Abstract
OCCSS (Open-Closed Cycle Switching System), which consists of two TS (Temporary Storage)-tanks and two switches, forms an open circuit with a TS-tank and an open heat storage tank and a closed circuit with another one and heat loads side. Storing ice to TS-tank in open circuit and drawing ice/water mixture from that and then replacing TS-tanks each other by manipulating two switches, a combination of OCCSS and open-type dynamic ice storage tank makes it possible to transport ice/water mixture to load side in closed circuit. The method to store ice to the TS-tank and to draw ice/water mixture from that was proposed in previous paper. And then it was shown that storing and drawing processes proposed were practical experimentally. An auxiliary chamber is installed at the top of the TS-tank to draw ice/water mixture with ease in this system. Experiments were conducted under the conditions of non-full charged state in storing processes. Because ice flowed into the auxiliary chamber in storing processes prevents drawing ice/water mixture from the TS-tank. In this paper, two types of ice/water supplying ports and of baffle plates were proposed to prevent ice flowing into the auxiliary chamber and each performance was examined. Not using water wheel as in previous paper, an ice mass was rotated by a motor directly to conduct experiments at constant rotating rate of the ice mass. Experiments were conducted by changing the flow rates of ice/water mixtures and flow pattern in the TS-tank were observed. Also the IPF of ice/water mixture flowed into and drawn from the TS-tank were measured. In drawing processes, the ice mass rotated by the motor is smashed by the horizontal jet stream ejected from the top of the ST-tank with changing the number of jet streams and its flow rates. It was found that the combination of inverse circular cone type ice/water supplying port and three leaves type baffle plate was effective to form homogeneous ice mass and to control fluctuation of IPF drawn from the TS-tank. Also it was obtained that high position of ice/water supplying port and increase of supplying flow rate increased quantity of ice stored.
