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DEVICE FOR ESTIMATING FLOWRATE OF HEATING MEDIUM, HEAT SOURCE DEVICE, AND METHOD FOR ESTIMATING FLOWRATE OF HEATING MEDIUM
DEVICE FOR ESTIMATING FLOWRATE OF HEATING MEDIUM, HEAT SOURCE DEVICE, AND METHOD FOR ESTIMATING FLOWRATE OF HEATING MEDIUM
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机译:用于估计加热介质的流量的装置,热源设备以及用于估计加热介质的流量的方法
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摘要
The flow rate of a heat transfer medium is calculated without using a flow rate meter. A required-circulated-refrigerant flow-rate calculating portion (74) provided in a chilled-water flow-rate estimation calculation portion (70) calculates an evaporator exchanged heat quantity exchanged between a refrigerant and chilled water at an evaporator based on a planned chilled-water-flow-rate value and a measured value of the temperature of the chilled water flowing in the evaporator, and calculates an evaporator-refrigerant flow rate based on that evaporator exchanged heat quantity. Then, a circulated-chilled-water flow-rate back-calculating portion (78) back-calculates an evaporator-refrigerant flow rate based on the calculated evaporator-refrigerant flow rate and a ratio between a set value of differential pressure between a condenser and the evaporator and a measured value of that differential pressure, back-calculates an evaporator exchanged heat quantity exchanged between the refrigerant and the chilled water at the evaporator from the back-calculated evaporator-refrigerant flow rate, and back-calculates the flow rate of the chilled water based on the back-calculated evaporator exchanged heat quantity and the measured value of the temperature of the chilled water flowing in the evaporator.
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