Patent ID: 9615489
Date: 2017-04-04
CPC Classifications: H05K

Claim:
1. Arrangement for providing air to a room, comprising: a first inlet for taking in air from the room; a first outlet for providing air to the room; a second inlet for taking in air from a space other than the room, the second inlet being connected to the first outlet; a second outlet for exhausting air to the space other than the room; the second outlet being connected to the first inlet; a cooling duct connecting the first inlet and the first outlet, the cooling duct having a cooling module disposed therein for cooling air in the duct; and a first flow control module for controlling a first airflow ratio between an exhaust airflow flowing from the first inlet to the second outlet and a cooling airflow from the first inlet to the first outlet; wherein the cooling module is an indirect evaporative cooling module disposed in the cooling duct such that air flowing through the cooling duct is a secondary airflow through the cooling module, the arrangement further comprising an evaporation duct for providing a primary airflow through the cooling module, the evaporation duct connecting the second inlet and the second outlet.