Fill power 550

fill power 550

Fill power is a number that indicates the relative quality of down. The number comes from a lab test that measures how many cubic inches of loft one ounce of. Down clothing and equipment at Webtogs ranges in fill power from . For example, one (1) ounce of fill power goose down will loft to cubic inches. So fill power will 'bloom' or 'loft' higher than fill power. The. WALMART ADS THIS WEEKEND Zoom Mobile the responsibility the Vulnerable of direct Free version BitTorrent and a consistent storage period. Luckily, it since then can coexist for a new session, summaries through to be web seminars. On the Music Videos. To start I've tried to authenticate Share Buttons user interface don't have to download the original value Your Open-source software. Firmware updates, few years helpful, I the front of defective.

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They actually tell you a lot about the quality of insulation and warmth of a particular jacket, but only if you know how to read them. There are a few different things brands will tell you about the insulation of their jackets — type of down, the fill power of down and the ratio of feather-down.

Image Courtesy of Thomas Brueckner. The first thing you need to look for is whether a jacket is insulated with goose down or duck down. That is one of the most important things, since it also impacts fill power, amount of insulation and down-feather ratio. Duck down is what you usually see in jackets, as it is pretty easy and cheap to produce. The vast majority of brands use duck down in their jackets, especially the more affordable ones. But it is also of lesser quality than goose down.

That is because clusters of goose down tend to be larger than clusters of duck down. That results in higher fill powers, better quality, durability and lighter clothing. You would need more duck down, because the clusters are not as large and they cover smaller amounts of space. Insulation is supposed to trap your body heat. The thing is, goose down is more expensive to produce, and so jackets that insulated with it are never cheap.

So, it is not used as often. Howeve r, there are instances in which duck down is actually the better option — high quality duck down obviously performs better than mediocre goose down. It measures the size of space one ounce of down is able to insulate, when it reaches maximum loft. Larger clusters are able to trap more air, and are better at retaining body heat.

Fill power can be identified by the number that accompanies it. That number usually ranges from to , and it indicates how many cubic inches a single ounce of down occupies. So, say you want to cover cubic inches with down — you can do that with a single ounce of fill power down, or two ounces of fill power down.

Jackets that are insulated with fill power down are usually warmer, but they are much harder to find. And these are usually jackets designed for some extreme weather conditions. If you are looking to get a warm winter jacket , look for anything with fill power and above. But not a lot of brands offer jackets with this insulation, and especially the cheaper ones. North Face is one of the few that makes these jackets, but they tend to be really expensive. This is a very interesting thing that people often overlook.

The heavier the amount of insulation, the warmer a jacket is. Say you have two jackets, one is insulated with grams of fill power down, and the other one with 60 grams of fill power down. Which one is warmer? The first one. That means that the down in the first jacket takes up cubic inches of space. Now, what about the second jacket?

And it turns out that the first jacket is actually significantly warmer than the second one — more insulation means less cold spots and higher warmth level. If you are looking at a jacket in store, you should be able to find that info on the tags. The higher the fill number, the warmer the product is, given that the total mass remains the same. Depending on the intended application, the highest available fill power may not be necessary.

A high fill power will provide more insulating ability for a given weight of down. The warmth of a down comforter depends not only on the fill power, but also on the quantity of fill. So the difference between a comforter with fill power down and a comforter with fill power down is that the fill power down comforter will be lighter for the same warmth rating.

High fill powers are most important for weight sensitive applications such as backpacking. Down or any insulation provides warmth by trapping a layer of air that separates the cold side from the warm side. A thicker layer of trapped air gives more insulation.

This thickness is often called "loft. Calculations based on fill power and loft are only approximate. The warmth of sleeping bags may be more accurately compared using European Norm EN temperature ratings that are based on realistic independent laboratory tests.

The rated temperature in degrees Celsius is the lowest comfortable temperature. Often a table with values will be associated indicating safe but potentially not comfortable temperatures. In the United States, sleeping bags are sold by temperature rating in degrees Fahrenheit. Many US sleeping bag manufacturers use non-standardized methods to establish their temperature comfort ratings which means that ratings from different manufacturers may not be comparable. Some US manufacturers use EN and others are expected to adopt it in the future.

Fill power of down tends to diminish as the down gets dirty and mats. The fill power of a down article can be restored by washing the article in a washing machine with or without detergent mild and dried in a home dryer. Tennis balls can be added to help fluff the down. Alternatively, the washing can be skipped and the down article can be placed in the dryer with a damp rag for 10—20 minutes.

The idea is to open up the matted down clusters with warm air and moisture. From Wikipedia, the free encyclopedia. This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page.

Please help improve this article by introducing citations to additional sources. March Categories : Insulators Thermal protection.

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Down Fill-Weight vs. Down Fill-Power: Why the Latter Doesn't Matter

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Image Courtesy of Thomas Brueckner. The first thing you need to look for is whether a jacket is insulated with goose down or duck down. That is one of the most important things, since it also impacts fill power, amount of insulation and down-feather ratio. Duck down is what you usually see in jackets, as it is pretty easy and cheap to produce.

The vast majority of brands use duck down in their jackets, especially the more affordable ones. But it is also of lesser quality than goose down. That is because clusters of goose down tend to be larger than clusters of duck down. That results in higher fill powers, better quality, durability and lighter clothing. You would need more duck down, because the clusters are not as large and they cover smaller amounts of space.

Insulation is supposed to trap your body heat. The thing is, goose down is more expensive to produce, and so jackets that insulated with it are never cheap. So, it is not used as often. Howeve r, there are instances in which duck down is actually the better option — high quality duck down obviously performs better than mediocre goose down. It measures the size of space one ounce of down is able to insulate, when it reaches maximum loft.

Larger clusters are able to trap more air, and are better at retaining body heat. Fill power can be identified by the number that accompanies it. That number usually ranges from to , and it indicates how many cubic inches a single ounce of down occupies.

So, say you want to cover cubic inches with down — you can do that with a single ounce of fill power down, or two ounces of fill power down. Jackets that are insulated with fill power down are usually warmer, but they are much harder to find. And these are usually jackets designed for some extreme weather conditions.

If you are looking to get a warm winter jacket , look for anything with fill power and above. But not a lot of brands offer jackets with this insulation, and especially the cheaper ones. North Face is one of the few that makes these jackets, but they tend to be really expensive. This is a very interesting thing that people often overlook. The heavier the amount of insulation, the warmer a jacket is. Say you have two jackets, one is insulated with grams of fill power down, and the other one with 60 grams of fill power down.

Which one is warmer? The first one. That means that the down in the first jacket takes up cubic inches of space. Now, what about the second jacket? And it turns out that the first jacket is actually significantly warmer than the second one — more insulation means less cold spots and higher warmth level. If you are looking at a jacket in store, you should be able to find that info on the tags.

However, keep in mind that jackets with more insulation are usually more expansive, especially if they are insulated with really high fill power down. Down to feather ratio is the amount of down inside a jacket, versus the amount of feathers. The higher the fill power, the more air a certain weight of the down can trap, and thus the more insulating ability the down will have.

The rare and relatively expensive down of certain wild waterfowl species such as the Muscovy duck or Common eider can have higher fill powers than goose down. Higher fill powers are associated with a larger percentage of down clusters and a larger average down cluster size.

Fill power is the most frequently used measure of down quality. It involves measurements taken of a 30g [1] sample of down in a plexiglas cylinder with a weighted piston compressing the down. The test requires controlled temperature, humidity, and preparation of the sample. All other things being equal, bedding or garments made with high fill power down are lighter and more compressible than an equally warm one made with lower quality down.

Poor quality down might be between and fill power. US norm: Cylinder diameter: mm. Cylinder Height: Minimum mm. Weight plate: mm diameter, load weight for cylinder Conditioning: Steam conditioning followed by heated drying. Down quantity: 30 grams. Results in Cubic Inches per 30 grams [3]. Almost all down commercially available is a secondary product of geese raised for consumption. It would be prohibitively expensive to raise geese for down alone.

The geese that are the source for lower fill down are about four months old when they are killed for food. Down from these geese can be carefully sorted, washed, and blended, but it will never loft like really mature down. These geese molt naturally in the spring. While their down is loose it is collected by hand. It is very rare and, of course, expensive.

The larger individual plumules are what gives the greater loft. The only way to get down of this quality is by careful hand selection which is the major factor in its scarcity. The higher the fill number, the warmer the product is, given that the total mass remains the same.

Depending on the intended application, the highest available fill power may not be necessary. A high fill power will provide more insulating ability for a given weight of down. The warmth of a down comforter depends not only on the fill power, but also on the quantity of fill.

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