Climate-controlled greenhouse systems

Controlling the climate allows you to grow any crop, any time of the year, whilst maintaining consistency and quality, which will in turn will lead to higher yields and the best possible return on your investment. At Netafim we have vast experience delivering highly specialized climate-controlled greenhouse systems in countries all over the world.

Creating the perfect growing conditions, all year round

Climate-controlled greenhouse projects are enabling crops to grow faster, more efficiently, more sustainably and in almost every external condition.

In Netafim we have a dedicated team for climate management, delivering tailor-made climate management systems for every greenhouse we build.

During the feasibility phase we identify which systems will best suit your climate-controlled greenhouse project based on crop, location, available energy sources and market conditions.

READY TO GROW?

READY TO GROW?

Learn how we can help design and deliver your next greenhouse project.

contact us

Cutting-edge climate management system

Our cutting-edge climate systems deliver precision growing conditions in any climatic condition around the globe.

We combine our own in-house systems with those of leading industry partners to deliver all you need for a climate-controlled greenhouse, whatever the crop.

Optimal growing ambient factors are carefully managed through cutting-edge climate controllers, sensors, weather stations, user-friendly software and – most importantly – the biggest training and technical-support team in the industry.

Netafim climate management systems will help you achieve an optimum yield while saving energy and being more sustainable. In short, growing more with less!

Innovative heating systems for greenhouses

In a climate-controlled greenhouse project, heating is used to provide optimal temperatures for crop growth and for management of the humidity in the greenhouse.

Heating may be needed throughout the year, not just in winter. So in Netafim climate-controlled greenhouse projects, one of the key factors is finding the most secure, sustainable and energy-efficient heating solution that will deliver ideal growing conditions. That heating solution could be based on a geothermal source, combined heat and power, natural gas or light oil.

With our expertise in the use of sustainable energy, our goal is to help you deliver significant energy savings – leading to significant savings in operational costs for your greenhouse and farm.

Innovative heating system

Delivering optimal growing conditions through heating systems for greenhouses

Spreading the heat

Distributing the heat in a climate-controlled greenhouse is essential in order to guaranty optimal growing conditions.

Heating can be done by using hot air heaters in your greenhouse run on natural gas, petrol or diesel (which also generate CO2 that can be used to enhance plant growth) or by circulation of hot water inside the greenhouse.

Water heating method is the most common practise, especially in cold climate countries, and the most efficient one for large greenhouses or cluster of greenhouses.

In a water heating system, hot water is heated in a boiler and circulates inside the greenhouse structure and in between plant rows via multi-purpose metal tubes (i.e. pipe rail, grow tubes, snow pipes). The temperature and flow of the water is accurately controlled by the central control system based on the require setting points and an on-line measurement of temperature and humidity.

Heat management and CO2 production

Yields increase with a higher concentration of CO2 in the air, so we recover the CO2 out of the combustion process of your boilers and reroute it back into your greenhouse – first through a PVC distribution network and then to the plants via micro-perforated ducts.

Liquid CO2

Netafim has developed a special delivery system that is extremely accurate, delivering the exact amount of CO2 required to each plant. This system combines with your heating system, or can be designed to work independently.

Maximising your heat with a heat storage tank

In Netafim climate-controlled greenhouse projects, heat storage tanks are used to make sure no heat is wasted. During the day our heating systems channel unwanted heat into these water tanks to store energy. The hot water tanks then supply heat to your greenhouse at night.

Cooling systems for greenhouses

High-pressure fogging

Fogging is an advanced technology solution that combines irrigation with energy-efficient cooling – and can be integrated into your wider water-delivery unit. At Netafim we design low and high-pressure fogging systems, depending on what your project requires.

When high pressure droplets as small as 6 micron are pumped into a warm environment via special steel nozzles, they immediately evaporate. This increases air humidity which can be absorbed by plants, without the water falling directly onto the crop and potentially damaging it.

At the same time, evaporating water consumes energy. This fog can then be extracted from your climate-controlled greenhouse, resulting in a decrease in temperature of between 40 – 70C.

cooling system

Cooling pad and fan systems

A cooling pad and fan system is another cooling system for climate-controlled greenhouse projects. The main advantage of this system is high efficiency of cooling without any spraying water inside the greenhouse. A pad and fan system can also be used for increasing humidity if needed for your crop.

  • Outside air is sucked into the climate-controlled greenhouse through pads made from cellulose paper along the greenhouse gable side.
  • If the temperature in the greenhouse is too high, the pads are wetted. As the air passes through the wetted pads, the air is cooled and humidified by the water evaporating from the pad.
  • The heat needed for this evaporation is taken from the air itself. No external energy supply is needed. This is nature’s own cooling process.
  • Once it’s been through the climate-controlled greenhouse, the hot and humid air is removed by exhaust fans.
cooling pad and fan

Screen systems

Controlling the temperature and light in your climate-controlled greenhouse is crucial for cultivation. With a screen installation you can manage both, and save energy at the same time.

Netafim offers a range of screen options. Working with the leading screen-cloth suppliers, we can supply a solution for shading, energy saving, black out – or all three:

Horizontal screens

The most common screens for a climate-controlled greenhouse are horizontal screens. These use a pull-push rod or a pull-wire system, in which the fabric profile and the fabric move together along steel pipes. In the pull-wire system, the fabric is moved using stainless steel wires.

 

Vertical screens

A vertical screen gives you even more control and allows you to screen your production area on all sides. The vertical screen installation is attached to the facade inside and can be operated manually or by a control system.

 

External screens

Netafim also offers external screen, more commonly used in climate-controlled greenhouses in Asia and the Far East. An external screen ensures less heat build-up in the greenhouse, enabling less need for ventilation, better CO₂ management and more energy saved.

Screen systems

Nursery growing systems

Alongside our greenhouse irrigation systems, Netafim supplies a variety of growing systems for nursery use, including specialized automated seeding lines, specialized growing tables, boom irrigation, cooling pads and more – answering all the needs in the life cycle of a plant in a nursery.

Nursery growing systems

Auxilary systems

We offer a host of climate-controlled greenhouse auxiliary systems to support your team from planting to farm gate. These include:

  • Seedling systems
  • Crop handling systems
  • Crop trellising systems
  • Sorting and grading lines
  • Cold storage rooms
  • Advanced electrical systems

Questions our greenhouse project managers are often asked

  • Do I need to add CO2?

    Adding extra CObeyond that which comes through ventilation can increase plant or fruit growth above natural circumstances.

    It’s particularly important if your greenhouse isn't well ventilated, as CO2 struggles to get to the plants, meaning that photosynthesis stops and your plants stop growing.

    But how can you add extra CO2? We do it by recovering the COout of the combustion process of your boilers and rerouting it back into your greenhouse.

    We've also developed a special delivery system of liquid CO2, too. It's extremely accurate and delivers the exact amount of COrequired to each plant.

  • How can I keep my greenhouse warm?

    It's important to keep as much heat inside as you can, so start with insulation. After that, any form of heat can be used. In large greenhouses, hot water is most common. Known as a 'hydronic system', hot water is heated in a boiler and then piped around the greenhouse and between plants via multi-purpose tube rail systems. The temperature and flow of the water can then be accurately controlled with automated pump and valve systems.

    For smaller greenhouses, warm air is an economical option. The warm air is created by heaters run on natural gas, petrol or diesel—which also generate COthat can be used to enhance plant growth—and then distributed with a fan and a heat exchanger. Remember, it’s important in a climate-controlled greenhouse project that heat is distributed evenly for optimum crop production.

  • What is a boiler?

    Just like the boiler in your home, a greenhouse boiler is a large tank with an internal furnace and pipes. A burner (gas, oil or coal) heats the furnace and the pipes. In turn, these pipes heat the water that is pumped through the boiler. Unlike household boilers, greenhouse boilers can be positioned away from the greenhouses themselves, making it easier to control noise and space issues.

  • Why do we need screens?

    Screens help to stabilize the climatic conditions in the greenhouse to save energy. In cold climates, screens can achieve up to 50% heating energy savings, and in some cases even more. In hot climates, they assist with shading to reduce temperatures and save on energy for cooling. In the flower sector, blackout screens assist in defining the exact hours of day and night.

    Screens come in three main variants: horizontal, which use a pull-push rod or a pull-wire system, in which the fabric profile and the fabric move together along steel pipes; vertical, which attaches to the facade inside and can be operated manually or by a control system; and external, which ensures less heat build-up in the greenhouse.

    We regularly work with our customers to come up with a screen system that fits their specific crop needs. And, working with the leading screen-cloth suppliers, we can supply a solution for shading, energy-saving, and blackout—or even all three.

READY TO GROW?

READY TO GROW?

Learn how we can help design and deliver your next greenhouse project.

contact us