Gasper Choonya is a researcher affiliated with the University of Gävle, Sweden, where he is involved in energy systems and sustainable building technologies. He holds a bachelor’s degree in mechanical engineering and obtained a Master's in Energy Systems from the University of Gävle in 2019. He is currently pursuing PhD studies within energy systems. His research primarily focuses on improving heating and energy efficiency in large spaces, such as greenhouses and industrial environments. A notable area of his work is developing and analyzing wall confluent jets (WCJs) as an innovative heating method, particularly for utilizing waste heat to enhance thermal comfort and energy performance. Mr. Choonya's research combines experimental studies with computational approaches, such as response surface methodology, computation fluid dynamics, and indoor Climate and Energy (IDA ICE) to optimize airflows and thermal performance in energy-intensive settings. His contributions aim to support the broader goals of sustainable urban development and energy-efficient building systems. His background includes mechanical engineering, heat transfer, fluid mechanics, thermodynamics, ventilation, building physics, and energy systems. He previously worked as a construction, commissioning, operations, and maintenance engineer at a coal-fired thermal power plant.