In this paper we describe ongoing research in the areas of maintenance and warranty decision-making for gas turbines used in power plants. We first frame the problem within a larger context of equipment monitoring, diagnostics and maintenance. We then focus on describing and modeling economic issues related to warranty maintenance service from the perspectives of both the consumer (power plant ...

In this paper we describe research in the areas of maintenance and warranty decision-making for gas turbines used in power plants. We first frame the problem within a larger context of equipment monitoring, diagnostics and maintenance. We then focus on describing and modeling economic issues related to warranty maintenance service from the perspectives of both the consumer (power plant owner) a...

Amid growing concerns about climate change and long-term petroleum reserves, the food system looms large as a major user of fossil fuels and, as a result, producer of greenhouse gases (GHG). Indeed, these twin problems may be the significant drivers that catalyze change in the food system in the 21 century. Already we are witnessing a stream of new policies aimed at reducing greenhouse gases, i...

Abstract This paper describes an experimental study of the operation internal combustion engine fueled by a low-calorific value gas. The main operating parameters low-power ICE were determined. Efficiency was also evaluated when converted to operate on producer In experiment, it shown that reached stable mode under load and data temperature exhaust gases composition obtained. According our esti...

Directional dispersal plays a large role in shaping ecological processes in diverse systems such as rivers, coastlines and vegetation communities. We describe an instability driven by directional dispersal in a spatially explicit consumer–producer model where spatial patterns emerge in the absence of external environmental variation. Dispersal of the consumer has both undirected and directed co...

A reservoir-scale numerical conceptual model was established according to the actual geological characteristics of a carbonate fractured-vuggy reservoir. Considering difference in density and viscosity fluids under reservoir conditions, CFD (computational fluid dynamic) porous medium applied simulate process nitrogen displacement after water flooding. The effects gas injection rate, mode, injec...

The study of biomass gasification has gained great interest in recent decades, representing an attractive process for the production energy and heat hydrogen second-generation biofuels. objective this work is to characterize composition producer gas, as well its potential. Experiments are carried out a fixed bed gasifier on pilot plant scale, bulk sawdust from pine wood used raw material. influ...

Since Marshall, the standard approach to developing a theory of competitive markets is to separate demand behavior (“consumer theory”) from supply behavior (“producer theory”) and then use the notion of market equilibrium to reconcile demand and supply. This note studies producer theory and a separate one studies consumer theory. The standard model has the following features. Firms are describe...

This work describes the use of intermediate pyrolysis system to produce liquid, gaseous and solid fuels from pelletised wood and barley straw feedstock. Experiments were conducted in a pilot-scale system and all products were collected and analysed. The liquid products were separated into an aqueous phase and an organic phase (pyrolysis oil) under gravity. The oil yields were 34.1 wt.% and 12.0...