Liquid Nitrogen's opposite???

Question

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"Ideas From Mad Scientist Diary"

Does anyone know which chemical is opposite(or nearly) to Liquid Nitrogen in terms of thermal behaviour?

or if somebody knows some chemical liquid/semi-liquid which has normal temperature around (80-100)+ degree centigrade, not poisonous or obnoxious - should be able to handled like LN2 using sealed containers and some precautions - above all the prices shall be in Mate's rate category?

I wish to use it like Liquid Nitrogen, instead the application is heating system.

http://en.wikipedia.org/wiki/Liquid_nitrogen#Liquid_nitrogen

(P.S: Im totally blank in chemistry!!!!)

Free Green Energy Program:

I'm working on LN2 based home cooling system - small designs worked. When design is finished I am hoping to put the whole project as "Open Source" on net

So, I need something similar to heat up the homes in winters...brrrrrrr.....

I have cooled down my CPU using LN2 cooled air system with reduced condensation. So, the chamber is tightly sealed - wouldnot expose it to open.

About water related suggestions - "water" needs to be heated using some boiler or heater - thats not what I intend to do. Thats waste of energy again. Lots of alternative already exist for water based heating.

What I intend to do is just harvest the Heat Energy without spending more energy - For example, you donot have to cool the Liquid Nitrogen - you just need to harvest its chilling effect in a efficient way !!!!!!!!!!

Answer 1

I think there is some confusion here about the nature of liquid nitrogen.

Nitrogen is normally a gas at room temperature it can only be turned into a liquid by a special process were it is compressed, cooled in a heat exchanger (still under pressure), then allowed to expand under thermally insulated conditions, which causes it to get colder. (When a gas expands it requires heat to do it; if the heat can't get in from the environment the gas gets colder and colder with each expansion). This cycle of compression, cooling while compressed, then expansion under conditions where heat can't get to it causes it to gradually get cold enough to liquify. This does not happen for free; the process is very energy intensive! You seem to describe liquid nitrogen as if it was a "free supply of coldness"; it is probably a very expensive way to cool objects (especialy with something like a house, where it is unlikely you would ever need to cool more than about 20 C below ambient. It would probably be a better use of energy to use heat pumps, to transfer building heat to the air, a body of water, or the ground, or use evaporative cooling-type heat exchangers. As far as a material that has a "normal temperature" of 80 to 100 C; a materials "normal temperature" is the same temperature as it's surroundings. If you want it to be hotter it has to be heated some how. If you're looking for a way to "store" heat, gathered, say from a solar collector in day time, to allow continued warmth during the night, they have been looking at chambers filled with an easily meltable material which liquifies during the day (absorbs heat) and re-solidifies during the night (releases heat). The use of the phase change of the material allows much more heat to be stored/released than with just warming/cooling of material that stays liquid or stays solid all the time. I hope this info is of some help to you.

Answer 2

Liquid nitrogen is not explosive. After liquifying clean, dry air ,the mixture is distilled and liquid O2 and liquid N2 are separated. Nitrogen gas is acquired for industrial purposes by the fractional distillation of liquid air, or by mechanical means using gaseous air (i.e. pressurised reverse osmosis membrane or pressure swing adsorption). Commercial nitrogen is often a byproduct of air-processing for industrial concentration of oxygen for steelmaking and other purposes.

Answer 3

Water is liquid from 80-100 degrees celcius.

Plus, it's non toxic and readily available.

As an added bonus, it has a high specific heat, meaning that a given volume of it will contain quite a bit of heat.

Answer 4

Simple: Anything overheated to a temperature you've state. Liquid Nitrogen is just Nitrogen that is compressed and really cold. Nitrogen is just like any other element. Put it in a room, it's going to be 22 degrees celcius, or whatever the room's temperature is.

Answer 5

Water looks like you next best choice