• Greenhouse Air Conditioning,
  Greenhouse Air Cooling,
  Greenhouse Fans
• Product Storage
• People Cooling
• Dairy Air Cooling,
  Dairy Cooling
  Cattle Air Cooling,
  Cattle Cooling
• Portable Systems
• Humidification
• Factories
• Warehouse

• Animal Air Cooling,
  Hog Air Cooling,
  Poultry Air Cooling
• Agricultural Product Cooling
• Workplace Cooling
• Sports Teams
• Air Circulation
• Evaporative Cooling – All Types
• Dehumidification
• Outdoor Cooling
• Equipment
• Sporting event portable cooling fans
• School portable fans

Warehouses in U.S., Asia, Europe

• Air cooling of agriculture, greenhouses,
  warehouses.
• Air cooling of hog, poultry and animal environments.
• Cooling Pads from worldwide sources.
• Ventilation – shutters, rack and pinion and others.
• Portable fans, agriculture, industrial and people.
• Window coolers for greenhouses and small agriculture applications.
• Greenhouse cooling of all types.
• Ventilation fan systems.
• Natural ventilation equipment .
• Humidification for cooling, adding humidity and dehumidification.
• Arctic Circle window air conditioning for small greenhouses
  and portable coolers.
• Aerotech
• Euroemme

Information and Help in Deciding on Greenhouse Air Conditioning and Ventilation Needs

When considering Greenhouse Air Conditioning and Building Ventilation, we are basically dealing with maximizing air flow by either natural or mechanical means – with the goal being cooling to or near wetbulb.

Deciding on Natural Ventilation

Natural Ventilation works well for some crops, and in moderate climates, in houses not so large that outside breezes cannot more enough air by force or convection.

Many talk of Natural Ventilation being the wave of the future and contributing to a reduction of cooling costs.

When depending only on Natural Ventilation, you are at nature’s mercy – slow wind speed or no wind speed can cause the greenhouse to heat up. We can’t turn the wind on and off. In most cases, natural Ventilations results by design to be a loose “air filtering facility” – a problem when winter temperatures are low.

One of the reasons Horizontal Air Flow Fans (HAF) have become so popular is because Natural Ventilation does not take care of all of the plants ventilation greenhouse air conditioning needs.

It is important to know that, in many cases if not most, Natural Ventilation does not allow adequate airflow within the plant canopy and micro climate of the plant. In naturally ventilated houses with turbulence and various pockets of no air, then we have the possibility of disease, with the result of more chemical controls.

We have observed, particularly in the tropics and subtropics, facilities growing dense vegetables and cut flower crops where the greenhouses are 200 feet (60m), 270″ (80m), and even 250′ (100+m) wide by similar lengths – depending on small roof vents and 10′ (3m) or 12′ (3.66m) insect screened sidewalls – using natural ventilation.

Crop quality generally suffers. It is recognized that Greenhouse Air Conditioning and Mechanical Ventilation may not be possible for a number of reasons, but smaller units, with larger vents, special insect screen walls and ends, will greatly increase air flow.

In Natural Ventilated houses such vents are better than gutter vents. Most feel gutter vents do not open as high as some advertise, they often leak in rainy season, and do not give the best ventilation. The higher the sidewall the better, but the higher the walls the weaker the structure. Sloped or Boxed Insect Screen helps internal air flow.

Sidewall vents are always beneficial if you are not considering Greenhouse Air Conditioning at first. But whether you have house or 3 or 4 houses gutter connected, you still have two sidewalls.

Roll up sidewalls leak a lot of air unless you buy the more state-of-the-art systems and they can be expensive. Leaking air decreases effectiveness of Greenhouse Air Conditioning and increases the winter heating costs. If you do not use roof vents in Naturally Ventilated houses, it is not generally recommended that air entrances and exits be more than 120′ (36m) to 144′(44m) apart, but it depends on crops and natural air movement.

See our information on Fan-Jets in this website. This is an outstanding greenhouse air conditioning and ventilation system created by Acme Engineering many years ago. The system utilizes air intake shutter, Blower Fan, Prepunched Tubing, and it evenly ventilates the house as air is pulled into the fan, distributed down the tube and out the holes, and then is exhausted out of the house by a properly sized fan.

It works well with Unit Heaters to complete a heat system, and also is an inexpensive and ideal air circulation system to move air in the greenhouse and push warm air onto the crop in the winter. A great addition to the greenhouse air conditioning and ventilation.

Volumes have been written about Greenhouse, Poultry, Hog, Animal, and Agricultural Buildings. The benefits are many. Each system has to be designed to fit each clients’ special needs.