Safety Considerations in Using LP-Gas Engine Fuel

2009 ◽  
pp. 125-125-10
Author(s):  
Don Schultz
2021 ◽  
Vol 2094 (5) ◽  
pp. 052005
Author(s):  
M A Kovaleva ◽  
V G Shram ◽  
T N Vinichenko ◽  
E G Kravtsova ◽  
D G Slashchinin ◽  
...  

Abstract In this paper, the analysis of alternative fuels is carried out: electricity, hydrogen, biofuels (bioethanol, biodiesel, biogas), solar energy, compressed air, gas engine fuel (compressed natural gas, liquefied petroleum gas, liquefied natural gas). The advantages and disadvantages of their use are indicated according to the criteria of environmental safety, cost, and infrastructure development. It is revealed that at the moment, gas-engine fuel, in particular liquefied petroleum gas and compressed natural gas, is most suitable for the transfer of the fleet. The economic and environmental effect of the market expansion is associated with the high environmental friendliness of this type of fuel, low price, large natural reserves, the development of the petrochemical industry of the country, the reduction of financial costs for the repair and reconstruction of physically and morally outdated oil refining and liquid fuel production enterprises, promising technical and technological solutions to transport problems.


2021 ◽  
Vol 323 ◽  
pp. 00029
Author(s):  
Andrii Radchenko ◽  
Dariusz Mikielewicz ◽  
Mykola Radchenko ◽  
Serhiy Forduy ◽  
Oleksandr Rizun ◽  
...  

The majority of integrated energy systems (IES) for combined electricity, heat and refrigeration generation, or trigeneration, are based on gas engines. The fuel efficiency of gas engines are strictly influenced by intake air temperatures. Practically in all IES the absorption lithium-bromide chillers (ACh) are applied for conversing the heat removed from the engine into refrigeration in the form of chilled water. The peculiarity of trigeneration in food industries is the use of chilled water of about 12°C for technological needs instead of 7°C as typical for ACh. This leads to a considerable great potential of engine intake air deeper cooling not realized by ACh, that can be used by ejector chiller (ECh) as the low temperature stage of two-stage absorption-ejector chiller (AECh) to provide engine cyclic air deep cooling and enhancing engine fuel efficiency. To evaluate the effect of gas engine cyclic air cooling the data on fuel consumption and power output of gas engine JMS 420 GS-N.L were analyzed.


2020 ◽  
Vol 50 ◽  
pp. 226-233
Author(s):  
Aleksandr Kapustin ◽  
Sergey Vorobiev ◽  
Valery Gordienko ◽  
Aleksandr Marusin

Author(s):  
Anatoliy Nickolaevich Sobolenko

The task of using natural gas-engine fuel in transport diesel engines (marine and automobile) is very actual. The trends of converting diesel engines to gas mode on ships of the port fleet and fishing vessels are becoming widespread. The importance to clarify the calculation methods of the working process for gas mode diesel engines is growing. Natural gas has been stated to comprise different gases - methane, ethane, propane, butane, carbon monoxide, etc., the percentage correlations of which being presented. There has been studied the method of calculating heat capacity of “pure” combustion products, i.e. under fuel combustion with excessive air coefficient α =1. The chemical reactions of oxidation elements of gas fuel components during its combustion determine the amount of kilomole of combustion products. To determine the heat capacity of the components of the combustion products - CO2, H2O and N2, the known tables of gases and water vapor properties were used. As a result of data processing, approximating linear and quadratic dependences were obtained. Нeat capacities are calculated in the linear formula of the specific heat of “pure” combustion products as the heat capacity of the gas mixture. As a result, a formula for determining the heat capacity of “clean” combustion products of gas fuel has been obtained: CVG = 25.03 + 0.0065· T . For determining the heat capacity of “clean” combustion products of gas fuel with 10% additive of ignition diesel fuel the formula has the following form CVGZH = 24.57 + 0.006· T . The dependences obtained are fairly accurate and recommended for using in the practice of converting diesel engines to gas-engine fuel, as well as when carrying out works and watercraft technology in building the ships and water transport.


Author(s):  
Seref Soylu

A two-zone thermodynamic model was developed for a spark ignition natural gas engine. The model was used to calculate instantaneous mass burning rate and thermodynamic state of burned and unburned zones of the combustion chamber content. Cylinder pressure data was collected at various engine operating conditions. Natural gas and natural gas–propane mixtures were used as engine fuel. From the burning rate analysis various combustion characteristics, such as flame initiation period (FIP) and flame propagation period (FPP) were calculated at various engine operating conditions. It was observed that both the FIP and FPP decrease with increasing equivalence ratio for lean mixtures. While the retarded timing decreases the FIP, the FPP has a tendency to increase. Addition of propane to natural gas reduces the FPP although the FIP is not affected. Unburned and burned gas temperatures are significantly raised with increase in equivalence ratio. However, ignition timing and propane fraction do not influence the temperatures as much as equivalence ratio does.


2020 ◽  
pp. 102-112
Author(s):  
Алексей Юрьевич Шебеко ◽  
Евгений Евгеньевич Простов ◽  
Евгений Николаевич Простов ◽  
Денис Михайлович Гордиенко

Представлено краткое описание автомобильных топливных систем, включающих в себя газобаллонное оборудование (ГБО) различных поколений, рассмотрена эволюция систем ГБО. Проанализированы статистические данные по автомобилям с ГБО, количество и причины пожаров на газобаллонных автомобилях (ГБА), рассчитана средняя частота возникновения пожаров для легковых, грузовых ГБА и автобусов с ГБО. A brief description of automotive fuel systems, including gas cylinder equipment (GCE) of various generations is presented. The evolution of gas cylinder equipment systems is considered. The safety of a gas cylinder is analysed depending on a wide range of factors. The statistics of FGBU VNIIPO on the number of fires in the Russian Federation by types of gas equipment (installations, devices, units), which became the source of the fire, as well as the statistics on causes of fires are presented and reviewed. There are presented the results of calculations concerning the frequency of fire occurrence per year per one vehicle that is in service and operates with CNG or LPG as a motor fuel in Russia due to violation of the rules for design and maintenance of gas equipment. The separate data on vehicles powered by CNG and LPG are not presented, since the existing statistical base on fires does not imply separation of vehicles by types of used gas engine fuel. The specified data are representative for enterprises for storage and maintenance of gas motor fuel vehicles and characterize the fire hazard of GCE, since such causes of fire as arson, violation of the rules for design and maintenance of vehicles, etc. are not actually implemented at the abovementioned enterprises. The data of the National Transportation Statistics of the USA in terms of the ratio of the total number of various vehicles to the number of running on gas engine fuel are considered. Conclusions on the causes of fires on gas cylinder automobile (GBA) are drawn.


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