Q$3(10$ pts$)$ To design a buffer storage $(5$ h$)$ device for a $1$ MW solar thermal power plant that

operates between $200$oC and $300$oC$,$ estimate the amount of LiNO$3$ needed if this material is

used as the latent heat storage medium.

LiNO$3$:

Melting point: $252$oC Latent heat: $530$ kJ$/$kg

Solid phase specific heat: $2\mathrm{.}02$ kJ$/$kg$$oC Liquid phase specific heat: $2\mathrm{.}041$ kJ$/$kg$$oC