An intriguing idea Black Wolf! I woke up early this am in my hammock
thinking about your Hammock Radiator. I guess Im not mechanically
inclined enough to fully understand the setup, but wouldnt there be some
1) A long burning candle flame would drop & no longer be in contact
with the boiler tube as the candle slowly burns downthe spring loaded
candles in the Candle Lantern are notorious for getting clogged with melted
wax & malfunctioning. An oil lantern with a wick could solve this
problemit might also have a fuel tank large enough to hold enough oil for
2) A copper tube boiler sounds feasible, but how would you then connect
that to soft tubing?
3) How much heat can be transferred this way to the hammock? Not
enough or too much?
4) Would there be any need to regulate the heat? How?
5) What size tubing is appropriate? ½ ID?
6) The radiator would be filled for each use, then drained for
transport & storage; right? What kind of reusable connectors are suitable?
7) Would filling the radiator with water be a problem? How can you
remove all the air?
8) Would an air-bleed valve be required in the line?
9) What kind of reservoir is needed? How does it function? How can it
10) The heater tubing in the hammock could be heat-suitable soft tubing;
11) A fabric pad that holds the soft tube heater in place can be
constructed for the hammock. It could be placed inside the PeaPod or bottom
blanket so it lies beneath the hammock fabric itself yet still has a layer
of insulation protecting it from the outside air. It must be flexible so it
will conform to the occupied hammock. A size of 24w x 36l with heater
tubes spaced every 4 might be suitable
12) Total soft tubing for this setup would be about 20 for the in-hammock
pad + two 5 connector tubes to the boiler = a total 30 of soft tubing.
How much would this weigh & how much water would it take to fill it?
BW, are you working on such a project, or just making suggestions? Sorry
for all the questions, but Im always intrigued by out-of-the box thinking
like this. In any event, thanks for the ideas
Moderator, Hammock Camping List
Author, Hammock Camping, The Complete Guide
Editor, Hammock Camping News
Owner, Speer Hammocks Inc
On Behalf Of Black Wolfe
Sent: Saturday, October 07, 2006 9:04 AM
Subject: Re: [Hammock Camping] candle heat
Side stepping the candle next to your tarp issues and giving a new approach.
This idea is a miniaturizing of a gravity assisted hot water system.
1) Build a very small boiler, really nothing more is needed than a copper
tubing coil over the candle.
2) A coil of tubing inside your sleeping system. Perhaps built into your
3) Connecting tubing and perhaps a reservoir.
4) Setup; The "boiler" must be at the low point, the "heater", near the
top, with the reservoir at the top. There must be no air bubbles in the
loop. Convection will carry the heated water up through the system, The
cooled water will sink to be rewarmed in the boiler.
Down side? Weight! I expect that we could not make a working system under
1.5 pounds. If the tubing is to small friction will lock it so the heated
water won't flow fast enough to be usable. And if you boil the water it
might create a air bubble that will lock the system too.
Bruce W. Calkins
> Now, the only real problem is not burning up your hammock.
[Non-text portions of this message have been removed]