Numerical study of fluid flow and heat transfer in a gas-tank water heater

Tavakoli, Mohammad Hossein; Moharramkhani, Khatereh

doi:10.22075/jhmtr.2015.336

Numerical study of fluid flow and heat transfer in a gas-tank water heater

Document Type : Full Length Research Article

Authors

Mohammad Hossein Tavakoli

Khatereh Moharramkhani

Physics Department, Bu-Ali Sina University, Hamedan, Iran

10.22075/jhmtr.2015.336

Abstract

Influence of a vent hood at the exit of exhaust flue gas and flue baffles in the fire
tube on the temperature and flow fields of a gas tank water heater, as well as the
structure and amount of heat transferred to the water tank has been studied
numerically using two-dimensional steady state finite element simulation.
Observations show that without a vent hood, there is a downward gas flow in the
flue and a strong vortex in the lower burner chamber. Using a vent hood prevents
the gas back flow into the flue, and placing the flue baffles increases the heat
delivered to the water

Keywords

Fluid flow

Heat transfer

Tank water heater

Computer simulation

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