Experimental study of a novel heat sink for distribution level static synchronous compensator cooling
- PDF / 4,709,527 Bytes
- 12 Pages / 595.276 x 793.701 pts Page_size
- 28 Downloads / 179 Views
perimental study of a novel heat sink for distribution level static synchronous compensator cooling *
CHEN Hao & LI Qiang
MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science & Technology, Nanjing 210094, China Received February 15, 2020; accepted April 14, 2020; published online July 14, 2020
In this paper, a novel heat sink which coupling natural convection and phase transition was designed to meet the cooling requirements of distribution level static synchronous compensator (DSTATCOM). The two inclined evaporation substrates can meet the requirements for the parallel operation of DSTATCOM and the working medium R245fa was driven by gravity and buoyancy in the heat sink. The influence of filling ratio and heating power on the thermal performance of the heat sink was investigated experimentally and theoretically. The experimental results showed that the filling ratio and heating power had a significant influence on the thermal performance of the heat sink. At the ambient temperature of 25°C, the heat sink could start up successfully at different heating power and filling ratio. Meanwhile, the heat sink achieved good heat dissipation performance as the maximum temperature of two evaporation substrates were 60.14°C and 67.85°C while the heating power was 3000 W and the filling ratio was 80%. The heat transfer resistance between two evaporation substrates and condensation substrates were −3 −2 6.6×10 °C/W and 1.2×10 °C/W at the same working condition. Additionally, the experimental results showed a good agreement with the calculated results. natural convection, phase transition, thermal performance, maximum temperature, heat transfer resistance Citation:
Chen H, Li Q. Experimental study of a novel heat sink for distribution level static synchronous compensator cooling. Sci China Tech Sci, 2020, 63, https://doi.org/10.1007/s11431-020-1601-1
1 Introduction With the development of power technology, distributed generation (DG) has been connected to the power system widely, which led to a rapid increase of DG application in distribution systems. Its impact on the power system should be considered such as higher requirements for the utilization of reactive power and power quality. Therefore, distributed reactive power compensation equipment with high power and high energy density such as DSTATCOM has become increasingly widely used. In order to satisfy the increasing demand of large reactive current compensation in various data center power supply systems, the DSTATCOM develops *Corresponding author (email: [email protected])
towards miniaturization and modularization and this trend puts forward higher requirements for the heat dissipation. At present, forced air cooling is the commonly used heat dissipation method for DSTATCOM. However, the disadvantages of large noise, short service life and large maintenance workload of the fan used for forced air cooling are becoming increasingly prominent. In this condition, natural convection is c
Data Loading...
