Journal of the Association of Engineers, India

Anubrata Mondal ¹, Kamalika Ghosh ², Suchandra Bardhan ³

Affiliations
1 Illumination Technology and Design, School of Illumination Science, Engineering and Design, Jadavpur University, Kolkata- 700 032, IN
2 School of Illumination Science, Engineering and Design, Jadavpur University, Kolkata- 700 032, IN
3 Department of Architecture, Jadavpur University, Kolkata- 700 032, IN

Abstract

Heritage Buildings are essential assets of a city because these comprise of various archival and rare collections of paintings, sculptures, photographs, periodicals, costumes, curio pieces etc. So maintaining the internal and external architectural lighting characters is important for preventive preservation. Therefore Interior lighting designing approach is one of the significant for achieving this goal. This approach follows specific guidelines but it can be varied depending upon the designer's choice. Jorasanko Thakurbari in Kolkata is a Heritage building with over 200 years of socio cultural history that has interested many historic events as the family abode of the erstwhile Tagores. This paper attempts to give a brief idea about the interior Lighting design approach followed for some typical galleries of Thakurbari with the help of modern and energy efficient lamp using DIALux-Lighting Software.

Keywords

Heritage, Antique, Illuminance, Lighting Software.

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Kamalika Ghosh , Saswati Mazumder ¹

Affiliations
1 Department of Electrical Engineering, Jadavpur University, IN

Abstract

Life has evolved under the influence of radiation from Sun. As a result Human race, Animals, Plants have developed a variety of complex physiological responses to Solar Radiations. Environment consists of four segments - Atmosphere, Hydrosphere, Lithosphere and Biosphere. Photosynthesis caused by light has a great contribution to Ecological balance specially in atmosphere by exchange of CO₂ and O₂. UV radiation has germicidal effect. However Light Pollution caused by crude lighting design causes obstruction to Astronomers, glare to Driver. Various Spectrometers, e.g., Opacity meter are used in environmental control. Two third portion of earth is filled in water containing Plants, living organism, such as Fish, Coral etc. Through process of photosynthesis, under water plants absorb dissolved CO₂ and supply oxygen preventing the build up of carbonic acid which can be harmful to fish etc. Light pollution around lakes prevents fish from eating surface algae, which may affect ecosystems. Lighting industries have byproduct of Mercury, Lead, Chromium, PCB, inorganic packing materials etc. causing health hazard. Light contributes power to Vision, synthesis of various hormones for living organisms. Too much exposure to Sunlight also leads to various Skin/Eye diseases. With the advancement of civilization people are stretching towards more working hours as well as artificial environment supplemented through artificial light. Prolong use of light likely to causes Endocrine disorder leading to various diseases and making liability to society. Scientific development can not be rolled back to primitive age. However complete balance between the Science (Light - in - this case ) and Ecology is needed for survival.

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Kamalika Ghosh ¹, Aryama Roy ¹

Affiliations
1 School of Illumination Science, Engineering and Design, Jadavpur University, IN

Abstract

Lighting requirement is different during day and night inside a tunnel. During nighttime, the tunnel has to be lit with same lighting level of the approach and exit road from the tunnel. During daytime, as a driver enters the relatively dark tunnel from a bright sunlit outside he is supposed to face adaptation problem as adaptation from high to low level of luminance doesn't take place instantaneously. To overcome this problem, the tunnel entrance has to be lit heavily compared to the part that is remotely inside the tunnel. The goal is to do a tunnel lighting design, for Sikanderpur Underpass which is 560 m long, which can facilitate proper adaptation and visually safe driving condition for a driver.

Keywords

Adaptation, Interior-Zone, Exit Zone, Threshold Zone, Transition Zone.

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Kamalika Ghosh ¹, Snehargha Roy ¹

Affiliations
1 School of Illumination Science, Engineering and Design, Jadavpur University, Kolkata-700032, IN

Abstract

Lighting in hospital facilities should support the visual performance of hospital workers such as doctors and nurses who need to examine and observe patients, dispense medication, perform as per clinical procedures, and view displays and papers clearly. Proper Light effect and colour should also provide comfortable, pleasant and natural visual environment for patients in healthcare facilities and their families, and support natural rhythms of sleeping and wakefulness. All the while the maintenance costs and energy use of hospital lighting should be minimized. For that, use of LED based lighting system using smart lighting technology is more valuable to provide desired illuminance value and uniformity as per the standards depending on the situation throughout the day. The objective of the journal paper is to study and design implementation of modern energy efficient lighting technology in hospital using smart lighting system depending on the situation throughout the day. Also, aim is to provide desired illuminance value and uniformity as per the standards. The new intelligent lighting control system should be designed to maximize the utilization of daylight with energy efficient light source.

Keywords

Lighting, Illumination, Hospital, Energy Efficient, Hospital Lighting.

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Kamalika Ghosh ¹, Suindra Moitra ²

Affiliations
1 Former Director & Associate Professor, School of Illumination Science, Engineering and Design, Jadavpur University, Kolkata, IN
2 Assistant Professor, Calcutta Institute of Engineering and Management, IN

Abstract

In present days of energy crisis, the primary aim of an electrical engineer is to design an energy-efficient illumination system favouring the proper illumination level and visual comfort of the occupants of those spaces in compliance with relevant codes and guidelines. As of September 2022, India’s total installed power capacity is 407.796 GW. Of the total electricity consumption in India the building sector contributes 33%, further among the commercial building contributes for 9% of total electricity consumption in India. HVAC and Illumination are the leading consumers of energy in commercial buildings. Approximately illumination load constitutes 59% of total power consumption in commercial buildings and 19% of total power generation in India. Since healthcare sectors have an immense contribution in our society and it operates all round the clock, artificial light sources generate enormous energy demand of lighting load to the total power consumption. This article focuses on an in-depth study of energy-efficient and sustainable illumination solution for the healthcare sectors classified under Hospital-General Treatment and Specialized Treatment, Medical College and Pharmaceutical manufacturing facility.

Keywords

ipRGC, Circadian Rhythm, CRI, Energy-Efficient Illumination Design.

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