Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Jozef Jandacka"'
Publikováno v:
Applied Sciences, Vol 13, Iss 5, p 3053 (2023)
The burning of low-quality fuels causes several problems in the operation of combustion equipment, which can negatively affect the equipment’s efficiency. The possibilities for the burning of pellets made from low-quality raw materials are limited
Externí odkaz:
https://doaj.org/article/7df74ff923d14b6fb27f4eb4270e1284
Publikováno v:
EAI Endorsed Transactions on Energy Web, Vol 8, Iss 32 (2021)
Accumulation of primary energy of natural gas is a perspective option to store natural gas as artificially created hydrate, where this matter can be stored and, if necessary, can be released to cover energy peaks. Gas can be stored this way at partia
Externí odkaz:
https://doaj.org/article/09ed0252648b4428a373bff71a89e70c
Publikováno v:
Communications, Vol 19, Iss 2A, Pp 94-100 (2017)
The combustion of biomass is relatively complicated. To minimize the emission production it is necessary to ensure the optimal setting of combustion process. The article deals with the impact of bark content in wood biomass on performance and emissio
Externí odkaz:
https://doaj.org/article/cff321da50284717a676842cbd4b4d5e
Publikováno v:
Communications, Vol 18, Iss 1A, Pp 115-121 (2016)
The paper presents a numerical model of heat transport from melting charge of the electric arc furnace designed for ferroalloy production, into a cooled roof of the electric arc furnace from which waste heat is led to the heating system of a company.
Externí odkaz:
https://doaj.org/article/6e46a2bd45844733af2c09438b87bf74
Publikováno v:
Advances in Electrical and Electronic Engineering, Vol 14, Iss 1, Pp 11-17 (2016)
Nowadays, the most used biofuel in Slovak republic is log wood. Alternatively, there are also biofuels based on vegetal biomass (phytomass) like wheat straw or grass. The advantage of these biofuels is lower cost price because they are usually consid
Externí odkaz:
https://doaj.org/article/79e8ef9517cc4450979d211babb7ff4e
Publikováno v:
Communications, Vol 17, Iss 4, Pp 34-39 (2015)
Combustion of the solid fuel in the burner is an important issue when discussing the CFD simulation of combustion in automatic boiler. In the present work is employed a simplified method for modeling the fuel bed, which is based on mass and heat bala
Externí odkaz:
https://doaj.org/article/14fca1e1c5df4e75b56c1a183f4a0d8c
Publikováno v:
BioResources, Vol 11, Iss 1, Pp 44-53 (2015)
Woody biomass is an abundant, renewable energy source. Forest residue is the fraction remaining after harvest and the outtake of wood timber, including tree tops and bark. Compared with the wood portion, bark has a wide variation of ash content. Wood
Externí odkaz:
https://doaj.org/article/a9c562f93a4d434aa9b1bbc35d6e559e
Publikováno v:
Energies, Vol 13, Iss 16, p 4133 (2020)
Even though this discovery dates back to 1816, the greatest advancement in technology and understanding of Stirling-cycle devices has occurred in the last 50 years. Although their mass production is currently limited to special-purpose machines, its
Externí odkaz:
https://doaj.org/article/9d139f007a834d90b756f8b5b72809ba
Publikováno v:
Communications, Vol 17, Iss 3, Pp 4-11 (2015)
The paper presents a new criterion equation for calculating the Nusselt number for heat transport by natural convection from different numbers of cylindrical surfaces of heating sources. Horizontal cylindrical surfaces are situated one above the othe
Externí odkaz:
https://doaj.org/article/ed68d2ee2d5944619d8061f5bd0b5418
Autor:
Michal Holubcik, Jozef Jandacka
Publikováno v:
Communications, Vol 16, Iss 3A, Pp 48-53 (2014)
Some types of biomass ash have low ash melting temperature which can result in various problems in combustion processes. Ash slags and sinters can avoid heat transfer in heat exchangers, which can also cause corrosion of heat transfer surfaces. One o
Externí odkaz:
https://doaj.org/article/2aa946c7863648ac8a08cd5a8627a5ff