The invention discloses a
coupling system of a composite wall body structure and a
heat control system and a control method of the
coupling system, and belongs to the technical field of
building energy conservation. The composite wall body structure comprises an inner layer wall body, an outer layer wall body and a cavity interlayer; the outer-layer wall body adopts a high-density
polyurethane thermal insulation layer, and the surface of the outer-layer wall body is coated with a weather-proof nano waterproof
coating; the inner-layer wall body is made of an
aerogel-based
composite phase change material; an air outlet is formed in the top of the cavity interlayer, a
honeycomb-shaped flow guide grid is arranged at the bottom of the cavity interlayer, and a distributed temperature sensor and a stepless speed regulation fan are integrated in the cavity interlayer; the
heat control system comprises an
evaporator, a compressor, a condenser and an expansion valve. A tube pass of the
evaporator is sequentially connected with the compressor, a tube pass of the condenser and the expansion valve through
refrigerant pipelines to form a circulation path. And the air outlet of the composite wall body structure and the shell side of the condenser are respectively communicated with the shell side of the
evaporator through the heat
recovery air duct to form a
closed loop. Efficient heat preservation, heat
recovery and
energy recycling can be achieved, and the operation
energy consumption of the
refrigeration house is remarkably reduced.