Abstract: The present invention discloses a high-temperature fluid transporting pipeline with a heat exchange apparatus installed therein, a suitable heat exchange apparatus and a heat exchange method, wherein heat contained in a high-temperature fluid can be recovered during the transportation thereof. The heat exchange apparatus comprises a heat exchange body inserted into the high-temperature fluid transporting pipeline, and a heat-receiving fluid coil installed therein. The method of heat exchange is that the high-temperature fluid heats an auxiliary fluid in a heat exchange cavity via a heat exchange panel of the heat exchange body in contact therewith, and the heated auxiliary fluid then conducts the heat to a heat-receiving fluid in the heat-receiving fluid coil.

Abstract: A method for preserving Ziziphus jujuba, including: 1) preservation treatment of the Ziziphus jujuba harvested by a) fumigation and b) soaking the Ziziphus jujuba in a liquid preservative at room temperature; 2) air-drying the soaked Ziziphus jujuba and placing it into polyethylene bags, and then placing the Ziziphus jujuba into an inner atmosphere of a jacketed cold and controlled atmosphere storage warehouse and cooling it at 4° C. for 24-48 hours; and after slowly reducing the temperature of the inner atmosphere to ?3.0±0.1° C. over a period of 6 days, closing off the inner atmosphere and controlling its composition. During the cooling step, air is circulated between the inner atmosphere and the outer atmosphere of the jacketed cold and controlled atmosphere storage warehouse.

Abstract: A method for preserving Ziziphus jujuba, including: 1) preservation treatment of the Ziziphus jujuba harvested by a) fumigation and b) soaking the Ziziphus jujuba in a liquid preservative at room temperature; 2) air-drying the soaked Ziziphus jujuba and placing it into polyethylene bags, and then placing the Ziziphus jujuba into an inner atmosphere of a jacketed cold and controlled atmosphere storage warehouse and cooling it at 4° C. for 24-48 hours; and after slowly reducing the temperature of the inner atmosphere to ?3.0±0.1° C. over a period of 6 days, closing off the inner atmosphere and controlling its composition. During the cooling step, air is circulated between the inner atmosphere and the outer atmosphere of the jacketed cold and controlled atmosphere storage warehouse.