Method and system of heat energy conversion

A system for converting energy of a low-temperature into energy of a high temperature comprising:

• means having heating means for concentrating a heat medium of liquid having components of unequal boiling points under a predetermined pressure;
• means, communicating with said concentrating means and having heat exchanging means, for absorbing under the first predetermined pressure the vapor generated by said concentrating means into an intermediate medium of liquid, which intermediate medium of liquid is different from said heat medium and has an intermediate boiling point between the upper-boiling liquid and lower-boiling liquid of the heat medium of liquid;
• means for evaporating the intermediate medium of liquid supplied from said absorbing means under a second predetermined pressure;
• means for transferring the intermediate medium of liquid concentrated in said evaporating means to said absorbing means;
• means, communicating with said evaporating means, for absorbing the vapor generated in said evaporating means into the heat medium supplied from said concentrating means to generate heat under the second predetermined pressure;
• and
• means for transferring the heat medium, diluted by absorption of said vapor generated in said evaporating means, to said concentrating means.

A method of converting low temperature heat energy into high temperature heat energy comprising the steps of:

• concentrating a heat medium of liquid having components of unequal boiling points through evaporation of a lower-boiling liquid of said heat medium under a first predetermined pressure by receiving heat energy of a first predetermined temperature;
• absorbing the vapor of the lower-boiling liquid generated in the concentrating step into an intermediate medium of liquid having a property that a P-T line on the P-T diagram expressing a relation between vapor pressure (P) and temperature (T) has a larger gradient than that of a higher-boiling liquid of said heat medium, while cooling the vapor and the intermediate medium of liquid by heat energy of a second predetermined temperature lower than the first predetermined temperature;
• evaporating, under a second predetermined pressure, vapor of the lower-boiling liquid absorbed in the intermediate medium of liquid by receiving a relatively low temperature energy;
• and
• absorbing the vapor generated in the evaporating step into the heat medium concentrated in said concentrating step, thereby generating heat energy of a higher temperature than the first predetermined temperature.