Blended operation mode for providing cooling to a heat load

The conditioning system of claim I wherein the fluid transmission and retention device includes a manifold comprising:

• a main conduit connected to the EC inlet and the heat load, the main conduit configured to supply the cooling fluid to the heat load;
• an EC conduit connected to the RC outlet and the main conduit;
• a first RC conduit connected to the RC outlet and the main conduit;
• a second RC conduit connected to the RC outlet and the main conduit;
• and
• a pressure regulation device to control a pressure of the cooling fluid at the EC outlet,
• wherein the cooling fluid supplied to the heat load comprises at least one of:
• substantially all of the cooling fluid from the RC outlet and substantially none of the cooling fluid from the EC outlet,
• substantially none of the cooling fluid from the RC outlet and substantially all of the cooling fluid from the EC outlet, and
• a mixture of the cooling fluid from the RC outlet and the cooling fluid from the EC outlet.

A method of controlling operation of a conditioning system configured to provide cooling to a heat load, the conditioning system having an evaporative cooler and a downstream recovery coil arranged inside a scavenger plenum configured to direct scavenger air from an air inlet to an air outlet, the method comprising:

• selectively directing scavenger air through the evaporative cooler depending on environmental conditions, wherein the evaporative cooler circulates water through the evaporative cooler during operation of the evaporative cooler;
• directing the scavenger air through the recovery coil, wherein the recovery coil circulates water through the recovery coil;
• directing discharge water exiting the evaporative cooler at an EC outlet into a fluid transmission and retention device;
• directing return water exiting the recovery coil at an RC outlet into the fluid transmission and retention device;
• selectively directing water from the fluid transmission and retention device to the heat load via a first pump fluidically connected to the fluid transmission and retention device;
• and
• selectively directing water from the fluid transmission and retention device to the evaporative cooler via the second pump fluidically connected to the fluid transmission and retention device.

A conditioning system configured to provide cooling to a heat load and operable in a plurality of operating modes, the conditioning system comprising:

• a scavenger plenum configured to direct scavenger air from an air inlet to an air outlet;
• an evaporative cooler arranged inside the scavenger plenum and configured to circulate a cooling fluid from an EC inlet through the evaporative cooler to an EC outlet and to exchange energy between the cooling fluid and the scavenger air;
• a recovery coil arranged inside the scavenger plenum between the evaporative cooler and the air outlet and configured to circulate the cooling fluid from an RC inlet through the recovery coil to an RC outlet and to exchange heat between the cooling fluid and the scavenger air;
• and
• a manifold configured to distribute the cooling fluid from at least one of the EC outlet and the RC outlet to at least one of the EC inlet and the heat load based on the operating mode and environmental conditions, the manifold comprising:
• a main conduit fluidically connected to the EC inlet and the heat load;
• an EC conduit fluidically connected to the EC outlet and the main conduit;
• a first RC conduit fluidically connected to the RC outlet and the main conduit;
• a second RC conduit fluidically connected to the RC outlet and the main conduit, the EC conduit connected to the main conduit between the connection of the first RC conduit to the main conduit and the connection of the second RC conduit to the main conduit;
• a flow control device variably distributing the cooling fluid from the RC outlet to one or both of the first and second RC conduits;
• and
• a pressure regulation device to control a pressure of the cooling fluid in the evaporative cooler.