The role of the Latvian district heating system in the development of sustainable energy supply
The aim of the study is to determine whether and to what extent it is possible to use excess electricity produced by wind power plants during low demand periods for district heat production by heat pumps. Energy system analysis on an hourly basis is conducted at various capacities of wind power plan...
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| Vydané v: | Environmental and Climate Technologies Ročník 7; číslo 1; s. 27 - 31 |
|---|---|
| Hlavní autori: | , |
| Médium: | Journal Article |
| Jazyk: | English |
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Riga
Versita
2011
Riga Technical University |
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| ISSN: | 1691-5208, 2255-8837 |
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| Abstract | The aim of the study is to determine whether and to what extent it is possible to use excess electricity produced by wind power plants during low demand periods for district heat production by heat pumps. Energy system analysis on an hourly basis is conducted at various capacities of wind power plants. The results show that it is possible to increase the share of renewable energy sources, decrease the use of primary energy sources and CO2 emissions per unit of the produced energy, i.e. heat and electricity, by using the surplus electricity produced by wind power in the heat pumps combined with the heat storage.
Centralizētās siltumapgādes sistēmām nākotnē būs pieaugoša nozīme atjaunojamo energoresursu īpatsvara palielināšanā valsts energobilancē. Nozīmīgi pieaugot vēja elektrostaciju saražotās elektroenerģijas īpatsvaram elektroapgādes sistēmā, aktuāls kļūs jautājums par pārpalikuma elektroenerģijas izmantošanu zema patēriņa stundās. Tādēļ nepastāvīgas jaudas atjaunojamo energoresursu elektrību ražojošu avotu plašāka izmantošana un integrēšana energoapgādes sistēmās prasīs patērētājus, kuri elastīgi spēj mainīt patēriņu atbilstoši avotu piegādes iespējām. Centralizētās siltumapgādes sistēmas zināmā apmērā spēj būt elastīgs elektroenerģijas patērētājs un veikt nepastāvīgas jaudas atjaunojamo energoresursu tehnoloģiju ražotās elektroenerģijas izmantošanu. Darba mērķis ir izpētīt, kādā apmērā centralizētās siltumapgādes sistēmas spēj izmantot vēja elektrostaciju ražoto elektroenerģijas pārpalikumu zema patēriņa stundās, lietojot siltuma sūkņu un siltuma akumulatoru iekārtas. Izpētes uzdevums ir noteikt, vai un cik lielā mērā ir iespējams palielināt atjaunojamo energoresursu īpatsvaru un samazināt oglekļa dioksīda emisijas elektroenerģijas un centralizētās siltumenerģijas ražošanas procesā, izmantojot vēja ražoto elektroenerģiju siltuma sūkņu iekārtās. Centralizētās siltumapgādes un elektroapgādes sistēma ir pētīta, lietojot energosistēmu analīzes modelis “EnergyPLAN”, kurš ļauj analīzi veikt stundu griezumā, un analizēt dažādu tehnoloģiju kombinācijas. Darba rezultāti parāda, ka vēja elektrostaciju ražotās pārpalikuma elektroenerģijas lietošana siltuma ražošanai siltuma sūkņu iekārtās, kas apvienotas ar siltuma akumulatoriem centralizētās siltumapgādes sistēmās, ļauj samazināt primāro energoresursu patēriņu un CO2 emisijas, un palielināt atjaunojamo energoresursu īpatsvaru, rēķinot uz vienu saražotās enerģijas (siltuma un elektrības) vienību. |
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| AbstractList | The aim of the study is to determine whether and to what extent it is possible to use excess electricity produced by wind power plants during low demand periods for district heat production by heat pumps. Energy system analysis on an hourly basis is conducted at various capacities of wind power plants. The results show that it is possible to increase the share of renewable energy sources, decrease the use of primary energy sources and CO2 emissions per unit of the produced energy, i.e. heat and electricity, by using the surplus electricity produced by wind power in the heat pumps combined with the heat storage. The aim of the study is to determine whether and to what extent it is possible to use excess electricity produced by wind power plants during low demand periods for district heat production by heat pumps. Energy system analysis on an hourly basis is conducted at various capacities of wind power plants. The results show that it is possible to increase the share of renewable energy sources, decrease the use of primary energy sources and CO 2 emissions per unit of the produced energy, i.e. heat and electricity, by using the surplus electricity produced by wind power in the heat pumps combined with the heat storage. The aim of the study is to determine whether and to what extent it is possible to use excess electricity produced by wind power plants during low demand periods for district heat production by heat pumps. Energy system analysis on an hourly basis is conducted at various capacities of wind power plants. The results show that it is possible to increase the share of renewable energy sources, decrease the use of primary energy sources and CO2 emissions per unit of the produced energy, i.e. heat and electricity, by using the surplus electricity produced by wind power in the heat pumps combined with the heat storage. Centralizētās siltumapgādes sistēmām nākotnē būs pieaugoša nozīme atjaunojamo energoresursu īpatsvara palielināšanā valsts energobilancē. Nozīmīgi pieaugot vēja elektrostaciju saražotās elektroenerģijas īpatsvaram elektroapgādes sistēmā, aktuāls kļūs jautājums par pārpalikuma elektroenerģijas izmantošanu zema patēriņa stundās. Tādēļ nepastāvīgas jaudas atjaunojamo energoresursu elektrību ražojošu avotu plašāka izmantošana un integrēšana energoapgādes sistēmās prasīs patērētājus, kuri elastīgi spēj mainīt patēriņu atbilstoši avotu piegādes iespējām. Centralizētās siltumapgādes sistēmas zināmā apmērā spēj būt elastīgs elektroenerģijas patērētājs un veikt nepastāvīgas jaudas atjaunojamo energoresursu tehnoloģiju ražotās elektroenerģijas izmantošanu. Darba mērķis ir izpētīt, kādā apmērā centralizētās siltumapgādes sistēmas spēj izmantot vēja elektrostaciju ražoto elektroenerģijas pārpalikumu zema patēriņa stundās, lietojot siltuma sūkņu un siltuma akumulatoru iekārtas. Izpētes uzdevums ir noteikt, vai un cik lielā mērā ir iespējams palielināt atjaunojamo energoresursu īpatsvaru un samazināt oglekļa dioksīda emisijas elektroenerģijas un centralizētās siltumenerģijas ražošanas procesā, izmantojot vēja ražoto elektroenerģiju siltuma sūkņu iekārtās. Centralizētās siltumapgādes un elektroapgādes sistēma ir pētīta, lietojot energosistēmu analīzes modelis “EnergyPLAN”, kurš ļauj analīzi veikt stundu griezumā, un analizēt dažādu tehnoloģiju kombinācijas. Darba rezultāti parāda, ka vēja elektrostaciju ražotās pārpalikuma elektroenerģijas lietošana siltuma ražošanai siltuma sūkņu iekārtās, kas apvienotas ar siltuma akumulatoriem centralizētās siltumapgādes sistēmās, ļauj samazināt primāro energoresursu patēriņu un CO2 emisijas, un palielināt atjaunojamo energoresursu īpatsvaru, rēķinot uz vienu saražotās enerģijas (siltuma un elektrības) vienību. The aim of the study is to determine whether and to what extent it is possible to use excess electricity produced by wind power plants during low demand periods for district heat production by heat pumps. Energy system analysis on an hourly basis is conducted at various capacities of wind power plants. The results show that it is possible to increase the share of renewable energy sources, decrease the use of primary energy sources and CO2 emissions per unit of the produced energy, i.e. heat and electricity, by using the surplus electricity produced by wind power in the heat pumps combined with the heat storage. Centralizētās siltumapgādes sistēmām nākotnē būs pieaugoša nozīme atjaunojamo energoresursu īpatsvara palielināšanā valsts energobilancē. Nozīmīgi pieaugot vēja elektrostaciju saražotās elektroenergijas īpatsvaram elektroapgādes sistēmā, aktuāls kļūs jautājums par pārpalikuma elektroenergijas izmantošanu zema patēriņa stundās. Tādēļ nepastāvīgas jaudas atjaunojamo energoresursu elektrību ražojošu avotu plašāka izmantošana un integrēšana energoapgādes sistēmās prasīs patērētājus, kuri elastīgi spēj mainīt patēriņu atbilstoši avotu piegādes iespējām. Centralizētās siltumapgādes sistēmas zināmā apmērā spēj būt elastīgs elektroenergijas patērētājs un veikt nepastāvīgas jaudas atjaunojamo energoresursu tehnologiju ražotās elektroenergijas izmantošanu. Darba mērķis ir izpētīt, kādā apmērā centralizētās siltumapgādes sistēmas spēj izmantot vēja elektrostaciju ražoto elektroenergijas pārpalikumu zema patēriņa stundās, lietojot siltuma sūkņu un siltuma akumulatoru iekārtas. Izpētes uzdevums ir noteikt, vai un cik lielā mērā ir iespējams palielināt atjaunojamo energoresursu īpatsvaru un samazināt oglekļa dioksīda emisijas elektroenergijas un centralizētās siltumenergijas ražošanas procesā, izmantojot vēja ražoto elektroenergiju siltuma sūkņu iekārtās. Centralizētās siltumapgādes un elektroapgādes sistēma ir pētīta, lietojot energosistēmu analīzes modelis "EnergyPLAN", kurš ļauj analīzi veikt stundu griezumā, un analizēt dažādu tehnologiju kombinācijas. Darba rezultāti parāda, ka vēja elektrostaciju ražotās pārpalikuma elektroenergijas lietošana siltuma ražošanai siltuma sūkņu iekārtās, kas apvienotas ar siltuma akumulatoriem centralizētās siltumapgādes sistēmās, ļauj samazināt primāro energoresursu patēriņu un CO2 emisijas, un palielināt atjaunojamo energoresursu īpatsvaru, rēķinot uz vienu saražotās energijas (siltuma un elektrības) vienību. Системы централизованного теплоснабжения в будущем будут иметь все большее значение в увеличений доли возобновляемых энергоресурсов в народном энергетическом балансе. При значительном увеличением доли электроэнергии, произведённой ветровыми электростанциями в энергосистеме, станет актуальным вопрос об использовании избыточной электроэнергии в часы низкого потребления. Таким образом, расширенное использование и интегрирование в энергетические системы возобновляемых источников энергии с изменчивым характером производства потребует потребителей, которые могут гибко изменять потребление в соответствии с возможностями поставки энергий от этих источников. Системы централизованного теплоснабжения до некоторой степени в состоянии быть гибким потребителем и использовать электричество, произведённое технологиями возобновляемых энергоресурсов. Цель работы состоит в исследовании, в какой степени системы централизованного теплоснабжения могут использовать избыток электроэнергии, произведённый ветровыми электростанциями в часы низкого потребления, используя тепловые насосы и теплоаккумулирующие установки. Исследование заключается в определении того, до какой степени это позволило бы увеличить долю возобновляемых энергоресурсов и сократить выбросы углекислого газа от производственных процессов электро- и теплоэнергий, с помощью использованния электроэнергии, произведённой ветровыми электростанциями в установках тепловых насосов. Системы централизованного теплоснабжения и электроэнергетики исследованы с использованием модели анализа энергосистем "EnergyPLAN", которая позволяет проводить анализ в часовом разрезе и анализировать различные комбинации технологий. Результаты показывают, что использованние избыточной электроэнергии произведённой ветровыми электростанциями в оборудованиях тепловых насосов, в сочетании с тепловыми аккумуляторами в системах централизованного теплоснабжения могут сократить потребление первичных энергоресурсов и выбросов С02, а также увеличить долю возобновляемых энергоресурсов относительно единицы производимой энергий (тепловой и электрической). |
| Author | Bazbauers, G., Riga Technical Univ. (Latvia) Cimdina, G., Riga Technical Univ. (Latvia) |
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| Cites_doi | 10.1016/j.energy.2011.05.007 10.1016/j.renene.2005.04.008 10.1016/j.enconman.2009.01.032 |
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| SubjectTerms | Alternative energy sources BOMBA DE CALOR CALENTAMIENTO CARBON DIOXIDE Carbon dioxide emissions CHAUFFAGE Climate CONSERVACION DE LA ENERGIA CONSOMMATION D'ENERGIE CONSUMO DE ENERGIA Consumption DIOXIDO DE CARBONO DIOXYDE DE CARBONE District heating DURABILITE ECONOMIE D'ENERGIE Electric power generation ELECTRICAL ENERGY Electricity Electricity consumption EMISSIONS ENERGIA ELECTRICA ENERGIA EOLICA ENERGIA RENOVABLE ENERGIA TERMAL ENERGIE ELECTRIQUE ENERGIE EOLIENNE ENERGIE RENOUVELABLE ENERGIE THERMIQUE ENERGY CONSERVATION ENERGY CONSUMPTION ENERGY GENERATION Energy industry Energy resources Energy sources GENERACION DE ENERGIA Heat exchangers HEAT PUMPS Heat storage HEATING http://www.fao.org/aos/agrovoc#c_12103 http://www.fao.org/aos/agrovoc#c_1302 http://www.fao.org/aos/agrovoc#c_16121 http://www.fao.org/aos/agrovoc#c_24398 http://www.fao.org/aos/agrovoc#c_24836 http://www.fao.org/aos/agrovoc#c_2567 http://www.fao.org/aos/agrovoc#c_25719 http://www.fao.org/aos/agrovoc#c_28005 http://www.fao.org/aos/agrovoc#c_31905 http://www.fao.org/aos/agrovoc#c_331377 http://www.fao.org/aos/agrovoc#c_33560 http://www.fao.org/aos/agrovoc#c_3524 http://www.fao.org/aos/agrovoc#c_6513 http://www.fao.org/aos/agrovoc#c_7523 http://www.fao.org/aos/agrovoc#c_8394 Industrial plant emissions INVESTIGACION LATVIA LETONIA LETTONIE OFERTA OFFRE POMPE A CHALEUR Power plants PRODUCTION ENERGETIQUE RECHERCHE RENEWABLE ENERGY Renewable energy sources Renewable resources SOSTENIBILIDAD SUPPLY SUSTAINABILITY Sustainable development Sustainable energy Systems analysis THERMAL ENERGY WIND POWER Wind power generation |
| Title | The role of the Latvian district heating system in the development of sustainable energy supply |
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