Conveners
Heat Transport
- Victor Cleren (ESA)
Heat Transport
- Paula Prado Montes
Heat Transport
- Paolo Ruzza (ESA)
Heat Transport
- Paolo Ruzza (ESA)
Loop Heat Pipes (LHPs) are considered advantageous thermal management systems for various types of spacecraft, capable of transferring heat from source to sink in microgravity with low temperature drop, no external power input, and typical lifetimes of up to 15 years. However, as communication satellites evolve into the high-throughput and very-high-throughput categories, the need arises to...
Pulsating heat pipes (PHPs), also known as oscillating heat pipes, are passive heat transport devices characterized by ease of construction, low mass, ability to function as efficient heat switch, multi-fold times higher effective thermal conductivity than metallic counterparts and gravity-independent thermal performance. The on-orbit long-term reliability and operation of room temperature (or...
To meet customer’s needs, new payloads are needed such as digital payload. These payloads reshape totally the accommodation of S/Cs and thus the philosophy of its thermal control. The new dissipative units are more numerous and dissipative as well as often far away from cold source. This represents a new constraint for the design of future LHP product as the pipework is foreseen to be more...
Spacecraft such as lunar rovers need to control onboard temperatures within an allowable range in response to the large temperature changes between day and night on the lunar surface. The high temperatures during the day require a large enough radiator to dissipate heat from the equipment, which takes a high heat transport capacity. On the other hand, equipment with the same heat transport...
The LHP100K project focuses on the following temperature range of interest: 100-150 K. It encompasses the current NIR/SWIR detector operational temperature as well as the future MWIR one that could work around 100-120 K (Figure 1). Above all, this project aimed at designing, building and testing a breadboard (BB) of a LHP suitable for these uses. The whole project has been divided into 4 main...
Exploration missions have to cope with stringent reliability requirements, large thermal rejection needs and complex attitude with respect to sun orientation. The common solution for large dissipation systems is a single mono-phasic Mechanical Pumped Loop (MPL) running from the cabin/equipment to external piping lined radiators. These systems face redundancy and reliability issues due to their...
The roll-out of highly dissipative active antennas is now a major and critical challenge which requires efficient thermal control systems. However, the collection and transport of the dissipated power are a tough problem because of several severe constraints: high heat flux density, high number of sources, high total power and complex accommodation. Several two-phase solutions are already used...
With the continuous growth in power demands across space applications, the need for efficient thermal management solutions becomes crucial, spanning a wide range of spacecrafts from large GEO to small LEO satellites as well as deep space exploration and lunar missions. In this context, the design of thermal management systems emerges as a challenge to face to ensure the reliability,...
In the context of the ESA tender "Thermally Enhanced Power Unit Housing using Embedded Two-Phase Technology, ARTES Advanced Technology”, a consortium composed by the Energy (prime) and Mechanical Engineering departments of Politecnico di Milano, Leonardo S.p.A., BeamIT S.p.A. and Apogeo Space S.r.L. has worked on project HPS2 (Heat Pipe Solutions for High Power Systems), aimed at developing an...
Miniaturization and thermal management of electronic systems are critical challenges in spacecraft design. EHP aims to develop a standardized, lightweight, and efficient two-phase cooling solution for high-density electronic boxes (E-Boxes).
EHP proposes a modular concept combining additive manufacturing and porous structures properties, allowing to dissipate at least 10W on any place of a...
The oscillating heat pipe (OHP), also called pulsating heat pipe (PHP), is a high-performance passive heat transport technology with a wide range of applications in satellite thermal management. The OHP is similar to other heat pipes in that it uses a saturated fluid to transport heat; however, its operational mechanism relies on bubble nucleation within a capillary channel to drive...
An electrohydrodynamic (EHD) pump for Pumped Loop applications has been developed by APR Technologies, a Swedish SME, and has been demonstrated in an engineering model loop. The pump provides sufficient pumping power for smaller pumped loops, with a power consumption below 4 W in ON mode and no power consumption in OFF mode. As the pump has no moving parts, it experiences no mechanical wear...
