Water-based phase-change cold storage device under microgravity

Abstract

The invention provides a water-based phase-change cold storage device under microgravity, relates to the field of phase-change energy storage, and can be applied to a temperature control system in an extreme environment such as a spacecraft. A shell of the cold storage device is provided with a circulating liquid inlet and outlet, and a plurality of micro-pipes are closely arranged in the cold storage device and connected to the circulating liquid inlet and outlet. The peripheral space of a micro-pipe heat exchange section is sealed by a layer of elastic liquid bag, and the micro-pipes, the liquid bag and a cold storage medium sealed inside form multiple cold storage subunits with independent spaces. A layer of net rack is attached to the outer surface of the liquid bag, and the micro-pipes, the liquid bag and the net rack are kept in the coaxial positions and form a compact honeycomb structure. Throttling teeth are arranged at the two ends of the liquid bag and the two ends of the micro-pipes and mesh with each other to achieve the labyrinth sealing effect, and expansion joints of corrugated structures are arranged at the two ends of the micro-pipes. Micro fins are arranged in the sealing positions of the micro-pipes and the liquid bag. According to the water-based phase-change cold storage device under microgravity, the problems that a cold storage device is low in cold storage efficiency, prone to leakage and the like in the extreme environment can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of phase change energy storage, in particular to a water-based phase change cold storage device under microgravity. Background technique [0002] The thermal control of spacecraft is one of the key technologies to ensure the safe and stable operation of spacecraft. The orbiting spacecraft needs to continuously and periodically experience a thermal environment with a huge temperature difference near the perihelion and aphelion, and the operating temperature range of the electronic equipment in the spacecraft is basically -15 to 50 °C. Therefore, it is crucial to provide continuous, stable and sufficient thermal control for the spacecraft. When the radiation radiator cannot satisfy thermal control, it is necessary to assist temperature control through additional methods such as phase change cold storage devices and heat pumps. [0003] The phase change cold storage device is essentially one of the phase chan...

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problems of low cold storage efficiency, large space occupation, and serious leakage caused by the volume expansion of the cold storage medium in the existing cold storage device, the present invention provides a phase change cold storage device applied to spacecraft to meet the needs of long-term service in the spacecraft. Temperature control in extreme environments such as gravity, large temperature difference, strong radiation, and vacuum

Images