sinfonia:energy_efficiency_in_domestic_electrical_energy_use
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sinfonia:energy_efficiency_in_domestic_electrical_energy_use [2020/07/14 16:25] – [Results] gergina.radeva@passiv.de | sinfonia:energy_efficiency_in_domestic_electrical_energy_use [2021/03/02 05:33] (current) – naman.sukhija@passiv.de | ||
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=== Sample 01 === | === Sample 01 === | ||
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Data sample 01 was acquired in a three-person household within a multifamily building, domestic hot water was prepared with an electric resistance heater. Coincidentally, | Data sample 01 was acquired in a three-person household within a multifamily building, domestic hot water was prepared with an electric resistance heater. Coincidentally, | ||
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The total consumption in the time of the experiment amounted to a good 3000 kWh in sample 03, which extrapolates to around 10000 kWh per annum. This is a household with extremely high energy consumption, | The total consumption in the time of the experiment amounted to a good 3000 kWh in sample 03, which extrapolates to around 10000 kWh per annum. This is a household with extremely high energy consumption, | ||
- | It is obvious from the gradients given in table 4 that feeding back information on the energy consumption had a persistent reduction effect in the case of sample 03. It held into phase 3, however, a slight reduction in energy consumption might also be attributed to the advent of spring and changed habits due to the CoVID19-related lockdown. \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ | + | It is obvious from the gradients given in table 4 that feeding back information on the energy consumption had a persistent reduction effect in the case of sample 03. It held into phase 3, however, a slight reduction in energy consumption might also be attributed to the advent of spring and changed habits due to the CoVID19-related lockdown. |
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- | === Sample 04 === | ||
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+ | === Sample 04 === | ||
Data sample 04 was acquired in a two-person household within a multifamily building, domestic hot water preparation was electric but metered separately and is thus not part of the shown data. Data acquisition continued for about five weeks onto the period of the CoVID19-related lockdown. \\ | Data sample 04 was acquired in a two-person household within a multifamily building, domestic hot water preparation was electric but metered separately and is thus not part of the shown data. Data acquisition continued for about five weeks onto the period of the CoVID19-related lockdown. \\ | ||
The total consumption in the time of the experiment amounted to a good 1600 kWh in sample 04, which extrapolates to around 6500 kWh per annum. This is another household with extremely high energy consumption, | The total consumption in the time of the experiment amounted to a good 1600 kWh in sample 04, which extrapolates to around 6500 kWh per annum. This is another household with extremely high energy consumption, | ||
- | It is obvious from the gradients given in table 5 that feeding back information on the energy consumption had a slight reduction effect in the case of sample 04. It held into phase 3, however, a slight reduction in energy consumption might also be attributed to the advent of spring and changed habits due to the CoVID19-related lockdown. Since the latter covered a substantial part of the experiment’s time added uncertainty must be assumed as to the effect of changed habits. \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ | + | It is obvious from the gradients given in table 5 that feeding back information on the energy consumption had a slight reduction effect in the case of sample 04. It held into phase 3, however, a slight reduction in energy consumption might also be attributed to the advent of spring and changed habits due to the CoVID19-related lockdown. Since the latter covered a substantial part of the experiment’s time added uncertainty must be assumed as to the effect of changed habits. |
=== Daytime Energy Use Incentives Phase === | === Daytime Energy Use Incentives Phase === | ||
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The typical daily load curve for households is well known from various studies. The above figure illustrates this with a chart from [Zimmermann_2012]. During the small hours of the night the load is low, with a steep increase in the morning when people get up and start their daily routine. After this rush hour a slight decrease and a minor peak around lunch time can be observed. The main activities only begin after four in the afternoon when inhabitants return home, cook meals, and start electronic entertainment equipment. \\ | The typical daily load curve for households is well known from various studies. The above figure illustrates this with a chart from [Zimmermann_2012]. During the small hours of the night the load is low, with a steep increase in the morning when people get up and start their daily routine. After this rush hour a slight decrease and a minor peak around lunch time can be observed. The main activities only begin after four in the afternoon when inhabitants return home, cook meals, and start electronic entertainment equipment. \\ | ||
- | Five data logging systems were deployed in late 2019/early 2020 of which three provided data with sufficient quality for hourly evaluation. | + | Five data logging systems were deployed in late 2019/early 2020 of which three provided data with sufficient quality for hourly evaluation. |
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In sample 01 it seems that the variability of electricity use differed somewhat in the two consecutive experiment phases but the general pattern of the median hourly share in the daily total appears to exhibit no significant change. The median curve largely follows the characteristics determined by other studies, e.g. [Zimmermann_2012]. There is no indication that daytime energy use had been incentivised in a significant way by the daytime price. \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ | In sample 01 it seems that the variability of electricity use differed somewhat in the two consecutive experiment phases but the general pattern of the median hourly share in the daily total appears to exhibit no significant change. The median curve largely follows the characteristics determined by other studies, e.g. [Zimmermann_2012]. There is no indication that daytime energy use had been incentivised in a significant way by the daytime price. \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ | ||
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In sample 02 it seems that the variability of electricity use is pronounced in this household and differed less than in sample 01 in the two consecutive experiment phases. The general pattern of the median hourly share in the daily total, however, still follows the average profile rather well. One notable difference, for both phases of the experiment is, that in this household the morning hump is more pronounced than the evening hump. If a change in user behaviour can be observed it is a shift of the energy use towards the evening but there are no signs for increased daytime energy use. | In sample 02 it seems that the variability of electricity use is pronounced in this household and differed less than in sample 01 in the two consecutive experiment phases. The general pattern of the median hourly share in the daily total, however, still follows the average profile rather well. One notable difference, for both phases of the experiment is, that in this household the morning hump is more pronounced than the evening hump. If a change in user behaviour can be observed it is a shift of the energy use towards the evening but there are no signs for increased daytime energy use. | ||
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In sample 03 both the variability of electricity use and the hourly share during the daytime hours seem to have increased from one phase of the experiment to the next. One notable difference to the average profile, for both phases of the experiment is, that in this household the morning hump is more pronounced than the evening hump. In this sample significant signs for increased daytime energy use can be observed. \\ | In sample 03 both the variability of electricity use and the hourly share during the daytime hours seem to have increased from one phase of the experiment to the next. One notable difference to the average profile, for both phases of the experiment is, that in this household the morning hump is more pronounced than the evening hump. In this sample significant signs for increased daytime energy use can be observed. \\ | ||
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This project has received funding from the European Union’s Seventh Programme for research, technological development and demonstration under grant agreement No 609019.// | This project has received funding from the European Union’s Seventh Programme for research, technological development and demonstration under grant agreement No 609019.// | ||
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+ | //Energy labels mentioned in the article refer to the EU labels applicable before 01 March 2021.// | ||
sinfonia/energy_efficiency_in_domestic_electrical_energy_use.1594736747.txt.gz · Last modified: 2020/07/14 16:25 by gergina.radeva@passiv.de