greenhouse evaporative cooling pads

Composition and structure of water curtain

The water curtain is mainly composed of polymer water curtain paper. The wet paper curtain is a special product. After special treatment, it has high structural strength, corrosion resistance and service life of more than six years. We can see the lower resistance and permeability from the light transmittance of the water curtain paper, which shows that the water curtain paper has excellent air permeability and wetness, which can ensure that the water evenly penetrates the entire water curtain wall. The water curtain is a three-dimensional space design of the paper, which provides the largest surface area of evaporation for the heat exchange between water and air, high water resistance and large evaporation ratio. The outer frame of the water curtain is made of aluminum alloy or galvanized sheet, The purpose of selecting these two materials is to prevent rusting. The structure of the outer frame is carefully designed. There is a slot for installing the water inlet pipe inside the upper frame. The water inlet pipe can be fixed inside the upper frame, and the water inlet is in the middle. After the water flows from the water inlet, it is evenly distributed to the whole paper curtain through the water inlet pipe. When installing the outer frame, first place a row of horizontal paper curtains in the upper frame. These horizontal paper curtains play the role of water separation, Make sure that the whole paper curtain evenly seeps downward, then put the prepared paper curtain side by side into the connected frame, put the spliced paper curtain vertically, drill holes on the four sides of the water curtain and fix it with air nails, so that a water curtain is completed.

• The thickness of cooling curtain is mainly 10cm, 15cm and 20cm. We use 150mm odor-free cooling material.

• We use 150 mm thick evaporative cooling medium CELdek (special honeycomb filter layer, Sweden’s high-tech patented product) to fully exchange heat with water, so the cooling effect can reach the optimal level.

• Swedish imported materials actually have better cooling effect than domestic ones, and the price is also relatively higher;

• The outer frame material of the cooling water curtain mainly includes aluminum alloy, stainless steel, aluminum alloy, special profile and aluminum plate processing. The quality of special profile is better than that of aluminum plate processing; Stainless steel is processed and formed from plates. The stainless steel outer frame needs to be identified from the authenticity of stainless steel.

• Firmly determine the quality of the water curtain paper, and touch it back and forth with your hands flat on the water curtain sheet. The quality of the hard paper is better than that of the hard paper. Dark materials are better than light materials in color.

• In order to deceive customers, some manufacturers use domestic water curtains as imported materials for sale, resulting in shorter service life of water curtains (5-10 years for normal water curtains).

The wet curtain is installed on the gable or side wall at one end of the closed house, and the fan is installed on the gable or side wall at the other end. The cooling fan draws out the indoor air, and generates negative pressure to force the outdoor air to flow through the porous wet curtain surface, so that a large amount of heat in the air can be converted and processed, forcing the air entering the room to reduce 10-15 ℃, and constantly introducing it into the room for heatstroke prevention and cooling.

The cooling water curtain fan of the same manufacturer and the negative pressure fan of the same manufacturer will have different cooling effects?

 

What is the cause? Now let’s discuss some excellent factors of the water curtain fan cooling system. Those who are interested can take a closer look!

• If the floor exceeds 5.5 meters, the number of negative pressure fans will increase, otherwise the exhaust air volume will be insufficient, which will affect the cooling effect

• When we use the fan, we must select the fan with sufficient exhaust air volume. It is recommended to use 146 * 146 * 58cm, and the air volume reaches 46000~48000m/h

• The thickness of the curtain fan can be customized according to the situation of the window, which is the best

• No other air inlets are allowed on the side with the water curtain. Since the resistance of air inlet through the empty window is much smaller than that through the wet curtain, in order to ensure that the air passes through the wet curtain as much as possible to achieve the purpose of cooling, there should not be too large gap on the opposite side of the negative pressure fan (that is, the side of the water curtain).

• The distance between the curtain fan and the fan should not be too far, not more than 50 meters, and must be within 50 meters. Otherwise, the cooling effect will be greatly reduced

    

Precautions for water curtain

 

The water curtain is composed of a kind of polymer water curtain paper, while the wet curtain paper is a special product, which is processed through some special processing. Its service life can reach more than five or six years, and it is corrosion resistant and has strong structure

Water curtain negative pressure fan can comprehensively solve some problems such as poor ventilation and high temperature in the room, so what should be paid attention to when it is used for the first time?

• The water tank (or pool) shall be fully cleaned manually to remove the dirt and sundries in it, so as to prevent the water spraying pipe from blocking;

• Check the water pump filter in the water tank (or pool) to ensure that it is in good condition. If the filter is damaged, replace the filter;

• Check the condition of each connecting valve of the water tank (or pool), and adjust the opening/closing according to the instructions;

• If conditions permit, it is better to clean and maintain the water curtain and check the water spray pipe inside.

 

Maintenance of water curtain

 

When stopped

Before shutting down the machine every day, let the fan continue to run for 30 minutes or more after cutting off the water source, and then shut down the machine after the wet curtain is completely dry, which is conducive to preventing the growth of algae, thus avoiding blocking the water pump, filter and water distribution pipe. Algae can grow on any light, wet and bare surface. Here are some suggestions to prevent its growth:

Water curtain

(Chlorine and bromine are two very common chemicals to prevent the growth of algae. However, they are potentially harmful to the wet curtain core and should be used with caution;)

Do not use water from open ponds;

Use water with good quality;

Cover the water supply tank to prevent it from being exposed to the sun and entering dust in the air;

Cut off the water source and let the fan run for a period of time;

The water self-sufficiency system is isolated from other systems;

The wet curtain shall avoid direct sunlight.

Water Quality

The PH value of circulating water is kept between 6-9 (pure water with a PH value of 7). If the PH value is too high or too low, it will damage the wet curtain; The calcium carbonate precipitation contained in hard water does not damage the wet curtain. It is necessary to maintain the concentration of sodium chloride (soft water) within a limited range. If the concentration exceeds (or about) 50000 ppm, salt substances will be precipitated on the wet curtain, thus reducing the airflow it passes through; The concentration of salt in circulating water must be within 50000 ppm, and the concentration of salt in mixed water must be within 40000 ppm.

clean

If the dust in the air tends to block the passage of airflow, the normal operation of the system can usually remove these obstacles. If necessary, spray it with low pressure steam or scrub it gently. Never use chemicals such as chlorine or other pungent smell to clean.

 

Description of greenhouse evaporative cooling pads

Core Attributes and Features

Enhanced Evaporative Efficiency

The cornerstone of greenhouse evaporative cooling pads lies in their exceptional capacity to harness the power of evaporation for efficient temperature reduction. Constructed from an advanced absorbent medium, these pads efficiently collect water and uniformly distribute it across their surface. When air passes through the moistened pads, it undergoes a cooling process, culminating in lowered temperatures and an environment conducive to optimal plant development.

Tailored Design and Dimensions

To accommodate the diverse array of greenhouse structures, these cooling pads are available in various sizes and configurations. This adaptability empowers growers to customize installations to match their specific spatial needs, ensuring uniform cooling and maximum coverage.

Automated Cleaning Mechanism

Greenhouse evaporative cooling pads are engineered with an automated cleaning mechanism that prevents clogging and sustains optimal performance. This feature not only reduces maintenance demands but also upholds consistent cooling efficacy over the system’s lifespan.

Energy-Conscious Operation

Unlike traditional cooling methodologies that demand substantial energy inputs, greenhouse evaporative cooling pads operate on a principle that minimizes electricity usage. By harnessing the inherent process of evaporation, these pads curtail energy consumption, leading to financial savings and reduced environmental impact.

Seamless Integration with Automated Systems

In contemporary greenhouse operations, automation is a vital ingredient for efficiency and precision. These cooling pads seamlessly interface with automated environmental control systems, allowing real-time monitoring and adjustment of temperature and humidity levels. This integration streamlines management and ensures plants experience optimal conditions.

Functional Excellence

Temperature Harmonization

The primary function of greenhouse evaporative cooling pads is to maintain temperature harmony within the greenhouse milieu. As sunlight elevates air temperatures within the structure, the cooling pads introduce moisture, which then evaporates, absorbing heat and consequently lowering temperatures. This produces a comfortable environment conducive to plant well-being.

Humidity Stabilization

Preserving appropriate humidity levels is pivotal for plant health. These cooling pads contribute to humidity stabilization by infusing moisture into the air, thwarting excessively dry conditions that could precipitate stress, wilting, or even crop failure. The regulated humidity fosters a balanced ecosystem that supports optimal growth.

Advantages for Horticultural Applications

Amplified Crop Quality and Yield

Optimal growing conditions directly correlate to superior crop quality and enhanced yields. Greenhouse evaporative cooling pads engender an environment mirroring natural conditions, thereby bolstering vigorous growth, heightened fruit maturation, and elevated overall crop quality.

Stress Mitigation

Fluctuating temperatures and humidity levels can subject plants to stress, rendering them vulnerable to diseases and pests. By preserving stable and amiable conditions, these cooling pads mitigate plant stress, fortifying their natural defenses and diminishing the need for chemical interventions.

Resource Efficiency

Traditional cooling methodologies often involve substantial water consumption and energy expenditure. Greenhouse evaporative cooling pads operate with remarkable resource efficiency, judiciously utilizing water resources and minimizing energy prerequisites. This aligns seamlessly with sustainable agricultural practices, driving operational cost reductions.

Applications in Diverse Horticultural Settings

Greenhouse Cultivation: Precision Unveiled

Greenhouse cultivation hinges on precision. Greenhouse evaporative cooling pads carve a niche in these settings by delivering precise temperature and humidity management. This proves exceptionally advantageous for crops necessitating specific conditions for optimal growth, such as tropical fruits, vegetables, and flowers.

Nursery Operations: Nurturing the Future

Nurseries shoulder the responsibility of nurturing nascent plants through their fragile initial stages. These cooling pads furnish an environment conducive to fostering healthy root systems and robust foliage, laying the groundwork for sturdy plants that can flourish when transplanted to larger fields or gardens.

Research and Experimentation: Reliability Embodied

In research environments, consistency is paramount for achieving accurate results. Greenhouse evaporative cooling pads establish a controlled environment, ensuring uniform growth conditions, empowering researchers to derive dependable conclusions and informed decisions.

Sustainability and Environmental Responsibility

In an era of heightened environmental awareness, greenhouse evaporative cooling pads emerge as a sustainable agricultural solution. By curtailing energy consumption, conserving water resources, and reducing reliance on chemical treatments, these pads align harmoniously with eco-conscious practices that prioritize both ecosystem vitality and agricultural prosperity.