A carnot engine having a perfect gas aas the working substance is driven backwards
Channel: Doubtnut
Date: 02/08/2020

A carnot engine having a perfect gas aas the working substance is driven backwards and is used for freezing water already at `0^(@)C`. If the engine is driven by `500W` electric motor with an efficiency of `60%` how long will it take to freeze `15kg` of water? The working temps of the engine are `15^(@)C` and `0^(@)C`. The system involves no energy losses. Given latent heat of ice `=333xx10^(3)J kg^(-1)`.