| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure abnormality predicting apparatus for a heat exchanger, capable of predicting pressure abnormality of a heat exchanger mounted in a cooling device for an air-cooled heat pump, etc. SOLUTION: A pressure abnormality predicting apparatus for a heat exchanger includes a compressor 1, an air side heat exchanger 2 for effecting heat exchange between a heat-exchanging medium fed from the compressor 1 and air, an expansion valve 3, and a water side heat exchanger 4 for effecting heat exchange between the heat-exchanging medium fed through the expansion valve 3 and water. This apparatus predicts pressure abnormality of the heat exchangers on the basis of detection outputs produced from temperature sensors 16, 17 provided at the inlet of the air side heat exchanger 2 and at the inlet of the water side heat exchanger 4, respectively, and detection outputs produced from liquid temperature sensors 18, 19 for the heat-exchanging medium, which are provided at fore and rear portions of the expansion valve 3, respectively, in addition to a detection output produced from a pressure sensor 14 which detects pressure at an outlet pipe of the compressor 1. |
