Conveners
Heat Transport
- Paula Prado Montes
Heat Transport
- Paolo Ruzza (ESA)
Heat Transport
- Paolo Ruzza (ESA)
Based on the electrohydrodynamic (EHD) technology mastered by APR Technologies, a Swedish SME, the core of APR's space products is a small-sized patented liquid EHD pump. This pump enables very deterministic and fast regulation of fluid flow, thereby controlling thermal conductance between thermal interfaces in active thermal control systems. Its main advantage is its operation across a wide...
In modern times, the rapid growth in the volume of data and the needs for global connectivity are major technological challenges. At this point, satellite technology attempts to respond to various demands, ranging from guaranteeing internet access in remote regions to national security missions. The growing demand for satellite devices and the expectation regarding the tasks assigned to this...
The accurate temperature regulation of system or sub-system is a key enabler for space scientific missions, especially when observation instruments are considered. The thermal management of optical technologies are critical and may require a fine temperature control with accurate stability, and a homogeneous temperature field. Thermal buses composed by CCHPs and VCHPs propose high reliability...
Single evaporator heat loops (HL: LHP, CPL, etc.) are well-studied two-phase heat transfer devices, both theoretically and through many applications in spacecraft thermal management. Classical HL are well suited for operation with concentrated heat sources. However, collection of heat from a wide flat area by HL evaporator comes at a cost of using additional interfaces (saddles, embedded heat...
Extruded Aluminum grooved heat pipes are the most widely used components for the thermal management of spacecrafts, including high performance, high reliability level with large space flight heritage and market availability. This technology is designed and optimized to operate in micro-gravity and the gravity effects on Earth and during lunar or planetary missions significantly affect the...
Heat pipes are conventionally used for spacecraft thermal control. A well-designed heat pipe provides a reliable thermal link that transports large quantities of heat at nearly isothermal conditions, varying its working temperature and pressure within its design range to adapt to the conditions of the heat source and sink. However, heaters are often used in the cold non-operational phase to...
Designing efficient cooling devices is crucial in a multitude of applications. Although advanced cooling technologies have existed for decades, there is still a lack of more efficient heat dissipation methods, especially for space applications where thermal management devices must dissipate heat in reduced gravity. Flow boiling presents here a first significant improvement over traditional...
The oscillating heat pipe (OHP) is an emerging passive heat transport technology for 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 in a capillary channel to pump liquid and vapor between the heat sources and heat sinks. This design enables the OHP to be...
Two-phase cooling systems are relying on the high efficiency of the fluid phase change to store and transport the heat (latent heat). The operation of these systems needs to control the saturation conditions with very high accuracy and without discrepancy during the lifetime of the cooling system. This lifetime can be from 5 years up to 20 years or more, including storage and operation time....
