A thermosyphon system is a heat transfer loop which

\r\noperates on the basis of gravity and buoyancy forces. It guarantees a

\r\ngood reliability and low maintenance cost as it does not involve any

\r\nmechanical pump. Therefore, it can be used in many industrial

\r\napplications such as refrigeration and air conditioning, electronic

\r\ncooling, nuclear reactors, geothermal heat extraction, etc. But flow

\r\ninstabilities and loop configuration are the major problems in this

\r\nsystem. Several previous researchers studied that stabilities can be

\r\nsuppressed by using nanofluids as loop fluid. In the present study a

\r\nrectangular thermosyphon loop with end heat exchangers are

\r\nconsidered for the study. This configuration is more appropriate for

\r\nmany practical applications such as solar water heater, geothermal

\r\nheat extraction, etc. In the present work, steady-state analysis is

\r\ncarried out on thermosyphon loop with parallel flow coaxial heat

\r\nexchangers at heat source and heat sink. In this loop nanofluid is

\r\nconsidered as the loop fluid and water is considered as the external

\r\nfluid in both hot and cold heat exchangers. For this analysis onedimensional

\r\nhomogeneous model is developed. In this model,

\r\nconservation equations like conservation of mass, momentum, energy

\r\nare discretized using finite difference method. A computer code is

\r\nwritten in MATLAB to simulate the flow in thermosyphon loop. A

\r\ncomparison in terms of heat transfer is made between water and

\r\nnanofluid as working fluids in the loop.<\/p>\r\n","references":null,"publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 96, 2014"}