Uporaba ukapljenega zemeljskega plina v gorivnih celicah

Groznik, Jan (author), Sekavčnik, Mihael (mentor)

V prihodnosti bo vodik postal eden od nosilcev energije, saj ga lahko pridobivamo iz vseh primarnih – obnovljivih in tudi neobnovljivih – virov energije, njegova uporaba v gorivnih celicah pa omogoča proizvodnjo električne energije z visokim izkoristkom. Problem pri uporabi vodika je, da se v naravi ne nahaja v stabilni molekulski obliki, zato ga je trenutno najbolj energetsko smiselno pridobiti z reformiranjem zemeljskega plina oz. metana. Ukapljen zemeljski plin je ena od oblik shranjevanja zemeljskega plina, vendar zaradi vdora toplote v rezervoar vedno izpareva, zato je, zaradi stabilnosti rezervoarja, plin potrebno odvajati. Delovanje gorivnih celic v povezavi z metanom smo predstavili na primeru plina, ki ga odvajamo iz rezervoarja. Ocenili smo smiselnost uporabe gorivnih celic iz energetskega, okoljskega in ekonomičnega smisla, ki bo omogočala nadaljnje raziskave in simulacije na področju uporabe gorivnih celic v povezavi z ukapljenim zemeljskim plinom, predvsem za kogeneracijo električne energije in toplote.

• Language: Slovenian
• Keywords: Ukapljen zemeljski plin, Gorivne celice, Vodik, Odparjen plin, Kogeneracija
• Work type: Bachelor thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2017
• PID: 20.500.12556/RUL-95475
• Publication date in RUL: 20.09.2017

Secondary language

• Language: English
• Title: Use of liquefied natural gas in fuel cells

Abstract

Hydrogen will become one of energy carriers in future, because it is possible to get it from all primary energy sources, both renewable and unrenewable. Hydrogen use with fuel cells enables generation of electricity with high efficiency. Since hydrogen does not exist in nature in a stable molecular form, it is necessary to get it from reforming - the most efficient way is to use steam reforming to transform natural gas or methane into hydrogen. Liquefied natural gas is one of the forms to storage natural gas, but because of heat transfer there is always an emergence of boil-off gas which needs to be removed. The operation of fuel cell on methane was represented through the example of boil-off gas. We evaluated the feasibility of using a fuel cell from the energetic, environmental and economic perspective. This feasibility study will enable further research and simulations of using fuel cells in applications with liquefied natural gas, especially in terms of combined heat and power.

• Keywords: Liquefied natural gas, Fuel cells, Hydrogen, Boil-off gas, Combined heat and power