METHOD TO ADD HEAT FROM A WASTE STREAM TO A LIQUID STREAM AND INSTALLATION THEREFOR

摘要

The present invention relates to a method to add heat from a waste stream (1) to a liquid stream (2) wherein the liquid stream is first thermally pre-treated by adding a first part of the heat of the waste stream (1) to the liquid stream (2) by means of a heat exchanger (3) and next heat is added to the pre-treated liquid stream (2) by means of a heat pump (4), characterized in that the heat which is released to the liquid stream (2) by means of the heat pump (4) is substantially derived from the second part of the heat of tie waste stream (1) and an installation (10) therefore.