Demand-Side Management through thermal efficiency in South African houses

Lombard, Carl; Mathews, E.H.; Kleingeld, M.

doi:10.1016/s0378-7788(98)00064-4

Cited by 26 publications

(9 citation statements)

References 14 publications

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“…This has led Eskom to work in partnership with the City of Cape Town to develop a response strategy, which includes a broad-scale media and communication and demand-side management (DSM) campaign (Eskom, 2006b). The residential sector in South Africa contributes more than 20% of the national peak electricity demand; thus many of the DSM measures are aimed at residential consumers (Lombard et al, 1999). The DSM campaign in partnership with Cape Town seeks to reduce peak demand by 400 MW and has resulted in a number of energy-saving measures, including (Eskom, 2006b):…”

Section: Role Of the Electricity Supply Commission (Eskom)mentioning

confidence: 99%

Factors and Actors in Climate Change Mitigation: A Tale of Two South African Cities

Holgate

2007

Local Environment

153

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South Africa, being a developing nation, is faced with many challenges, including poverty and one of the world's highest HIV/AIDS infection rates. It is within this context that this paper presents an overview of the role played by major stakeholders in climate change mitigation policies, with the focus on two South African cities, namely Cape Town and Johannesburg. This paper aims to identify the internal and external factors that act as barriers to, or promote, climate change mitigation policy development and implementation in South African cities. These may take the form of the city's internal structures, political interventions and support, and external factors including partnerships with outside organizations, including all tiers of government, non-governmental organizations and academic institutions. The media and an energy crisis in the Cape prove to play an unexpected role in assisting Cape Town to implement climate change mitigation measures.

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Section: Role Of the Electricity Supply Commission (Eskom)mentioning

confidence: 99%

Factors and Actors in Climate Change Mitigation: A Tale of Two South African Cities

Holgate

2007

Local Environment

153

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“…A area through which the heat is exchanged (m 2 ) A C total area of the ceiling (m 2 ) A W total area of the house exterior walls (m 2 ) C annual cost for the consumed natural gas for house heating, based on natural gas bills (D/a) C BH annual cost for the consumed natural gas for heating of the basic house (D/a) C D annual fee at the delivery point (D/a) H price of a natural gas cubic meter (D/m 3 ) IR investment return (a) k temperature correction coefficient P MCL price of the material for ceiling lowering (D/m 2 ) P MWI price of the material for the wall insulation (D/m 2 ) P P price of the polystyrene (D/m 2 ) PS annual savings due to improvement of the thermal characteristics of the house (%) PW investment in refurbishment (D) PW IW investment in refurbishment by thermal insulation of the external walls (D) PW IC investment in refurbishment by the ceiling insulation (D) PW LC the investment in refurbishment by the ceiling lowering (D) PW ILC investment in refurbishment by the ceiling insulation and the ceiling lowering (D) PW ILCW investment in refurbishment by the wall insulation, the ceiling insulation and the ceiling lowering (D) Q ng energy consumed by the natural gas boiler during heating period (J/a) Q r,ng heat flux exchanged between the water in the radiators and the ambient air (W) S annual savings due to improvement of the thermal characteristics of the house (J/a) T SVO average water temperature (K) T SVA air temperature (K) V volume of natural gas consumed in the heating season (m 3 /a) U heat transfer coefficient (W/(K m 2 )) energy policy, a program [12] is proposed for the thermal efficiency refurbishment of housing in South Africa (by better insulation of the building envelope, and improved insulation of hot water networks). Galvin in his paper [13], deals with the thermal renovation of existing homes in Germany, with emphasis on German building regulations.…”

Section: Nomenclaturementioning

confidence: 99%

Decreasing energy consumption in thermally non-insulated old house via refurbishment

Bojić

Djordjević

Stefanović

et al. 2012

Energy and Buildings

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“…The system voltage, current and real power have been measured to indicate the power consumption of a T5 fluorescent luminaire and the performance of the lighting control unit. The average illuminance on the workplane has also been measured; this value is needed for a lighting control unit to set the light output according to standards [4]. The result from the experimental setup will be useful for designing and installing a daylighting system in a building to fully harvest natural light and increase the energy efficiency in a lighting system.…”

Section: Introductionmentioning

confidence: 99%

Feasibility Study and Impact of Daylight on Illumination Control for Energy-Saving Lighting Systems

Bunjongjit

Ngaopitakkul

2018

Sustainability

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The main goal of energy conservation should be reducing the consumption of energy resources. Due to energy and environmental concerns in recent years, to reduce energy consumption in a lighting system, which has been one of the prime targets of energy saving, daylighting has been investigated and has become one of the energy-efficiency techniques widely applied in buildings. This paper presents an analysis of T5 fluorescent luminaire lighting control using daylight in a building. The study is conducted in two parts; simulation of a lecture room using the daylighting function of the DIALux program is performed to estimate the effect of daylighting on a task area (workplane). Another part is an experimental setup to evaluate the performance of a lighting control unit that is installed for a T5 fluorescent luminaire with a dimmable electronic ballast. The efficiency of the lighting control in term of illumination on the task area and energy consumption are also evaluated and compared with the standard case. The simulation results show that daylighting increases illuminance on a task area, especially on the window side, so the lighting system can significantly reduce its power consumption compared with a standard case (without lighting control). The experimental result shows that upon installing the lighting control with daylighting, both the average illuminance and the energy consumption in each time period are decreased compared with in the standard case. Lighting control with daylighting tries to set the average illuminance on a task area to less than 500 lux, corresponding to the amount of daylight passing through window shutters. The obtained results are useful for the design of a T5 fluorescent luminaire with lighting control using daylighting in a building lighting system for energy efficiency and reducing energy consumption, including the average illuminance on the task area, according to a relevant standard.

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Demand-Side Management through thermal efficiency in South African houses

Cited by 26 publications

References 14 publications

Factors and Actors in Climate Change Mitigation: A Tale of Two South African Cities

Factors and Actors in Climate Change Mitigation: A Tale of Two South African Cities

Decreasing energy consumption in thermally non-insulated old house via refurbishment

Feasibility Study and Impact of Daylight on Illumination Control for Energy-Saving Lighting Systems

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