[TowerTalk] Oil For Dummy Load

[Patrick Greenlee]

*Some common specific heats and heat capacities:*
  Substance 	 S (J/g0C) 	 C (J/0C) for 100 g
  Air 	 1.01 	 101
  Aluminum 	 0.902 	 90.2
  Copper 	 0.385 	 38.5
  Gold 	 0.129 	 12.9
  Iron 	 0.450 	 45.0
  Mercury 	 0.140 	 14.0
  NaCl 	 0.864 	 86.4
  Ice 	 2..03 	 203
  Water 	 4.179 	 417.9
		



*List of orders of magnitude forspecific heat capacity 
<https://en.wikipedia.org/wiki/Specific_heat_capacity>*SI prefix 
<https://en.wikipedia.org/wiki/SI_prefix> 	Factor 	Value J 
<https://en.wikipedia.org/wiki/Joule>·kg 
<https://en.wikipedia.org/wiki/Kilogram>^−1 ·K 
<https://en.wikipedia.org/wiki/Kelvin>^−1 	Item
deca <https://en.wikipedia.org/wiki/Deca-> 	10^1 	94 	Radon 
<https://en.wikipedia.org/wiki/Radon>
hecto <https://en.wikipedia.org/wiki/Hecto> 	10^2 	120 	Uranium 
<https://en.wikipedia.org/wiki/Uranium>
129 	Gold <https://en.wikipedia.org/wiki/Gold>
130 	Iridium <https://en.wikipedia.org/wiki/Iridium>
Osmium <https://en.wikipedia.org/wiki/Osmium>
139 	Mercury <https://en.wikipedia.org/wiki/Mercury_%28element%29>
145 	Iodine <https://en.wikipedia.org/wiki/Iodine>
158 	Xenon <https://en.wikipedia.org/wiki/Xenon>
240 	Caesium <https://en.wikipedia.org/wiki/Caesium>
246 	Ethanol <https://en.wikipedia.org/wiki/Ethanol>
248 	Krypton <https://en.wikipedia.org/wiki/Krypton>
363 	Rubidium <https://en.wikipedia.org/wiki/Rubidium>
377.48 	Brass <https://en.wikipedia.org/wiki/Brass>
385 	Copper <https://en.wikipedia.org/wiki/Copper>
420 	Cobalt <https://en.wikipedia.org/wiki/Cobalt>
444 	Iron <https://en.wikipedia.org/wiki/Iron>
480 	Bromine <https://en.wikipedia.org/wiki/Bromine>
Chlorine <https://en.wikipedia.org/wiki/Chlorine>
502 	Diamond <https://en.wikipedia.org/wiki/Diamond>
520 	Argon <https://en.wikipedia.org/wiki/Argon>
677 	Glass <https://en.wikipedia.org/wiki/Glass>
720 	Graphite <https://en.wikipedia.org/wiki/Graphite>
757 	Potassium <https://en.wikipedia.org/wiki/Potassium>
824 	Fluorine <https://en.wikipedia.org/wiki/Fluorine>
900 	Aluminium <https://en.wikipedia.org/wiki/Aluminium>
kilo <https://en.wikipedia.org/wiki/Kilo-> 	10^3 	1030 	Neon 
<https://en.wikipedia.org/wiki/Neon>
1230 	Sodium <https://en.wikipedia.org/wiki/Sodium>
1660 	Pentane <https://en.wikipedia.org/wiki/Pentane>
≈ 2000 	Oil <https://en.wikipedia.org/wiki/Oil>
2060 	Ice <https://en.wikipedia.org/wiki/Ice>(0°C)
2100 	Coconut oil <https://en.wikipedia.org/wiki/Coconut_oil>
3582 	Lithium <https://en.wikipedia.org/wiki/Lithium>
3767 	Heavy water <https://en.wikipedia.org/wiki/Heavy_water>
4186 	Water <https://en.wikipedia.org/wiki/Water>
4700 	Ammonia <https://en.wikipedia.org/wiki/Ammonia>(liquid)
5193 	Helium <https://en.wikipedia.org/wiki/Helium>
10^4 	14304 	Hydrogen <https://en.wikipedia.org/wiki/Hydrogen>


Roger, please give a couple examples of things with higher specific heat 
(heat capacity) than water that are practical for using in conjunction 
with a DL by typical hams.

While I would never use water to fill a cantenna, a DL with provision 
for liquid coolant could do well with water as the heat transfer 
liquid.  Of the commonly available substances in my limited experience 
only liquid ammonia (as used in old time refrigeration systems) would do 
better but I HATE AMMONIA so would not go there personally.

Patrick        NJ5G

On 12/5/2015 12:00 AM, Roger (K8RI) on TT wrote:
> one point:
>
> Water does not have high heat capacity, but it's great for 
> transferring heat.  1 calorie will heat 1 cc of water 1 deg.
> Heat capacity and the ability are quite different.
>
> 73
>
> Roger  (K8RI)
>