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Articolul precedent |
Articolul urmator |
157 1 |
Ultima descărcare din IBN: 2023-09-01 21:53 |
Căutarea după subiecte similare conform CZU |
697.34 (21) |
Instalaţii de încălzire, ventilare și aer condiționat în construcții (61) |
SM ISO690:2012 СУВОРОВ, Дмитрий, ТАТАРИНОВА, Наталья, ЛЫСКОВА, Екатерина. Исследование эффективности работы систем теплоснабжения с паротурбинными ТЭЦ при учете изменения температуры сетевой воды при транспортировке. In: Problemele Energeticii Regionale, 2023, nr. 3(59), pp. 54-70. ISSN 1857-0070. DOI: https://doi.org/10.52254/1857-0070.2023.3-59.06 |
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Problemele Energeticii Regionale | ||||||
Numărul 3(59) / 2023 / ISSN 1857-0070 | ||||||
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DOI:https://doi.org/10.52254/1857-0070.2023.3-59.06 | ||||||
CZU: 697.34 | ||||||
Pag. 54-70 | ||||||
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The aim of the work is to study the efficiency of steam turbine CHPPs in heat-supply sys-tems, taking into account changes in the temperature of delivery water during transportation for vari-ous initial and extended heating regulation schedules. To achieve this goal, the following tasks were solved: calculation of the dependences of the delivery water cooling in the supply and return pipelines on the air temperature, construction of temperature and flow rate schedules of delivery water adjusted for heat losses during transportation, calculation of energy efficiency indicators for the operation of a model CHPP with various options for correcting schedules of delivery water. The most significant re-sults are the following. Firstly, for the first time the method of the degree-by-degree calculation of heat losses during transportation and their distribution between pipelines of heating networks was used. Secondly, the dependences of the delivery water cooling in these pipelines on the outside air tempera-ture are calculated. Thirdly, it has been established that the specific reference fuel consumption for electricity supply significantly decreases when switching to more efficient temperature schedules for heating regulation, but changes slightly when switching from natural regulation by flow rate to regula-tion by the temperature of the delivery water. The significance of the obtained results lies in the possi-bility of their use for an accurate assessment of the efficiency of heat supply systems with different heating control schedules and for determining the feasibility of correcting temperature schedules in order to take into account the cooling of delivery water during transportation. |
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Cuvinte-cheie heat-supply system, heating load, heat-transfer agent transportation, temperature schedule, CHPP, delivery water cooling, sistem de alimentare cu căldură, sarcină de încălzire, transport lichid de răcire, grafic de temperatură, Cogenerare, răcire cu apă din rețea, система теплоснабжения, отопительная нагрузка, транспортировка теплоносителя, температурный график, ТЭЦ, остывание сетевой воды |
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