Green Building Forum - Simple Heat Loss Calculator Tue, 19 Dec 2023 04:58:10 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 Simple Heat Loss Calculator http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=177515#Comment_177515 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=177515#Comment_177515 Sat, 08 Jun 2013 09:57:25 +0100 PeterW
Following a couple of discussions, here is a simple Excel based heat loss calculator and domestic heating sizing method.

Based on the Energy Saving Trust paper fact sheet and calculator, you will need to download both as the instructions are in the PDF

http://www.energysavingtrust.org.uk/Publications2/Housing-professionals/Heating-systems/Domestic-heating-sizing-method-2010-edition

https://docs.google.com/file/d/0B4rLWre5MvQQWm5CMVJ2VTdUcUE/edit?usp=sharing

If you do spot any errors in it please let me know and I will update it

Thanks

Peter:bigsmile:]]> Simple Heat Loss Calculator http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=177651#Comment_177651 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=177651#Comment_177651 Mon, 10 Jun 2013 22:00:33 +0100 jamesingram I believe they had a big budget cut when the CONLIB came to power.]]> Simple Heat Loss Calculator http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217196#Comment_217196 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217196#Comment_217196 Thu, 15 Jan 2015 11:20:49 +0000 Triassic
Where can I find the appropriate heat loss spread sheet?]]> Simple Heat Loss Calculator http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217257#Comment_217257 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217257#Comment_217257 Thu, 15 Jan 2015 19:49:35 +0000 djh Posted By: TriassicI'm looking to do the heat loss calculations for my new build.
Which 'the' are you talking about?

Meeting statutory obligations?

Getting an accurate idea of heat load / heat demand?

Something else?]]> Simple Heat Loss Calculator http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217262#Comment_217262 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217262#Comment_217262 Thu, 15 Jan 2015 20:11:56 +0000 Triassic Posted By: djh
Getting an accurate idea of heat load / heat demand? So I can size the heating system.]]> Simple Heat Loss Calculator http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217268#Comment_217268 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217268#Comment_217268 Thu, 15 Jan 2015 20:36:32 +0000 djh So I can size the heating system.
There's a lot of published reports rubbishing SAP, so I'd either go for a dynamic model such as HOT2000 or if your build is within its parameters, trust PHPP.

For heating system sizing, it's the heat load that matters. Plus you need substantial overkill to heat the place from cold after a long holiday or power cut etc. You also need a backup plan for power cuts. But electric fan heaters are cheap, as are camping gas stoves etc.]]> Simple Heat Loss Calculator http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217272#Comment_217272 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217272#Comment_217272 Thu, 15 Jan 2015 21:22:03 +0000 Triassic
Posted By: djhBut electric fan heaters are cheap, as are camping gas stoves etc.
We currently use an electric fan heater and it's great for heating from cold.]]> Simple Heat Loss Calculator http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217285#Comment_217285 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217285#Comment_217285 Thu, 15 Jan 2015 22:40:28 +0000 andyman99 Simple Heat Loss Calculator http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217316#Comment_217316 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217316#Comment_217316 Fri, 16 Jan 2015 15:00:45 +0000 Triassic
I've just started loading data into Hot2000 and I must admit I had a few head scratching moments and more than a few empty cells, but slowly but surely I'll get there.

I was wondering if there is a user guide as well as YouTube? I've also found some of the insulation thicknesses a bit thin and no obvious user override.]]> Simple Heat Loss Calculator http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217321#Comment_217321 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=217321#Comment_217321 Fri, 16 Jan 2015 15:18:00 +0000 Paul in Montreal Posted By: TriassicI was wondering if there is a user guide as well as YouTube? I've also found some of the insulation thicknesses a bit thin and no obvious user override.

You can create your own "code" elements with whatever thicknesses you want - the built-in ones are a representative sample, but you can define what you want from the individual material elements available. Being accurate with window sizes, overhangs and location also helps correctly calculate the solar gains. The good thing about hot2000 is that its models have been verified against real test buildings (especially the model it uses for basements and the heatloss into the ground). If you have actual air tightness measurement figures, you can use these, too, to determine the air leakage losses. There are weather files available for the UK - if you can't find them, whisper me your email address and I'll send you the zip file I have.

Paul in Montreal.]]> Simple Heat Loss Calculator http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=264291#Comment_264291 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10758&Focus=264291#Comment_264291 Mon, 01 Jan 2018 19:12:02 +0000 Jinni King
Also, i stumbled upon the 'missing' Energy Saving Trust paper fact sheet pdf. I've saved it to my google drive...here's a link: https://drive.google.com/open?id=17IKCsiba61Sdw0fSwpZGAe2lMY41qgYx]]>