Student Feature Friday with Mohsin Tanveer
Meet Mohsin Tanveer. Mohsin is a 4th year PhD student with CIBS and set to graduate in the Fall of 2023. When he is not working, he enjoys cooking, playing cards, and traveling. Recently he’s been taking trips to his home country in Pakistan, and he has enjoyed visits to several states here in the US.
Before joining CIBS, what appealed to Mohsin most was the energy sector. He realized that, whether you look at industrial or residential use, HVAC companies use a lot of energy. Mohsin recognized an opportunity with great potential to improve energy performance. Rather than working in the broad area of renewable energy, he saw an opportunity to have more traction for progress in a more specialized area.
To that end, Mohsin is currently working on studying how low-GWP refrigerants perform in compressors. Low-GWP is short for low global warming potential. Mohsin explained, “current refrigerants, they have a high-GWP” which is bad news for everyone. There has been a shift in regulations around the world due to concerns about how this impacts the environment. Mohsin’s work looks at how the use of low-GWP refrigerants affect overall compressor performance and what can be changed within a compressor to improve its performance.
His work started by understanding how to mathematically describe compressors and select the appropriate software to use to simulate them (Tanveer and Bradshaw (2020), Tanveer et al. (2022)). He then used what he learned to explore one novel compressor (spool compressor) and one legacy compressor (scroll compressor) to understand what tradeoffs would exist using new low-GWP refrigerants (Tanveer and Bradshaw (2021), Tanveer et al., (2022a)).
Mohsin hopes his work will lay a solid foundation for a base study of low-GWP refrigerant behavior and will be used as a benchmark for the industry. He hopes to see this process become more automated, so when engineers plug in a refrigerant into their simulations, they will know how it will behave in a compressor in any given situation.
Mohsin has already received an offer of employment with Trane Technologies. He plans to join them on the first of the new year, where he will do design work on the productive element of heat exchangers and help with improving compressor modeling.
References:
Tanveer, M., Bradshaw, C. R., (2020). Quantitative and qualitative evaluation of various positive-displacement compressor modeling platforms. International Journal of Refrigeration. Vol. 119. Pp. 48-63. https://doi.org/10.1016/j.ijrefrig.2020.07.009
Tanveer, M., Bradshaw, C. R., (2021). Performance evaluation of low-GWP refrigerants in 1–100 ton scroll compressors. International Journal of Refrigeration. Vol. 129. Pp. 317-331. https://doi.org/10.1016/j.ijrefrig.2021.05.008
Tanveer, M., Bradshaw, C. R., Ding, X., Ziviani, D., (2022). Mechanistic chamber models: A review of geometry, mass flow, valve, and heat transfer sub-models (2022) International Journal of Refrigeration. Vol. 142. Pp. 111-126. https://doi.org/10.1016/j.ijrefrig.2022.06.016
Tanveer, M., Bradshaw, C. R., Orosz, J., Kemp, J., (2022a). Optimum spool aspect ratio for R134a and R1234ze(E). International Compressor Engineering Conference. No. 1379. https://docs.lib.purdue.edu/icec/2762/