HP Modular Cooling System Manual de Instalação descarregar pdf (Página 50)

Figure 34: Flow rate versus delta pressure (water control valve fully open)

A minimum water pressure difference of 1.0 to 1.5 bar (15 to 20 psi) between facility supply and

return is required. Figure 34 gives the pressure difference with a fully opened control valve. In

operation the control valve is maintaining the water flow to the MCS 5042 by introducing pressure

resistance to reduce the flow to accommodate different water temperatures and cooling capacity. This

way the pressure loss in operation appears higher than shown in Figure 34. But to have the full scale

of water flow available, the provided system pressure difference must be slightly higher than the

maximum pressure loss with a fully opened control valve.

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HP Modular Cooling System Manual de Instalação Página 50