CONTROL METHODS AND SYSTEMS FOR INDIRECT EVAPORATIVE COOLERS

摘要

A control method for operating an indirect evaporative cooler to control temperature and humidity. The method includes operating an airflow control device to provide supply air at a flow rate to a liquid desiccant dehumidifier. The supply air flows through the dehumidifier and an indirect evaporative cooler prior to exiting an outlet into a space. The method includes operating a pump to provide liquid desiccant to the liquid desiccant dehumidifier and sensing a temperature of an airstream at the outlet of the indirect evaporative cooler. The method includes comparing the temperature of the airstream at the outlet to a setpoint temperature at the outlet and controlling the pump to set the flow rate of the liquid desiccant. The method includes sensing space temperature, comparing the space temperature with a setpoint temperature, and controlling the airflow control device to set the flow rate of the supply air based on the comparison.

主权项

1. A control method for operating a cooling system with an indirect evaporative cooler to maintain a temperature of an enclosed space, comprising:
operating an airflow control device to provide supply air at a flow rate to a liquid desiccant dehumidifier, wherein the supply air flows through the liquid desiccant dehumidifier and an indirect evaporative cooler prior to being ejected from an outlet of the indirect evaporative cooler in fluid communication with a space; operating a pump to provide liquid desiccant at a flow rate to the liquid desiccant dehumidifier; sensing a temperature of an airstream at the outlet of the indirect evaporative cooler; comparing the temperature of the airstream at the outlet to a setpoint temperature at the outlet; and controlling the operating of the pump to set the flow rate of the liquid desiccant based on the comparing step.