A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Residential building energy demand and thermal comfort: Thermal dynamics of electrical appliances and their impact
Highlights Generic electrical thermal model is established and incorporated in buildings. Electrical appliances heat gains coupled to the buildings thermal behavior. The partial energy demand substitution was expressed and demonstrated. The recovered electrical appliances power threshold depending on the well insulated and normal building.
Abstract Within a thermally well-insulated building, internal heat gains are getting more important on the point of the building thermal condition and its energy management [1–3]. In this study, we are focusing on thermal impact of heat dissipation of electrical appliances on buildings by applying a dynamic thermal model of electrical appliances. While a static model considers only power profile or power density of electrical appliances, the used dynamic model in this paper contains not only power profile but also thermal characteristics of electrical appliances. The thermal characteristics have been determined in previous study [4]. We shortly explain the methodology. The simulations are conducted with different values of thermal characteristics (power and RxC) representative of standard household appliances. The appliance thermal impact on the buildings in terms of heating energy demand and thermal comfort of occupants during a winter are investigated. This study is conducted within both a conventional residential building model and a thermally well-insulated residential building model. Two behaviors were identified: (i) below critical appliance power (600W, 200W for the B1 and B2, respectively), we observe fully power substitution of the heating energy demand. (ii) Above this critical power there is no fully substitution. Due to important temperature inhomogeneity within the different zones and the air renew flow structures coupled to the shift of appliance power consumption toward the unoccupied periods, the underlined lack of substitution is explained. It shows the necessity of dynamic thermal modeling of electrical appliances for more accurate and efficient building energy simulation and energy management especially for low energy buildings.
Residential building energy demand and thermal comfort: Thermal dynamics of electrical appliances and their impact
Highlights Generic electrical thermal model is established and incorporated in buildings. Electrical appliances heat gains coupled to the buildings thermal behavior. The partial energy demand substitution was expressed and demonstrated. The recovered electrical appliances power threshold depending on the well insulated and normal building.
Abstract Within a thermally well-insulated building, internal heat gains are getting more important on the point of the building thermal condition and its energy management [1–3]. In this study, we are focusing on thermal impact of heat dissipation of electrical appliances on buildings by applying a dynamic thermal model of electrical appliances. While a static model considers only power profile or power density of electrical appliances, the used dynamic model in this paper contains not only power profile but also thermal characteristics of electrical appliances. The thermal characteristics have been determined in previous study [4]. We shortly explain the methodology. The simulations are conducted with different values of thermal characteristics (power and RxC) representative of standard household appliances. The appliance thermal impact on the buildings in terms of heating energy demand and thermal comfort of occupants during a winter are investigated. This study is conducted within both a conventional residential building model and a thermally well-insulated residential building model. Two behaviors were identified: (i) below critical appliance power (600W, 200W for the B1 and B2, respectively), we observe fully power substitution of the heating energy demand. (ii) Above this critical power there is no fully substitution. Due to important temperature inhomogeneity within the different zones and the air renew flow structures coupled to the shift of appliance power consumption toward the unoccupied periods, the underlined lack of substitution is explained. It shows the necessity of dynamic thermal modeling of electrical appliances for more accurate and efficient building energy simulation and energy management especially for low energy buildings.
Residential building energy demand and thermal comfort: Thermal dynamics of electrical appliances and their impact
Ruellan, Marie (author) / Park, Herie (author) / Bennacer, Rachid (author)
Energy and Buildings ; 130 ; 46-54
2016-07-12
9 pages
Article (Journal)
Electronic Resource
English
Thermal comfort in residential buildings: Comfort values and scales for building energy simulation
| BASE | 2009
Impact of Demand-Side Management on Thermal Comfort and Energy Costs in a Residential nZEB
| DOAJ | 2017