Heat Transfer
An equipment which converts the latent or sensible heat of one fluid into the latent heat of vaporisation of another, is called a

recuperator
regenerator
boiler
heat exchanger

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Heat Transfer
Water always boils when its

Saturated vapour pressure equals the external pressure on its surface
Temperature reaches 100° C
Saturated vapour pressure is less than the atmospheric pressure
Vapour pressure equals 76 cm of Hg

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