Design a spherical sensible heat storage tank for the concentrator that can store 4 mwh of energy at 574 °c using molten salt (53kno3-40nano3-7nano3 per weight). (a) assuming a 95% heat recovery efficiency from the storage tank, determine the required mass and volume of salt, including the radius of the cylinder that contains the required volume of salt. (b) assuming no wind and an ambient temperature of 25°c, determine the thickness of mineral wool insulation with thermal conductivity k = 0.018 w m-k-1 that will enable this tank to limit heat loss to 1°c per day. (c) scale the storage up to 50 mwh, recalculating its size and insulation. comment on the scalability of the system, i. e. is it better to build a small or a large storage tank?

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.