Annual Energy Consumption Cut-Off with Cooling System Design Parameter Changes in Large Office Buildings
| العنوان: | Annual Energy Consumption Cut-Off with Cooling System Design Parameter Changes in Large Office Buildings |
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| المؤلفون: | Hwan-yong Kim, Young-hak Song, Ju-wan Ha, Soolyeon Cho |
| المصدر: | Energies, Vol 13, Iss 2034, p 2034 (2020) Energies Volume 13 Issue 8 |
| بيانات النشر: | MDPI AG, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Chiller, Control and Optimization, 020209 energy, Energy Engineering and Power Technology, chilled water, 02 engineering and technology, 010501 environmental sciences, lcsh:Technology, 01 natural sciences, low-temperature condenser water, energy consumption, Chilled water, HVAC, 0202 electrical engineering, electronic engineering, information engineering, ASHRAE 90.1, Water cooling, Cooling tower, Electrical and Electronic Engineering, Engineering (miscellaneous), Condenser (heat transfer), 0105 earth and related environmental sciences, lcsh:T, Renewable Energy, Sustainability and the Environment, business.industry, Environmental engineering, large office, Air conditioning, cooling tower control, Environmental science, business, Energy (miscellaneous) |
| الوصف: | A variety of greenhouse gas reduction scenarios have been proposed around the world to ensure sustainable developments and strengthen the global response to the climate change. To cope with this, it is urgently needed to reduce the amount of energy used for the heating, ventilating, air conditioning, and refrigerating (HVAC& R) systems in large buildings. This study discusses the reduction of cooling energy in large office buildings through the minimization of changes in components and equipment, such as heat source equipment and pumps, changes in the layout and operating methods of chilled water circulation pumps, and changes in the temperatures of chilled and condenser water. To do this, this study targeted an entire cooling system consisting of a hydronic system, a chiller, and a cooling tower, and conducted a quantitative analysis of the energy consumption and of the reduction achieved through a change in the pumping system type in the cooling system and a change in the Korean standard design and temperature of chiller and cooling tower via EnergyPlus simulations. The simulation results showed a cooling energy reduction of 103.2 MWh/yr, around 15.7%, where the primary constant-speed system (Case A) was changed to a primary variable-speed pump (Case B) in the configuration with a chilled water circulation pump. To reduce the cooling energy further, annually 142.3 MWh, around 21.7%, Case C in this study changed the outlet temperature of the chiller and temperature difference from 7 ° C, 5 K to 9 ° C, 9 K. Finally, when applying a change in the condenser water production temperature from 32 to 23.9 ° C in accordance with ASHRAE Standard 90.1 for Case D, a cooling energy saving of 182.4 MWh/yr was observed, which is about 27.8%. |
| وصف الملف: | application/pdf |
| تدمد: | 1996-1073 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95beae605ff69787d223463140f1bf0e https://doi.org/10.3390/en13082034 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....95beae605ff69787d223463140f1bf0e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19961073 |
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