Hourly consumption profiles of domestic hot water for different occupant groups in dwellings

Ahmed, Kaiser; Pylsy, Petri; Kurnitski, Jarek

doi:10.1016/j.solener.2016.08.033

Cited by 91 publications

(53 citation statements)

References 36 publications

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“…Also, energy need for DHW is equally important in residential and commercial buildings. Ahmed et al [15] provided the hourly DHW profiles for different occupant groups in Finnish residential buildings. The variations of hourly DHW consumption were observed during weekdays, weekends [15] as well as different months of a year [16], which ensured different occupancy presence patterns in residential buildings.…”

Section: Introductionmentioning

confidence: 99%

“…Ahmed et al [15] provided the hourly DHW profiles for different occupant groups in Finnish residential buildings. The variations of hourly DHW consumption were observed during weekdays, weekends [15] as well as different months of a year [16], which ensured different occupancy presence patterns in residential buildings. Moreover, actual occupancy profiles in different building categories are equally important for the development of energy management systems (EMS).…”

Section: Introductionmentioning

confidence: 99%

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Occupancy schedules for energy simulation in new prEN16798-1 and ISO/FDIS 17772-1 standards

Ahmed

Akhondzada

Kurnitski

et al. 2017

Sustainable Cities and Society

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Occupancy schedules for energy simulation in new prEN16798-1 and ISO/FDIS 17772-1 standards

Ahmed

Akhondzada

Kurnitski

et al. 2017

Sustainable Cities and Society

Self Cite

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“…• C and the drawing per person is 43 L/d [93]. Moreover, domestic hot water profiles exhibit significant peaks in the morning and in the evening due to occupant behavior [94].…”

Section: Demandmentioning

confidence: 99%

Sustainable Residential Energy Supply: A Literature Review-Based Morphological Analysis

Arens¹,

Schlüters²,

Hanke³

et al. 2020

Energies

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The decarbonization of the energy system will bring substantial changes, from supranational regions to residential sites. This review investigates sustainable energy supply, applying a multi-sectoral approach from a residential site perspective, especially with focus on identifying crucial, plausible factors and their influence on the operation of the system. The traditionally separated mobility, heat, and electricity sectors are examined in more detail with regard to their decarbonization approaches. For every sector, available technologies, demand, and future perspectives are described. Furthermore, the benefits of cross-sectoral integration and technology coupling are examined, besides challenges to the electricity grid due to upcoming technologies, such as electric vehicles and heat pumps. Measures such as transport mode shift and improving building insulation can reduce the demand in their respective sector, although their impact remains uncertain. Moreover, flexibility measures such as Power to X or vehicle to grid couple the electricity sector to other sectors such as the mobility and heat sectors. Based on these findings, a morphological analysis is conducted. A morphological box is presented to summarize the major characteristics of the future residential energy system and investigate mutually incompatible pairs of factors. Lastly, the scenario space is further analyzed in terms of annual energy demand for a district.

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“…Note that the measured heat demand for DHW was atypically low. Detailed hourly and monthly DHW demand profiles for households in Finland are presented by Ahmed, Pylsy, and Kurnitski (2016); nevertheless, part of the aim of this study is to mimic Villa ISOVER's energy demands in 2014, so measured data are given priority over derived or tabulated profiles. Thus, the measured hot water consumption in litres was used instead in the simulation model, which yielded a heat demand closer to that given in the NBCF.…”

Section: Base Model and Calibrationmentioning

confidence: 99%

Energy and exergy analysis of prosumers in hybrid energy grids

Delgado

Cao

Hasan

et al. 2017

Building Research & Information

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Surplus energy can be a recurrent phenomenon in zero-energy buildings (ZEBs) with onsite generation systems, usually resulting in the export of excess electricity. Yet, converting electricity into heat and exporting it could improve the overall energy balance. This study analyses the energy and exergy performance of a Finnish nearly zero-energy building (nZEB) as a heat and electricity prosumer, and proposes alternative energy topologies to improve energy and exergy levels, primary energy demand and CO 2 emissions. The results show that increasing the installed capacity of the photovoltaic systems would lead to zero energy, exergy, emissions and a balance of primary energy. However, by instead using the surplus electricity to drive a heat pump and export heat, the currently installed capacity would lead to a net energy export of over 4000 kWh/a. Thus, energy conversion could significantly enhance the contribution from heat and electricity prosumers to smart energy grids, though not without affecting other criteria. Two management strategies arise: favouring heat export improves the net energy and CO 2 emissions reduction but lessens the net exergy, while favouring electricity export improves the net exergy and primary energy reduction. The findings highlight that energy conversion can enhance nZEB performance and its exchange with hybrid grids.

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Hourly consumption profiles of domestic hot water for different occupant groups in dwellings

Cited by 91 publications

References 36 publications

Occupancy schedules for energy simulation in new prEN16798-1 and ISO/FDIS 17772-1 standards

Occupancy schedules for energy simulation in new prEN16798-1 and ISO/FDIS 17772-1 standards

Sustainable Residential Energy Supply: A Literature Review-Based Morphological Analysis

Energy and exergy analysis of prosumers in hybrid energy grids

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