Abstract: Disclosed techniques include energy storage and buffering using multiple pressure containers. Liquid and gas are pumped into a subterranean container. The liquid and gas are pressurized in the subterranean container. A pump is coupled to the subterranean container to accomplish the pressurizing of the subterranean container. The pump and the subterranean container are coupled to an above-ground pressure vessel. The above-ground pressure vessel is pressurized using the pump. The above-ground pressure vessel receives excess flow from the pump beyond the flow provided to the subterranean container. The above-ground pressure vessel provides buffering for pressure flowing into or out of the subterranean container. The gas includes air and the liquid includes water. Pressure is extracted from the first subterranean container to drive a turbine. The pressure from the above-ground pressure vessel supplements pressure from the subterranean container to drive the turbine at a substantially constant rate.

Abstract: The invention provides a computer simulation system for simulating a data centre. The simulation system uses a logical representation of the data centre to perform the simulation. This logical representation includes a plurality of nodes representing devices in the data centre. Each node has an input for applied load and outputs for electrical power drawn and losses in the form of heat output. Each node also has a function for calculating the outputs from the inputs. A first set of connections between the nodes represent electrical power drawn by one device in the data centre from another device in the data centre. A second set of connections between the nodes represent a thermal load applied by one device in the data centre to another device in the data centre. The simulator can be run for a series of different operating conditions to map data centre efficiency, for example, or to assess the impact of different IT devices on the data centre.

Abstract: The invention provides a computer simulation system for simulating a data centre. The simulation system uses a logical representation of the data centre to perform the simulation. This logical representation includes a plurality of nodes representing devices in the data center. Each node has an input for applied load and outputs for electrical power drawn and losses in the form of heat output. Each node also has a function for calculating the outputs from the inputs. A first set of connections between the nodes represent electrical power drawn by one device in the data center from another device in the data center. A second set of connections between the nodes represent a thermal load applied by one device in the data center to another device in the data center. The simulator can be run for a series of different operating conditions to map data center efficiency, for example, or to assess the impact of different IT devices on the data center.

Abstract: The invention provides a computer simulation system for simulating a data centre. The simulation system uses a logical representation of the data centre to perform the simulation. This logical representation includes a plurality of nodes representing devices in the data centre. Each node has an input for applied load and outputs for electrical power drawn and losses in the form of heat output. Each node also has a function for calculating the outputs from the inputs. A first set of connections between the nodes represent electrical power drawn by one device in the data centre from another device in the data centre. A second set of connections between the nodes represent a thermal load applied by one device in the data centre to another device in the data centre. The simulator can be run for a series of different operating conditions to map data centre efficiency, for example, or to assess the impact of different IT devices on the data centre.

Abstract: The invention provides a computer simulation system for simulating a data centre. The simulation system uses a logical representation of the data centre to perform the simulation. This logical representation includes a plurality of nodes representing devices in the data centre. Each node has an input for applied load and outputs for electrical power drawn and losses in the form of heat output. Each node also has a function for calculating the outputs from the inputs. A first set of connections between the nodes represent electrical power drawn by one device in the data centre from another device in the data centre. A second set of connections between the nodes represent a thermal load applied by one device in the data centre to another device in the data centre. The simulator can be run for a series of different operating conditions to map data centre efficiency, for example, or to assess the impact of different IT devices on the data centre.