The basic principle is almost as same as MVR concentrator.
it may be distinguished in terms of the fact that the latent heat of evaporation energy is generated from the concentrator itself 
and it may be MVR type if it uses high perssure compressor or TVR IF using steam ejector. 
The system is a TVR concentrator in which high pressure steam is supplied to ejector 
and the vapor evaporated from the concentrator is inhaled into ejector to reuse it as the heat source of evaporation