Researches show that controlled cooling is required to protect products in cold storage. However, it is a fact that cooling causes weight loss due to moisture loss in products. The air circulated over the cold room evaporator leaves the moisture inside the evaporator surfaces while passing through the cooling fins.
This situation causes the evaporator to snow in a short time. The only way to stop this process, which causes the product to directly lose moisture (weight), is to gain moisture in the room in a controlled manner.
In addition, at the beginning of the season, when the cold rooms have not yet entered the regime (at plus degrees) and the entry and exit of products is at a high level, humidification is very important until the room is completely filled and regime. If during this time the desired humidity in the cold room can not be maintained, the environment begins to absorb moisture from the products, which leads to a serious loss of weight of the products. Controlled humidification is required to prevent all these problems caused by lack of humidity. In this step, the GENFOG humidification system should be activated. It is sprayed at high pressure through special nozzles and released into the environment in very small particles. As a result, the interior of the room is kept under control at the desired relative humidity of 90 – 95%.
Problems Related to Overheating
- Systemic shutdown of production
- Burnt bud development
- Burnt leaves and stems
- No crop formation
- Damaged fruit
- Coloring of the fruit
- Small fruit harvest
PROBLEMS EXPERIENCED BY THE MANUFACTURERS
Problems Due to Too Low Humidity
- Excessive sweating, systemic shutdown
- Burn product growth
Problems Due to Too Much Humidity
- Fungus and mold growth
- Insufficient sweating
- If plants are grown in ideal climatic conditions, they can produce products that meet the demands of consumers.
What is the ideal climate for Plants?
- Temperature between 12 and 27 degrees
- 60 to 80 percent relative humidity
- Carbon dioxide (CO2) concentration of around 350 ppm or higher
BENEFITS OF THE AIR CONDITIONING SYSTEM
- It improves product health and strengthens products.
- High growth rate
- 7 percent more products are grown per square meter.
- Reduces plant mold and fungus growth.
- Durable and long stems, larger
- leaves and larger shoots.
- High quality product is created so that it can be sold at a high price and easily.
• Growing plants in greenhouses also offers many advantages in environments with ideal temperatures. These are;
- Protection from natural phenomena such as rain, hail and wind.
- Protection from pests and other pests.
- Better control of diseases.
- High temperature in the colder months.
Factors affecting heat in greenhouses;
- Temperature outside the greenhouse
- Radiation from the sun
EFFECT OF AIR FLOW ON GREENHOUSE CLIMATE
• The obligation to grow products suitable for natural weather conditions is eliminated thanks to greenhouses.
Conditioned Air Flow;
- Causes higher day temperature
- Higher relative humidity, especially at night
- CO2 Limited Carbon Dioxide.
TEMPERATURE CONTROL VENTILATION + COOLING
• If the outside air temperature is higher than the desired inside temperature, the indoor air needs to be cooled by ventilating the greenhouse.
The most important factors in determining the cooling capacity;
- Outdoor relative humidity
- Cooling efficiency
- The amount of carbon dioxide increase depends on photosynthesis, which is related to the growth rate of the plant.
- When the air velocity passing through the leaves is between 0.25 and 0.75m / s, the amount of carbon dioxide rise is optimal.
- If the speed of the air passing through the leaves is higher than 1 m / s, the increase in carbon dioxide negatively affects the plant.
- If the hourly air changes in the greenhouse are more than 60; The air flowing through the leaves begins to be higher than 0.75 m / s.
- If no air flow or carbon dioxide increases inside, the plant can easily die during the day.