| 摘要 |
PURPOSE:To ensure the stability of a circulating loop, the improvement of heat efficiency and reduction of operation cost, by connecting successively plural heaters in series to a high-pressure pump and switching alternately two circuits connected to a pressure container through the heater. CONSTITUTION:A test piece 2 stored in a restricted state within a pressure container 1 is tested by means of a fluid of a high temperature and high pressure. A front-stage heater 5a of a comparatively low temperature and a rear-stage heater 5b of a comparatively high temperature are connected in series to a cooler 6, a tank 3 and a high voltage pump 4, respectively. The following two circuits are formed by switching alternately an inflow-side switch valve 8, an outflow-side switch valve 9 and a by-pass switch valve 10, respectively. That is, a route of the tank 3 heater 5a heater 5b (reheating) container 1, and another route of the heater 5a container 1 heater 5b cooler 6, respectively. As a result, two circulating routes of high and low temperatures can be formed with just a single circuit. Thus a fluid of a low temperature side is reheated and then shifted to a high temperature side. This process improves the heat efficiency. Furthermore, no fluctuation is produced to the pressure temperature and the flow rate of a fluid owing to a single series circuit. This process increases the stability of a circulating loop. |
