초록 ▼

An evaporative device for cooling a stream of air for cooling a space into which the air is discharged. The device includes psychrometric sensors installed in the air stream which provide signals to either an analog or a digital microprocessor control device. The stream of air is cooled by one or mo

An evaporative device for cooling a stream of air for cooling a space into which the air is discharged. The device includes psychrometric sensors installed in the air stream which provide signals to either an analog or a digital microprocessor control device. The stream of air is cooled by one or more mist nozzles in the incoming air stream, the flow of water to which is controlled through analog or digital control devices, enabling cooling of the stream of air to the maximum permitted by psychrometric relationships without unnecessarily high humidity.

대표청구항 ▼

A method of conditioning a moving stream of air comprising the steps: providing duct means to direct the stream of air to prevent undesired mixing of the air of the stream with ambient air; providing means for introducing water into the stream; continuously monitoring the psychrometric conditions wi

A method of conditioning a moving stream of air comprising the steps: providing duct means to direct the stream of air to prevent undesired mixing of the air of the stream with ambient air; providing means for introducing water into the stream; continuously monitoring the psychrometric conditions within the stream by placing at least one signal producing psychrometric sensor downstream of the water introducing means; providing means to continuously analyze the psychrometric conditions and using said means to determine whether to add water to the stream to urge psychrometric conditions therein towards a target value; providing means commanding the water introduction means to operate; introducing water into the stream in accordance with the continuing analysis of psychrometric conditions; wherein the psychrometric sensors comprise a relative humidity sensor which varies in electrical resistance in accordance with variations in relative humidity; and the means for analyzing the psychrometric conditions comprises an analog logic circuit acting in response to electrical voltage values corresponding to the electrical resistance of the relative humidity sensor; said method comprising the further step providing an air permeable water evaporation pad extending across the duct downstream of the spray nozzle and upstream of any downstream psychrometric condition sensor.