Patent ID: 7837127

Claim:
A ventilation system for exchanging outside air with air in a room, comprising: a fine wire heat exchanger formed with first and second channels configured in heat-exchanging contact and each defined with respective inlets and outlets, and arranged to have the first channel inlet and the second channel outlet to be in fluid communication with the outside air, and the first channel outlet and the second channel inlet to be in fluid communication with the air in the room; and a means for balancing respective flows of air through the first and second channels to maximize heat exchange between the respective flows, wherein the means for balancing comprises: a ventilator arranged in a first channel; a ventilator arranged in a second channel; at least four temperature sensors arranged in the outlets and inlets of the first and second channels; and a controller for comparing the readings of the temperature sensors and for controlling the ventilators in the first and second channels, such that the temperature difference between the inlet and outlet of the first channel is approximately equal to the temperature difference between the inlet and outlet of the second channel.