Stopped - 16 December 2014I stopped the search for solutions in the moment.
The main problem appears to be acceptability of any solution. A solution has to prove that it is save. Either there is no modification to the PPE, like cooling vests or pads under the PPE; or cooling from outside, like providing cool spaces. But each modification to the PPE raises the question of proving and certifying the security of the solution. This is probably to difficult and time consuming to be done fast.
First Venting Prototype - 7 December 2014I build a first prototype for a filtered ventilation of a PPE. It uses a 3M 2135 particle filter and a small radial fan. It deliveres about 1 liter per second filtered air at 13.8V and 0.16A. With fresh air at a dew point of 25 °C entering and totaly saturated air at 35°C leaving, the theoretical maximal cooling power due to evaporation would then be about 50 Watt.
Temperature in treatment centers - Update 6 December 2014Médecins Sans Frontières gave me the following answer regarding the temperatures in the treatment centers "the temperature in the tents is more or less the same than outside, ranging somewhere between 28/30 degrees" (https://twitter.com/MSF/status/540537227374522368)
Update 4 December 2014Fighting Ebola (Twitter @EbolaGC) proposes to post new ideas still on openIDEO (https://twitter.com/EbolaGC/status/540223196700880896).
As the coordination of volunteer development for ideas is still not effectively working for me, I have to decide on myself where to put the priorities. In the moment I design a prototype for a device that vents the PPE with filtered air from the environment. This is quite similar to this idead https://openideo.com/challenge/fighting-ebola/impact/introducing-the-aerotard-comfort-ventilated-protective-bodysuit . This idea was also highlighted in the challenge. And it appears, like no team works on this, so I try to do this.
Update 2 December 2014The material of the Tychem Coveral has a polyethylen coating of about 30µm thickness. This should block water vapor transmissions through the coverall so much, that this his a neglible effect on evaporation cooling. The total values for evaporation cooling given by some authors, should therefore be caused by a slight venting of the cloothing during the activity of the workers.
Update 28 November 2014I still did not manage to find temperature data for Ebola treatment centers. The feedback I receive, looks like clothings or ergonomics specialists are are not yet involved.
In the moment I am building a first simple clothing model for a health care worker in protective clothing. I need this, to assess the effectiveness of simple changes in wearing the PPE.