Advanced Control of a District Heating System with High Residential Domestic Hot Water Demand
| Autor: | Timur Junussov, Stanislav Chicherin, Lyazzat Junussova |
|---|---|
| Přispěvatelé: | Thermodynamics and Fluid Mechanics Group, Engineering Technology, Electromobility research centre |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:GE1-350
060102 archaeology Primary energy Flow (psychology) 0211 other engineering and technologies Earth and Planetary Sciences(all) 06 humanities and the arts 02 engineering and technology Thermal energy storage Sizing Automotive engineering law.invention Hot water extraction Heating system Energy(all) Environmental Science(all) law Control theory Environmental science 0601 history and archaeology 021108 energy lcsh:Environmental sciences Heat pump |
| Zdroj: | E3S Web of Conferences, Vol 160, p 01004 (2020) |
| ISSN: | 2267-1242 |
| DOI: | 10.1051/e3sconf/202016001004 |
| Popis: | Proper adjustment of domestic hot water (DHW) load structure can balance energy demand with the supply. Inefficiency in primary energy use prompted Omsk DH company to be a strong proponent of a flow controller at each substation. Here the return temperature is fixed to the lowest possible value and the supply temperature is solved. Thirty-five design scenarios are defined for each load deviation index with equally distributed outdoor temperature ranging from +8 for the start of a heating season towards extreme load at temperature of -26°C. All the calculation results are listed. If a flow controller is installed, the customers might find it suitable to switch to this type of DHW supply. Considering an option with direct hot water extraction as usual and a flow controller installed, the result indicates that the annual heat consumption will be lower once network temperatures during the fall or spring months are higher. The heat load profiles obtained here may be used as input for a simulation of a DH substation, including a heat pump and a tank for thermal energy storage. This design approach offers a quantitative way of sizing temperature levels in each DH system according to the listed methodology and the designer's preference. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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