Adjustable outer wall heat collection system

The invention relates to the technical field of building energy conservation, in particular to an adjustable outer wall heat collection system which comprises an outer wall, a plurality of heat collection units arranged on the outer wall, a heat collection assembly, a pipeline, a first connecting pipe, a second connecting pipe and an exhaust pipe. And a plurality of switching valve groups are arranged on the plurality of pipe bodies, so that the first connecting pipe, the second connecting pipe and the exhaust pipe are disconnected or communicated. Through the arrangement of the multiple switching valve sets, the heat collection assemblies can be connected in series or used independently according to the actual requirements of seasons, and different indoor temperature requirements can be met. The heat collection assembly comprises a heat absorption plate, a back plate and a surrounding plate, the surrounding plate, the back plate and the heat absorption plate jointly define a hollow structure, a plurality of