We're aware that some users are experiencing technical issues which the team are working to resolve. See the Community Noticeboard for more info. Thank you for your patience.
📨 Have you signed up to the Forum's new Email Digest yet? Get a selection of trending threads sent straight to your inbox daily, weekly or monthly!

What do people think of this?

Options
2

Comments

  • Correction a fan will not increase the heat output of a radiator

    Yes it will. Have you never heard of wind-chill? This is the opposite.


    No lol you can't create extra heat you can create a feeling of increased heat directing, as I said the heat into your face etc.
  • Netexporter
    Netexporter Posts: 1,960 Forumite
    1,000 Posts First Anniversary Name Dropper
    Correction a fan will not increase the heat output of a radiator

    Yes it will. Have you never heard of wind-chill? This is the opposite.


    No lol you can't create extra heat you can create a feeling of increased heat directing, as I said the heat into your face etc.
    You are creating heat. You are extracting it faster, resulting in a lower return temperature from the radiator.
  • MultiFuelBurner
    MultiFuelBurner Posts: 2,928 Forumite
    1,000 Posts First Anniversary Photogenic Name Dropper
    edited 2 December 2023 at 7:38PM
    Correction a fan will not increase the heat output of a radiator

    Yes it will. Have you never heard of wind-chill? This is the opposite.


    No lol you can't create extra heat you can create a feeling of increased heat directing, as I said the heat into your face etc.
    You are creating heat. You are extracting it faster, resulting in a lower return temperature from the radiator.
    Omg if you extract heat it has to refill and the excess heat, as explained in my post will be where you have taken it from the radiator and it then replaces that heat burning more energy.

    Therefore using more power.....ok I give up please show me how to make heat out of nothing.in the home.
  • Netexporter
    Netexporter Posts: 1,960 Forumite
    1,000 Posts First Anniversary Name Dropper
    You are transferring more heat from the radiator into the room. Yes, the boiler will have to supply more heat to make up for that. However, as the return water is cooler, it will do that more efficiently. A win-win.
  • You are transferring more heat from the radiator into the room. Yes, the boiler will have to supply more heat to make up for that. However, as the return water is cooler, it will do that more efficiently. A win-win.
    Nah, the fans blow the convected warm air into the room, they don’t blow cooler air across the fins,if  in fact the warmer air hits the trv then the valve will close i.e. boiler thinks you have enough.
    4.8kWp 12x400W Longhi 9.6 kWh battery Giv-hy 5.0 Inverter, WSW facing Essex . Aint no sunshine ☀️ Octopus gas fixed dec 24 @ 5.74 tracker again+ Octopus Intelligent Flux leccy
  • Netexporter
    Netexporter Posts: 1,960 Forumite
    1,000 Posts First Anniversary Name Dropper
    they don’t blow cooler air across the fins

    I didn't say they did, although the air from near the floor will be cooler. A faster air-flow than the natural convection rate will transfer more heat to the room. You could increase the natural convection rate by increasing the flow temperature of the boiler, but that will reduce the efficiency of the boiler.

  • Spoonie_Turtle
    Spoonie_Turtle Posts: 10,315 Forumite
    10,000 Posts Fifth Anniversary Name Dropper
    Still blowing air upwards though,

    The point is that increasing the airflow will increase the output of the radiator. Blowing the air sideways isn't going to make a huge difference as the warmer air will rise, so you won't feel it directly.

    Fair point, I'd missed that.

    I imagined blowing the air sideways before it can go straight up would help people feel a bit more benefit from it before it then rises anyway, but that's just speculation as I don't know enough about this to work out what would actually happen.
  • The laws of thermodynamics (as they currently stand) apply.
  • Netexporter
    Netexporter Posts: 1,960 Forumite
    1,000 Posts First Anniversary Name Dropper
    And your point is?
  • Phones4Chris
    Phones4Chris Posts: 1,250 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Combo Breaker
    You are quite correct @Netexporter. If you increase the airflow then the radiator gives out more heat more quickly (and of course the boiler has to replace it) it's the same as effectively increasing the capacity of the radiator. It doesn't matter whether the increased airflow is by convection or by fans, it's just quicker by fans.
    For the doubters, simply compare the BTU output of a type 21 and type 22 radiator where convection just removes more heat from the radiator due to increased surface area thus cooling the radiator more quickly which is exactly what adding a fan is doing - removing the heat more quickly.
    https://www.toolstation.com/kudox-premium-type-21-steel-panel-radiator/p58138  2727BTU
    https://www.toolstation.com/kudox-premium-type-22-steel-panel-radiator/p66309  3604BTU
    Other brands are availble of course!
Meet your Ambassadors

🚀 Getting Started

Hi new member!

Our Getting Started Guide will help you get the most out of the Forum

Categories

  • All Categories
  • 351K Banking & Borrowing
  • 253.1K Reduce Debt & Boost Income
  • 453.6K Spending & Discounts
  • 244K Work, Benefits & Business
  • 598.9K Mortgages, Homes & Bills
  • 176.9K Life & Family
  • 257.3K Travel & Transport
  • 1.5M Hobbies & Leisure
  • 16.1K Discuss & Feedback
  • 37.6K Read-Only Boards

Is this how you want to be seen?

We see you are using a default avatar. It takes only a few seconds to pick a picture.