Is the gas refueling for small cars CNG or LNG?
1 Answers
Automotive natural gas refueling involves compressed natural gas, known as CNG, which is natural gas pressurized and stored in containers in a gaseous state. It shares the same composition as pipeline natural gas, with methane being the primary component. CNG vehicles typically have a driving range of up to 250 kilometers, making them suitable for small household cars, buses, and light-duty trucks. Applications of Compressed Natural Gas: Compressed natural gas is an ideal alternative fuel for vehicles, with application technologies that have matured over decades of development. It features low cost, high efficiency, no pollution, and safe, convenient usage, demonstrating strong growth potential. Natural gas refueling stations are generally categorized into three basic types: fast-fill, slow-fill, and a combination of both. Limitations of Compressed Natural Gas: While using CNG as automotive fuel reduces atmospheric pollution, natural gas itself is a resource with limited reserves and is already a primary energy source for urban living. Its application in vehicles further exacerbates its scarcity. This approach may not be as effective as fully utilizing the already scarce petroleum resources. For now, the reliance on petroleum as the primary energy source for vehicles may remain unchanged. Compressed natural gas contains significant amounts of methane, a greenhouse gas that also contributes to ozone layer depletion (O3, another greenhouse gas). Leaks can pose substantial hazards. Methane combustion produces water and carbon dioxide. While water is harmless, the chemical reaction generates considerable amounts of carbon dioxide, another greenhouse gas.
