Re: Flamethrowers
Posted: Tue Jan 08, 2013 3:21 pm
killer cyborg's post has a good analogy, but doesn't explain the main reason it's an issue.
you have to remember that heat is the transfer of energy. heat flows from hotter things to cooler things. when it increases up in a hotter place faster than an object can get rid of it, that object gets hot as well.
the issue with EBA is that only way to get rid of heat in the suit is going to be the 'air conditioning' the suit would have tubes of fluid to pick up heat, and radiatiors and fans and such to move that heat outside the suit. heat transfer systems. the temperature ratings for suits is less the temp the armor can take physically, and more 'how hot can it get before the air conditioning can't keep the wearer perfectly cool.
if you walk into a fire wearing EBA, odds are you won't have to worry about the suit's armor failing, but you probably will have to worry about the air conditioning not working well enough to keep the person inside safe. when the environment around you is too hot, your ability to remove heat from the suit is going to suffer, because heat has to flow from the hotter to the cooler spots. after a certain point (the temp ratings), the suit's cooling systems wouldn't be able to get rid of enough heat to prevent the person inside from getting hot.
so if you are wearing a suit rated for 400 degrees, and walk into a 600 degree oven, it would probably be like being a 200 degree environment for the person inside the suit. uncomfortable, and odds are if you stay there too long you'll have heatstroke, dehydration, burns on the skin from where the hot metal/ceramic/plastic of the suit is close to you, etc.
now, against stuff that only lasts a second or two, like 'plasma' weapons (which by the way, in rifts is not actual plasma, as per Kevin S. and the atlantis sourcebooks. it's 'super napalm'), you don't have to worry much about heat transfer. heat transfers at specific rates by material. this is why metal things warm up faster than wood, for example. but unless you have complex machines to do it, you can't force more heat to transfer than it will naturally. so while the stuff that hits your suit may be hundreds of degrees hotter than your suit is rated for, only a small amount of heat is likely to transfer before the 'plasma' dissipates/burns out.
you have to remember that heat is the transfer of energy. heat flows from hotter things to cooler things. when it increases up in a hotter place faster than an object can get rid of it, that object gets hot as well.
the issue with EBA is that only way to get rid of heat in the suit is going to be the 'air conditioning' the suit would have tubes of fluid to pick up heat, and radiatiors and fans and such to move that heat outside the suit. heat transfer systems. the temperature ratings for suits is less the temp the armor can take physically, and more 'how hot can it get before the air conditioning can't keep the wearer perfectly cool.
if you walk into a fire wearing EBA, odds are you won't have to worry about the suit's armor failing, but you probably will have to worry about the air conditioning not working well enough to keep the person inside safe. when the environment around you is too hot, your ability to remove heat from the suit is going to suffer, because heat has to flow from the hotter to the cooler spots. after a certain point (the temp ratings), the suit's cooling systems wouldn't be able to get rid of enough heat to prevent the person inside from getting hot.
so if you are wearing a suit rated for 400 degrees, and walk into a 600 degree oven, it would probably be like being a 200 degree environment for the person inside the suit. uncomfortable, and odds are if you stay there too long you'll have heatstroke, dehydration, burns on the skin from where the hot metal/ceramic/plastic of the suit is close to you, etc.
now, against stuff that only lasts a second or two, like 'plasma' weapons (which by the way, in rifts is not actual plasma, as per Kevin S. and the atlantis sourcebooks. it's 'super napalm'), you don't have to worry much about heat transfer. heat transfers at specific rates by material. this is why metal things warm up faster than wood, for example. but unless you have complex machines to do it, you can't force more heat to transfer than it will naturally. so while the stuff that hits your suit may be hundreds of degrees hotter than your suit is rated for, only a small amount of heat is likely to transfer before the 'plasma' dissipates/burns out.