Comparative Analysis of Combined Heating Systems Involving the Use of Renewable Energy for Greenhouse Heating
| Autor: | Chung-Geon Lee, Sunyong Park, Dae Hyun Kim, Seok-Jun Kim, La-Hoon Cho |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Thermal efficiency
Technology Control and Optimization hydrothermal heat pump pellet boiler Energy Engineering and Power Technology Greenhouse Environmental pollution macromolecular substances law.invention stomatognathic system law hybrid heating system greenhouse Electrical and Electronic Engineering Engineering (miscellaneous) solar heat collection Waste management Renewable Energy Sustainability and the Environment business.industry musculoskeletal neural and ocular physiology Fossil fuel Energy consumption social sciences Renewable energy Life-cycle cost analysis nervous system Environmental science business Energy (miscellaneous) Heat pump |
| Zdroj: | Energies Volume 14 Issue 20 Energies, Vol 14, Iss 6603, p 6603 (2021) |
| ISSN: | 1996-1073 |
| DOI: | 10.3390/en14206603 |
| Popis: | The continued use of fossil fuels is contributing to severe environmental pollution and the establishment of an abnormal climate consequently, alternative renewable energy sources are being actively investigated worldwide. Further, following global trends, numerous countermeasures aimed at improving carbon neutrality, promoting sustainable agriculture, and reducing fossil fuel dependence are being implemented in the Republic of Korea. Therefore, this study was conducted to investigate the application of renewable energies for greenhouse heating in the Republic of Korea. Three hybrid systems, numbered 1–3, were constructed using a pellet boiler, hydrothermal heat pump, and solar heat collection system, respectively. Thereafter, the heating performance, combined heat efficiency, energy consumption per temperature lifting, and energy cost per temperature lifting of the systems were compared. The combined thermal efficiency results showed no significant differences. However, in terms of energy consumption and cost, hybrid system 1 demonstrated 25.7 and 24.1% savings, respectively, compared with the other systems. Moreover, based on economic analysis via the net present value and life cycle cost analysis methods, the system reduced costs by 29.2 and 27.7%, respectively, compared with conventional fossil fuel boilers. Thus, hybrid system 1 was identified as the most economical system. |
| Databáze: | OpenAIRE |
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