Is It Practical To Combine Atmospheric Water Generators With Greenhouses?

Combining Systems for Optimal Water Harvesting

Combining atmospheric water generators (AWGs) with greenhouses creates a symbiotic relationship between water collection and plant growth. AWGs can collect water from the air, even in arid environments, and store it for later use. This water can be used for irrigation, reducing the need for external water sources and minimizing evaporation. For example, a 10x20 foot greenhouse can collect up to 200 gallons of water per day using a moderate-sized AWG.

Designing an Integrated System

To design an effective AWG-greenhouse system, consider the following factors: climate, humidity, temperature, and sunlight. AWGs are most effective in humid climates (above 60% relative humidity) and temperatures between 50°F and 90°F (10°C and 32°C). A south-facing greenhouse with a clear roof allows for maximum sunlight penetration, which is essential for plant growth and AWG efficiency. The greenhouse can be designed with a sloping roof to collect and store rainwater, further augmenting the AWG’s water collection capabilities.

Case Study and Cost Analysis

In a pilot project, a 20x40 foot greenhouse in a hot desert climate was equipped with a 500-liter AWG. The AWG collected an average of 300 liters of water per day, which was used for irrigation and plant growth. The system reduced water transportation costs by 70% and minimized the need for external water sources. The initial investment for the system, including the AWG and greenhouse infrastructure, was $30,000. Over a 5-year period, the system paid for itself through water savings and reduced transportation costs, with a net savings of $15,000 per year.