Implementations and Optimization in Design of Radiant Cooling Concept with Room Floor and Walls

Krishna Kumar Deshmukh; Palash Shriwastava; Pankaj Jain

doi:10.37591/jotea.v7i1.3726

Abstract

AbstractIn this paper, in order to accurately simulate room thermal performance, a coupling strategy between the room floor and wall with Computational Fluid Dynamics (CFD) simulation of the indoor airflow in a room, and the radiation heat transfer among the internal surfaces of its space and wall is calculated. Mostly research of radiant cooling is performed with radiant pipes in floors and ceiling, so we performed our analysis by installing pipes in wall. The design of room and pipes is modeled in CatiaV5. The governing equations are solved by Finite Element Method (FEM). Radiant cooling systems typically use chilled water running in pipes in thermal contact with the surface. The circulating water only needs to be 2–4°C below the desired indoor air temperature. Heat is removed by the water flowing in the water pipes once the heat from different sources in the space is absorbed by the actively cooled surface–ceiling, floor or walls. Majority of the cooling process results from removing sensible heat through radiant exchange with people and objects and not air, occupant thermal comfort can be achieved with warmer interior air temperatures than with air based cooling systems. Combined with higher cooling capacity of water than air, and the having a cooled surface close to the desired indoor air temperature, radiant cooling systems offer significant reductions in cooling energy consumption.Keywords: Room thermal performance, radiant, CFD, ANSYSCite this ArticleKrishna Kumar Deshmukh, Palash Shriwastava, Pankaj Jain. Implementations and Optimization in Design of Radiant Cooling Concept with Room Floor and Walls. Journal of Thermal Engineering and Applications. 2020; 7(1): 15–23p.