Effect of nanofluid on thermal performance of heat pipe with two evaporators; application to satellite equipment cooling

Mashaei, Payam Rahim; Shahryari, Mehran

doi:10.1016/j.actaastro.2015.02.003

Cited by 36 publications

(5 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are several limiting factors for the thermal performance of a heat pipe on which attention of researcher is aimed: optimization of the fins shape [6], adding of nanoparticles in conventional fluids [7], accurate study of evaporation phenomena [8]. The pumping performance of the capillary pump is determined by the pore diameter of the porous material and the dimensions of the evaporator.…”

Section: Introductionmentioning

confidence: 99%

Composite structures with gradient of permeability to be used in heat pipes under microgravity

et al. 2015

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Composite structures with gradient of permeability to be used in heat pipes under microgravity

et al. 2015

View full text Add to dashboard Cite

“…Thermal design relies on active or passive temperature control devices. The active thermal control devices [4] include pumped loop systems, heaters, shape memory alloy (SMA) [5], and louvers [6]. Small satellites usually have limited size and mass, so it is difficult to use active thermal control devices widely [2,7].…”

Section: Introductionmentioning

confidence: 99%

“…Passive thermal control system refers to the use of the conduction and radiation characteristics of materials to autonomously control the temperature. Materials often used for passive thermal control include multilayer insulation, coatings/paints, mirror, radiating sur-faces, thermal grease, and polyimide structure [4,6,[8][9][10]. In addition, the passive thermal control system does not require an additional power source, which can save the power of the satellite [11].…”

Section: Introductionmentioning

confidence: 99%

Thermal Design and Verification of Spherical Scientific Satellite Q-SAT

Wang

et al. 2021

International Journal of Aerospace Engineering

View full text Add to dashboard Cite

Small satellites have gradually become an important mean of space scientific exploration. The Tsinghua University developed a spherical small satellite, Q-SAT, which is aimed at detecting the Earth gravity and atmosphere parameters. In the current paper, thermal control for Q-SAT is discussed. For heat exchange between the satellite and the environment, radiation plays the main part. Different from traditional cuboid satellites, the current spherical satellite has no individual heat input and output plane which brings challenges to the thermal design of the satellite. In addition, the cost of small satellites is required to be as low as possible. A passive thermal control solution based on integrated spherical structure is employed on the Q-SAT. The combination of two integrated hemispheres is designed to facilitate the heat conduction. Different materials are utilized to control the heat transfer path. Firstly, a set of numerical simulations demonstrate that the current design can be well adapted to complex flight environment. Next, the thermal design is verified by thermal tests. As the traditional heat radiation lamps cannot meet the test requirements of the spherical satellite, an external heat flow test method which is based on distributed heaters is proposed. Results from numerical simulations agree well with the experimental test results. Both results show that the thermal system can guarantee the functions of the satellite. Q-SAT was successfully launched into orbit on August 6, 2020. The telemetry data from Q-SAT verified the effectiveness of the satellite thermal system. The thermal design and test method proposed in present paper can potentially be adopted to other small scientific satellites as well.

show abstract

“…As a common structure in the spacecraft industry, thin-walled piping has been widely used for applications such as cooling the base station on a communication satellite and avoiding overheating of charge-coupled devices on a space telescope [ 1 , 2 , 3 , 4 , 5 ]. Therefore, fatigue damage estimation of thin-walled structures is critical to guarantee operational reliability.…”

Section: Introductionmentioning

confidence: 99%

A New Approach for Fatigue Reliability Analysis of Thin-Walled Structures with DC-ILSSVR

Dai

et al. 2021

Materials

View full text Add to dashboard Cite

Fatigue analysis is of great significance for thin-walled structures in the spacecraft industry to ensure their service reliability during operation. Due to the complex loadings of thin-walled structures under thermal–structural–acoustic coupling conditions, the calculation cost of finite element (FE) simulations is relatively expensive. To improve the computational efficiency of dynamic reliability analysis on thin-walled structures to within acceptable accuracy, a novel probabilistic approach named DC-ILSSVR was developed, in which the rotation matrix optimization (RMO) method was used to initially search for the model parameters of least squares support vector regression (LS-SVR). The distributed collaborative (DC) strategy was then introduced to enhance the efficiency of a component suffering from multiple failure modes. Moreover, a numerical example with respect to thin-walled structures was used to validate the proposed method. The results showed that RMO performed on LS-SVR model parameters provided competitive prediction accuracy, and hence the reliability analysis efficiency of thin-walled pipe was significantly improved.

show abstract

Effect of nanofluid on thermal performance of heat pipe with two evaporators; application to satellite equipment cooling

Cited by 36 publications

References 33 publications

Composite structures with gradient of permeability to be used in heat pipes under microgravity

Composite structures with gradient of permeability to be used in heat pipes under microgravity

Thermal Design and Verification of Spherical Scientific Satellite Q-SAT

A New Approach for Fatigue Reliability Analysis of Thin-Walled Structures with DC-ILSSVR

Contact Info

Product

Resources

About