Integration of Re-Functional Historical Inns with Technological Sustainability: The Case of Liman Han

This article explores the transformation of the rich cultural and commercial past of the Historical Peninsula of Istanbul and the role of historical buildings in this process. In particular, the concept of "re-functioning" of dysfunctional cultural heritage structures is emphasized not only as a means of physical preservation, but also with its critical importance in terms of maintaining urban memory and economic and environmental sustainability. The study considered Liman Han, which is a re-functional example in the Eminönü region, as a case study. In the article, the history of Liman Han, which was built by Architect Vedat Tek in 1915, its unique architectural features and the extensive restoration process are detailed. By comparing the old (business inn) and new (mixed-use with library, institute, café, restaurant) functions of the inn, the importance of its successful transformation in terms of urban context and functional harmony was revealed. The main focus of the article is to analyze the current state of thermal comfort, natural lighting and acoustic comfort, which are examined within the scope of design criteria for human health and comfort in Liman Han. Field measurements and evaluations have revealed the general status of these comfort parameters, while at the same time identifying potential areas for improvement. Various technological sustainability solutions have been proposed to address these problems, such as smart sensor-based automation systems (e.g., smart HVAC, daylight sensor lighting), electrochromic glasses, renewable energy integration (solar panels, geothermal pump) and acoustic insulation panels. It is argued that these technological integrations will significantly improve the user experience and indoor comfort, as well as reduce operating costs by increasing the energy efficiency of Liman Han. As a result, the article confirms that it is essential to consider the principles of sustainable architecture and modern technological approaches in a holistic way in preserving cultural heritage and transferring it to future generations. Suggestions for future studies, legal regulations and interdisciplinary cooperation were presented.