Liquefied Natural Gas - Heavy Duty Truck Applications

1995 ◽  
Author(s):  
Geoffrey Hanshaw ◽  
Gary Pope
Keyword(s):  
Natural Gas ◽  
Liquefied Natural Gas ◽  
Heavy Duty ◽  
Heavy Duty Truck

Feasibility Analysis of Refuelling Infrastructure for Compressed Renewable Natural Gas Long-Haul Heavy-Duty Trucks in Canada

2021 ◽  
Author(s):  
Wahiba Yaïci ◽  
Michela Longo
Keyword(s):  
Natural Gas ◽  
Test Cases ◽  
Selling Price ◽  
Heavy Duty ◽  
Heavy Duty Truck ◽  
Transportation Sector ◽  
Depth Analysis ◽  
Harmful Emissions ◽  
Renewable Natural Gas ◽  
The Cost

Abstract With environmental concerns and limited natural resources, there is a need for cleaner sources of energy in the transportation sector. Renewable natural gas (RNG) is being considered as a potential fuel for heavy-duty applications due to its comparable usage to diesel and gasoline in vehicles. The idea of compressed RNG vehicles is being proposed especially because it will potentially significantly reduce harmful emissions into the environment. This initiative is taken in order to decrease vehicle emissions and support Canada’s commitments to the climate plans reinforcing active transportation infrastructure, in concert with new transit infrastructure, and zero emission vehicles. This study examines the feasibility of implementing a nationwide network of compressed RNG refuelling infrastructure in order to accommodate a conversion of Canada’s long-haul, heavy-duty truck fleet from diesel fuel to RNG. Two methods, Constant Traffic and Variable Traffic, along with data about compressed RNG infrastructure and vehicles, were developed and used to predict fuelling requirements for Canada’s long-haul, heavy-duty truck fleet. Then, a detailed economic analysis was conducted on various test cases to estimate how different variables impact the final selling price of RNG. This provided insight with the understanding of what factors go into pricing RNG and if it can compete against diesel in the trucking market. Results disclosed that the cost to purchase RNG is the greatest factor in the final selling price of compressed RNG. Due to the variability in RNG production however, there is no precise cost, which makes predictions difficult. However, results revealed that it is possible for compressed RNG to be competitive with diesel, with the mean compressed RNG price being 16.5% cheaper than diesel, before being taxed. Future studies should focus on the feasibility of the production of RNG and the associated costs, with emphasis on the Canadian landscape. An in-depth analysis on operational and maintenance costs for compressed RNG refuelling stations may also provide predictions that are more accurate.

scholarly journals A boil-off gas utilization for improved performance of heavy duty gas turbines in combined cycle

2018 ◽  
Vol 233 (1) ◽  
pp. 96-110 ◽  
Author(s):  
Stefano Mazzoni ◽  
Srithar Rajoo ◽  
Alessandro Romagnoli
Keyword(s):  
Heat Transfer ◽  
Natural Gas ◽  
Ambient Temperature ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Liquefied Natural Gas ◽  
Combined Cycle ◽  
Cooling Power ◽  
Heavy Duty ◽  
Cold Energy

The storage of the natural gas under liquid phase is widely adopted and one of the intrinsic phenomena occurring in liquefied natural gas is the so-called boil-off gas; this consists of the regasification of the natural gas due to the ambient temperature and loss of adiabacity in the storage tank. As the boil-off occurs, the so-called cold energy is released to the surrounding environment; such a cold energy could potentially be recovered for several end-uses such as cooling power generation, air separation, air conditioning, dry-ice manufacturing and conditioning of inlet air at the compressor of gas turbine engines. This paper deals with the benefit corresponding to the cooling down of the inlet air temperature to the compressor, by means of internal heat transfer recovery from the liquefied natural gas boil-off gas cold energy availability. The lower the compressor inlet temperature, the higher the gas turbine performance (power and efficiency); the exploitation of the liquefied natural gas boil-off gas cold energy also corresponds to a higher amount of air flow rate entering the cycle which plays in favour of the bottoming heat recovery steam generator and the related steam cycle. Benefit of this solution, in terms of yearly work and gain increase have been established by means of ad hoc developed component models representing heat transfer device (air/boil-off gas) and heavy duty 300 MW gas turbine. For a given ambient temperature variability over a year, the results of the analysis have proven that the increase of electricity production and efficiency due to the boil-off gas cold energy recovery has finally yield a revenue increase of 600,000€/year.

Natural Gas Powered Heavy Duty Truck Demonstration

1996 ◽  
Author(s):  
Buerebista Ursu ◽  
G. Campbell Perry
Keyword(s):  
Natural Gas ◽  
Heavy Duty ◽  
Heavy Duty Truck

Dual-Fuel System for Heavy Duty Truck Engines

2001 ◽  
Author(s):  
Usman Asad ◽  
Umar A. Shafique
Keyword(s):  
Natural Gas ◽  
Engine Performance ◽  
Dual Fuel ◽  
Heavy Duty ◽  
Operating Modes ◽  
Heavy Duty Truck ◽  
Light Load ◽  
Conversion System ◽  
Transportation Applications ◽  
Gas Conversion

Abstract Increasing emphasis on natural gas as a clean, economical and abundant fuel advocates its increasing use in transportation applications. In developing countries like Pakistan and India where, more than 80% of the goods are transported by trucks and where natural gas is available in abundance, development of natural gas conversion systems for heavy-duty truck engines offers a viable option to replace the use of expensive imported fuels. A complete dual-fuel (natural gas/diesel) conversion system developed using mostly commercially available components, for the Hino EC-100 diesel engine is described. Both diesel and natural gas operating modes are possible, without undermining normal engine performance as a diesel. The conversion system has performance similar to the ‘straight diesel’ operation, with comparable efficiency at full load. Furthermore, particulate and oxide of nitrogen (NOx) emissions are considerably lower than on diesel, however, carbon monoxide and hydrocarbon exhaust emissions are higher, particularly at light load.

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