Micro Heat Exchanger with a Novel Sintered Ni Microfibrous Structured Wick and Its Performance

Ni micro-fiber used sintering porous structural material (Ni-defibrillators) of the micro-heat exchanger, heat transfer and flow of their properties have been studied, inspected the micro-structure of heat exchangers and heat transfer coefficient resistance movement of the impact test The results show that the fiber-filled Ni could significantly strengthen the micro-heat exchanger performance, than the air flow under the same conditions, the size of micro-heat exchanger heat transfer coefficient increased 2 times more; Ni-defibrillators to reduce the porosity and by Small flow depth can significantly improve the micro-heat exchanger performance, but the result of the heat exchanger to increase pressure drop;Use of high thermal conductivity and thickness of the small copper heat exchanger film will help improve the micro-heat exchanger performance. Ni micro-fiber porosity of 95.1 percent, flow depth of 0.3 mm, heat transfer copper film thickness of 0.1 mm, water The volume of traffic to 14.6 L / h, the size of micro-heat exchanger heat transfer coefficient of up to 40.0 MW / (m3 K), heat transfer coefficient of up to 20 kW / (m2 K), pressure drop of about 0.2 MPa.