Reddit Reddit reviews 4 In. X 8 Ft. Aluminum Dryer Vent Duct, for Gas & Electric Dryers

We found 1 Reddit comments about 4 In. X 8 Ft. Aluminum Dryer Vent Duct, for Gas & Electric Dryers. Here are the top ones, ranked by their Reddit score.

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4 In. X 8 Ft. Aluminum Dryer Vent Duct, for Gas & Electric Dryers
Ideal for gas and electric dryer applicationsConstructed of strong flexible aluminumFire resistant4-in diameter Extends to 8-ft in lengthFor complete instructions to an easy installation scroll down or click See more product details
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1 Reddit comment about 4 In. X 8 Ft. Aluminum Dryer Vent Duct, for Gas & Electric Dryers:

u/BizChap ยท 1 pointr/Entrepreneur
  1. The actually container that the bag sits on

  2. How everything comes together. How everything is packed together. Basically, do you keep all your food in a two compartment tray, or a one compartment tray? (Two compartment) http://i.imgur.com/v52lNSw.jpg from trader joes. I have a feeling that two compartment trays hold temp better than 1 compartment trays. It goes back to surface area exposed (At the top where the thin plastic is), basically that cubic-shaped looking sauce area is basically an ice pack in of itself. Also for steaming rice too

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    Contracting/Construction industry/ Packaging


  • Packaging things together in a well insulated way is not that dissimilar to how the construction industry works for homes. How do they build insulation in homes such that houses don't get overally hot down south, while at the same time insulating it such that houses stay warm in the winter up north? Your solution to box packaging / #6 (How it all comes together) should come from this resource.

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    Cooking Curve


  • http://i.imgur.com/j03De5W.png. Fryers have a cooking curve. I have no idea why this is relevant. But I believe its because sometimes, in a-la-carte style cooking (Catering and buffet), items are only cooked to 70%, and the the last 30% cooking is usually blasted in a microwave. If I recall correctly, Applebees was notorious as hell for doing this, until they changed CEO's recently, because I'm blasted with "Wood-Fired Grill ads" on my TV commercials at home, and I don't even use search queries in google for applebees for targeted ad (Definitely a blanket ad). According to how much I know about the mobile ad industry, its usually not targeted to any specific platform, like my TV watching commercial.

  • Applebees even said they no longer "microwave" their food on a TV commercial. so that confirms my supsicions here. And reddit notoriously , including people who've worked there, said Applebees was shit. Lots of places buy food and just microwave nuke it. Especially, panerabread soups. That 100% is pre-bought stuff, due to quality control

  • My point here is that I am not sure if microwave goods are always fully cooked, sometimes they are 70% cooked a-la-carte style. Doesn't have anything to do with insulation, its more so in food quality

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    Engineering


  • Well now that I covered all of that, now its time to do actually engineering. I'll admit i'm a bit rusty as hell here, but bear with me

  • Surface area. We know that the more surface area on a package, the faster it thaws out (consequently it gets to freezing temp faster in a blastchiller). Time to whip out some generic formulas from thermodynamics...it needs to be the simplest formula though. Nothing fancy. We're not talking about pressure changes though, or

  • http://physicsforidiots.com/physics/thermodynamics/. Ah this is a good resource for anyone to understand. Here's the formula Q=MC(deltaT) http://i.imgur.com/qmurRgB.png. This is probably the most essential formula to understanding what insulators do. Basically....your food has mass associated with it M, C is dependent upon whether you use liquidy contents / 2 seperate compartments in container, DeltaT is change in temperature of your food over time. Q is energy from outside ambient temp coming into your box. I might expand here later, but this is important to understand

  • Everything has a Q=MC(Delta T) associated with it, for different areas in your container that have different temperatures in it. This only assumes everything is well packed and and no leakages.

  • Here's my point here : http://i.imgur.com/Q18PmUZ.png. Basically, there's 4 equilibrium points between each point here, T1 , T2, T3, T4. You can do a basic thermodynamic equation comparing T1, T2, then T2, to T3, than T3 to T4, etc. For different conditions, like ambient temperature outside( T4), for what type of food your packing(t1), to the packaging itself (T2, T3)


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    Manufacturing of boxes


  • I do know how boxes are manufacturered.... to some degree. I've seen them in person before. . Its important to understand this because this gives insight on how economically feasible some products are, and how expensive box prices will be (Because box prices you see online are dependent upon how cheaply they can be produced..

  • Box packaging/folding, how it works, is not that dissimilar to origami /craft boxes. http://i.imgur.com/PluMwm3.png. Specifically, box making looks like this https://www.youtube.com/watch?v=8i3riKvCYkM.

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    Insulation Aluminum material


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    types of insulation material (High R or C value)


  • Too lazy, just used amazon "http://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Daps&field-keywords=insulation+material". Cars. You are using car automotive packaging material. http://i.imgur.com/IhAKGPj.png. I thought it looked familiar, its basically what people put on their car to prevent sunlight from making the car really hot (greenhouse effect/ radiation from sun). SIDE NOTE: 3M would be the leader here for finding out the best products. Amazons better for determining the most feasible solution in one search query though.

  • It comes in rolls. Rolls. Because its easy to pack. That much is obvious. Its not that far off from how yoga pads are packed. http://www.amazon.com/BalanceFrom-Purpose-Anti-Tear-Exercise-Carrying/dp/B00JW3CTTQ/ref=sr_1_4?ie=UTF8&qid=1464102720&sr=8-4&keywords=yoga+pad

  • Not only that I've seen this stuff used in duct work. In construction industry. For A/C ventilation. http://www.amazon.com/Aluminum-Dryer-Vent-Electric-Dryers/dp/B017I06P8U/ref=sr_1_8?ie=UTF8&qid=1464102881&sr=8-8&keywords=duct+vent. Its aluminum exterior, with a filler interior (some form of silicone) http://i.imgur.com/R8aLcSY.png. Periodic table of element reference: http://i.imgur.com/YMReh7s.png. Silicon is used for many things, from caulking for bathtub, to bike grease lube, to kitchen materials. Because its economical. Makes sense. Depends on manufacturing method though.

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    Where else aluminum insulation is used:


  • Roofing: https://www.youtube.com/watch?v=7WYfpwskn1M. And A/C vents. And cars. and HVAC industry

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    Aluminum properties


  • Found a datasheet. http://www.macbertan.lk/category/products/mcfoil-ultra/. Matweb was a bit complicated, so i googled it instead under "google images" using search term "aluminum bubble foil thermal properties" until i found a chart. R value is 12.3 http://i.imgur.com/opoQsTZ.png. Its probably around there somewhere.

  • Refrigerants, spray in urethane foam is 6.0 for comparison. http://i.imgur.com/RaanWcQ.png. Air ambient is 1.0 http://i.imgur.com/HmwRNnN.png. Regular cardboard is something like 3.0 or less

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    manufacturing of cheap, insulation material


  • Might as well found out why said material is so cheap, according to amazon, and your competition's packing.

  • Alibaba.com would be the best resource here to see how its made since it probably comes from china. Also, "Google Video" searches. https://vimeo.com/99022623. Found a better video https://www.youtube.com/watch?v=E5PDoD8b86U

  • Buying bulk material, skipping uline. If you buy lots of stuff, sometimes its better to order direct. Here's how I'd go about purchasing it too. http://i.imgur.com/otkDcQK.jpg. >Also, looking at one of the landing pages. http://i.imgur.com/a5q4jkY.png