Abstract: A method of evaluating and optimizing performance of a chiller system includes the following steps. Determine a number of activated chillers, a number of activated cooling towers, and the lowest outlet temperature of cooling water of a cooling tower as an operating settings. By developing evaluating models, sequentially determine a temperature of the cooling water entering the chillers, a total power consumption of chillers, a total power consumption of the cooling towers, and a total power consumption of pumping cooling water. Then, determine a total power consumption of the system by the sum of the total power consumption of the chillers, the total power consumption of the cooling towers, and the total power consumption of pumping cooling water. Through the above method, the system total power consumptions under different operating settings are evaluated, so as to determine an optimized operating setting to optimize the performance of the system.

Abstract: The present invention discloses a system of energy-efficient and constant-pressure fluid-transport machines coupled in parallel, which can flexibly and massively provide gas and water to every fabrication unit. The system of the present invention comprises: variable-frequency centrifugal fluid-transport machines, pressure gauges, power meters, flow meters, and controllers. The performance curves of the abovementioned system of fluid-transport machines coupled in parallel and the system impedance curves of the loads are analyzed theoretically and built in the controllers together with the equal-efficiency curves provided by the manufacturer. When the system is operating, the data detected by the pressure gauges, power meters, and flow meters are compared with the built-in data to obtain the optimal energy-efficient conditions as the operational criteria of the system of the present invention.

Abstract: A method of evaluating and optimizing performance of a chiller system includes the following steps. Determine a number of activated chillers, a number of activated cooling towers, and the lowest outlet temperature of cooling water of a cooling tower as an operating settings. By developing evaluating models, sequentially determine a temperature of the cooling water entering the chillers, a total power consumption of chillers, a total power consumption of the cooling towers, and a total power consumption of pumping cooling water. Then, determine a total power consumption of the system by the sum of the total power consumption of the chillers, the total power consumption of the cooling towers, and the total power consumption of pumping cooling water. Through the above method, the system total power consumptions under different operating settings are evaluated, so as to determine an optimized operating setting to optimize the performance of the system.

Abstract: The present invention discloses a system of energy-efficient and constant-pressure parallel-coupled fluid-transport machines, which can flexibly and massively provide gas and water to every fabrication unit. The system of the present invention comprises: variable-frequency centrifugal fluid-transport machines, pressure gauges, power meters, flow meters, and controllers. The performance curves of the abovementioned system of parallel-coupled fluid-transport machines and the system impedance curves of the loads are analyzed theoretically and built in the controllers together with the equal-efficiency curves provided by the manufacturer. When the system is operating, the data detected by the pressure gauges, power meters, and flow meters are compared with the built-in data to obtain the optimal energy-efficient conditions as the operational criteria of the system of the present invention.

Abstract: An apparatus for determining a flow rate of fluid substance discharged from a reserving device includes an instantaneous sensor for measuring an instantaneous state parameter of the fluid substance stored in the reserving device and a data processor electrically connecting with the instantaneous sensor for calculating the flow rate of the fluid substance according to the instantaneous state parameter. The reserving device includes a reservoir for storing the fluid substance, a controlling valve linked to the reservoir for adjusting the flow rate of the fluid substance, and a tube linked to the valve for transporting the fluid substance. The flow rate of the fluid substance is determined by an equation m .