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Bed Fan - A Cool Idea!
#11
California has now made it illegal to create methane so no more beans!

http://uschronicle.com/california-passes...cow-farts/
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The following 2 users say Thank You to dexstrom for this post:
sushidog (09-04-2017), Boyntonstu (09-02-2017)
#12
On hot nights, I wear a wet t-shirt and have a small fan blowing right at me.

It's sort of like a miniature swamp cooler.

After a couple hours of course your shirt will dry and it won't work anymore, but by then the nighttime temp has usually dropped to something more comfortable.

Living in "Ziggy the Snail Shell" since May 2015
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#13
I like this idea but find that a moisture wicking t-shirt (I use my old Army ones) and a cool foam (silicone foam?) mattress topper made the biggest improvements.
After that, a sweeping fan which was placed right at laying body height seemed to push away the excess heat pretty nicely.
Not sure it's worth it to reinvent the wheel until other more simple (and cheap) methods are used.

Keep in mind, you can use a hot water bottle as a cold water bottle. Just wrap in a towel and lay next to it. Lasts all night slowly leeching the cooler temps.
There is no replacement for: Research, Planning, Training, and Practical Experience
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pnolans (09-03-2017)
#14
(09-02-2017, 10:24 AM)dexstrom Wrote: California has now made it illegal to create methane so no more beans!

http://uschronicle.com/california-passes...cow-farts/

I need to get a bumper sticker made.

Concerned about the environment?
      Eat Cows, Not Beans!

Eat cows when they are young, before they've produced lots of methane. They taste vealy good.  Rolleyes

Anyway, back on subject - a cold shower or dip in the spring before bed helps, if one is available as does just wiping down with a cool towel (preferably one moistened with a little ice water from the cooler.) I will sometimes place a cold towel under my neck and behind the ears at bedtime, as it cools the blood headed to the brain. If you wrap it around a blue ice pack it lasts a long time. A face towel over the nasal area helps with my hay fever too.  Remember, 90% of the body heat escapes through the head area. Cool the head and you will be more comfortable.

Chip
"There is no worse tyranny than to force a man to pay for what he does not want merely because you think it would be good for him." – Robert Heinlein

"Giving money and power to government is like giving whiskey and car keys to teenage boys. - P.J. O'Rourke
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#15
> Remember, 90% of the body heat escapes through the head area.

Myth

https://youtu.be/qzMfzPFcvJU
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The following 2 users say Thank You to John61CT for this post:
sushidog (09-05-2017), Gideon33w (09-04-2017)
#16
(09-04-2017, 02:47 PM)John61CT Wrote: > Remember, 90% of the body heat escapes through the head area.

Myth

https://youtu.be/qzMfzPFcvJU

THIS. Though, cooling the carotid can go a long way towards comfort in the heat.
There is no replacement for: Research, Planning, Training, and Practical Experience
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#17
Also at any artery close to the skin

Can **you** name them all?

https://www.studyblue.com/notes/note/n/a...k/14408067
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#18
(09-04-2017, 02:47 PM)John61CT Wrote: > Remember, 90% of the body heat escapes through the head area.

Myth

https://youtu.be/qzMfzPFcvJU

I sit corrected (cause I'm not standing.) I looked it up and it's 40% - still not an insignificant amount. 

I guess I need to go soak my head (as that would get both carotids).  Tongue

Chip
"There is no worse tyranny than to force a man to pay for what he does not want merely because you think it would be good for him." – Robert Heinlein

"Giving money and power to government is like giving whiskey and car keys to teenage boys. - P.J. O'Rourke
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#19
The U.S. Army Field Manual 50 years ago used to claim 40-50% percent of body heat" is lost through the head

In 2006, scientists revisited the question. They tested subjects in cold water with and without wetsuits, sometimes with their heads out of water and sometimes with their heads submerged.

They found that the head accounts for about 7 percent of the body’s surface area, and the heat loss is fairly proportional to the amount of skin that’s showing.

At most, according to a 2008 report in BMJ, a person loses 7 percent to 10 percent of their body heat through their head.

-------
BMJ 2008; 337 doi: https://doi.org/10.1136/bmj.a2769 (Published 18 December 2008)Cite this as: BMJ 2008;337:a2769

Head cover in the cold

I agree that the simple statement that "40-50% of body heat" is lost through the head is inaccurate. The true statement is that at – 4 degC half the heat production of a resting (clad) man may be lost through the head and that at –15 degC this may rise to 70%. Also in normal circumstances people do not venture into the cold wearing only swimsuits. The head is also different to other parts of the body.

1. The insulating layer of subcutaneous fat over the head is much less than over the rest of the body, and becomes even less in the elderly.

2. Vasoconstriction is much less effective over the head.

3. The head has a covering of hair over a large area which provides some additional protection but, mainly in males, this covering becomes less with age though the extent varies.

4. Covering the head reduces heat loss caused by temperature difference between the skin and the environment. However the effect of wind and wet are much more important (factors often not measured in laboratory studies) and using a hat provides protection from these factors as well.

5. In babies, where the surface area of the head is a much larger proportion of the total body surface than in adults, and the brain is a major heat-producing organ, prevention of heat loss from the head can be critical.

In fact the use of a close fitting gamgee-lined hat reduced the rate of fall of core temperature in a naked neonate, and also reduced the oxygen
consumption. The same gamgee insulation over the lower abdomen did not have a measureable effect.

To summarise, covering the head in cold weather can produce a marked effect in subjective comfort and reduction of heat loss. I would hate to think that this myth-busting exercise, while discouraging them from venturing out in swimwear, may lead to people going out in very cold weather (cold, windy and wet) without bothering to protect their
heads.

Hypothermia and Cold Stress. Croom Helm, Kent.

Evan L Lloyd
72 Belgrave Road, Edinburgh EH12 6NQ
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#20
(09-02-2017, 10:24 AM)dexstrom Wrote: California has now made it illegal to create methane so no more beans!

http://uschronicle.com/california-passes...cow-farts/

California:

Animals are banned from mating publicly within 1,500 feet of a tavern, school, or place of worship.

http://www.dumblaws.com/laws/united-states/california
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