CFD Investigation on Optimization of Pipe Pattern in Radiant Cooling System

EasyChair Preprint no. 4419

Abstract

The radiative heat transfer process has so far been proven effective and efficient in the Heating, Ventilation and Air Conditioning industry and therefore it has been used for air conditioning applications. Radiant floor heating systems could be even effective over the conventional air conditioning systems as the water in motion that is used in the radiative systems have more energy carrying capacity compared to air in motion used in conventional air conditioning system. In the present study, the computational fluid dynamics analysis of a radiant cooled room is carried out by varying the design of pipe patterns and their simulations for cooling the typical room has been carried out. Eleven such pipe patterns were analyzed for both steady and unsteady conditions. A three dimensional geometrical model of specified dimension was used for the analysis. Ordinary heat loads from the light bulb, window, floor, human and laptop are defined in the model. Different loads such as energy, buoyancy, and radiation are also included in the simulation and thermal boundary conditions are applied on ceiling and walls. Also, the effect on the analysis when the room is unoccupied and occupied was studied by considering the factors such as air velocity, inlet water temperature as constant. This study validated by the difference between the inlet and outlet of water and air temperature respectively. The temperature distribution pattern in a room due to the mixed flow design pipe pattern was found to be most effective for cooling and better comfort conditions.

Keyphrases: boundary conditions, CFD analysis, design of pipe pattern, heat loads, pipe patterns, Radiant cooling

@Booklet{EasyChair:4419,
  author = {Prashant R. Nawale and Sudesh B. Powar and Pramod P. Kothmire},
  title = {CFD Investigation on Optimization of Pipe Pattern in Radiant Cooling System},
  howpublished = {EasyChair Preprint no. 4419},

  year = {EasyChair, 2020}}