Papers by Uelun-Ujin Purev
Aij Journal of Technology and Design, Oct 20, 2022
This paper presents an insulation retrofitting method developed for nomadic mobile housing called... more This paper presents an insulation retrofitting method developed for nomadic mobile housing called ger , which is used by urban residents in Ulaanbaatar, Mongolia, to promote the shift from coal stoves to electric heating devices to reduce air pollution. Field surveys of current gers were conducted to ensure that the design and materials chosen were affordable with high market availability. The developed system was installed in a typical urban ger in winter to obtain feedback from residents and local stakeholders. The results of field measurements of indoor thermal conditions of a ger with and without retrofitting are reported.
Proceedings of International Exchange and Innovation Conference on Engineering & Sciences (IEICES), 2021
In this study, the walls and roofs of five-walled gers were insulated with high-performance build... more In this study, the walls and roofs of five-walled gers were insulated with high-performance building insulation materials while maintaining the original purpose of portable design of the ger. The ger is a traditional nomadic housing made of wooden structures and covered with few layers of felt sheets. In Ulaanbaatar, 30.4% of the total households live in gers. The indoor air temperature, surface temperature, outdoor air temperature, and solar radiation were measured to validate the performance of roof and wall retrofitting. Measurements were performed in two phases: before and after renovation. After renovation, the wall surface temperature increased and became similar to the roof surface temperature. The floor surface temperature remained low, from 0 °C to 15 °C, indicating that floor insulation was needed. The operative temperature was up to 5 °C higher than the indoor air temperature before renovation, and after renovation, the operative temperature become 1.5 °C higher than the indoor air temperature owing to the use of an electric heating device.
Journal of Building Engineering
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Papers by Uelun-Ujin Purev