METHOD AND DEVICE FOR UTILIZING WASTE HEAT IN SMALL HEATING SYSTEMS

摘要

The invention relates to a method and device for utilizing waste heat in small heating systems. According to the invention, the smoke gases exiting a combustion chamber of the small heating system (2) are at least supplied to a first heat exchanger (7) filled with a high-temperature heat transfer medium, resulting in a precooling of the smoke gases to a first temperature. In addition, the precooled smoke gases are supplied to at least one second heat exchanger (10) filled with a low-temperature heat transfer medium, resulting in a cooling of the smoke gases. The high-temperature heat transfer medium charged with a part of the smoke gas energy is used in order to heat materials above the boiling point of water, and the low-temperature heat transfer medium charged with an additional part of the smoke gas energy is used in order to generate hot water for low-temperature processes. Both heat transfer media can alternatively or additionally be used for the operation of an absorption cooling system (17).