How do the blades maintain the temperature of the "factory"?

When the sun shines on the leaves, only 1 ~ 3% of the energy directly participates in photosynthesis, and part of the energy is converted into heat energy, so the temperature of the leaves will rise. If not handled in time, it will burn the leaves. In fact, green leaves have the ability to adjust the temperature, and through the transpiration of leaves, the temperature of leaves is reduced to maintain the normal production of "factories".