Computational fluid dynamics for thermal evaluation of a room with a double glazing window with a solar control film

Highlights

A Room (R) coupled with a Double Glazing Window (DGW) is analyzed for energy savings.

Three cases were defined: C1: R-DGW without solar control film (SCF); C2 and C3: R-DGW with a SCF.

For warm climate, case C2 allowed us to reduce in 67.7% the amount of energy towards the inside room.

Under cold climate condition, both cases C1 and C3 have a similar thermal performance.

Abstract

The thermal analysis of a Room (R) coupled with a Double Glazing Window (DGW) with/without solar control film (SCF) for warm and cold climate conditions of Mexico City is presented. The right vertical surface of the room is considered partially adiabatic and with a DGW. The DGW consists of two vertical semitransparent walls: glazing-1 facing the room, and glazing-2 facing the external environment; there is a SCF attached to glazing-1 for cold climate condition, or glazing-2 for warm climate condition. During one day, the hourly simulations of the R-DGW were done in an in-house code based on the finite volume method. To carry out the thermal analysis of the R-DGW, three cases were defined: Case C1 corresponds to the R-DGW without SCF; Case C2 and C3 correspond to the R-DGW with SCF for warm and cold climate condition, respectively. For warm climate condition the use of a SCF is highly recommended, since Case 2 reduces the amount of energy gained in ≈67.7% compared to Case 1. When using the SCF on the R-DGW for cold climate condition case C3, the average temperature inside of the room is similar to case C1.

Keywords

  • Thermal evaluation;
  • Double glazing window

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