Editor’s Note: Hundreds of PKU Winter Olympics volunteers are currently enthusiastically on hand to assist various volunteering jobs. Though from different backgrounds, they are together using their professions making this annul gorgeous international event successful. Let’s check out their most beautiful smiling faces and volunteering stories.

Peking University, February 5, 2022: Amangeldiyev Sapargeldi, an international student from Turkmenistan, volunteered as a performer in the opening ceremony of the Winter Olympics. He is a second year PhD student supervised by Professor Zhang Xinrong of the Department of Energy & Resources Engineering, College of Engineering, Peking University.


Before enrolling at PKU, Sapargeldi was invited by his mentor to participate in ice-making research related to the Winter Olympics. Their breakthroughs in CO2 transcritical refrigeration system have applied to the National Speed Skating Oval, setting a eco-friendly model.


Sapargeldi introduced that transcritical carbon dioxide (T-CO2) boasts high quality, low energy consumption and green ice rinks. Besides, the heat generated from the ice-making process can be recycled, which increases the energy management efficiency with integrated cooling and heating. This technology also greatly contributes to China’s long-term target of peaking carbon emissions before 2030 and reaching carbon neutrality in 2060.

"Every time I enter the National Speed Skating Oval, I am very proud to be a student in Professor Zhang’s group," said Sapargeldi with a smile, "because my initial interest in the Winter Olympics budded from the ‘High-Tech Winter Olympics’, and when I was selected as a performer in the opening ceremony, I was very happy and felt really lucky! Representing both my homeland Turkmenistan and PKU youths, I will strive harder to participate in training and contribute to PKU, to China and to my homeland."


Written by: Vissly Chan Shun Ling
Edited by: Ye Yimeng
Source: PKU Youth League (Source)