Search the forum,

Discuss BTU's at delta T65 and T50 in the Plumbing Jobs | The Job-board area at PlumbersForums.net

Messages
1
Hi Guys,
Need some help. I have calculated online the BTUs for the rads (calculator used T65) then when purchasing I was looking at the T65 radiator calculations.....
But I have since noticed, Europe uses T50 as standard. What calculation would I use to convert the T65 BTU needed to the new T50 (I presume I would need to increase the number).

Or would it stay the same and I would just need to choose rad BTU's at T50?
 
Flow plus return temp

Divide by two

Minus your room temp

Eg

65+50

115/2

57.5

Mins let’s say 18

Gives you a delta t of 39.5

Delta t of 50 you would need your flow and return around 75-65

Which if you have a condensing boiler is bad

TBH I would work off a delta t of 40
 
Hi Guys,
Need some help. I have calculated online the BTUs for the rads (calculator used T65) then when purchasing I was looking at the T65 radiator calculations...
But I have since noticed, Europe uses T50 as standard. What calculation would I use to convert the T65 BTU needed to the new T50 (I presume I would need to increase the number).

Or would it stay the same and I would just need to choose rad BTU's at T50?
Output of a 50 deg rad is (50/60)^1.3. I , can't work this out in my present location but very easily done on a spreadsheet . You can also and easier look it up in a radiator temperature correction table.
 
Hi Guys,
Need some help. I have calculated online the BTUs for the rads (calculator used T65) then when purchasing I was looking at the T65 radiator calculations...
But I have since noticed, Europe uses T50 as standard. What calculation would I use to convert the T65 BTU needed to the new T50 (I presume I would need to increase the number).

Or would it stay the same and I would just need to choose rad BTU's at T50?

Slightly misread your post so if the calculation was based @ T65 then the correction factor to run @T50 is 1.41, (65/50)^1.3.
IF it had been based @T60 then the correction factor to run @T50 is 1.27, (60/50)^1.3.
 

Reply to BTU's at delta T65 and T50 in the Plumbing Jobs | The Job-board area at PlumbersForums.net

Creating content since 2001. Untold Media.
Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock