there are many potential sources of stormwater pollutants in urban areas; one of these sources is gas stations, which are numerous and spread city-wide. a study was conducted to evaluate the water quality of runoff from gas stations in the city of tijuana, mexico. pollutant loads in runoff from gas stations in the study area were higher than in other published studies. the estimated loads from ...

There are similar algorithms and infrastructure for storing gas fuels at CNG (Compressed Natural Gas) and CHG (Compressed Hydrogen Gas) fuelling stations. In these stations, the fuels are usually stored in the cascade storage system to utilize the stations more efficiently. The cascade storage system generally divides into three reservoirs, commonly termed low, medium and high-pressure reservoi...

This paper investigates the nature of competition in the retail gasoline market using a two year panel data of weekly prices for gas stations in San Diego county. The primary dimension of product differentiation in the retail gasoline market is spatial in the sense that a gas station’s market power depends on the locations of all other gas stations. In contrast to previous empirical studies, I ...

In this paper, an Ant Colony Optimization Algorithm (ACO) is proposed for operations of steady flow gas pipeline. The system is composed of compressing stations linked by pipe legs. The decisions variables are chosen to be the operating turbo compressor number and the discharge pressure for each compressing station. The objective function is the power consumed in the system by these stations. U...

Abstract The article investigates the properties and potential of compressed hydrogen as one most promising energy carriers in order to facilitate development storage capabilities lay down a stable foundation for future sustainable sector. study considers use hydrogen, at high pressure from 50 MPa 100 MPa, refuelling stations supply electric cars. technical modern hydraulic compressors used acc...

In this paper, the optimal numbers of gas and hydrogen stations are examined. Recently, the possibility of gasoline vehicles being replaced with fuel cell vehicles (FCV) is being examined in the coming hydrogen society. The realization of this scenario however needs a large number of hydrogen refueling stations, which hardly exist at the present. We first calculate the optimal number of hydroge...

Introduction. In Ukraine, the transit traffic flow, number of freight, passenger and private vehicles is growing every year, which leads to a constant increase in gas stations. The station market stiff competition, closed beginners. It almost impossible for non-affiliated persons obtain information on real purchase sale agreements. view this fact, issue developing methodological applied princip...

In this paper we consider the usage of multiple base stations for IP streaming applications towards wireless terminals. The usage of multiple channels, coming from different base stations, increase the capacity and robustness at the price of an additional IP overhead. Therefore, we advocate to use a novel IP header compression scheme for efficient usage of spectrum resources. We propose the coo...

Aim. The paper examined the matter of assessment functional dependability compressor stations (CS) underground gas storage (UGS) facilities. A definition CS and guidelines for its were proposed. Methods. Design calculation stations, scenario analysis. Results. presents: a) a definition, indicators assessment; b) an example application UGS CS; c) comparative analysis in number various versions: ...