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🌡Temperature
Greenhouse temperature management consists of heating and cooling systems to maintain optimal growing conditions in different climates. Heating methods include hot air heating, ground or water heating, radiant heating, solar heating, and geothermal heat pumps, utilizing various energy sources to raise greenhouse temperatures, especially in cold seasons.
Cooling systems rely on natural ventilation, forced ventilation, evaporative cooling (wet curtain and fan), shading systems, misting/fogging systems, and mechanical cooling to regulate internal temperatures and prevent heat stress. Additionally, smart climate control systems enable real-time monitoring and automated adjustments, ensuring a stable and efficient growing environment.
Heating section
Heating System
The choice of a heating system depends on greenhouse size, climate conditions, and energy availability, ensuring cost-effective and efficient greenhouse operation.
The heating system generates and distributes heat using fuel combustion (natural gas, diesel, electricity, or biomass) or thermal energy circulation to maintain an optimal temperature inside the greenhouse. Heat is evenly distributed through fans, pipes, or radiation to create a stable growing environment.
- Hot Air Heating: Uses burners or electric heaters to generate warm air, which is circulated by fans.
- Hot Water/Ground Heating: A boiler heats water, which is then distributed through underground pipes or radiators.
- Radiant Heating: Uses hot water or steam pipes to release heat evenly across the greenhouse.
- Solar Heating: Captures and stores solar energy to provide heat, especially for nighttime or cold conditions.
Heat Retention Curtain System
The internal thermal curtain system reduces heat loss and regulates greenhouse climate.
The internal thermal insulation system typically consists of a double-layer curtain structure, installed at the top of the greenhouse or above the crops. It includes insulation screens, a motorized drive system, and a control system. During the day, the curtain retracts, while at night, it extends to form an insulation barrier, reducing heat loss and maintaining a stable temperature inside the greenhouse.
- Reduces light intensity: Prevents direct sunlight from scorching plant leaves.
- Lowers greenhouse temperature: Reduces solar radiation, creating a more favorable growing environment.
- Regulates day-night temperature differences: Provides cooling during the day and prevents excessive heat loss at night.
- Improves energy efficiency: Works alongside ventilation and cooling systems to reduce overall energy costs.
Cooling down
Internal Shading & Cooling System
The internal thermal curtain system reduces heat loss and regulates greenhouse climate.
The Internal Shading & Cooling System consists of retractable shading screens, a motorized drive system, and an intelligent control unit, installed at the top of the greenhouse or above the crops. The system automatically or manually adjusts the shading screens to reduce solar radiation and lower internal temperatures while working alongside ventilation and cooling equipment for efficient climate control.
- Lowers greenhouse temperature: Reduces solar radiation, preventing heat stress and maintaining a favorable growing environment.
- Controls light intensity: Protects crops from excessive light exposure while enhancing uniform light distribution for improved photosynthesis.
- Energy efficiency: Decreases reliance on air conditioning and cooling systems, cutting overall greenhouse energy consumption.
- Optimizes humidity management: Prevents excessive transpiration and helps maintain balanced humidity levels.
- Enhances crop quality: Stabilizes environmental conditions, promoting consistent growth and higher crop yield and quality.
External Shading System
The internal thermal curtain system reduces heat loss and regulates greenhouse climate.
The External Shading System is installed outside the greenhouse and consists of retractable shading screens, a motorized drive system, support structures, and an intelligent control unit. Its primary function is to create a protective barrier outside the greenhouse, reducing solar radiation before it enters and thereby lowering the internal temperature.
- Blocks direct sunlight: The shading screen effectively prevents excessive sunlight from entering the greenhouse, reducing heat accumulation.
- Reflects and dissipates heat: High-reflectivity shading materials reflect a portion of solar radiation back into the environment, slowing the temperature rise inside.
- Enhances air circulation for cooling: The gap between the shading screen and the greenhouse roof allows hot air to dissipate, further improving cooling efficiency.
- Smart automation: Modern systems can automatically adjust the shading screen based on light intensity and temperature, ensuring a stable greenhouse climate.
Natural Ventilation System
The internal thermal curtain system reduces heat loss and regulates greenhouse climate.
The Natural Ventilation System regulates airflow through roof vents, side vents, or louvers, utilizing the air pressure difference and temperature gradient between the greenhouse interior and exterior.
- Reduces greenhouse temperature by expelling hot air and minimizing heat buildup.
- Regulates humidity to prevent excessive moisture accumulation, reducing the risk of mold and disease.
- Improves air quality by facilitating CO₂ exchange, enhancing photosynthesis and crop growth.
- Energy-efficient cooling that operates without additional power consumption, reducing operational costs.
- Minimizes pest and disease risks by maintaining steady airflow and preventing stagnant air zones.
Evaporative Cooling System
The internal thermal curtain system reduces heat loss and regulates greenhouse climate.
The Evaporative Cooling System operates based on the principle of water evaporation absorbing heat to reduce the internal temperature of the greenhouse. The system typically consists of cooling pads, exhaust fans, a water circulation system, and an intelligent control unit.
- Efficient cooling by lowering greenhouse temperatures through natural evaporation.
- Energy-saving and eco-friendly compared to conventional air conditioning, with no need for chemical refrigerants.
- Humidity regulation to maintain ideal moisture levels, especially in dry climates, preventing excessive plant transpiration.
- Improved plant growth conditions by providing a stable temperature and humidity environment, leading to better yields and quality.
- Reduced pest and disease risks by preventing heat stress and minimizing conditions favorable for pest infestations.
Air Circulation Fan
The internal thermal curtain system reduces heat loss and regulates greenhouse climate.
The Natural Ventilation System regulates airflow through roof vents, side vents, or louvers, utilizing the air pressure difference and temperature gradient between the greenhouse interior and exterior.
- Reduces greenhouse temperature by expelling hot air and minimizing heat buildup.
- Regulates humidity to prevent excessive moisture accumulation, reducing the risk of mold and disease.
- Improves air quality by facilitating CO₂ exchange, enhancing photosynthesis and crop growth.
- Energy-efficient cooling that operates without additional power consumption, reducing operational costs.
- Minimizes pest and disease risks by maintaining steady airflow and preventing stagnant air zones.
Let's take a look at real cases
In Kazakhstan, our greenhouse keeps the indoor temperature at 25°C for crop growth even during -25°C winters.
Our ventilation and cooling systems in Thailand reduce energy use by 15%
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Whether it’s greenhouse design, selection of planting systems, or customized needs, our expert team will provide you with efficient and cost-effective solutions.
No.108, Hegang Road, South AreaChengdu Modern Industrial Park, Pidu DistChengdu, Sichuan, China
info@cfgreenway.com
