Constructing a Greenhouse Window

Building a window in a greenhouse and building a sensor to judge the degree to which the window is open Introduction When using a greenhouse for seasons or commercial reasons to grow plants on a large scale the window is completely closed There is a possibility that the temperature becomes too high, you need to open the window.

The sun shines through the glass window of the greenhouse. The sun warms objects in the greenhouse. Then these things get hot. However, the glass in the greenhouse does not emit heat. If the greenhouse is not ventilated, all heat is trapped inside and the temperature rises. If the window is closed on a sunny day, the inside of the car may be warmed by this greenhouse effect. The earth and its atmosphere seems to be a huge greenhouse. Like the glass window of the greenhouse, the atmosphere is almost transparent to shortwave and visible solar radiation. A part of the energy absorbed by the earth is radiated into the atmosphere as long wave infrared rays. Since it contains carbon dioxide and water vapor, they absorb most long wave radiation before being partially re-radiated to the surface, so the atmosphere is not completely transparent to such long wave radiation. This warms the earth and its atmosphere

"Greenhouse effect" is a term used to refer to the atmospheric process. The greenhouse effect is that long wave radiation can not escape from the atmosphere, causing an increase in temperature and an increase in atmospheric impurities. In the last two decades, media and the public have regarded this topic as "priority". There is evidence that the atmosphere is warming and there is a strong sign that the greenhouse effect is the cause of this phenomenon. Clearly in the past century the temperature of the earth has risen by about 0.5 ° C. The record in the 1980s was the warmest 10 years of record. The only problem with this comparison is that the history of climate records dates back 100 years ago. With this in mind, there is no long-term comparison theory, but short-term alerts are available.

The "greenhouse effect" of the atmosphere is like a greenhouse that gets warm in a greenhouse. However, the greenhouse is not mainly affected by the "greenhouse effect". Since the heating in a typical greenhouse is due to the reduction in convection, the "greenhouse effect" is actually misnomer, but the "greenhouse effect" is to prevent the absorbed heat from escaping the structure through radiation Work. The greenhouse is made of any material that passes through the sun, usually glass or plastic. The sun warms the material on the ground and the inside like the outside, then warms the air. On the outside, the warm air near the surface rises and mixes with cold air, the temperature is kept lower than the inside. And, as the air is trapped in the greenhouse, the temperature continues to rise. This can be demonstrated by opening a small window near the greenhouse roof. The temperature drops dramatically.