Radiator is an important and basic component of hot water heating system in the process of working. Hot water in the radiator cooling (or steam condensation in the radiator) to indoor heating, to achieve the purpose of heating. The metal consumption and cost of radiator occupy a large proportion in the heating system. Therefore, the correct selection of radiator is related to the economic index and operation effect of the system.
Thermal performance of radiator
The higher the heat transfer coefficient of the same material radiator, the better its thermal performance. The thermal performance of the radiator can be improved by increasing the heat dissipation area of the outer wall (adding fins), increasing the flow speed of the air around the radiator (such as adding a cover to the steel cascade radiator), strengthening the radiation intensity of the outer surface of the radiator (such as coating with high radiation coefficient on the outer surface) and reducing the contact thermal resistance between the various parts of the radiator (such as the steel pipe and the cascade of the steel cascade radiator) Performance.
Economic index of radiator
The lower the cost (yuan / W) of unit heat dissipation, the lower the installation cost and the longer the service life of the radiator, the better its economy. The higher the metal heat intensity (w / (kg ·℃)) of the same material radiator, the better the economy.
Installation, use and process requirements of radiator
The radiator shall have certain mechanical strength and pressure bearing capacity, which shall be easy to install and combine to form the required heat dissipation area; the size shall be small and occupy less room area and space; the installation and use process shall not be easy to damage, and the manufacturing process shall be simple and suitable for mass production.
Sanitary and aesthetic requirements for radiators
Radiator surface should be smooth, easy to remove dust; appearance should be beautiful, and room decoration coordination.
Radiator is divided into radiant radiator and convective radiator according to heat transfer mode. The convective heat dissipation of convective radiator accounts for almost 100%, which is sometimes called "convector". Compared with convective radiator, other radiators dissipate heat by convection and radiation at the same time, which is sometimes called "radiator".