Wyniki wyszukiwania - BazTech

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Влияние результатов термомодернизации зданий и сооружений городской застройки на режимы работы источников теплоты систем централизованного теплоснабжения

Glamazdin P.M., Glamazdin D.P., Schwarzenberger R.

Zeszyty Naukowe Politechniki Częstochowskiej. Budownictwo

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2018

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Z. 24 (174)

73-79

RU

В статье представлены проблемы связанные с изменением режимов работы источников теплоты систем централизованного теплоснабжения зданий и сооружений городской застройки, в условиях Украины, в результате проведения термомодернизационных мероприятий. Отмечена необходи- мость проведения глубокой модернизации систем централизованного теплоснабжения городов Украины. Предложены основные направления и частные решения по усовершенствованию работы систем теплоснабжения городов. Подчёркнута необходимость модернизации и реконструкции водогрейных котельный, как неотъемлемой части СЦТ. При реконструкции отопительных котель-ный очень важно учитывать изменения, происшедшие в нагрузке, в сторону её уменьшения на горячее водоснабжение. С случае реконструкции котлов малой производительности предпочти-тельна замена их на новые, жаротрубные–дымогарные. В районных котельных и станциях теплоснабжения предпочтительными вариантами являются модернизация существующих котлов и устройство дополнительного котла меньшой мощности для покрытия нагрузки на горячее водоснабжение в летнее время. Выбор направления модернизации или реконструкции должен осуществляться на основе обязательного технико–экономического обоснования.

EN

The article presents the problems associated with the change of modes of heat sources of district heating systems of buildings and structures of urban development, in the conditions of Ukraine, as a result of thermal modernization measures. The necessity of deep modernization of district heating systems in Ukrainian cities was noted. The main directions and private decisions on improvement of work of systems of heat supply of the cities are offered. The necessity of modernization and reconstruction of water–heating boiler houses as an integral part of central supply heating system is emphasized. At reconstruction of heating boiler rooms it is very important to consider the changes which have occurred in loading, towards its reduction on hot water supply. In the case of reconstruction of low–capacity boilers, it is preferable to replace them with new. In district boilers and heat supply stations, the preferred options are the modernization of existing boilers and the installation of an additional boiler of lower capacity to cover the load on the hot water supply in the summer. The choice of the direction of modernization or reconstruction should be based on a mandatory feasibility study.

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Evaluation of a biomass based district heating system integrated with a Stirling engine

Skorek-Osikowska A., Uchman W., Kotowicz J.

Journal of Power Technologies

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2017

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Vol. 97, nr 5

388--394

EN

District heating (DH) systems in the European Union in common with other energy generation systems are subject to various regulatory and political pressures to be energy efficient and, to the extent possible, based on renewable energy sources (RES) out of environmental concerns. This paper proposes an innovative cogeneration configuration for a DH network, consisting of a biomass gasification unit, heat recovery system, high temperature purification unit and a Stirling engine for electricity generation. The system produces heat from biomass and generates the electricity that is needed for the purposes of auxiliary equipment and to cover pressure losses in the system. As such, the network may be 100% based on renewable energy source. This paper presents a thermodynamic analysis of the proposed solution. A detailed mathematical model of the system was built to carry out the analyses and calculate basic thermodynamic evaluation indices.

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Design of heating and hot water supply system like a power of low-temperature heating utilization in combination with solar collectors

Jasminska N.

Budownictwo o Zoptymalizowanym Potencjale Energetycznym

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2013

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nr 1(11)

34--43

EN

The low-potential sources in combination with solar devices used in supply heating systems present a perspective alternative to fossil energy in both economic and environmental point of view. The issue of low-temperature heating and renewable energy sources at present, when humanity stands on the threshold of fuel-energy sources selection, is extraordinarily important. Currently the solar energy, geothermal water energy and environmental energy used in supply of heating systems with low-energy potential present a perspective alternative in comparison to limited fossil energy. The energy utilization appropriateness depends on geographic area and climate zone. The article presents and solves the design issue of low-temperature heat pump system in combination with solar panel devices.

PL

Niskotemperaturowe źródła w połączeniu z urządzeniami słonecznymi w systemach ogrzewania stanowią perspektywicznie alternatywę dla paliw kopalnych z punktu widzenia ekonomicznego i środowiskowego. Kwestia niskotemperaturowego ogrzewania i odnawialnych źródeł energii jest w chwili obecnej, kiedy ludzkość stoi na progu paliwowo-energetycznego doboru źródeł, niezwykłe ważna. Obecnie energia słoneczna, geotermalna i inne źródła niekonwencjonalne wykorzystywane w systemach ciepłowniczych są alternatywą w porównaniu do ograniczonych zasobów energii z paliw kopalnych. Wykorzystanie energii jest uzależnione od obszaru geograficznego i strefy klimatycznej. Artykuł przedstawia rozwiązanie niskotemperaturowego systemu pompy ciepła w połączeniu z panelami słonecznymi.

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Projekty unijne realizowane z udziałem Pracowni Odnawialnych Źródeł Energii IGSMiE PAN - „Promowanie systemów geotermalnego centralnego ogrzewania w Europie”

Kępińska B., Kasztelewicz A.

Przegląd Geologiczny

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2012

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Vol. 60, nr 11

585–-586

EN

Since April 2012, the Division of Renewable Energy Sources of the Mineral and Energy Economy Research Institute of the Polish Academy of Sciences has been participating in the EU Project called Promote Geothermal District Heating Systems in Europe (GEODH) within the frame of Intelligent Energy Europe Program. The Project will last 30 months and aims to accelerate the market penetration by geothermal energy in district heating systems in Europe. This shall be achieved by addressing and removing regulatory, financial and market barriers at regional and local levels - adequate proposals will be developed and then presented to relevant decision makers in all countries embraced by the Project. The GEODH gathers 10 partners representing 14 countries, was initiated and is coordinated by the European Geothermal Energy Council (EGEC). The activities will focus on seven Central and Eastern European member states (including Poland) and on seven old member states. The purpose of the Project is directly coupled with a long-term perspective of increasing the uptake ofgeothermal district heating in the heat market by 2020 (following 3x20 set ofEU directives) through the improvement and expansion of geothermal district heating systems in European countries. Moreover, geothermal energy is still in a shadow of other renewable energy sources on our continent, but does creates a prospective source for many district heating systems, which can significantly contribute to achieve 20% of renewables in final energy consumption in EU by 2010.

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System centralnego ogrzewania i jego wpływ na zużycie ciepła do ogrzewania budynków

Lis P., Lis A.

Budownictwo o Zoptymalizowanym Potencjale Energetycznym

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2012

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nr 1(9)

54--67

PL

W artykule wykorzystano wyniki badań własnych prowadzonych w budynkach edukacyjnych. Dla scharakteryzowania systemów centralnego ogrzewania w badanych budynkach poddano analizie kilka cech zasadniczych dla systemu ogrzewania. Zaliczono do nich: rodzaj źródła zasilania w ciepło instalacji centralnego ogrzewania, eksploatację instalacji, wyposażenie systemu centralnego ogrzewania w urządzenia i automatykę regulacyjną, charakterystykę źródła ciepła w kotłowniach własnych oraz eksploatację indywidualnego źródła ciepła.

EN

This paper describes central heating systems in the studied educational buildings. The analysis considers a few basic features of a heating system. They include: the type of power source, exploitation and equipment of central heating system and characteristics of the heat source.