Numerical simulation for optimization of the indoor environment of an occupied office building using double-panel and ventilation radiator

Ganesh, Ghogare Abhijeet; Sinha, Shobha Lata; Verma, Tikendra Nath

doi:10.1016/j.jobe.2019.101139

Cited by 29 publications

(7 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Scientists have paid attention to the indoor AD system concerning the indoor air quality ( Verma et al., 2018 ). Results from previous studies shows that inlet airflow direction ( Ganesh et al., 2020 ), indoor heating sources ( Ganesh et al., 2020 , Ganesh et al., 2020 ), and air change rate (ACH) ( Verma et al., 2017 ) could be key factors to influence the air quality indoor. In addition, Verma et al.…”

Section: Introductionmentioning

confidence: 99%

An air distribution optimization of hospital wards for minimizing cross-infection

Wang

Cao

Chen

2021

Journal of Cleaner Production

View full text Add to dashboard Cite

Currently, the “2019-CoV-2” has been raging across the world for months, causing massive death, huge panic, chaos, and immeasurable economic loss. Such emerging epidemic viruses come again and again over years, leading to similar destructive consequences. Air-borne transmission among humans is the main reason for the rapid spreading of the virus. Blocking the air-borne transmission should be a significant measure to suppress the spreading of the pandemic. Considering the hospital is the most probable place to occur massive cross-infection among patients as emerging virus usually comes in a disguised way, an air distribution optimization of a general three-bed hospital ward in China is carried out in this paper. Using the Eulerian-Lagrangian method, sneeze process from patients who are assumed to be the virus carrier, which is responsible for a common event to trigger cross-infection, is simulated. The trajectory of the released toxic particle and the probability of approaching others in the same ward are calculated. Two evaluation parameter, total maximum time (TMT) and overall particle concentration (OPC) to reflect the particle mobility and probability to cause cross-infection respectively, are developed to evaluate the proposed ten air distributions in this paper. A relatively optimized air distribution proposal with the lowest TMT and OPC is distinguished through a three-stage analysis. Results show that a bottom-in and top-out air distribution proposal is recommended to minimize cross-infections.

show abstract

Section: Introductionmentioning

confidence: 99%

An air distribution optimization of hospital wards for minimizing cross-infection

Wang

Cao

Chen

2021

Journal of Cleaner Production

View full text Add to dashboard Cite

show abstract

“…[31][32][33][34][35][36][37][38][39][40][41][42][43][44]. While CFD is an effective tool for numerical study, other numerical study involving ANN may be conducted for enhancing the results, as studies reported earlier have confirmed the same [45][46][47][48][49][50][51][52][53][54].…”

Section: Introductionmentioning

confidence: 91%

Experimental and Numerical Investigation of Contaminant Control in Intensive Care Unit: A Case Study of Raipur, India

Verma

Sinha

2020

Journal of Thermal Engineering

View full text Add to dashboard Cite

Proper ventilation is an important strategy in the practice of infection control. Hospitals are complex atmospheres that require ventilation for thermal comfort of patients as well as control of harmful pathogens infection emissions. The present study is performed on a hospital at Raipur (21.2514° N, 81.6296° E), India, to analyze the avoidance of airborne infections from the mouth of patient to protect the doctor and other patients in the intensive care unit (ICU) using Computational Fluid Dynamics (CFD) software FLUENT. Incense smoke is used to for capturing velocity field. Twenty seven (27) cases of simulation were executed using different air change per hour (ACH) (6, 9 & 12) and different inlet and outlet positions talking into account the constant inlet temperature (20 °C). The wall temperatures were taken out from ISHRAE handbook for Raipur region. The velocity vector and capturing the flow field were also performed experimentally. All three turbulence model (Standard, RNG & Realizable) predictions have shown to be in good agreement with the experimental data. It can be effectively employed to validate the extensively used k-ε model which was commonly used for ICU.

show abstract

“…Numerical methods such as CFD have been used to study ventilation flows for a wide variety of application such as parking lots [22], passive cooling [23], radiant heated ceiling [24], effect of insulating wall paints on space conditioning [25], underground car parks [26], office rooms [27], natural ventilation [28] and pollution in hospital [29][30][31][32][33][34][35] . In general it is more cheaper and faster than the analytical and experimental methods.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Natural Convection in a Heated Room and Its Implication on Thermal Comfort

Anthony

Verma

2021

Journal of Thermal Engineering

View full text Add to dashboard Cite

A heated room is numerically analyzed to study thermal comfort. Cold air flowing in from the inlet gets heated by a heat source (placed just below the inlet), before being distributed throughout the room. The presence of the heat source and a high Rayleigh number causes the flow of air to be buoyant and turbulent. Two RANS based turbulence models, RNG k-ε and k-ω SST turbulence models are used to model turbulence and the Discrete Ordinate (DO) radiation model is used to model radiation heat transfer between different surfaces in the room. In order to account for buoyant air movement, air is approximated as a Boussinesq fluid. Parameters that affect comfort such as comfort temperature, operative temperature, turbulence intensity, velocity and the temperature difference between the head and ankle level are investigated. It is found that the comfort temperature and operative temperature predicted in this study have similar profiles irrespective of the turbulence models. Predicted values of turbulence intensity and velocity were low, which shows a low risk of drought in the occupied zone. The two RANS models give results similar to earlier studies that were performed with different turbulence and radiation models, proving their robustness and viability for a variety of flow problems.

show abstract

Numerical simulation for optimization of the indoor environment of an occupied office building using double-panel and ventilation radiator

Cited by 29 publications

References 41 publications

An air distribution optimization of hospital wards for minimizing cross-infection

An air distribution optimization of hospital wards for minimizing cross-infection

Experimental and Numerical Investigation of Contaminant Control in Intensive Care Unit: A Case Study of Raipur, India

Numerical Analysis of Natural Convection in a Heated Room and Its Implication on Thermal Comfort

Contact Info

Product

Resources

About