I have to design a sleeping bag for a science project....? - lightweight sleeping bags
Well, for science, design is a lightweight sleeping bag, can isolate the heat very well. What types of fabrics light and heat? This design, a conductive fabric tracks ... something that can cause heat well. Please give me some examples of substances that I use for this purpose. Thank you!
Monday, January 4, 2010
Lightweight Sleeping Bags I Have To Design A Sleeping Bag For A Science Project....?
6 comments:
Most materials are insulators, not conductors. I am from this "behavior" might be fascinated part of the draft, because the idea of a sleeping bag to get body heat, release or transfer.
One could speculate, aluminum) materials (like silver "space blanket". Aluminum is a "pilot project" technically, but the ceiling is actually used to reflect heat and keep it, rather than "behavior". Acrylic and Polypropylene "Batch nonwoven" fabric is light, fluffy good insulation and closed cell foam, down, wool and polyester, in particular the nature of the hollow fibers. Silk is an excellent insulator and very easy to use.
Sounds like an interesting project. Good luck!
Most materials are insulators, not conductors. I am from this "behavior" might be fascinated part of the draft, because the idea of a sleeping bag to get body heat, release or transfer.
One could speculate, aluminum) materials (like silver "space blanket". Aluminum is a "pilot project" technically, but the ceiling is actually used to reflect heat and keep it, rather than "behavior". Acrylic and Polypropylene "Batch nonwoven" fabric is light, fluffy good insulation and closed cell foam, down, wool and polyester, in particular the nature of the hollow fibers. Silk is an excellent insulator and very easy to use.
Sounds like an interesting project. Good luck!
The best sleeping bags in the world with light filler, and fibers, such as hollofill or goose, good material nylon outer shell - is filled light and very durable. Interior materials should be light-absorbent, some companies use cotton flannel end. Seeing a good source for the different types of sleeping bags are annual gear guide Backpacker Magazine - you should be able to find a copy in a local library.
ineresting question. Without the exact wording of the criteria that will be difficult to reach the correct answer.
Tissue is a conductor of heat gOdd means that you lose heat and be cold. What he wants for a sleeping bag, a substance that is a poor conductor of heat is.
If no criteria or standards of comfort, durability, can be a very cheap bag, sleeping create OPTIMA, beginning with the work shirt and departure.
Start with a thin layer of reflective Mylar film. These "blankets" are supplied in marathons and camping, including first aid emergency. A simple plastic film with a mirror coating helps the body last much heat. This is called a "service area" in the 1970s, I believe, because of their discovery and development of the U.S. space program.
And I would add a layer of closed cell foam. Closed cell is not very compact and well, but has a high level of insulation. This is especially important if you sleep on the floor. Heat conductionincreases the body on the ground and heat loss, and 1 / 8 "closed cell foam to prevent hypothermia in this situation. 1 / 4" is more than sufficient, and is a platform resting on the sleeping bags standard. integrate into the bag, It is a complete system that is far beyond the capabilities of a standard bag. The last thing that has an outer shell of rip-stop nylon for durability and for some things, like a zipper, buckle, a hood and shows a tie or plates can be mounted . What you will adjust the design tab you customized.
The established parties in this system are:
1) is not very comfortable. The plastic is in cons sharp corners and creases. He will not for what is to breathe into a plastic bag and condense all moisture and watches his body soaked.
2) not be sustainable. the reflective layer on the Mylar film flakes and outside the film is dull and boring Thet a few hours of each movement. This means that you lose is the reflective quality quicklyused only a few.
3), which could potentially be fatal. PLASTC like a sack if they wanted, that oxygen would run fast. You need a secure method of Bell was completely breathable. Both fabrics of wool and polyester / polypropylene are suitable for outdoor use. breathes not retain moisture well and keep very good and warm when wet.
The advantage of this design is:
Low Cost 1). One bag can sustain life-40F degrees could be produced for about $ U.S. 15th
2) light. You can keep the weight below 2 kg. Froth especially when using a closed cell foam thickness at the bottom and a thin.
You might expect a polypropylene lining to remove moisture, reducing the impact of a small plastic bag.
The form should be "Mom", so the contours of the body. Less material = less weight = less air in the heat to keep the surface = less, of which heat loss.
to the actual fabrics and materials, cotton Is the worst of fabric for outdoor use. He loses all insulating properties, if somewhat humid, and is worse than naked when wet. The wool fiber is a miracle. Gets along well, maintaining the special qualities of warmth when wet, and he is very feasible. Polypropylene is a lightweight alternative, ideal for wool, but keeps the bad smells. a few nights and the smell will not be removed from the bag.
For fillings, is less than the best and easiest to calculate compactable when dry. Once wet, it is very little insulation value and heavy and will take days to dry and then be useful without artificial aids. If your life depends on avoiding the bottom.
Thinsulate and synthetic fible as Hollowfill are heavier than down, compact and well, but a high proportion of their heat retained in the wet. a wet sack is now alive hollowfill below zero.
Down is an excellent insulator for sleeping bags and compact well. Use with a liner made of cotton flannel to remove the sweat. Do keep up with Gore-Tex or nylon on the outside to the wind and rain or meltwater beneath you .. A closed foam mattress is also often used to insulate the cold ground, it could be independent or attached to the underside of the bag bag.The need to match the shape of the body heat and save on material and weight. Add bell is also sometimes used.
The system layer is very effective for sleeping bags and can be good, you need to get hot in the cold, hard weather.In or survive extremely cold environments
You do not have to worry about the wet-bag, with the exception of snow melted in his pocket, or sweating in the sleeping bag. Thus, the stock must have a deposit with the capacity and the capillary outer layer of waterproof and breathable Gore-Tex. A bag of this type can remain alive at - 40 degrees Celsius or - 45 degrees Celsius. Good luck!
Down is an excellent insulator for sleeping bags and compact well. Use with a liner made of cotton flannel to remove the sweat. Do keep up with Gore-Tex or nylon on the outside to the wind and rain or meltwater beneath you .. A closed foam mattress is also often used to insulate the cold ground, it could be independent or attached to the underside of the bag bag.The need to match the shape of the body heat and save on material and weight. Add bell is also sometimes used.
The system layer is very effective for sleeping bags and can be good, you need to get hot in the cold, hard weather.In or survive extremely cold environments
You do not have to worry about the wet-bag, with the exception of snow melted in his pocket, or sweating in the sleeping bag. Thus, the stock must have a deposit with the capacity and the capillary outer layer of waterproof and breathable Gore-Tex. A bag of this type can remain alive at - 40 degrees Celsius or - 45 degrees Celsius. Good luck!
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