Abstract: A Multi-connected Air Conditioner with Refrigerant And Water (MACRAW) multi mode system, includes refrigerant circulation loops of multiple air conditioning units, an outdoor heat exchanger and an indoor heat exchanger, a first circulation loop, a second circulation loop and a main heat exchanger. The first circulation loop and the second circulation loop exchange heat through the main heat exchanger, a second medium channel is provided in each of the outdoor heat exchanger and the indoor heat exchanger, the first circulation loop and the second circulation loop, through each second medium channel, exchange heat with a first medium channel and/or a first air heat exchange channel in each outdoor heat exchanger, and with the second medium channel and/or a second air heat exchange channel in indoor heat exchanger.

Abstract: An adjustable circular tube energy absorption/storage mechanism based on a paper-cut structure is disclosed according to the present application, which belongs to the technical field of advanced intelligent structure. The mechanism is based on the conventional circular tube and obtained by partially cutting the circular tube. The direction of the slits is along the axial direction of the circular tube. Multiple circular tubes may be arrayed in a specific way according to the actual application requirements. When the circular tube is subjected to axial impact force, the cutting section of the circular tube may deform in a specific direction, the circular tube realizes structural energy absorption and energy storage through local buckling deformation, and after the external force is removed, the circular tube recovers from the deformation and releases stored energy.

Abstract: The present invention discloses heat and cold sources of a THIC air conditioning system, comprising: a compressor (1), a first condenser (2) and a second condenser (3), which are connected successively; a first expansion valve (4) and a second expansion valve (5) respectively connected to the second condenser (3); a first evaporator (6) and a second evaporator (7) respectively connected to the compressor (1); the first evaporator (6) is connected to the first expansion valve (4) to form a first cycle branch; the second evaporator (7) is connected to the second expansion valve (5) to form a second cycle branch; the first cycle branch and the second cycle branch which are connected in parallel connect the second condenser (3) and the compressor (1). The heat and cold sources of the THIC air conditioning system of the present invention have a relatively high refrigeration efficiency so as to significantly reduce energy consumption and protect atmospheric environment.