Energy-Saving Insulated PC Sheet Venlo-Type Greenhouse Including
Roof Window Opening Systems and Constant-Temperature Heating
Equipment
Introdution
The Venlo-type PC board greenhouse is a modular, gable-roofed
structure characterized by its use of polycarbonate (PC) panels as
the primary covering material. Its key features and advantages
include:
- Light Performance: PC boards offer excellent light transmittance (80–90%) while
diffusing sunlight evenly. This diffused light reduces the risk of
leaf scorching, ensuring uniform growth across all crops, which is
particularly beneficial for seedlings and leafy greens.
- Insulation & Energy Efficiency: Multi-layer PC panels provide superior thermal insulation
compared to glass, minimizing heat loss in cold weather and
reducing the need for excessive heating. This lowers energy
consumption and operational costs.
- Durability & Safety: PC boards are shatter-resistant, lightweight, and highly
resistant to impacts (e.g., hail, wind) and UV radiation, extending
the greenhouse’s lifespan. Their lightweight nature also reduces
structural stress, making the design easier to expand or modify.
- Cost-Effectiveness: Generally more affordable than glass in both material and
installation costs, making it a practical choice for small to
medium-scale operations or regions with harsh weather conditions.
Support systems
Roof Window Opening Systems
Roof window opening systems are automated mechanisms for greenhouse
ventilation. These systems control the opening and closing of
roof-mounted windows via motors or pneumatic devices, triggered by
sensors monitoring temperature, humidity, or CO₂ levels.
They facilitate air circulation, expel excess heat or moisture, and
draw in fresh air—critical for regulating the greenhouse
microclimate and supporting plant respiration.
Constant-Temperature Heating Equipment
Constant-temperature heating equipment maintains stable, optimal
temperatures in greenhouses, especially in cold conditions. It
includes boilers, radiant heaters, or heat pumps, paired with
thermostats to adjust output.
By keeping temperatures within a target range (e.g., 18–25°C for
tomatoes), it prevents frost damage, ensures consistent growth
rates, and supports year-round cultivation regardless of external
weather.
