A review on heat transfer characteristics of cryogenic heat pipes
网页2021年6月23日 · Hydrogen, neon and nitrogen are among the most attractive working fluids for heat pipes in order to reach efficient heat transfer in cryogenic conditions. According to the reviewed studies on cryogenic heat pipes, similar to the medium or high-temperature heat pipes, their thermal performance depends on …
网页Outline. Traditional LHP for Spacecraft Applications. Technical Challenges in CLHP Development. Advanced CLHP with a Secondary Evaporator and a Hot Reservoir. Operational Principles. An Example: Hydrogen CLHP. Summary and Conclusions. Traditional Loop Heat Pipe. Application. Transport heat from a heat source to a heat sink over a large distance.
Heat pipe based systems - Advances and applications
网页2017年6月1日 · Cryogenic heat pipes consider any heat pipe system which can operate at temperatures below −70 °C, while low temperature heat pipes have a typical operating temperature between −70 and 270 °C. The working fluid can be either an organic fluid with short carbon chains such as methanol and ethanol, or …
Development of cryogenic loop heat pipes: A review and …
网页2015年10月5日 · This work provided a comprehensive review of the state-of-the-art of cryogenic loop heat pipes (CLHPs). Five different types of CLHPs were categorized, and a comparative analysis between CLHPs and ambient LHPs and among different types of CLHPs was conducted.
网页The technology research and development began first with a Nitrogen LHP in 1993 and a Nitrogen CPL in 1998 to be followed by the successful demonstration of Cryogenic Advanced Loop Heat Pipes (C-ALHP) utilizing Nitrogen, Oxygen, Neon, and Hydrogen as the working fluid.
Cryogenic Heat Pipes for Thermal Management
网页2019年2月7日 · Cryogenic heat pipes are specialized passive thermal management devices designed to transfer heat efficiently at low temperatures, typically below -150°C (-238°F). These heat pipes, like room temperature heat pipes, leverage the principles of phase change and capillary action to move heat from one area to …
A Novel Cryogenic Loop Heat Pipe Structure and Preliminary
网页2023年10月6日 · Due to their advantages of high heat transfer efficiency, high flexibility, and flexible arrangement, loop heat pipes have become an effective way of cryogenic heat transfer in space. However, researches on cryogenic loop heat pipes (CLHP) are mainly experimental studies in the liquid nitrogen temperature zone, and …
Development of cryogenic loop heat pipes: A review and …
网页2015年10月5日 · Neon-charged cryogenic loop heat pipe (CLHP) can realize efficient cryogenic heat transport in the temperature range of 30–40 K, and promises great application potential in the thermal control of future space infrared exploration system. In this work, extensive experimental studies on the supercritical startup …
网页In this paper, the development of cryogenic loop heat pipes (CLHPs) will be reviewed in detail, and the operating principle and characteristics as well as the application fields of each type of CLHP will be comparatively analyzed. This will form understanding of the principal differences among different types
网页LOOP heat pipe (LHP) is a very versatile heat transfer device which can transport a large heat load over a long distance with a small temperature difference [1-3]. It utilizes boiling and condensation of the working fluid to transfer heat, and the surface tension forces of menisci formed at the liquid/vapor interfaces on the porous wick to