Bus for Urban Public Transport: Energy Performance Optimization

Vollaro, Roberto De Lieto; Evangelisti, Luca; Battista, Gabriele; Gori, Paola; Guattari, Claudia; Fanchiotti, Aldo

doi:10.1016/j.egypro.2014.01.078

Cited by 17 publications

(3 citation statements)

References 4 publications

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“…A 1-2 C temperature increment has been found after the simulation of the radiation model. Vollaro et al 12 pointed out that the specified thermal transmittance glass should be used in order to reduce thermal loads and improve journey comfort in a vehicle. Yang et al 13 found that the optimization usage of solar energy can improve the occupier's environment quality.…”

Section: Introductionmentioning

confidence: 99%

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Thermal comfort analysis of a high-speed train cabin considering the solar radiation effects

Yang

2019

Indoor and Built Environment

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Due to the fast development of high-speed rail (HSR) around the world, high-speed trains (HSTs) are becoming a strong competitor against airliners in terms of long-distance travel. Compared with airliner cabins, HST cabins have much larger window sizes. When the big windows provide better lighting and view of the scenery, they also have significant effects on the thermal conditions in the cabins due to the solar radiation through them. This study presents a numerical study on the solar radiation on the thermal comfort in a typical HST cabin. The effect of solar radiation was discussed in terms of airflow pattern, temperature distribution and thermal comfort indices. Parametric studies with seven different daytime hours were carried out. The effect of using the roller curtain was also studied. The overall cabin air temperature, especially near passengers, was found to have significantly increased by solar radiation. Passengers sitting next to windows were recorded to have an obvious thermal comfort variation at different hours of the day. To improve the passengers’ comfort and reduce energy consumption during hot weather, the use of a curtain could effectively reduce the solar radiation effect in the cabin environment.

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Section: Introductionmentioning

confidence: 99%

“…Vollaro et al. 12 pointed out that the specified thermal transmittance glass should be used in order to reduce thermal loads and improve journey comfort in a vehicle. Yang et al.…”

Section: Introductionmentioning

confidence: 99%

Thermal comfort analysis of a high-speed train cabin considering the solar radiation effects

Yang

2019

Indoor and Built Environment

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“…Many in-use factors influence the energy consumption of transit buses, whether that energy is consumed as a liquid fuel in conventional diesel buses (CDBs) or an electrical charge in battery electric buses (BEBs). Such factors include air conditioning use ( 5 ), auxiliary diesel heating ( 5 ), driver behavior ( 6 ), route type ( 7 ), traffic ( 7 ), and passenger mass. Zhang et al showed that average bus fuel consumption increased from 19% to 33% when average speed decreased from 25 to 15 km/h in transit buses ( 8 ).…”

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confidence: 99%

Impact of Time-Varying Passenger Loading on Conventional and Electrified Transit Bus Energy Consumption

Liu

Kotz

Salapaka

et al. 2019

Transportation Research Record

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Transit bus passenger loading changes significantly over the course of a workday. Therefore, time-varying vehicle mass as a result of passenger load becomes an important factor in instantaneous energy consumption. Battery-powered electric transit buses have restricted range and longer “fueling” time compared with conventional diesel-powered buses; thus, it is critical to know how much energy they require. Our previous work has shown that instantaneous transit bus mass can be obtained by measuring the pressure in the vehicle’s airbag suspension system. This paper leverages this novel technique to determine the impact of time-varying mass on energy consumption. Sixty-five days of velocity and mass data were collected from in-use transit buses operating on routes in the Twin Cities, MN metropolitan area. The simulation tool Future Automotive Systems Technology Simulator was modified to allow both velocity and mass as time-dependent inputs. This tool was then used to model an electrified and conventional bus on the same routes and determine the energy use of each bus. Results showed that the kinetic intensity varied from 0.27 to 4.69 mi−1 and passenger loading ranged from 2 to 21 passengers. Simulation results showed that energy consumption for both buses increased with increasing vehicle mass. The simulation also indicated that passenger loading has a greater impact on energy consumption for conventional buses than for electric buses owing to the electric bus’s ability to recapture energy. This work shows that measuring and analyzing real-time passenger loading is advantageous for determining the energy used by electric and conventional diesel buses.

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On the Influence of Geometrical Features and Wind Direction over an Urban Canyon Applying a FEM Analysis

et al. 2015

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Bus for Urban Public Transport: Energy Performance Optimization

Cited by 17 publications

References 4 publications

Thermal comfort analysis of a high-speed train cabin considering the solar radiation effects

Thermal comfort analysis of a high-speed train cabin considering the solar radiation effects

Impact of Time-Varying Passenger Loading on Conventional and Electrified Transit Bus Energy Consumption

On the Influence of Geometrical Features and Wind Direction over an Urban Canyon Applying a FEM Analysis

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