Application de la vision artificielle dans les scieries europeennes : un rapport de voyage prepare pour le Conseil national de recherches du Canada (Mai 1988)
Relative humidity (RH) and temperature play a large role in the moisture content of available fuels, affecting the fire weather indices that indicate intensity, ignition, and spread potential of wildfires. However, the magnitude of increase in RH and decrease in temperature necessary to impact intensity and ignition potential is dependent on many additional factors including aspect, altitude, wind speed, atmospheric stability, fuel loading, fuel structure, and moisture content of the fuels.
Natural gas trucks have been around for a long time, but recent technological improvements and improvements in technology and increases in the cost of diesel fuel have created a interest in these vehicles. In addition to potential cost savings, natural gas trucks potential cost savings, natural gas trucks can reduce greenhouse gas (GHG) greenhouse gas (GHG) emissions by up to 25% compared to diesel. Thanks to recent developments in natural gas extraction processes, North American reserves have North American reserves have increased dramatically and better prices are now possible in the prices are now possible in the long term.
Abstract
Les camions au gaz naturel ne datent pas d’hier, mais les récentes améliorations technologiques et les hausses du coût du diesel ont créé un regain d’intérêt pour ces véhicules. En plus d’offrir des économies de coût potentielles, les camions au gaz naturel peuvent réduire les émissions de gaz à effet de serre (GES) jusqu’à 25% par rapport au diesel. Grâce aux récents développements dans les procédés d’extraction du gaz naturel, les réserves nord-américaines ont augmenté de façon marquée et des prix plus avantageux sont maintenant envisageables à long terme.
Le rapport présente une carte routière traçant les grandes lignes d'une stratégie d'innovation technologique, de recherche et de développement, ainsi que de transfert technologique pour les opérations forestières canadiennes au cours de la prochaine décennie. La carte identifie les points de départ et d'arrivée, discute des forces motrices, décrit les occasions favorables à des améliorations technologiques et donne des recommandations sur la meilleure route à choisir pour l'avenir.
Over the past few years, the constant rise in the price of fuel has prompted the development of new technologies to reduce fuel consumption. To address this concern heavy equipment manufacturers have been introducing new models integrating technologies, such as the diesel-electric hybrid suggesting improved fuel efficiency. In order to validate these claims FPInnovations has developed a methodology aimed at conducting controlled tests to measure fuel consumption. Tests were conducted on three different models of bulldozers of the same power class in order to compare their fuel consumption and energy efficiency. The evaluation of these three bulldozers was carried out on a controlled test track where standardized working conditions were reproduced. This report presents the findings of these tests conducted in Chipman, New Brunswick, in cooperation with J.D. Irving Limited. The test had three main objectives: 1) develop a standardized procedure to measure the fuel consumption of the bulldozers in a controlled environment; 2) compare the fuel consumption of three different models (drive trains) of bulldozers (electric, hydrostatic and standard) for a typical work cycle; and 3) quantify the variation in fuel consumption resulting from the differences between the engine/drive train technologies of the test machines.
