It’s not acceptable, she says, addressing the position of the serial owners who are building hospital after hospital, school after school.
Supply air/water temperature:.the design temperature the cabs/racks/CDU require during normal conditions..
Peak summer and yearly external temperatures:.the design temperature the external heat rejection equipment must be rated to, typically there will also be an additional allowance for recirculation for multi-unit installations (usually validated by an external CFD based on extreme temperatures and wind conditions)..In an ideal scenario, the peak summer design temperature would be lower than the required supply air/water temperature in the data hall.
This allows the data centre to rely solely on the heat rejection plant and no chillers - minimising energy consumption and resulting in low PUE values.PUE is dependent upon whether the heat rejection plant operates using adiabatic cooling..
However, for most data centres, peak summer temperatures exceed the required supply temperature.
This necessitates mechanical cooling to maintain design conditions.We created a logic flow to define how all the raw materials and assembled trusses moved through the system, depending on their types and other parameters..
Some aspects of the process were fixed, such as the quantity of welding stations and the routing of specific truss types (e.g.truss type A and B can be processed in welding station 1).
Others, for example the painting bays, were left as flexible station areas to allow recording of the capacity over time.. Other input data included:.truss parameters, such as type, dimensions, and other product data.