There are three ways of heat conduction: notification, convection, and radiation.
Convection is caused by the temperature difference between hot and cold air that causes the air in the whole space to flow, thereby increasing the temperature of the space. The air-supply type of bath is to accept this principle. Backward radiation is a carrier of light waves, which transmits heat linearly. The lamp cannon type bath is to accept this principle.
The heating time of the air supply bath is longer and needs to be opened in advance, which is a flaw, but the cooling time is also long (if you want to save energy, you can close it in advance), and it can make the temperature of the entire bathroom rise, and the control is soft.
The bulb type bath does not have the problem of heating time, but is limited by the Angle of light bulb exposure with bias, and the cold and heat in the bathroom are uneven, which is the biggest flaw and not soft enough.
In addition, from the point of view of the heat conduction principle, radiation is a high temperature conduction mode, at 600-800 degrees Celsius is the highest efficiency, obviously accept this principle of manufacturing light bulb bath in the exercise of energy is a bit of a problem.
The merits of each are obvious:
1, the lamp heating can only be local heating fast. It is hot where the lights are shining, especially overhead, and it is often thought to be too hot. However, it does not feel where it can not shine, such as feet and places other than radiation, so I think it is suitable for the top of the shower, and it can be left on during the shower.
2, the wind warming is slower, but the enveloping limitation is large, and the bathroom with a small area can increase the temperature at the same time. You can feel the warmth in every corner of the bathroom. The installation is suitable for the center of the bathroom, do not install the shower room or bathtub above, because when you open the hot water, the wind warm temperature can not be greater than the water temperature (warm wind up to more than 30 degrees, hot water to more than 50 degrees), so the bath will think that it is very cold, it is better to turn off.
In general: the thermal efficiency is high (power saving), but the safety is as good as the wind heating. It’s a little bit of both. The air conditioning type is not good, blowing the body feels very cold.
Bath heat
