4 ms·
The enthalpy of fusion for water is 335 J/g. The specific heat capacity of ice at -10C is 2.1 J/(gK). So the major part in melting the water isn't heating it un
by onnoonno 11y ago
The enthalpy of fusion for water is 335 J/g. The specific heat capacity of ice at -10C is 2.1 J/(gK). So the major part in melting the water isn't heating it until it melts - it is the melting itself that is expensive.
That said, I do see some value in solar ways in the space savings.
- stcredzero 11y agoWhy not awnings over the bike path? This can be done in ways that look awesome and do not ruin the scenery and the view from the bike path. Thin film collectors in the form of tarps suspended from poles would make the installation cost commensurate with installing light poles. You'd need significant R&D in the aerodynamics, etc. However, you already need significant R&D for collector roadways, and you're starting out with an inherently disadvantaged design.