US 10,834,855 B2 · Integrated make-up air system in 100% air recirculation system

Abstract

Systems and methods for controlling conditions in an enclosed space can include an integral make-up air system that can be arranged in the interior of the housing for an air conditioning system that uses scavenger air in an air-to-air heat exchanger (AAHX) to condition process air from an enclosed space. The make-up air system can take replenishment air from outside the air conditioning system and deliver it into the process air stream. The make-up air system can include at least one heating or cooling device to condition the replenishment air before the replenishment air mixes with the process air. In an example, the make-up air system can include a DX coil to selectively cool and dehumidify the replenishment air. The make-up air system can include a humidifier arranged in the flow path of process air between the process air inlet and the AAHX to selectively add humidity to the process air.

Claims21

Dependent claims

A system for conditioning air in an enclosed space, the system comprising:

a housing formed by a plurality of walls that at least partially enclose an interior of the housing;
an air-to-air heat exchanger (AAHX) arranged in the interior of the housing in a flow path of process air between a process air inlet and outlet and in a flow path of scavenger air between a scavenger air inlet and outlet;
and
a make-up air unit arranged in the interior of the housing in the flow path of process air downstream of the AAHX and upstream of the process air outlet, the make-up air unit configured to deliver replenishment air into the flow path of process air, the make-up air unit comprising:
a damper to selectively prevent and allow replenishment air to enter the flow path of process air;
and
at least one heating or cooling device to selectively condition the replenishment air entering into the flow path of process air.

4 more elements

A system for conditioning air in an enclosed space, the system comprising:

a housing formed by a plurality of walls that define an inside and an outside of the housing;
a first inside portion of the housing configured to receive a flow of scavenger air, the first inside portion having a scavenger air inlet and outlet;
a second inside portion of the housing configured to receive a flow of process air, the second inside portion having a process air inlet and outlet;
a direct evaporative cooler (DEC) arranged in the first inside portion and configured to selectively receive the flow of scavenger air through the DEC to condition the scavenger air;
an air-to-air heat exchanger (AAHX) arranged partially in the first inside portion and partially in the second inside portion, the AAHX configured to receive the flow of scavenger air and the flow of process air through the AAHX;
a humidifier arranged in the second inside portion between the process air inlet and the AAHX to selectively humidify the process air;
and
a make-up air unit arranged inside the second inside portion between the AAHX and the process air inlet, the make-up air unit comprising:
a damper to selectively introduce replenishment air into the flow of process air in the second inside portion between the AAHX and the process air outlet;
a filter to filter the replenishment air prior to introducing the replenishment air into the flow of process air;
and
a cooling component to selectively condition the replenishment air.

9 more elements

Dependencies are inferred from the claim text.

Integrated make-up air system in 100% air recirculation system

Life of this patent

Integrated make-up air system in 100% air recirculation system

Life of this patent

Abstract

Claims21