| 摘要 |
PURPOSE:To enable the measurement of heat flow distributed to each air conditioner with high precision in central air conditioning by calculating the heat flow consumed in each room from outputted values of electronic components. CONSTITUTION:The cold or hot water is supplied to air conditioners 6-8 in rooms 3-5 by a pump 2 from a water cooling and heating machine 1. Each conditioner is provided with constant flow valves 9-11, solenoid valves 12-14, inlet temp. sensors 15, 17, 19 and outlet temp. sensors 16, 18, and 20. For example, the outputs of the sensors 15 and 16 are supplied to an A/D converter 21, and the temp. difference is converted into digital quantities and supplied to a computing element 22. In the element 22, the consumed heat flow is measured from the flow rate of cold or hot water, the temp. difference between inlet and outlet and the service time. The result is indicated on an indicator 23. |
