A black liquor recovery boiler has two main functions. On one hand, it generates steam from the heat energy liberated upon combustion of the organic constituents of black liquor burned in the boiler, whereby the recovery boiler serves as a steam boiler. On the other hand, the chemicals from pulp digesting sulphur and sodium are recovered from the black liquor, the recovery boiler then serving a...

For longer distances, natural gas is transported through transit pipeline at high pressures. In a place of consumption or at passing into a lower pressure pipeline, the pressure of the gas must be reduced. In Iran, the common procedure of reducing pressure in natural gas station is using expansion valves, which causes the waste of large amount of energy. Combined heat and power (CHP) systems ha...

The backpressure steam turbine installations for combined production generate thermal energy and electricity. produced electricity depends on the heat load determined by consumers. Heat is released in district heating system through water, which heated with exhausted boiler-condenser (district heater). operation regime of installation influenced temperature water at input output boiler-condense...

To develop an innovative cogeneration biomass boiler, which uses thermoelectric generators (TEG), a simplified model of the heat exchanger is created and design optimized. The boiler with thermal power 200 kW will partly convert into electricity. maximum temperature hot side TEG should not exceed 300°C to avoid damage. While holding these requirements cost installation space be as low possible,...

Electric-heat coupling characteristics of a cogeneration system and the operating mode fixing electricity with heat are main reasons for wind abandonment during heating season in Three North area. To improve wind-power absorption capacity economy system, structure is improved by adding storage device an electric boiler. First, aiming at minimum cost optimal scheduling model including boiler, co...

Sulfur recirculation is a new technology for reducing boiler corrosion and dioxin formation. It was demonstrated in full-scale tests at a Waste to Energy plant in Göteborg (Sweden) during nearly two months of operation. Sulfur was recirculated as sulfuric acid from the flue gas cleaning back to the boiler, thus creating a sulfur loop. The new technology was evaluated by extensive measurement ca...

In a fertilizer plant, the steam boiler is the most important component. In order to keep the plant operating in the effective mode, the boiler efficiency must be observed continuously by several operators. When the trend of the boiler efficiency is going down, they may adjust the controlling parameters of the boiler to increase its efficiency. Since manual operation usually leads to unexpected...

Abstract The goal of the study is to investigate thermal behavior and benefits a cogeneration system based on two gas fired engines storage tank in biomass district heating situated Romania. investigation an hourly analytical model all components: boiler, natural engines, consumers. climatic data location are used as input model. coupled with heat increase flexibility allow production electrici...

Introduction Gasifying biomass to produce a combustible gas provides the possibility for much more efficient overall conversion of a given biomass resource into electric power than is possible with traditional combustion-based technologies. In particular, gasified biomass can be used to power internal combustion engines (ICEs), gas turbines, and fuel cells, all of which are able to produce elec...

The paper investigates the variation in building thermal energy demand for different indoor air set-point temperature and presents an economic analysis comparing cost of a heating generation system based on air-to-water heat pump gas boiler. Dynamic simulations were performed considering three residential characteristics Italian stock placed municipalities: Milan, Rome Naples. An was carried ou...