Heat loss reduction using ceramic micro-particles in paint of the inner walls of a room with radiation cooling panel

Subject Areas : environmental management

Ghanbar Ali Sheikhzadeh ¹ ( - PhD, Department of Mechanical Engineering, Faculty of Engineering, University of Kashan )
Ali Akbar Azemati ² ( PhD Student, Department of Mechanical Engineering, Faculty of Engineering, University of Kashan )
Armin Saraei ³ ( 3- Bachelor Student, Department of Mechanical Engineering, Faculty of Engineering, University of Science and Technology, Iran. )

Received: 2014-04-05 Accepted : 2014-09-17 Published : 2014-12-22

Keywords: Ceramic micro-particles, Reducing energy consumption, Radiation cooling, Environment,

Abstract :

Introduction and Aim Limited resources and the need for energy conservation have made the use of energy loss preventive thermal insulations, like the paints containing micro mineral particles, an economic option in different industries and buildings. The aim of the current study is to investigate the effect of modern insulation, such as paints with ceramic micro-particle in internal walls of a room with radiative cooling panels, on energy consumption.  Method In the present study, to investigate the flow field and temperature distribution in a room with a wall of radiation cooling, a three-dimensional cavity has been simulated with different boundary conditions. The effect of coating with a paint containing ceramic micro-particles, ordinary acrylic paints and no paint in different states of changing the boundary conditions, such as changes in wall temperature and absorption coefficient on a room with wall cooling radiation has been studied and the results were compared. Findings Using the computer code, the interior surface temperature is obtained for different boundary conditions and used as a boundary condition for simulation. In case of using wall radiative cooling panels, room temperature is in the comfort zone in all cases, and the lowest temperature occurs when using paints with ceramic micro-particles in the interior surfaces of the room. Discussion It was observed that the coating containing ceramic micro-particles acted as a thermal insulation and reduced energy consumption by about 22% .

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