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Numerical simulations of temperature and velocity fields in the storage tank with the three-coil heat exchanger

Smusz Robert, Wilk Joanna, Bałon Paweł

Advances in Manufacturing Science and Technology

2020

Vol. 44, nr 3

74--79

This article presents the results of the numerical investigation of the thermal stratification in the hot water storage tank. The exchanger consists of three tube coils that are immersed in the storage tank of hot water. Two coils - lower and upper - are designed to warm the water in the tank using the water as a heating medium. Another coil - uses the refrigerant for the waste heat transfer. The temperature stratification device is mounted in the thermal storage tank. The device’s task is to improve the thermal stratification level of heated water. The performed numerical simulations allowed us to obtain the temperature and velocity fields in the storage tank under the conditions of the work of coils filled with water. Calculations were made in the case of the use of the stratification device under the operating conditions of the 10.2478/amst-2019-0015upper and lower coils with water.