Tue, 19 Dec 2023 05:20:25 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11806 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11806 Wed, 26 Feb 2014 09:57:36 +0000 chippyclaus By the way this was mentioned during a CPD session/talk by Worcester Renewables.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11792 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11792 Mon, 24 Feb 2014 09:52:35 +0000 Triassic
So being a complete novice at air tightness and having Googles the subject and been baffled by the huge amount of information, I was wondering if someone here could synthesise the requirements. We realise there will be a spread, starting with minimum building regs at one end and passive house at the other, but where is that happy mid point - you know that point just before the requirement for MVHR kicks in?

Thanks in advance.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11734 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11734 Tue, 11 Feb 2014 18:35:34 +0000 Triassic
Can anyone point me in the right direction?

Oh, it looks like we are going down the timber frame route, if that makes a difference.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11678 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11678 Wed, 29 Jan 2014 13:28:05 +0000 jamesingram Download the ICE embodied energy and embodied carbon footprint database free
http://www.circularecology.com/ice-database.html#.UukBEJpFDGg]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11683 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11683 Thu, 30 Jan 2014 15:08:20 +0000 thornewyness http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11592 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11592 Wed, 08 Jan 2014 15:50:16 +0000 tony
To me it is something that can automatically adjust my power usage, switch on appliances when the supply company wishes.

It is not a remotely readable meter or one that only gives information.

What do you think a smart meter is?]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9406 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9406 Wed, 01 Aug 2012 19:00:28 +0100 Triassic
The latest offer had a list of points and this set me to wondering. What is it all about and do I need to know more, ideally without wasteing my time?

So anyone here got any answers ---

How does the Green Deal work?
How is the Green Deal funded?
What kinds of customers will the Green Deal benefit the most?
How are Green Deal loans repaid and how long is the payback period?
What is the "Golden Rule?"
What are the roles of the Green Deal Assessors, Providers and Installers?
What do you need to do to prepare your business for the Green Deal?
How will participants in the scheme earn their revenue?
What are the rules about relationships between Assessors and Providers?


By the way I started the tread here because I keep being told energy assessment is key to the deal?]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11607 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11607 Sun, 12 Jan 2014 22:41:55 +0000 tony
If you are squeamish about horror stories dont watch any of this, I skimmed it a bit but have written GBM article along similar lines.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11517 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11517 Wed, 11 Dec 2013 17:19:21 +0000 tony http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11291 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=11291 Wed, 23 Oct 2013 09:00:26 +0100 Triassic
In his talk ‘Green Deal or No Deal’ at the Retrofit East conference in Cambridge he will say that the Green Deal is a busted flush....

To meet the Government’s carbon reduction targets, the UK needs to retrofit 700,000 properties per year. However, despite being allocated a fund of £244 million, only 12 properties have so far had any work completed under the Green Deal finance scheme....

“The only way to achieve the scale of change necessary is through legislation and compulsory standards. The Government should again look at using Energy Performance Certificates as a basis for creating minimum standards for all homes that are sold or renovated.”

http://www.businessweekly.co.uk/cleantech/16057-scrap-green-deal-says-climate-change-expert]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8450 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8450 Thu, 19 Jan 2012 20:59:58 +0000 diydoctor I am aware of the effects that shading,cloud cover and angle of panels can make but even allowing for these generation has always been low with an ideal summer weather daily total generation of 5.8Kwh]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=1427 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=1427 Sun, 16 Mar 2008 21:48:03 +0000 James Norton
1. Free / cheap (for me)

2. Paid for (for work)

J]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10099 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10099 Fri, 08 Feb 2013 15:29:44 +0000 1975Noodles
Has anyone got a link to a website or any info on the proposed changes to Part L1A and L1B. I have looked everywhere (Planning Portal and DCLG) and can only find info on the consultation, etc. I could do with a brief overview as I've been asked to do a powerpoint presentation on the changes!! I've only got a 20 minute window so as concise an overview as possible would be great. Any info/comments would be gratefully received.

Thanks]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10726 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10726 Wed, 29 May 2013 16:45:58 +0100 Triassic technologies. It is adjusted for floor area so that it is essentially independent of dwelling size for a given built form. The SAP rating is expressed on a scale of 1 to 100 - the higher the number, the lower the running costs. This release covers quarterly data for the regions of England and Wales for January - March 2013.

The key points From January to the end of March 2013:
• The average energy efficiency (SAP rating) of new homes was 79.2 in England and 79.2 in Wales for the quarter January - March 2013. This is a decrease of 0.2 points for England and a decrease of 1.1 points for Wales on the same quarter in 2012.

https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/202901/130521_CSH_Statistics_-_Q1_-_to_end_March_2013.pdf

So is new build quality going down?]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10538 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10538 Thu, 18 Apr 2013 14:18:29 +0100 Paul in Montreal
Now I'm leading a local "EcoAction" project for our community and have teamed up with an energy auditor. He has eight sets of blower door test equipment and said he'd train me and the students working on the project how to perform the tests. So we're going to re-test my house next week. I'm guessing it will come in at about 4ACH@50Pa now (having had old leaky skylights replaced). We'll then enter the new data in hot2000 and see how it compares with my measured energy consumption over the last year or so (though I have weekly meter readings going back to August 2005).

Part of the EcoAction project is to measure the baseline consumption of typical properties in the community and then re-assess after any improvements are done. Air leakage reduction is one of the best measures in terms of ROI that can be performed, but measurements have to be taken. So we're going to be offering free blower door tests to people who want to participate. Should be interesting!

Paul in Montreal.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10620 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10620 Thu, 02 May 2013 12:41:51 +0100 scrimper
Where do I go (and how much should I pay?) to get someone independent to evaluate our proposed house renovation, and to calculate as accurately as possible the KWH requirements for the year and for each room? We are (hopefully) going to end up with a 4,500sq. foot house, with 8 acres of mature woodland ...

Have got my head in a spin with all these wonderful options open to us ... before realizing that I need to nail down precisely what we need before I can even begin to choose between solar, wood, air source blah-di-blah ...

Hope someone out there can help! Thanks ...]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10232 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10232 Sun, 03 Mar 2013 12:15:45 +0000 Pile-o-Stone
Since we moved into our house we've been trying to get the utility bills down. According to our combined gas and electricity bill we use the following:

Average Electricity daily use

21.9 kWh currently
23.6 kWh last year

Average Gas daily use

133 kWh currently
139 kWh last year

Annual Usage:

6944 kWh electricity
29207 kWh gas.

We have 2 adults and 2 teens living in the main house and 2 pensioners living in an attached 1 bed apartment. We therefore have 2x fridges, 2x freezers, 2x washing machines, etc.

I can't find any figures online that provide decent average UK energay useage in order to see if we are using excessive amounts of electricity/gas (I know we're not an 'average' family, but it would give us a ball-park to work from).

I also feel that I have done as much as I can to lower our electricity bills (gas bill reduction is on-going with insulation, better glazing, etc.) as we have A+++ rated white goods, LED lighting almost everywhere, low energy consumer goods. I'm therefore struggling to think of other ways we could reduce our electricity consumption, except to get rid of the clothes dryer and get one powered by gas or that uses heat pump technology.

Does anyone have any ideas on our consumption figures and/or how to reduce it?

Thanks. :)]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10129 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10129 Wed, 13 Feb 2013 17:24:17 +0000 Sally_Cooke
Has anyone seen anything similar? Any ideas what causes it? (as you can guess, I'm no physicist :)

Thanks,
Sally]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10063 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10063 Wed, 30 Jan 2013 13:42:13 +0000 tony

NO! NO! NO! you missed the point!! You want to know the cheapest and most economic way to get what ever is under discussion done.


I cannot see how anything that carries a 7% ( or to 9.3% yesterdays Telegraph) interest rate can work out as the most economic or the cheapest way to go]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10047 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=10047 Sun, 27 Jan 2013 10:15:59 +0000 RobinB
If it was dropped to say, 3% would it work or does it have other fundamental shortcomings?]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=1542 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=1542 Sun, 06 Apr 2008 09:03:11 +0100 tony
Does it stay on your roof longer than your neighbours?

The greener you are the longer it will remain.

Patches, bands and lines will show where heat is escaping from within.

Have you got a loft conversion? Look see how the snow melts, where it disappears first check out the insulation.

If you have multi layer thin foil insulation I would like to hear from you too.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9550 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9550 Mon, 10 Sep 2012 08:37:18 +0100 tony
Why dont all building inspectors use thermal imaging cameras?

From inside with heating on it would be very valuable (generally horrifying) to see the real insulation picture.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9909 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9909 Thu, 13 Dec 2012 11:45:53 +0000 Energy Saver
My question: Is there a massive difference between the two courses? If I trained on a DEA course could I produce EPC's for new builds and visa versa?

Thanks in advance]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9893 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9893 Sat, 08 Dec 2012 21:19:57 +0000 tony
http://www.professionalequipment.com/content/how-to-determine-r-value.asp

Can we make it work for Celsius and output U-values?

Probably simple maths not sure.

I would be extremely interested in any results for "blobbed and dobbed" walls too]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9863 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9863 Tue, 27 Nov 2012 11:25:44 +0000 RobinB http://www.youtube.com/watch?v=_xro2FPaRf8]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9836 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9836 Wed, 21 Nov 2012 13:48:27 +0000 James Norton
Any idea how (/if) I take account of this in SAP, for some back of beermat Code calculations...?

J]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9830 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9830 Tue, 20 Nov 2012 09:17:54 +0000 tony
Both these could have a significant effect on the amount of energy and hence carbon used]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9753 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9753 Mon, 29 Oct 2012 07:43:23 +0000 Seret

Supplier	Nuclear	Gas	Coal	Renew.	Other	CO2 Intensity (kg/kWh)	CO2 emissions (kg/year)	Cost on bill (annual)	External cost (annual)	Cost including external (annual)
Npower	2%	55%	29%	12%	2%	0.474	1565	£516.71	£63.28	£ 579.99
Brit Gas	27%	50%	14%	8%	2%	0.316	1042	£448.08	£38.78	£ 486.86
EDF / Sainsbuys	69%	0%	28%	3%	0%	0.253	834	£488.27	£60.60	£ 548.87
Eon	6%	49%	30%	11%	4%	0.476	1570	£499.56	£69.23	£ 568.79
Southern / Scottish Hydro / Swalec / Atlantic / M&S /Ebico	1%	49%	35%	14%	1%	0.501	1653	£485.42	£71.09	£ 556.51
Scottish Power	0%	40%	47%	14%	0%	0.568	1874	£483.23	£88.80	£ 572.03
Ecotricity*	2%	20%	12%	64%	2%	0.191	630	£488.31	£28.82	£ 517.13
Good Energy	0%	0%	0%	100%	0%	0	0	£485.20	£1.82	£ 487.02
LoCO2	0%	55%	0%	45%	0%	0.198	653	£ 452.31	£7.90	£ 460.21
Utility Warehouse	2%	55%	29%	12%	2%	0.474	1565	£ 436.02	£63.28	£ 499.30
First Utility	6%	52%	32%	5%	4%	0.500	1651	£ 564.50	£73.76	£ 638.26
Ovo*	5%	39%	24%	29%	3%	0.377	1244	£ 403.79	£56.01	£ 459.80
Green Energy UK*	0%	64%	0%	36%	0%	0.230	760	£ 460.44	£8.89	£ 469.33

Notes:
*These suppliers also offer a dark green tariff that would have the same impact as the Good Energy one.
Prices were the latest standard online dual fuel tariff including imminent price rises where applicable, but not including special offers. For simplicity some resellers piggybacking on big 6 companies like SSE have been lumped together even if their prices differ. It's the relative cleanliness we're interested here.
CO₂ intensity is based on (kg kWh^-1: Coal=0.91, Gas=0.36, Other=0.61. Overall CO₂ figure is base don UK annual average of 3300kWh.
External costs are the total impact of GWP, damage to forestry, buildings, health, waste handling etc expressed as a figure in p kWh^-1 (Ref:
Pearce, D.W., Bann, C. and Georgiou, S. (1992) The Social Costs of Fuel Cycles, Report to
the UK Department of Energy,). Figures used were: Nuclear=0.48, Gas=0.39, Coal=5.4, Renewable=0.055, Other = 6.05). Other estimates of external cost are available, but all follow the same pattern of low costs for renewables, medium for gas and nuke, and high for coal and oil, so the effect is the same.


Some of my thoughts:
Even within the Big 6 energy companies (not known for their greenness) there’s a wide variation in the quality of the supply. When you look at just CO₂, EDF and British Gas are surprisingly good, getting almost as low as some of the smaller specialist green suppliers. However, EDF only gets so low because of all their nuclear plants, and this shows in the overall impact where they fall back into the pack of dirty offenders. In the long run, the green suppliers like Good Energy, LoCO₂, Green Energy UK and Ecotricity all come out well ahead, although British Gas is actually not far off them (and is cheap!).

Npower is the worst of the big six, being both dirty and expensive. But if you want the absolute worst deal in Britain you’ll be heading off to First Utility.

Scotland is a country keen to promote it’s renewable resources but unfortunately the Scottish companies seem to be topping up their decent renewable percentages with a lot of coal, so end up being some of the dirtiest. Oops.

Ovo are the cheapest overall, but LoCO₂ only cost £1 more a year and emit about half as much CO₂. If you go with Ovo, use their proper green tariff, as their standard one is pretty dirty.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9682 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9682 Thu, 11 Oct 2012 19:34:00 +0100 rhamdu
I asked whether any of the software packages calculate changes in entropy, the related 'free energy' variables, or other indicators of a building's thermodynamic efficiency. It would be good to know how close our buildings are, to the limits set by physics.

Fostertom - who suggested creating this new thread - restated the issue in terms of high-grade vs low-grade energy. Useful concepts, I think.

Barney said that in the chemical industry, thermodynamically wasteful processes are known as pinch points, and chemical engineers have software for analysing them.

Djh pointed out that the term 'exergy' is widely used as a term for available or usable energy, though (thanks, Wikipedia) I understand that different people use the term with different meanings. However, that doesn't stop 'exergy' being a useful button for making governments cough up money.

So here we are on planet Earth, astride a mighty energy-flow, from the sun's surface at 6000K to the depths of space at 3K. We can use it efficiently or we can waste it. The question I would like to ask is: How can we exploit ideas of thermodynamic efficiency, entropy, free energy, exergy - whatever - in the design, construction and use of buildings?]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9728 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9728 Sun, 21 Oct 2012 13:34:06 +0100 rhamdu http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9710 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9710 Wed, 17 Oct 2012 15:41:54 +0100 tony
I would like to the emphasis on reducing demand rather than relying on the ideas of decentralisation as a be all and end all.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9713 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9713 Thu, 18 Oct 2012 09:38:28 +0100 tony
I think that by now we ought to know how much energy we are using and a national energy use survey would be a an essential part of any scheme to monitor reduction.

I see we have a lot of discussion about members energy use monitoring but we are the good guys what about the country as a whole

I could see an that it would be useful if not essential for everyone to know what their energy use is in say kWh/m2/y

From there we could road map our way into the future with targets based on existing energy use and necessary savings.

Even a largish random sample would be helpful but I reckon that everyone should know how much they are using and be able to compare with others.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9628 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9628 Thu, 27 Sep 2012 17:21:28 +0100 Mike George
I'm looking for a building to use for assessment as part of an Undergraduate Module at the University of Glamorgan. The building will be dynamically modelled using TAS

The exact details of what is to be done and why are yet to be decided though at the very least the willing contributor could expect to get predicted energy consumption for various design options and strategies. In the past the students have been asked to dynamically model a [new] minimum compliance building as a base case, and then to make changes to get to passive house levels of design. I'm thinking of changing it this year to examining and upgrading an older existing building, maybe to passive house levels or perhaps in the context of the Green Deal

If there is anyone interested it doesn't matter whether the house is built or at a design stage but I would need electronic CAD drawings. I'd also welcome input as to what you all think about the focus of such a project.

Please feel free to ask or whisper any questions

Thanks in advance

Mike]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9678 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9678 Thu, 11 Oct 2012 07:19:31 +0100 an02ew
Our build consists of large (80m2 footprint) extension to an old cottage(60m2 footprint), with all all be built to highest standards of insulation and best practice air tightness, whilst the new has been relatively easy to construct to the exacting low energy standards the old has tested my resolve on many occasion, and we were advised at the start that to try and convert this old build to full PH standards would be very expensive and almost impossible.

However with the discovery of the slightly lesser PH enphit, maybe it would worthwhile? I have downloaded the PHPP demo, but it seems hard work maybe due to demo version. So a few Qs

1 what is involved in the assessment procedure?
2 what is the cost of the complete assessment?
3 is there anyone on the GBF that can do a cut price job?:bigsmile:
4 can i do the PHPP? Where can i get the software (free?)]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9651 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9651 Wed, 03 Oct 2012 23:25:37 +0100 tony http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9609 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9609 Mon, 24 Sep 2012 11:22:35 +0100 jms452
Looks interesting and may actually allow the comparative element that imeasure promises but never seems to deliver.

However another parallel system of energy monitoring would be a pain so I'm after opinions from users before entering all my data!]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9592 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9592 Thu, 20 Sep 2012 18:08:41 +0100 GreenPaddy
SAP rating=97%
EI rating=95%
DER=5kgCO2/m2

Pretty good I'd have thought....."computer says no". It fails as the 'multifuel' log boiler stove has an efficiency of 71%, below some magical figure, and also the TER is 4kgCO2/m2.

Re-working the fuels sorces (primary now electric) it passes;

SAP rating=93%
EI rating=92%
DER=12kgCO2/m2

Ignoring the bonkers system that fails a more efficient house, producing 1/3 of the CO2, can anyone point me to the regs which state a minimum value for the boiler efficiency. I'm familiar with SAP2009 9.90 procedure document, and I can't find a minimum there (infact the default values are 60-65%).

Help???]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=7920 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=7920 Mon, 10 Oct 2011 22:13:25 +0100 tony
The efficiency of the use of fuel is slightly different

as is the overall efficiency of the system as a whole

What does efficiency mean? should we qualify what aspect of efficiency we are talking about in our discussions]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9481 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9481 Wed, 22 Aug 2012 10:21:11 +0100 Triassic
Did you know you can get free copies of the full EPC for both domestic and commercial properties from Landmark.

Domestic: https://www.epcregister.com/reportSearchAddressByPostcode.html

Non-domestic: https://www.ndepcregister.com/reportSearchAddressByStreetTown.html

(And if you don't know the postcode you can click on "I don't know the postcode" and put in the address instead.)]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9401 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9401 Tue, 31 Jul 2012 12:22:37 +0100 Bft
How is everyone else managing. Surely it is not practical to calculate all the bridging details for each dwelling or development.

The thermal bridging has such a large effect on the calculation.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9433 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9433 Thu, 09 Aug 2012 08:46:45 +0100 tony
But there is a problem as we now have A+, A++, and even A+++

It seems to be a system that is falling apart, also no account of total use, a small fridge uses less than a USA style fridge freezer.

Do we need a new appliance rating system?]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9155 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9155 Fri, 01 Jun 2012 09:52:47 +0100 jms452
The porch covers an old & drafty (but pretty) front door and about 15m2 of mostly sold wall with 0.2 walls, 0.1 floor, 0.15 roof, 0.7 window and 1.0 door to the point where is essentially at internal temperatures without heating. It is also built into an interior corner so actually reduces the wall are of the house (see diagram)

I am gutted that after all our effort to address this (last) thermal weak point the assessment assumes that the porch is outside!

Is there a magic phrase I can use when we next have an EPC conducted to explain the lunacy of this to the assessor as this is going to make achieving an A impossible!]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9415 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9415 Sat, 04 Aug 2012 00:09:14 +0100 tony
Can you add or change any of my questions -- max no of questions is ten


Survey

Have you installed any energy saving measures during the past twelve months?

Do you have any solar panels on your home?

How much Loft insulation do you have? 100mm 200mm 300mm? more?

Are your walls insulated any better now than when the house was built?

Do you have double glazing ? or triple glazing?

Are your windows and doors draught proofed?

Is your boiler a condensing type one?]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9407 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9407 Thu, 02 Aug 2012 10:43:15 +0100 Pugliese
Should I be concerned that there are apparent errors like 6 x air changes when it should be 0.6 or the fact that it will all come out in the post build SAP, shall I just move on.

It has been mentioned on this forum that as a tool for assessing our heating needs it is not much good, so I am wondering if analysing it all and picking up all the errors is really worth it.

Also is there a list anywhere of target values for CO2 emissions, fabric heat loss and Space heating requirement per m² (kWh/m²/year)? It would be nice to understand how the house compares to the norm.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9379 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9379 Sat, 21 Jul 2012 00:22:39 +0100 tony




I was going to call this thread "Saving more using more?"]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9184 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9184 Fri, 08 Jun 2012 22:08:58 +0100 tony
what do we think about internal infra red thermal imaging surveys?]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9149 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9149 Wed, 30 May 2012 21:02:13 +0100 tony
Hoping to get them to do improvements anyway but they want a D now.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9074 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9074 Mon, 14 May 2012 16:22:50 +0100 telegramsam http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9059 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=9059 Thu, 10 May 2012 12:13:17 +0100 alistairm
The calculations are ok and i have a reasonable grasp of using the program and its many flaws and glitches.

I often have problems with interstitial condesation and am looking to get a better understanding and knowledge of the problems how to overcome them.

I am also very interested in Passiv Haus and have looked into becoming a Passiv Haus designer but wish to gain more knowledge and a solid understanding of the basics before I pursue that avenue any further.

Any help or links to teaching aids / tutorials etc would be great


Thanks in advance]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8887 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=8887 Tue, 03 Apr 2012 10:34:46 +0100 kebabman that was kindly mentioned recently and hopefully I have made an acceptably accurate inputting of data for my house.
I am now wanting to know how I size a boiler from the results. I guess I should be looking at the "energy consumed by build kWh" in the SAP section? For the worst month I get a total figure of 6200 kWh, so do I divide this by say 30 days. I am then wondering how many hours I then divide by. If I divide by say 15 hours I get a figure of 13.77kWh.
The house is listed, about 250m2 floor area, rubble stone walls with no wall insulation but I have put in that we hopefully will be able to put d/g into most windows and can insulate the roof pretty well and will draughtproof as well as possible. The EPC says F which seems about right.
I used some other boiler calculators a while ago and got a figure of around 28kW for boiler size. But obviously this software should be far more accurate if I have entered the data correctly.
Does anyone live in a house of similar construction and so could let me know their boiler size/heating requirements and their floor area please?
Any comments regarding the kWh figure as it sound too low to me.
Cheers
Andrew

PS I guess that I am really after the hourly heating requirement so that I can see how often a thermal store will need to be charged up by a biomass boiler that would obviously have a far higher kw output than the hourly heat requirement.]]>