On the thermal performance of naturally ventilated room with straw insulation retrofitted envelope for different climatic zones of India

Sabapathy, Karthik A.; Gedupudi, Sateesh

doi:10.1016/j.jclepro.2022.130665

Cited by 7 publications

(2 citation statements)

References 66 publications

(65 reference statements)

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“…The temperatures specified for the roof and the other walls are 37 °C and 35 °C, respectively, corresponding to 10.00 p.m. [9,10], with the floor being adiabatic. The Surface to Surface (S2S) radiation model was employed to account for radiation heat transfer between the inside surfaces.…”

Section: Resultsmentioning

confidence: 99%

“…This value is compared with the TSI obtained for a ceiling fan in an enclosed room running at 330 rpm, with fan power being the same for both the exhaust fan and the ceiling fan (25 W). This analysis was done for different times of the day, considering the wall temperatures, inlet temperature, and relative humidity corresponding to that time instant [9,14], as illustrated in table 4. Also, the room air velocity values obtained with the ceiling fan are different at different locations in the room.…”

Section: Thermal Comfort Evaluationmentioning

confidence: 99%

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3D CFD simulation of room air temperature and velocity with ceiling fan and exhaust fan and the resulting thermal comfort

Thomas,

Gedupudi

2024

J. Phys.: Conf. Ser.

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The integration of energy-efficient solutions remains an essential hurdle in the pursuit of sustainable and comfortable indoor settings. As building energy consumption continues to climb, there is an urgent need to implement methods that reduce environmental effects, and at the same time, maintain adequate thermal comfort for occupant well-being and productivity. Ceiling fans, a standard fixture in many indoor settings, have gained popularity for their ability to provide better air movement and temperature adjustment while using substantially less energy than standard HVAC systems. This work presents a 3D Computational Fluid Dynamics (CFD) investigation of thermal comfort that can be achieved with a ceiling fan and an exhaust fan. A 3D fan zone model available in ANSYS Fluent was used to model the ceiling fan, considering the ceiling fan as a solid disc. Numerical methodology has been validated by verifying the transient simulation results against the experimental data available in the literature. The work analyzes thermal comfort parameters - temperature and velocity - in a room with a typical ceiling fan or an exhaust fan available in India. The room temperature and velocity distribution are presented for different times of a day in summer for a warm and humid climatic zone in India. The results show that the thermal comfort obtained with the exhaust fan is better than that with the ceiling fan for the evening, night, and early morning.

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Section: Resultsmentioning

confidence: 99%

Section: Thermal Comfort Evaluationmentioning

confidence: 99%