Representative hot water draw profiles at high temporal resolution for simulating the performance of solar thermal systems

Edwards, Skai; Beausoleil-Morrison, Ian; Laperrière, A.

doi:10.1016/j.solener.2014.10.026

Cited by 77 publications

(57 citation statements)

References 11 publications

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“…The DHW profiles that were used in simulations were obtained from Edwards et al (2015). These profiles are at a 5-minute timescale resolution and a 1 L DHW draw resolution.…”

Section: Methodsmentioning

confidence: 99%

“…Note that the house identifiers (H5, H11, H14 etc.) shown in Table 14 are not sequential but do correspond to the naming convention of the 12 profiles Edwards et al (2015) made available. To convert the profiles from a volumetric to an energy basis a constant outlet temperature of 55 o C was assumed along with an assumed monthly mains temperature profile shown at the bottom of Table 14.…”

Section: Methodsmentioning

confidence: 99%

“…To convert the profiles from a volumetric to an energy basis a constant outlet temperature of 55 o C was assumed along with an assumed monthly mains temperature profile shown at the bottom of Table 14. Note that the profiles provided by Edwards et al (2015) were gathered from storage tank water heaters and not TWHs, therefore, a constant outlet temperature assumption is reasonable for these conversions. Edwards et al (2015) described these draw profiles in great detail and interested readers are referred to this work for more information.…”

Section: Methodsmentioning

confidence: 99%

“…Note that the profiles provided by Edwards et al (2015) were gathered from storage tank water heaters and not TWHs, therefore, a constant outlet temperature assumption is reasonable for these conversions. Edwards et al (2015) described these draw profiles in great detail and interested readers are referred to this work for more information. All simulations were conducted for the entire year.…”

Section: Methodsmentioning

confidence: 99%

“…Also, the TWH modelled in Chapter 4 predicted E in−twh based on DHW draw data gathered at a 1-second timescale resolution that were obtained from Bohac et al (2010). This is in contrast to the profiles provided by Edwards et al (2015) that were based on DHW draw data gathered at a 5-minute timescale resolution and were used in the simulations described in this chapter. The coarser timescale resolution data provided by Edwards et al (2015) has the effect of artificially aggregating many separate smaller individual DHW draws into larger draws.…”

Section: Tankless Water Heater Modelmentioning

confidence: 99%

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Developing a Methodology for Assessing the Energy Potential of Residential Micro-Cogeneration Systems

Johnson¹

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Currently, there is no generally-accepted defensible methodology that can be used to compare the energy performance of micro-cogeneration systems against reference conventional methods for providing residential thermal and electrical demands. In particular, the mathematical models of micro-cogeneration systems being used in this field have uncertainties associated with their predictions. However, these uncertainties have yet to be given serious attention by researchers in this field. This research makes a contribution by developing a more defensible methodology where these model uncertainties are considered.This methodology is demonstrated with a case study where the energy performance of a fuel-cell based micro-cogeneration system serving only domestic hot water demands is compared to the energy performance of reference conventional methods.A condensing tankless water heater and a central gas-fired combined-cycle plant are considered as these reference conventional methods for providing domestic hot water demands and electrical demands respectively. The simulation results demonstrated that if model uncertainties were ignored, it would have been possible to demonstrate that the considered micro-cogeneration system was more efficient than the reference conventional methods by serving only average consumption levels of domestic hot water. However, if model uncertainties were considered, the micro-cogeneration system could not reliably be shown to be more efficient than the reference conventional methods by serving the domestic hot water needs of a single house.ii

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“…The DHW profiles that were used in simulations were obtained from Edwards et al (2015). These profiles are at a 5-minute timescale resolution and a 1 L DHW draw resolution.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%