What is the heat transfer coefficient of an electronic radiator
The heat transfer coefficient K (W/㎡.℃) of the electronic radiator: refers to the heat transfer per square meter of heat dissipation area when the average temperature of the heat medium in the electronic radiator differs by 1 degree from the indoor air temperature. The product of this value and the heat dissipation area, multiplied by the standard heat transfer temperature difference (64.5℃) is the standard heat dissipation of the electronic radiator. That is, Q=K.F.64.5, in the case of a certain heat dissipation area, the greater the K value, the greater the heat dissipation of the electronic radiator. The K value is the comprehensive coefficient of the entire heat transfer process (including convective heat transfer and radiation heat transfer), which is related to the characteristics and use conditions of the electronic radiator itself, such as water flow, internal and external surface conditions, etc.
What is the heat dissipation process of the electronic radiator? When the higher temperature heat medium flows through the electronic radiator, the heat carried by the heat medium is continuously transferred to the lower temperature indoor air through the electronic radiator, and the heat dissipation process is As:
1. The heat medium in the electronic radiator transfers heat to the inner wall surface of the electronic radiator through convective heat transfer (inner surface heat release coefficient);
2. The inner wall surface transfers heat to the outer wall by heat conduction;
3. The outer wall transfers most of the heat to the air by convection heat transfer, and transfers a small part of the heat to indoor objects and people by radiation.
The influence of water capacity of electronic radiator on heating
The electronic radiator has a large water capacity, and the heating system has a relatively large thermal inertia. When the boiler provides intermittent heating, the water cooling time is slightly longer, and the heating room can still maintain a certain temperature for a long time. However, when water is re-watered, the water temperature rises slowly. The system adjustment response speed of large water capacity is slow, and it has no effect on heating quality when heating continuously;
The water capacity of the electronic radiator is small, the start-up time is short, the temperature adjustment is sensitive, the room temperature rises quickly, and it is convenient for household heating metering, which saves money and is convenient;
The heat is carried and transported by flowing water. The water capacity has no direct effect on the heat, but the adjustment time is different.