Title of Document: DEVELOPMENT OF AN ADVANCED HEAT EXCHANGER MODEL FOR STEADY STATE AND FROSTING CONDITIONS Varun Singh Doctor of Philosophy, 2009 Directed By: Reinhard Radermacher, Professor Department of Mechanical Engineering Air-to-refrigerant fin-and-tube heat exchangers are a key component in the heating, air conditioning and refrigeration industry. Considering their dominance, the indust...

Hampir seluruh proses produksi dan aktifitas manusia berhubungan dengan energi. Dengan meningkatnya kebutuhan energi maka diperlukan suatu usaha untuk melakukan efisiensi pada tersebut. Heat exchanger adalah alat yang digunakan dalam perpindahan panas fluida lain tanpa terjadi massa dapat dipergunakan sebagai pemanas maupun pendingin. Salah satu jenis heat sering di industri shell and tube exch...

Shell-and-tube heat exchangers are widely used in many research fields and industrial production processes, but little has been conducted on the use of for drying crops. This study a numerical simulation temperature, velocity, pressure based shell-and-tube fluids exchanger biomass particle hot-blast stove. The correctness results was verified by test data before simulation, mesh to be irrelevan...

Nowadays, heat exchangers with twisted-tape inserts have widely been applied for enhancing the convective heat transfer in various industries such as thermal power plants, chemical processing plants, air conditioning equipment, refrigerators, petrochemical, biomedical and food processing plants. In general, twisted tape insert introduces swirl into the bulk flow which consequently disrupts a th...

Abstract To enhance the heat transfer efficiency of spiral wound exchanger, a grooved exchanger (GSWHE) was proposed. A test platform accomplished to experimentally investigate performance with comparison (SWHE). The uncertainty analysis experiment conducted, maximum relative error being not more than ±5%. comprehensive coefficient GSWHE is higher that SWHE when cooling water flow rate low. det...

This paper presents a comprehensive and exclusive thermodynamic analysis of counter flow heat exchanger under various operating and geometrical conditions. Analysis system (ANSYS) workbench 14.0 has been used for computational analysis and comparison with previous literature has been carried out in view of variable temperature and mass flow rate of hot and cold fluids. An analytical and statist...

In this paper, we present experimental investigation of convective heat transfer characteristic in the inner tube fluid of miniature concentric double tube Hair-pin heat exchanger with constant heat flux. This work is carried out for distilled water and a mixture of distilled water and ethylene glycol (10%, 20% and 25% by volume) as heat transfer cold fluid flowing in inner tube to carry away h...