This page has only limited features, please log in for full access.

Mr. Seyed Navid Naghib
University of Calabria

Basic Info


Research Keywords & Expertise

0 energetic efficiency
0 CFD analysis Modelling & Simulations
0 Energy Efficiency in Buildings
0 Energy Analysis
0 energy , sustainability , materials, HVAC and thermal fluid,

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
Profile ImageBehrouz Pirouz University of Calabria
Following: 1 user
View all

Feed

Journal article
Published: 15 July 2021 in Sustainability
Reads 0
Downloads 0

The purpose of heating, ventilation, and air conditioning (HVAC) systems are to create optimum thermal comfort and appropriate indoor air quality (IAQ) for occupants. Air ventilation systems can significantly affect the health risk in indoor environments, especially those by contaminated aerosols. Therefore, the main goal of the study is to analyze the indoor airflow patterns in the heating, ventilation, and air conditioning (HVAC) systems and the impact of outlets/windows. The other goal of this study is to simulate the trajectory of the aerosols from a human sneeze, investigate the impact of opening windows on the number of air changes per hour (ACH) and exhibit the role of dead zones with poor ventilation. The final goal is to show the application of computational fluid dynamics (CFD) simulation in improving the HVAC design, such as outlet locations or airflow rate, in addition to the placement of occupants. In this regard, an extensive literature review has been combined with the CFD method to analyze the indoor airflow patterns, ACH, and the role of windows. The airflow pattern analysis shows the critical impact of inflow/outflow and windows. The results show that the CFD model simulation could exhibit optimal placement and safer locations for the occupants to decrease the health risk. The results of the discrete phase simulation determined that the actual ACH could be different from the theoretical ACH as the short circuit and dead zones affect the ACH.

ACS Style

Behrouz Pirouz; Stefania Palermo; Seyed Naghib; Domenico Mazzeo; Michele Turco; Patrizia Piro. The Role of HVAC Design and Windows on the Indoor Airflow Pattern and ACH. Sustainability 2021, 13, 7931 .

AMA Style

Behrouz Pirouz, Stefania Palermo, Seyed Naghib, Domenico Mazzeo, Michele Turco, Patrizia Piro. The Role of HVAC Design and Windows on the Indoor Airflow Pattern and ACH. Sustainability. 2021; 13 (14):7931.

Chicago/Turabian Style

Behrouz Pirouz; Stefania Palermo; Seyed Naghib; Domenico Mazzeo; Michele Turco; Patrizia Piro. 2021. "The Role of HVAC Design and Windows on the Indoor Airflow Pattern and ACH." Sustainability 13, no. 14: 7931.

Journal article
Published: 16 June 2021 in Sustainability
Reads 0
Downloads 0

The simulation of the ventilation and the heating, ventilation, and air conditioning (HVAC) systems of vehicles could be used in the energy demand management of vehicles besides improving the air quality inside their cabins. Moreover, traveling by public transport during a pandemic is a concerning factor, and analysis of the vehicle’s cabin environments could demonstrate how to decrease the risk and create a safer journey for passengers. Therefore, this article presents airflow analysis, air changes per hour (ACH), and respiration aerosols’ trajectory inside three vehicles, including a typical car, bus, and airplane. In this regard, three vehicles’ cabin environment boundary conditions and the HVAC systems of the selected vehicles were determined, and three-dimensional numerical simulations were performed using computational fluid dynamic (CFD) modeling. The analysis of the airflow patterns and aerosol trajectories in the selected vehicles demonstrate the critical impact of inflow, outflow, and passenger’s locations in the cabins. The CFD model results exhibited that the lowest risk could be in the airplane and the highest in the bus because of the location of airflows and outflows. The discrete CFD model analysis determined the ACH for a typical car of about 4.3, a typical bus of about 7.5, and in a typical airplane of about 8.5, which were all less than the standard protocol of infection prevention, 12 ACH. According to the results, opening windows in the cars could decrease the aerosol loads and improve the low ACH by the HVAC systems. However, for the buses, a new design for the outflow location or an increase in the number of outflows appeared necessary. In the case of airplanes, the airflow paths were suitable, and by increasing the airflow speed, the required ACH might be achieved. Finally, in the closed (recirculating) systems, the role of filters in decreasing the risk appeared critical.

ACS Style

Behrouz Pirouz; Domenico Mazzeo; Stefania Palermo; Seyed Naghib; Michele Turco; Patrizia Piro. CFD Investigation of Vehicle’s Ventilation Systems and Analysis of ACH in Typical Airplanes, Cars, and Buses. Sustainability 2021, 13, 6799 .

AMA Style

Behrouz Pirouz, Domenico Mazzeo, Stefania Palermo, Seyed Naghib, Michele Turco, Patrizia Piro. CFD Investigation of Vehicle’s Ventilation Systems and Analysis of ACH in Typical Airplanes, Cars, and Buses. Sustainability. 2021; 13 (12):6799.

Chicago/Turabian Style

Behrouz Pirouz; Domenico Mazzeo; Stefania Palermo; Seyed Naghib; Michele Turco; Patrizia Piro. 2021. "CFD Investigation of Vehicle’s Ventilation Systems and Analysis of ACH in Typical Airplanes, Cars, and Buses." Sustainability 13, no. 12: 6799.