with the transparent panels 30 31 and the fixed board 14 the heat absorbing set 17 forms smaller upper heat absorbing channels 32 and larger lower heat absorbing channels 33 in the solar collector assembly 20 the lower heat absorbing channels 33 benefit from the heat insulated effect as double glazing and a high efficiency of heat absorption the solar air conditioning system in accordance with the present invention has many features that are superior to those of conventional solar air conditioning systems adapting the concept of a modular design the present invention provides buildings with a greater compatibility in application moreover the present invention provides users with more selection and freedom in assembly the present invention can be installed to all kinds of buildings including ones that are under construction or currently existing ones it can be installed horizontally or vertically attached to walls furthermore it can be installed at an angle the present invention can also provide excellent heat insulation and protection to the buildings the heat absorbing units used in the present invention can be flexibly expanded as desired to the most optimal absorption surface areas to fully receive and collect energy therefore the present invention does not need a fixed outer frame insulation chamber like the one used in the conventional design the present invention also needs no special consideration for the heat efficiency of each individual unit as conventional models do one special feature of the present invention is that although it only has one layer of transparent panel.