Liebert Corporation

Emerson Network Power S.r.l.

Vertiv Corporation

Vertiv S.r.l.

Pierpaolo Barbato

Roger Noll

Gary A Helmink

Lou Monnier

Giuseppe Dalla Mana

John Francis Judge

Stephen C Sillato

Zhiyong Lin

Benedict J Dolcich

Daniel J Schutte

Timothy J Schrader

Greg Haggy

Thomas Harvey

Zongtao Lu

Alberto Ranzato

Stephen Sillato

A conditioning system of the free cooling type for environments and particularly for computing centers, which comprises:

Conditioning system of the free cooling type for environments, method of operation of a said conditioning system, and apparatus for carrying out such method

A conditioning unit of the indirect free cooling type, particularly for conditioning computing centers, of the type comprising: The conditioning unit comprises:

Conditioning unit of the indirect free cooling type, method of operation of such a conditioning unit, and apparatus for carrying out such method

A cooling system has a cabinet and a plurality of separate cooling stages including an upstream cooling stage and a downstream cooling stage. At least the upstream cooling state is a variable capacity cooling stage. Each cooling stage has a cooling circuit. Evaporators of the cooling circuits are arranged in the cabinet so that air passes over them in serial fashion. A controller when a Call for Cooling first reaches a point where cooling is needed, operating the upstream cooling circuit to provide cooling and not the downstream cooling circuit. When the Call for Cooling has increased to a second point, the controller additionally operates the downstream cooling circuit to provide cooling. The cooling capacity at which the upstream cooling circuit is being operated is less than its full capacity when the Call for Cooling reaches the second point.

High efficiency cooling system

A cooling system has a tandem compressor, a condenser, an electronic expansion valve and an evaporator arranged in a direct expansion cooling circuit. The tandem compressor includes a variable capacity compressor and a fixed capacity compressor. A controller controls the electronic expansion valve and selects which of a plurality of superheat control modes to use in operating the electronic expansion valve based on control parameters and a current operating status of each of the variable capacity compressor and fixed capacity compressor of the tandem compressor.

Cooling system with tandem compressors and electronic expansion valve control

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Noventa Padovana, Italy

Pierpaolo Barbato