XPost: alt.global-warming
In alt.global-warming Mr. B1ack <
nowhere@nada.net> wrote:
On Sat, 26 May 2018 17:23:46 -0000 (UTC), "Leroy N. Soetoro" <leroysoetoro@hrc-rejected.com> wrote:
http://www.foxnews.com/us/2018/05/23/geothermal-plant-in-hawaii-volcano-s- >>crosshairs-believed-by-some-to-be-on-sacred-ground.html
A reactivated fissure from Hawaii?s Kilauea volcano threatened the Big >>Island?s geothermal plant with a new lava flow Tuesday, which could
trigger the release of toxic gases if it reaches wells at the plant,
Hawaii officials said.
Native Hawaiians have long expressed frustration with the Puna Geothermal >>Venture plant since it came online in 1989; they say it is built on sacred >>land.
Seems like every square inch is "sacred land" ...
In any case, looks as if the plant will be buried in
lava. Last photos showed it lapping at the doorstep.
Geothermal always SOUNDS good, but it never
performs well in the real world. Rock is a pretty
good thermal insulator, so once you suck a little
heat out of it then it takes a long time for that rock
to re-warm to useful levels.
Geothermal may be best not at making electricity
but instead for producing large volumes of somewhat
heated water. A huge amount of electricity/gas is
used just to heat up water for various purposes. If
the earth can get it almost as warm as you need
it to be ... huge savings.
Not so much the form of energy, but the centralized aspect.
Better to extract power from 60,000 small holes than one big hole.
--
U.S. geothermal heat pump shipments This statistic
represents the total number of U.S. geothermal heat pump shipments in
2008 and 2009. In 2008, a total of 59,360 geothermal heat pump units
were shipped. These shipments had a rated capacity of 416,105 tons.
--
https://www.statista.com/statistics/219199/total-shipments-of-geothermal-heat-pumps-by-type-and-capacity/
There are three types of heat pumps: air-to-air, water source, and
geothermal. They collect heat from the air, water, or ground outside
your home and concentrate it for use inside.
...
Geothermal (ground-source or water-source) heat pumps achieve higher efficiencies by transferring heat between your house and the ground or
a nearby water source. Although they cost more to install, geothermal
heat pumps have low operating costs because they take advantage of
relatively constant ground or water temperatures. Geothermal (or ground
source) heat pumps have some major advantages. They can reduce energy
use by 30%-60%, control humidity, are sturdy and reliable, and fit in a
wide variety of homes. Whether a geothermal heat pump is appropriate
for you will depend on the size of your lot, the subsoil, and the
landscape. Ground-source or water-source heat pumps can be used in more
extreme climates than air-source heat pumps, and customer satisfaction
with the systems is very high.
--
https://www.energy.gov/energysaver/heat-and-cool/heat-pump-systems
--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)