sizing, ASHP sizing, what else goes into a design and how important is it?

All great advice 👍 Going back to radiators and pipework sizing, once you have a heat loss calculation, broken down room by room, you can st...

3 months ago
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RE: Heat Pump vs New Gas Boiler for Inherited House - Worth the Extra Cost?

Hi @fretless6 Mike, I have experience with Taggas (Retford), as they installed my system (a 12kW Samsung unit) on an ECO4 grant. The design proces...

3 months ago
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RE: Axle - £1 per kWh!

@toodles I watched with interest too. My first thoughts was that it would be a good addition to run alongside/in addition to Cosy in winter (I still...

3 months ago
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RE: Domestic wind turbines

Agreed. When I first looked into domestic wind, my initial impressions were there are easier ways of generating 2.5kW of intermittent renewable power ...

3 months ago
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RE: Domestic wind turbines

My limited understanding is that small scale domestic wind is simply not practical. The size of the turbine (blades) and mounting height above roof/tr...

3 months ago
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RE: Knock on effective of balancing radiators

We were extremely lucky with our system, and I've never really needed to do any balancing. With all LSVs fully open, all radiators get warm, even thos...

3 months ago
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RE: Our Experience installing a heat pump into a Grade 2 Listed stone house

@jamespa This does make me wonder though, how much more energy does the typical household use to heat a house constantly at 21C (heat pump) versus the...

3 months ago
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RE: Knock on effective of balancing radiators

Flow is what transfers heat, so when you say take heat from upstairs to downstairs, what you mean is to increase the flow downstairs by limiting the f...

3 months ago
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RE: Electricity price predictions

Absolutely, this is typical usage for Octopus Cosy users, where the daytime cheap rate slot is 1-4pm. I know from my own experience and usage data, th...

3 months ago
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