Gas with an average temperature of $600\backslash$deg C and a heat transfer coefficient of $35$ W$/$m$2$K flows through a steel pipeline with an outer diameter of $1200$ mm and a wall thickness of $0\mathrm{.}025$ m$.$ On the outside, the pipe is covered with two layers of insulation: Vermiculite with a wall thickness of $210$ mm and a layer of vermiculite plate with a wall thickness of $310$ mm$.$ Determine the heat loss for the pipeline, the length of which is l m and the temperature between the insulation contact layers. How will the heat loss change if the layers are changed?