***The current EMU uses a pure oxygen environment to pressurize, provided breathing air and ventilate the wearer. This system is a closed circuit loop that starts as the oxygen is blown out of a duct in the rear of the helmet. Then the oxygen is used by the astronaut or ventilates the suit and is collected via the ventilation intakes located near the hands and feet on the LCVG suit. A centrifugal fan that spins at nearly 20,000 rpm circulates this air out. The air then passes through the contaminant control cartridge, which removes the carbon dioxide and other contaminants from the air. Then the gas passes through the sublimator and heat exchanger. The moisture in the oxygen is removed there by being condensed by the sublimator and carried by the condensate circuit. The air is passed through a carbon dioxide sensor then warmed to prevent foging before it reenters the suit. The water collected from the oxygen is sent to the water-storage tanks for storage. The use of the water collected from the breath and perspiration allows the PLSS to maintain the temperature control longer. The stored feed water and water circuit is to cools the astronaut. To do this the water in the storage tanks is put between two steel plates in the sublimator and heat exchanger by pressure from the primary oxygen circuit. One of the steel plates is exposed to direct vacuum. This same plate is also porous. Water between the plates evaporates through these pores bringing the plate below the freezing point of water. This freezes the water, which seals the pores and stops the flow of feed water. Next to the other plate is where the liquid transport circuit passes; this circuit is connected to the tubing in the LCVG. The heat from the water is transferred via an aluminum wall, which in turn melts the ice in the pours causing more water to evaporate and therefore cool down again. As the astronaut t produces more heat from physical activity the more water is sublimed into space while cooling the water being sent to the LCVG. The water is also used to cool electronic components inside the EMU as well. A temperature control valve located on the Displays and Control Module can also regulate the temperature by changing how much water can flow to the sublimator. Thus allowing them to work at a temperature that is most suited for them.***

http://ssoar.org/research/space-suits/ucb/darrow/

This doesn't work at Mars. Sweating does if you use a MCP Suit of a breathable fabric like Lycra or Spandex.

That is my point about the whole concept of doing a Lunar Base or mission to gain useful equipment for Mars. It doesn't fly.

The comms are different the suits are different, etc, etc, etc...

You would restrict the use of the Moon to only that area visible to Earth and L 1?

The shadowed areas at the poles where water ice might be found don't fall into this area.

What do you do for positioning?

Yes, NASA should continue to explore the Moon, but robots work fine and would answer all the important questions.

BTW, a Soyuz launch is about 10 million and it was once designed to fly CIS-Lunar space. Maybe you should investigate a paying flyby of the Moon with the two 'spare' seats selling for 40 million each...

--Chris Vancil