The object of research is the technological process burning pellets in boilers. Using solid fuel boilers on for heat production, they are trying to reduce dependence hydrocarbon energy resources. Often such installed autonomous heating schools and other communal facilities. One most problematic areas analysis environmental impact when using as a municipal boiler houses urban areas. Boilers oper...

Abstract The paper presents research results for NO X reduction moderate incomplete combustion, its impact on the environment and boiler reliability, optimal combustion conditions criteria, implementation in operating steam hot-water boilers. authors pay additional attention to cost efficiency criterion while analysing best method reducing . After conducting a numerical calculation processes un...

This paper compares various flexibility options to support renewable energy integration across the transition using system modelling. We analyse new assets such as electricity storage, heat pumps, demand-side response with existing wet appliances, electric boilers for domestic hot water and distribution grid expansion, along efficiency measures in electrical appliances building retrofitting. pr...

Air-to-water heat pumps (HPs) are widely installed in new buildings; however, they face performance degradation with high temperature emission systems, which is typical of existing buildings, or during domestic hot water (DHW) production. Hybrid systems (HSs), composed by air-to-water HPs and gas-fired boilers, can mitigate these issues increasing the overall system efficiency. HS strictly depe...

In a previous work, significant contribution to urban air pollution, related fuel-fired heating systems, was recorded. Thus, the replacement of existing boilers for space and domestic hot water (DHW) production systems with high-temperature air/water heat pumps (which can operate radiators, most common terminals in building stock), is proposed improvement quality. Scenarios substitution within ...

This paper investigates the possibility of autoignition as a flashback initiation mechanism in laminar premixed burners powered by an increasing content hydrogen fuel blend. A specific experimental setup provides optical access inside generic burner reproducing main features domestic boilers. window is used to gather high-speed intensified images during transition flashback. Zooms into location...

The mutagenicity of emission samples from three oil-fired and four coal-fired boilers have been compared by using the Salmonella/microsome assay. Very little or no mutagenic activity was observed in samples from five of these boilers. The sample from one oil-fired boiler showed mutagenic activity of about 500 revertants/MJ, and the sample from a coal-fired fluidized bed combustor had an activit...

The system is made with main distributed components: First Level: Industrial Computers placed in Control Room (monitors thermal and electrical processes based on the data provided by the second level); Second Level: PLCs which collects data from process and transmits information on the first level; also takes commands from this level which are further, passed to execution elements from third le...

There is growing use of wood pellet and wood chip boilers in the UK. Elsewhere fatalities have been reported, caused by carbon monoxide poisoning following entry into wood pellet storage areas. The aim of this work was to obtain information on how safely these two fuels are being stored in the UK. Site visits were made to six small-scale boiler systems and one large-scale pellet warehouse, to a...

The primary energy consumption in residential buildings is determined by the envelope thermal characteristics, air change, outside climatic data, users’ behaviour and the adopted heating system and its control. The new Italian regulations strongly suggest the installation of centralized boilers in renovated buildings with more than four apartments. This work aims to investigate the differences ...