Micro Combined Heat and Power to provide heat and electrical power using biomass and Gamma-type Stirling engine

Damirchi, Hojjatollah; Najafi, G.; Alizadehnia, Siamak; Mamat, R.; Azwadi, C. S. Nor; Azmi, W.H.; Noor, M. M.

doi:10.1016/j.applthermaleng.2016.04.118

Cited by 54 publications

(19 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results of the main physical and chemical analysis of the investigated pellets are shown in Table 1. Higher heating values of pellets were between 17.5 MJ·kg −1 and 23.3 MJ·kg −1 , and were close to the typical values for biomass fuel presented in other literature [45,46]. The highest value was reached for mix of fine coal and straw.…”

Section: Technical and Chemical Characteristicssupporting

confidence: 87%

The Influence of Freezing Temperature Storage on the Mechanical Durability of Commercial Pellets from Biomass

Dyjakon

Noszczyk

2019

Energies

View full text Add to dashboard Cite

The interest in pellets utilization for households heating has been growing significantly in the last several years. However, the pellets need to meet certain quality requirements, including the mechanical durability (DU) index. In the winter seasons, the pellets are very often stored in unheated in-door systems or are transported by trucks over long distances. As a result, the pellets are exposed to external weather factors, including very low temperatures (even freezing ones), which can have a negative impact on the quality parameters of the fuel. There are several parameters affecting mechanical durability, but little is known about the influence of a very low temperature on the pellet properties. The aim of this research was to analyze the influence of freezing temperature storage on the mechanical durability of commercial pellets made of different biomass. The research was carried out in accordance with the international standard for solid biofuels PN-EN ISO 17831-1:2016-02. The samples were investigated under three different conditions: after normal storage conditions (20 °C), after frozen storage conditions (−28 °C) and after the defrosting of the pellets. The results revealed that the freezing process and subsequent defrosting of the pellets only causes a small drop in their mechanical durability in comparison to the normal storage conditions. The highest mechanical durability was established for digestate pellet and pine sawdust pellet, at 99.0 ± 0.1% and 98.7 ± 0.1% respectively (p < 0.05). The greatest change of mechanical durability was observed after the defrosting process of pellets, which in the initial stage and at the normal storage temperature were characterized by low mechanical durability. The pellets made of sunflower husk (DU = 87.4%) and coal/straw blend (DU = 96.2%) were distinguished by the highest change in their mechanical durability (ΔDU = 1.7%, p < 0.05). Based on the obtained results, it was concluded that the storage of pellets at freezing temperature does not significantly affect their mechanical durability. However, if the mechanical durability decreases, this result is related to pellets with low initial mechanical durability.

show abstract

Section: Technical and Chemical Characteristicssupporting

confidence: 87%

The Influence of Freezing Temperature Storage on the Mechanical Durability of Commercial Pellets from Biomass

Dyjakon

Noszczyk

2019

Energies

View full text Add to dashboard Cite

show abstract

“…Micro Combined Heat and Power to provide heat and electrical power using biomass and Gamma-type Stirling engine [22] Micro co generation Gamma type…”

Section: Double Acting Four Cylinders Alphamentioning

confidence: 99%

Stirling Engine Configuration Selection

Egas

Clucas

2018

Energies

View full text Add to dashboard Cite

Unlike internal combustion engines, Stirling engines can be designed to work with many drive mechanisms based on the three primary configurations, alpha, beta and gamma. Hundreds of different combinations of configuration and mechanical drives have been proposed. Few succeed beyond prototypes. A reason for poor success is the use of inappropriate configuration and drive mechanisms, which leads to low power to weight ratio and reduced economic viability. The large number of options, the lack of an objective comparison method, and the absence of a selection criteria force designers to make random choices. In this article, the pressure-volume diagrams and compression ratios of machines of equal dimensions, using the main (alpha, beta and gamma) crank based configurations as well as rhombic drive and Ross yoke mechanisms, are obtained. The existence of a direct relation between the optimum compression ratio and the temperature ratio is derived from the ideal Stirling cycle, and the usability of an empirical low temperature difference compression ratio equation for high temperature difference applications is tested using experimental data. It is shown that each machine has a different compression ratio, making it more or less suitable for a specific application, depending on the temperature difference reachable.

show abstract

“…Three different types of engine are installed within a micro-CHP system. Stirling Engines offer a low pollutant emissions and high combustion efficiency solution for a micro-CHP system [78]. They also have a low running cost and long maintenance intervals due to operating without valves [35].…”

Section: Micro Combined Heat and Powermentioning

confidence: 99%

A review on house design with energy saving system in the UK

Xie

Gilmour

Yuan

et al. 2017

Renewable and Sustainable Energy Reviews

View full text Add to dashboard Cite

As part of EU incentives, the UK government have set ambitious environmental targets relating to energy consumption including a reduction of carbon emissions of 80% by 2050. The use of various technologies can help meet these targets as well as providing a secure energy source for the UK in the future. This research took the UK as a case study and investigated where reduction measures are most suited to reduce energy consumption. This paper presents a review on the current state-of-the-art on the domestic technology available, in particular solar energy, heat pumps, phase changing materials (PCMs) and micro combined heat and power (micro-CHP) systems, aiming at identifying research and development opportunities for energy saving in these fields. Furthermore, the financial as well as environmental aspects are assessed as these are the two key considerations of typical household. A typical UK house design, including the floor plan, is created through the use of computer aided design (CAD) software. The house design gives a payback period between 8.7 years at best and 11.6 years at worst.

show abstract

Micro Combined Heat and Power to provide heat and electrical power using biomass and Gamma-type Stirling engine

Cited by 54 publications

References 25 publications

The Influence of Freezing Temperature Storage on the Mechanical Durability of Commercial Pellets from Biomass

The Influence of Freezing Temperature Storage on the Mechanical Durability of Commercial Pellets from Biomass

Stirling Engine Configuration Selection

A review on house design with energy saving system in the UK

Contact Info

Product

Resources

About