Qingdao Solar wall-mounted water heater

Qingdao Solar water heaters wall-mounted heat-absorbing body structure according to the type of flat plate solar collectors can be divided into tube sheet, wing tube, flat cassette, flexible tube type and other types. Flat-plate solar collector heat-absorbing black coating surface becomes mention solar absorber coating, which can be divided into non-selective and selective absorbing coating absorbing coating into two categories. Means a non-selective absorbing coating and optical properties of the radiation-absorbing coating wavelength independent, selective absorbing coating refers to radiation with wavelengths different optical characteristics change significantly absorbing coating, generally simple to achieve a high Solar absorption ratio is not difficult, the difficulty is to maintain a high solar absorption ratio colleagues but also by the lower emission rates. Qingdao Solar selective absorbing coating wall-mounted water heater can be prepared by a variety of methods, such as spraying method, chemical method, the electrochemical method, a vacuum evaporation method, magnetron sputtering method. From a performance point emissivity, taking the best method performance magnetron sputtering.