On 30 June 2014 14:14, James Cameron <quozl@laptop.org> wrote:


> On Mon, Jun 30, 2014 at 01:27:50PM +1200, RussellMc wrote:
> > Can you mole plow in annealed copper tubes?
> > May save lots of digging.
>
> Working moleploughs are in demand for irrigation and cable laying.
>
> What I know as a mole-plough is a suitable fabricated hunk of steel plate=
,
girder and tube which is pulled by anything with enough grunt to do so. A
bulldozer usually sufficeth and lesser vehicles may.

The main advantage of a MP where it actually works is the minimal amount of
ground disturbance and lack of need to remove and replace copious fill  -
which usually translates into $
 terms AND you could with care MP a pipe into a residential lawn with only
excessive damage.
_________

>
>
> * Here's my notes on a foray into the research a few weeks
> ago.earth-pipe-air heat exchanger (EPAHE) systems*
>


> Add to those some of:
>

This URL

http://www.sciencedirect.com/science?_ob=3DArticleListURL&_method=3Dlist&_A=
rticleListID=3D-604400877&_sort=3Dr&_st=3D13&view=3Dc&md5=3D63f73b9a79b6914=
96183bca307b9a4b4&searchtype=3Da

produces a relevance sorted [tm] list
for the search: earth air
in Elsevier's "Energy & Buildings" Journal
Of the 551 (!) hits several dozen appear to be of some relevance and
subtantially more may be.


       Russell
--=20
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