… to tackle storing it in hot place (7)
I believe the answer is:
furnace
'place' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for furnace that I've seen before include "Forge" , "Heat generator for cafe urn" , "Chamber greatly heated" , "Run cafe (anag) -- very hot place" , "Structure for intense heating by fire" .)