Conclusion p 35: We conclude that not only does LiH have the very high specific latent heat desirable for provision of heat to a solar powered high altitude aircraft, but it also has a very favorable heat transport rate, with an effective thermal conductivity that rivals or exceeds that of copper.
That is extraordinary in itself, but how does high thermal conductivity translate into actual gain? From: Terry Blanton https://drive.google.com/file/d/0B8mt4mJOTGvBU0Q5N2VIN2J5Q2M/view?usp=sharing

