The continuous search for the effective cold generation methods resulted in the creation of thermally driven ejector
refrigeration systems (ERS). Producing cold at various temperatures, the ERS serves to save electric energy and
reduce greenhouse gas emissions. The theoretical analysis of the ejector cycles carried out for various ERS has proved
its capability to generate the cold at +12°С to –40°С, reaching the COP values at 0.7 to 0.1 respectively. The
combined cycles of water conversion, heat and cold production appear to be especially effective.