Surakarta/Solo is located in the inland of Central Java. It has a tropical rainforest climate, with consistently high temperatures and humidity throughout the year, and a humid and oppressive environment during the rainy season. Its core industries include textiles, handicrafts, traditional culture tourism, education, and light industry. The buildings in this area generally rely on closed air conditioning systems, resulting in indoor air being stuffy, mold growth, and high energy consumption. The ERV (Energy Recovery Ventilation) full heat exchange ventilation system can efficiently ventilate while recovering cold energy, filtering pollutants, stabilizing temperature and humidity, and is particularly suitable for the following places. Residential building

Thoreau's residence covers old city row houses, low-density villas in the suburbs, student apartments and staff dormitories around universities. All of these are suitable for installing ERV. The traditional houses in the old city are mostly made of brick and wood, with limited ventilation and lighting. During the rainy season, the walls tend to get damp and moldy, and furniture gets damp. To prevent mosquitoes and high temperatures, doors and windows are often tightly closed, resulting in excessive carbon dioxide levels and lingering odors indoors. The villas and high-rise apartments in the suburbs have spacious spaces but rely on air conditioners for cooling and dehumidification, resulting in high energy consumption and poor air circulation. The student or staff dormitories are densely populated, and the enclosed environment is prone to breeding bacteria and spreading odors. ERV can continuously introduce filtered fresh air without opening windows, remove stale moisture and odors, recover the cold energy in the exhaust air to reduce air conditioning load, stabilize indoor humidity, and is particularly suitable for families with elderly, children, and people with respiratory sensitivities, as well as long-term enclosed collective dormitories.

Textile and handicraft workshop/factory

Thoreau is a famous center for textile and batik (Batik) industries in Indonesia, with numerous small and medium-sized textile workshops, batik workshops, garment processing factories and fabric storage facilities. It is the core application scenario for ERV. Textile workshops produce a large amount of fiber dust, dye volatiles and water vapor. Poor ventilation not only harms the respiratory health of workers but also causes fabrics to get damp and moldy, and uneven dyeing. Batik workshops have pungent dye and additive odors, and the high-humidity environment affects the solidification of wax and the accuracy of patterns. Fabric warehouses have strict requirements for temperature and humidity, and high humidity can cause fabric mold, insect damage, and quality decline. ERV can efficiently filter dust and harmful gases, precisely control indoor temperature and humidity, recover energy to reduce air conditioning energy consumption for production and storage, ensure product quality and worker safety, and reduce the spread of workshop odors.

Educational institutions

Thoreau has many universities, primary and secondary schools, and private kindergartens. With a dense population and high requirements for air quality, it is suitable for ERV systems. Classrooms, libraries, laboratories, dormitories and other spaces are long-term enclosed, and students have weak immunity, which is prone to respiratory diseases caused by polluted air and cross-infection of bacteria. Laboratories (especially chemical and biological laboratories) produce a small amount of harmful gases and odors that need continuous ventilation for replacement. University libraries, study rooms, etc. have a large flow of people, and the carbon dioxide concentration is prone to exceed the standard, affecting learning efficiency. ERV can intercept dust, mold and bacteria through multiple levels of filtration, continuously supply clean fresh air, remove stale air and harmful gases, and at the same time recover energy to maintain stable indoor temperature and humidity, reduce the risk of cross-infection, and create a healthy and comfortable learning environment for teachers and students.