GREENHOUSE AIR HANDLING UNIT AND DEHUMIDIFYING DEVICES
GAHU
Gahu with compressor and desiccant can be controlled proportionally with the fresh air and the inverter fans used on the blowing air side. It performs the humidity and temperature control in the greenhouse completely automatically. With digital control, the ambient air humidity and temperature are controlled precisely.
It provides the heating of the greenhouse with the hot air it produces during the winter season. It has a low energy consumption, it cleans and filters the air. It purifies a significant part of the bacteria in the greenhouse helps to prevent diseases that will greatly reduce plant yield in enclosed areas such as greenhouses or seedlings. It also helps 90% of disease and sports prevention. It does not contain any chemicals and its dehumidification and heating process is completely organic. With its compact exterior dimensions, it can be easily placed just outside the greenhouse.
The system is based on the principle of absorbing the humid air and heating with the aid of a solid zeolite dehumidifier rotor and a blower burner. Then cooling coils in GAHU decrease the temperature and dehumidify the air for the second time.
Key Features
- Compact unit-easy assembly
- Optional hygiene mode, plus HEPA filters
- Low energy consumption
- Better yield quality and quantity
- VPD based precise digital control and automation
- Full integration to universal greenhouse automation systems
- Capability of being monitored and controlled remotely
Understanding VPD and its impact on plant development and resource utilization is essential for grower to optimize yields and costs.
Timfog’s GAHU determines necessary changes with its own automation a special VPD algorithm enabling the healthiest environment and ultimately maximizing plant growth and health.
It provides a more accurate indication of the current evaporation potential since it combines the effects of both temperature and humidity into a single value.
GAHU with compressor and desiccant which can reach 400 lt /h dehumidification capacity in a single device when required, can be used comfortably in very large seedling or greenhouse area thanks to the advantages of communicating with multiple units and being centrally monitored and controlled. Together with fresh air, it will absorb humid air in the greenhouse.
The process consists of a state-of-the-art desiccant rotor and a burner. Water vapor is removed from the air through the rotor and air with low moisture density is released in the greenhouse. Thus, the air inside is heated at the same time.
The system is predicated on the principle of taking and heating the air with the help of the rotor. The desiccant Wheel rotates, changing its surfaces between the regeneration zone and the process air. In here, the rotor is heated by the regeneration air so that the humid air is dried and resent to the relevant siteeliminating fungi, bacteria and viruses in the process, distributing homogeneous air for cooling, heating, dehumidifying and ventilation.
When the ait in the greenhouse is warmer than necessary, GAHU’s cooling mode is activated, maintaining the temperature at desired levels.GAHU decides on these processes with the data, it receives from the greenhouse and external environment. When the high constant temperature is required.PID provides the desired constant temperature value. In addition, the specific humidity of the air passing through the drum is continuously calculated by GAHU’s automation system, begining with the first start of the burner and a periodic follow up at constantly increasing temperatures.
Certification and Testing
Timfog’s quality management system is ISO 9001 certified, ensuring ongoing compliance, meaning that the customer requirements are identified and that the design of the product meets the requirements.
Timfog GAHU devices are tested against conformity with the technical requirements of 2006/42/EC and 2014/35/EU by an independent 3rd party. The devices are always tested before leaving the factory to ensure trouble-free operation. This ensures reliable performance in the field.