An alternate system uses a fog or great mist injected in to the intake air stream. Although many commercial systems can be found, growers can assemble and set up their own system using a high pressure piston pump and fog nozzles. The basic components are shown in Fig. 1. A two-stage system managed by a two- stage thermostat allows more water to be employed on excessively warm, shiny days. Temperature settings ought to be 5-10\u00b0F apart.<\/p>\n
Algae development in the pads may become a problem that may decrease the effectiveness of the machine and lead to accelerated deterioration of the pads. The addition of an algaecide to the water supply will help in control.<\/p>\n
It is desirable, especially in hard water areas, to add a wetting agent to the drinking water to obtain additional uniform wetting of the pads. A commercial materials or liquid home detergent at the rate of 2 tablespoons per 100 gallons can be used.<\/p>\n
Drinking water for the pads ought to be clean and lower in mineral content to prevent clogging and coating of the pads. A pump, pipes and gutters are accustomed to recirculate the drinking water. A flow rate 113 gallon per minute per linear foot of pad program ought to be provided to guarantee adequate wetting.<\/p>\n
In the most typical cooling system (fan and ![](\"https:\/\/www.ever-power.net\/wp-content\/uploads\/2019\/12\/463-Greenhouse-Auto-Vent.jpg\")
pad), the fans draw air through wet pads that prolong the length of 1 endwall or sidewall. Aspen and covered cellulose are common pad materials that always have life of 1 to 3 years. Approximately one square foot of pad are is necessary for 20 square feet of floor area.<\/p>\n