Thermal performance and comfort potential estimation in low-rise high thermal mass naturally ventilated office buildings in India: An experimental study

Singh, Manoj Kumar; Mathur, Anuj; Mathur, Sanjay; Mathur, Jyotirmay

doi:10.1016/j.jobe.2018.09.003

Cited by 42 publications

(15 citation statements)

References 30 publications

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“…Thermal mass (TM) can be classified into two major groups: internal TM, such as furniture, and external TM, such as walls, roofs, and floors [32]. The use of TM can be effective in reducing the total amount of energy and maintaining the thermal comfort levels for the users [23,26,[30][31][32]. TM is the most functional in hot weather when outdoor temperatures soar sharply [31] or in hot summer in cooler regions [25,26,28,[33][34][35].…”

Section: Significance Of Thermal Mass In Buildingsmentioning

confidence: 99%

“…Thermal mass is strongly connected to thermal comfort. According to Kumar [30], 40% to 98% of thermal discomfort can be avoided when using thermal mass in buildings. In fact, some of the published work argues that the use of TM will not aid in reducing the energy demand but will help to improve the thermal comfort level for users [29].…”

Section: Significance Of Thermal Mass In Buildingsmentioning

confidence: 99%

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User Thermal Comfort in Historic Buildings: Evaluation of the Potential of Thermal Mass, Orientation, Evaporative Cooling and Ventilation

et al. 2020

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The study investigated the level of thermal comfort in historical buildings located at a relatively high altitude in the Arabian Desert of Saudi Arabia. The study focused on the impact of the use of thermal mass and orientation on the level of thermal performance at Shubra and Boqri Palaces. Qualitative and quantitative analyses were used in this study, including a questionnaire interview with architecture experts living at the relatively high altitude of Taif city, to obtain data and information from local experts. The computer software TAS EDSL was used along with on-site equipment, such as thermal imaging cameras and data loggers, to observe the physical conditions of the building in terms of its thermal performance. The study revealed that the experts’ age and years of experience were important aspects while collecting data from them during the survey. The use of thermal mass had a slight impact on the indoor air temperature as well as the energy consumption, but it helped in providing thermal comfort. Use of ventilation can improve thermal comfort level. Evaporative cooling technique has a considerable impact on reducing indoor air temperature with 4 °C drop, improving the thermal comfort sensation level. The novelty of this work is that, it links the outcomes of qualitative results of experts with field monitoring as well as computer modelling. This can contribute as method to accurately collect data in similar case studies.

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Section: Significance Of Thermal Mass In Buildingsmentioning

confidence: 99%

Section: Significance Of Thermal Mass In Buildingsmentioning

confidence: 99%

User Thermal Comfort in Historic Buildings: Evaluation of the Potential of Thermal Mass, Orientation, Evaporative Cooling and Ventilation

et al. 2020

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“…Use of scaled building models in the thermal environment analysis were in practice for several decades as reported by Yoon et al [19,20]. On the other hand, there are numerous literary proofs of the analysis on (a) wind effects [21], (b) solar power utilization [22] and (c) thermal performance in comfort potential of low-rise or shallow buildings [23]. Similarly, Nahar et.…”

Section: Details Of Experimental Set Upmentioning

confidence: 99%

Heat Transfer Characterization of Test Rooms with Six Different Roofs

Joshi¹

2020

IJHT

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Six test rooms each with different roof type (RCC roof; galvanized iron sheet roof; lawn over RCC roof; wet-sand bed over RCC roof; clay tile roof and thatched roof) under summer weather conditions are studied to analyze and quantify the role of roof element in reducing solar gain. The study also addresses the effects of roofing element on the test room temperatures. Results have shown that, lawn over the RCC roof could be the best choice among the considered. On the other hand, clay tile roof and thatched roof are found to be better than RCC roof as far as heat gain is considered. It is also observed that, clay tile roof providing better breathing effects as compared to thatched roof.

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“…TM is ultimately connected to thermal comfort. Based on the work conducted by Kumar [52], between 40% and 98% of thermal discomfort perception can be avoided with the utilisation of TM in buildings. However, some of the published research is against this.…”

Section: Thermal Mass and Its Influence On Underground Constructionsmentioning

confidence: 99%

Use of Underground Constructions Enhanced with Evaporative Cooling to Improve Indoor Built Environment in Hot Climate

Alwetaishi

2021

Buildings

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Underground constructions (UGCs) have been used globally to accommodate a wide range of building usage, such as offices and shopping malls. Most of these constructions suffer from a lack of natural ventilation as well as daylight, as they are completely built under the surface of the earth. This has caused many issues related to discomfort, impacting the activity and the productivity of users. This study aimed to analyse the effect of the use of UGCs in hot regions, enhanced by partly elevated external walls which reach aboveground to ensure natural ventilation and daylight, with relatively small amounts of glazing to minimise the influence of solar heat gain. The study used a real built underground room with field measurements for indoor temperature and relative humidity. Moreover, the study used the computer tool EDSL TAS to simulate the performance of the model throughout the year after a field validation. It was concluded that the use of UGCs in hot climates should be encouraged as natural ventilation and daylight can decrease temperatures by 3 °C in summer, and the utilisation of evaporative cooling can cool the indoor environment by nearly 12 °C. Furthermore, heat transfer was highly affected by the external environment. It was found that the amount of heat transfer doubled in comparison between under and aboveground constructions. The use of small windows for ventilation caused high humidity, even in hot regions, during summer.

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Thermal performance and comfort potential estimation in low-rise high thermal mass naturally ventilated office buildings in India: An experimental study

Cited by 42 publications

References 30 publications

User Thermal Comfort in Historic Buildings: Evaluation of the Potential of Thermal Mass, Orientation, Evaporative Cooling and Ventilation

User Thermal Comfort in Historic Buildings: Evaluation of the Potential of Thermal Mass, Orientation, Evaporative Cooling and Ventilation

Heat Transfer Characterization of Test Rooms with Six Different Roofs

Use of Underground Constructions Enhanced with Evaporative Cooling to Improve Indoor Built Environment in Hot Climate

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