Abstract: A closed circulating water cooling apparatus includes an internal cooling apparatus, a plate heat exchanger, and an auxiliary cooling apparatus. The internal cooling apparatus comprises an internal cooling circulator pump and an air cooler. The auxiliary cooling apparatus comprises an external cooling circulator pump and an underground water pipe. Internal cooling water flowing through the plate heat exchanger from the internal cooling apparatus exchanges heat with external cooling water flowing through the plate heat exchanger from the auxiliary cooling apparatus. Utilization of the closed circulating water cooling apparatus and method allows for increased cooling capacity, when the environmental temperature is greater than the maximum inflow water temperature permitted by a piece of technical equipment, for the cooling apparatus to still provide sufficient cooling capacity, and for the equipment to obviate any water loss during operation.

Abstract: A circulative cooling system and a method for controlling the circulative cooling system are disclosed. The circulative cooling system is divided into three parts: an internal cooling circulation device, a plate heat exchanger and an external cooling circulation device. The internal cooling circulation device is adapted to perform circulation cooling on a heat-generating device; the plate heat exchanger is adapted to perform heat exchange between external cooling water in the external cooling circulation device and the internal cooling water in the internal cooling circulation device. The external cooling circulation device is adapted to cool the external cooling water. The external cooling primary circulation pump, the cold accumulation water pool, the water-air plate-wing heat exchanger, the cold accumulation air cooler, and the first valve and the second valve may be controlled.

Abstract: A closed circulating water cooling apparatus and method. The cooling apparatus comprises: an internal cooling apparatus, a plate heat exchanger, an ice thermal-storage auxiliary cooling apparatus. The internal cooling apparatus comprises an air cooler. The ice thermal-storage auxiliary cooling apparatus comprises an ice thermal-storage apparatus.

Abstract: A closed circulating water cooling apparatus and method. The cooling apparatus comprises: an internal cooling apparatus, a plate heat exchanger (6), and an auxiliary cooling apparatus. The internal cooling apparatus comprises an internal cooling circulator pump (2) and an air cooler (3). The auxiliary cooling apparatus comprises an external cooling circulator pump (7) and an underground water pipe (8). Internal cooling water flowing through the plate heat exchanger (6) from the internal cooling apparatus exchanges heat with external cooling water flowing through the plate heat exchanger (6) from the auxiliary cooling apparatus.

Abstract: A closed circulating water cooling apparatus and method. The cooling apparatus comprises: an internal cooling apparatus, a plate heat exchanger (7), an ice thermal-storage auxiliary cooling apparatus. The internal cooling apparatus comprises an air cooler (3). The ice thermal-storage auxiliary cooling apparatus comprises an ice thermal-storage apparatus (9). Internal cooling water flowing through the plate heat exchanger (7) from the internal cooling apparatus exchanges heat with external cooling water flowing through the plate heat exchanger (7) from the ice thermal-auxiliary cooling apparatus.

Abstract: A circulating cooling system and a method for controlling the circulating cooling system are disclosed in this disclosure. Wherein, the circulating cooling system is divided into three parts: an internal cooling circulation device, a plate heat exchanger and an external cooling circulation device, wherein the internal cooling circulation device is adapted to perform circulating cooling on a heat-generating device; the plate heat exchanger is adapted to perform heat exchange between external cooling water in the external cooling circulation device and the internal cooling water in the internal cooling circulation device; the external cooling circulation device is adapted to cool the external cooling water. Also, the external cooling primary circulation pump, the cold accumulation water pool, the water-air plate-wing heat exchanger, the cold accumulation air cooler, the first valve and the second valve may be controlled, respectively.

Abstract: The invention is to provide a chainless transmission mechanism comprising a first shaft connected to a pedal of the bicycle; a first bevel gear connected to the first shaft; a second shaft perpendicular to the first shaft, two ends of which are connected to a second bevel gear and a third bevel gear, respectively, the second bevel gear being matched with the first bevel gear to drive the second shaft; a fourth bevel gear mounted on an axle of a rear-wheel hub of the bicycle to engage with the third bevel gear; a ratchet clutch connected between the rear-wheel hub and the axle; and a connection member connected between the fourth bevel gear and the rear-wheel hub. A bicycle with the chainless transmission mechanism of the invention is of a simple manufacturing process and a lower cost.

Abstract: The invention is to provide a chainless transmission mechanism comprising a first shaft connected to a pedal of the bicycle; a first bevel gear connected to the first shaft; a second shaft perpendicular to the first shaft, two ends of which are connected to a second bevel gear and a third bevel gear, respectively, the second bevel gear being matched with the first bevel gear to drive the second shaft; a fourth bevel gear mounted on an axle of a rear-wheel hub of the bicycle to engage with the third bevel gear; a ratchet clutch connected between the rear-wheel hub and the axle; and a connection member connected between the fourth bevel gear and the rear-wheel hub. A bicycle with the chainless transmission mechanism of the invention is of a simple manufacturing process and a lower cost.