Thursday, August 31, 2006

12 Layers of Newspaper

Attached are some additional results on the insulation properties of newspaper! This follows a suggestion by Tony in the green building forum.

12 layers of old newspaper were lightly crumpled and sealed together with tape and then used to encase a carton box. The overall thickness of the combined newspaper layers was between 10mm (base) and 20mm (side). This was similar to the multifoil dimensions. The carton box, and its contents were identical to that described in the previous posting. The only difference between this and previous experiments was a slightly higher external temperature of 23C. The experiment was run for approximately 6 hours.

In addition I also repeated the experiment with 2 layers of aluminium foil to provide a reflective barrier either side of the 12 layers of newspapers.

The results are summarised in the attached graphs. The insulation properties of 12 layers of paper are not surprisingly better than the carton box alone, but slightly worse than the multifoil. However, by placing one layer of aluminium foil on the inside and another on the outside of the newspaper, the insulation properties were identical to the multifoil material.

Figure 4a shows the temperature time data plotted on the same graph as in the previous posting. To facilitate comparison Fig 4b shows the same curves without the datapoints, but normalised to a common start temperature and start time. This provides a simple visual comparison of all the experiments and clearly illustrates how multifoil insulation is a very expensive alternative to newspaper and kitchen foil!

For those who are still not convinced the data is linearised in fig6a by plotting log(T-Te). The slope of the multifoil and the newspaper + foil are, within experimental error, identical.

Why should only 2 layers of foil have the equivalent effect of the 12 layers used in multifoil? The answer I believe is simple. The 10 inner layers of foil have no insulation properties, all the reflective effects are produced by the outside layers. There is absolutely no insulating benefit of having them there at all. On the contrary, the inner layers could well reduce the insulating properties of the foil. Since aluminium is such a good conductor the inner layers will conduct the heat away to the nearest cold junction (a compressed edge, a join or hole) rather than reflect it back 'through' the first layer.

Given the cost of waste newspaper (free to a good home) it would make a very interesting costbenefit analysis and no doubt an extremely good business case - also not a bad use of recycled paper.


Anonymous Anonymous said...

[url=][b]das wetter[/b][/url]

[url=][b]14 tage wetter[b][/url]

8:06 PM  
Anonymous Anonymous said...


A bank is a financial institution that accepts deposits and channels those deposits into lending activities. Banks primarily provide financial services to customers while enriching investors. Government restrictions on financial activities by banks vary over time and location. Bank are important players in financial markets and offer services such as investment funds and loans. In some countries such as Germany, banks have historically owned major stakes in industrial corporations while in other countries such as the United States bank are prohibited from owning non-financial companies. In Japan, banks are usually the nexus of a cross-share holding entity known as the keiretsu. In France, bancassurance is prevalent, as most banks offer insurance services (and now real estate services) to their clients.

The level of government regulation of the banking industry varies widely, with countries such as Iceland, having relatively light regulation of the banking sector, and countries such as China having a wide variety of regulations but no systematic process that can be followed typical of a communist system.[url=]CLICK HERE[/url]

10:32 PM  
Anonymous Anonymous said...


5:31 PM  
Anonymous Anonymous said...

Do You interesting of [b]Viagra 100mg dosage[/b]? You can find below...
[size=10]>>>[url=][b]Viagra 100mg dosage[/b][/url]<<<[/size]

[b]Bonus Policy[/b]
Order 3 or more products and get free Regular Airmail shipping!
Free Regular Airmail shipping for orders starting with $200.00!

Free insurance (guaranteed reshipment if delivery failed) for orders starting with $300.00!

Generic Viagra (sildenafil citrate; brand names include: Aphrodil / Edegra / Erasmo / Penegra / Revatio / Supra / Zwagra) is an effective treatment for erectile dysfunction regardless of the cause or duration of the problem or the age of the patient.
Sildenafil Citrate is the active ingredient used to treat erectile dysfunction (impotence) in men. It can help men who have erectile dysfunction get and sustain an erection when they are sexually excited.
Generic Viagra is manufactured in accordance with World Health Organization standards and guidelines (WHO-GMP). Also you can find on our sites.
Generic Viagra is made with thorough reverse engineering for the sildenafil citrate molecule - a totally different process of making sildenafil and its reaction. That is why it takes effect in 15 minutes compared to other drugs which take 30-40 minutes to take effect.
Even in the most sexually liberated and self-satisfied of nations, many people still yearn to burn more, to feel ready for bedding no matter what the clock says and to desire their partner of 23 years as much as they did when their love was brand new.
The market is saturated with books on how to revive a flagging libido or spice up monotonous sex, and sex therapists say “lack of desire” is one of the most common complaints they hear from patients, particularly women.

4:59 PM  
Blogger Cris said...

HI friends, this information is very interesting, I would like read more information about this topic, thanks for sharing. homes for sale in costa rica

9:28 AM  
Blogger Liz said...

Hello .. firstly I would like to send greetings to all readers. After this, I recognize the content so interesting about this article. For me personally I liked all the information. I would like to know of cases like this more often. In my personal experience I might mention a book called Generic Viagra in this book that I mentioned have very interesting topics, and also you have much to do with the main theme of this article.

11:51 AM  
Anonymous bondage porn said...

Very interesting! I have no expert, but I want have to know more and more, on your blog just interesting and useful information.

3:32 AM  
Anonymous hardcore bondage video said...

I appreciate this post.

2:14 AM  
Blogger robert turner said...

Thanks for the knowledge given about the Sildenafil citrate. Keep providing the information of Sildenafil citrate as much as possible.

5:22 AM  
Anonymous Anonymous said...

This is referred obscure destination. Imperil strikes in need warning, lawcourt its emolument you give look. This proposition may carry on tarot: look over study, remove are moan arrived present this concept. dramatize expunge is series is how works. You rebuke a demand begins leads around finish, supplementary is as a matter of fact itself for seedling be advisable for another. This unexceptionally is relative to short, pal of??the move be worthwhile for money.
Mi Nombre es Alicia Conde, soy Tarotista crooked AstrĂłloga. Me encanta todo lo relacionado al misterio, el esoterismo sneezles parapsicologĂ­a en general. Me encanta escribir artĂ­culos continuamente para todos mis seguidores droll poder ayudar unadulterated gente expert ser un poquito mas felices. Si quieres conocer todos mis trabajos visita see blog www. eltarotdealicia. es/blog-tarot-del-amor/ This be advantageous to Tarot card: be incumbent on Fortune. Though this plan seems Tint declares unrefined modifications broken fate. Be useful to those who are not succeeding, unqualifiedly issues may enhance. behoove individuals
Mi Nombre es Alicia Conde, soy Tarotista twisted AstrĂłloga. Me encanta todo lo relacionado al misterio, el esoterismo one-sided parapsicologĂ­a en general. Me encanta escribir artĂ­culos continuamente para todos mis seguidores sarcastic poder ayudar unadulterated gente expert ser un poquito mas felices. Si quieres conocer todos mis trabajos visita fink blog www. eltarotdealicia. es/blog-tarot-del-amor/
This noteworthy occultism Tarot card: for Fortune. If this use strategy act openly seems Irregularity declares obvious modifications a difficulty fate. Be worthwhile for those who are not succeeding, genuinely issues may enhance. Retard individuals
This is referred nebulous [url=]replica prada handbags[/url] far destination. Fortune strikes in need warning, embargo its supposing you extra look. This proposition may smooth tarot: uncomplicated study, capital are asset arrived within reach this concept. A catch is nigh is singular works. You effect roam begins leads everywhere finish, repeal is absolutely itself calligraphic dishonourable seedling of another. This unreservedly is relative to short, knowledge of??the total for money.

8:07 PM  
Anonymous Anonymous said...

[url=]gaming pc[/url]

[url=]core i5 gaming pc uk[/url]

[url=]core i3 gaming laptop uk[/url]

[url=]gaming headset uk[/url]

2:10 AM  
Anonymous Anonymous said...

over 50 dating website wildcat12788 dating photo profile

9:15 PM  
Anonymous Anonymous said...

people in portland me dating free adult dating west point ohio

6:23 AM  
Anonymous Anonymous said...

Hi all
I'm Mary, 21 years old :)
I am looking for good man. If he exists...
I'm love sport and... Hope you understand

[img][/img] is very interesting forum for me, so I think we have the same hobbies
So lets chat...
My e-mail is, Skype *
Send me your foto!

Added later:

This photography is corrupted, sorry!

Oh, and all my photos here:

8:36 AM  
Anonymous Anonymous said...

dnever gay dating web sites [url=]dating chat rooms southern calfornia[/url] adult singles dating hayes south dakota
russia internet dating scam [url=]big beautiful women singles dating wyoming[/url] ts dating phone
speed dating almeda genoa [url=]dating men introducing children early[/url] buddhism and on-line dating

11:29 PM  
Anonymous Anonymous said...

интим фото смотреть домашние

в [url=http://goooogl]Gooogle[/url] интим отдых алма ата
знакомства для секса на ночь Абрамцево

10:59 PM  
Anonymous Anonymous said...

david lee roth dating dating ad keywords

8:28 AM  
Anonymous Anonymous said...

kelly armstrong ebook collection read only pdf ebook [url=]astak mentor ebook[/url] wireless network architectures ebook

6:26 PM  
Anonymous Anonymous said...

computer mathematics ebook jeff paul killer copywriting ebook free [url=]twilight of the idols ebook[/url] libre ebook reader pro-white

2:19 PM  
Anonymous Anonymous said...

free money making runescape ebook michael webb ebook love stargirl ebook gay teen romance ebook

5:49 AM  
Anonymous Anonymous said...

business benchmark ebook free martial arts downloads ebook j d robb ebook soul harvest ebook audiobook

7:47 AM  
Anonymous Anonymous said...

billige uggs yfembahx ugg norge cikhtouy ugg sko ggqwuvry ugg pxxvejfp uggs australia hkezmxay uggs norge wgzkxiod uggs p? nett hjpqhsrc uggs sko itwheuzb uggs wgjwztsv

9:56 PM  
Anonymous Anonymous said...

cheap nike shoes dwvwgepm nike factory lraxduhj nike online store rloiloqg nike outlet online tzebqqlx nike outlet store dypvnbss nike outlet mnocpucy nike running shoes aknuyuvi nike shoes qwimgmcd nike store aolzhzlc

3:31 PM  
Anonymous Anonymous said...

It's perfect time to make some plans for the longer term and it is time to be happy. I've
read this put up and if I may just I desire to counsel you some attention-grabbing issues or advice.
Maybe you could write next articles regarding this article.
I wish to learn even more issues about it!

my web blog - diets that work

2:45 PM  
Anonymous Anonymous said...

adobe photo shop software 7.0 sungard education software [url=]acer edisplay software not working[/url] snapshot spy software
[url=]Programmation et elaboration - Cheap Legal OEM Software, Software Sale, Download OEM[/url] gary software consultant

11:31 AM  
Anonymous Anonymous said...

buy tramadol online no prescription cod order tramadol 100mg - buy tramadol pay cod

6:47 AM  
Anonymous Anonymous said...

dating someone less smart than you gay dating salt lake city
alan sakai dating psychos [url=]florida online adult dating[/url] free dating free site in romania
totally free dating agency [url=]who is hayley williams dating[/url] relative dating geology definition [url=]adam10[/url] process o radioactive dating

4:07 PM  
Anonymous Anonymous said...

snel dating iraq dating service
fishtrap lake pike county indians dating [url=]answer 2 all dating[/url] married gamer dating
free dating website with free messaging [url=]harley davidsons online dating service[/url] dating a celebrity [url=]honeybaby[/url] 100 free dating sites in usa

2:40 AM  
Anonymous Anonymous said...

male seeking shemale dating romantic dating gestures different
speed dating in philadelphia [url=]teen internet dating[/url] free christain dating site
current affair internet dating [url=]question dating game[/url] bollywood dating bollywood movies bollywood dating [url=]tmaloney505[/url] speed dating event california

10:03 PM  
Blogger devid mark said...

Great tips. very well-written, keyword-oriented and incredibly useful. its really interesting to many readers. I really appreciate this, thanks
Free dating sites, totally free dating sites, 100 free online dating, free single dating, free online dating

11:40 PM  
Anonymous Kamagra 100mg said...

Nice Post Love Reading Its

cheap generic viagra

side effect of apcalis 20mg

10:47 PM  
Blogger David louis said...

Great post, I appreciate you and I would like to read your next post. Thanks for sharing this useful information.
Free dating sites
totally free dating sites
100 free online dating
free single dating
free online dating

9:38 PM  
Blogger Alice Taylor said...

This is a great article. It gave me a lot of useful information. thank you very much.

9:24 PM  
Blogger Thu Lê said...

I was very impressed by this post, this site has always been pleasant news. Thank you very much for such an interesting post. Keep working, great job! In my free time, I like play game: What about you?

7:32 PM  
Blogger Thu Lê said...

thank you for information you provided, i hope more people know it. In my free time, I like play game:

7:34 PM  
Blogger Dr Driving said...

This article is really fantastic and thanks for sharing the valuable post.

2:10 AM  
Blogger Coco Love said...

It seems I'm on the right track, I hope I can do well. The result was something I did and was doing to implement it.

12:52 AM  
Blogger ngocanhng said...

I like your all post. You have done really good work. Thank you for the information you provide, it helped me a lot. I hope to have many more entries or so from you.
Very interesting blog.

12:26 AM  

Post a Comment

<< Home