Vapor Pressure Deficit (VPD) Calculator | Adicot скачать в хорошем качестве

Vapor Pressure Deficit (VPD) Calculator | Adicot

This video provides a demonstration of the Vapor Pressure Deficit (VPD) Calculator. https://www.adicotengineering.com/vap... You can access all our calculators on the HVAC Calculators page or by the drop-down menu. The calculators are listed alphabetically by category. https://www.adicotengineering.com/cal... This Vapor Pressure Deficit (VPD) calculator is used to determine temperature and humidity for indoor grow rooms. I am not a grower, so I cannot advise you what your VPD should be, but here is an excellent article From Cannabis Science and Technology describing VPD at different stages of growth. https://www.cannabissciencetech.com/v... So let us get right into it. You can choose either imperial or metric units. For this demonstration, I will use imperial units. Begin by entering room conditions of 78 degrees Fahrenheit and 60% relative humidity. When you hover over the Leaf Temperature input box, a note explains that as the leaf grows, more evaporative cooling takes place, so the leaf temperature drops. If you do not know your leaf temperature, a rule of thumb is that you could assume a temperature drop of about 2 degrees Fahrenheit. Following that rule of thumb, we will use a leaf temperature of 76 degrees Fahrenheit. These inputs give a room VPD of 1.31kPa and a leaf VPD of 1.1kPa. The clear benefit of targeting a VPD is healthy, robust plants. Another benefit of targeting VPD is energy savings. Let us try one more scenario. Let us say you are in a hot, humid climate. You can allow the temperature to be set to 82 degrees Fahrenheit and 65% relative humidity and still achieve the same leaf and room VPD values of 1.31kPa and 1.1KPa, respectively.