Wei WU, 吳偉

Dr. Wu’s systematical multi-level research work provides innovative ideas and promising solutions to the developments of sustainable HVAC and buildings. At fluid level, he investigated natural and low-GWP refrigerants for vapor-compression heat pumps as well as alternative working fluids for absorption heat pumps. At equipment level, he conducted many outstanding studies on performance improvement of heat pumps, including novel absorption heating cycles, novel ground source heat pumps, and hybrid heat pumps for renewable/waste energy utilization. At building level, his research was focused on HVAC and PV design and optimization for net-zero energy buildings in different climates. Specific research topics are briefed as follows: Novel absorption heating and cooling technologies. (1) Efficient utilization of fossil fuels; (2) Industrial energy saving; (3) Hybrid absorption-compression cycles; (4) Ionic-liquid absorption cycles. Renewable and waste energy technologies. (1) Solar heating and cooling; (2) Geothermal heating, cooling and power; (3) Waste heating, cooling and power. Advanced heat pump technologies. (1) Novel ground source heat pump (GSHP); (2) Hybrid GSHP for thermal balance and borehole reduction; (3) Hybrid solar-air-source heat pump; (4) Gas-engine heat pump. Natural and low-GWP refrigerants. (1) CO2 GSHP and performance improvement; (2) GSHP using various alternative refrigerants; (3) Advanced CO2 heat pump cycles; (4) Low-GWP cycle simulation and optimization. Net-zero energy buildings (NZEBs). (1) Energy-efficient and cost-effective HVAC in NZEBs; (2) Design and optimization of NZEBs in different climates; (3) Advanced energy systems in NZEBs

[2026] Absorption Thermal Energy Storage: Fundamentals and Advances. Wu, W., Ding, Z. & Sui, Y., 9 Mar 2026, 1st ed. Elsevier. RGC 11 - Research book or monograph (Author) [2026] Adaptive Flame-Retardant Cooling Interface And Method For Fabricating The Same. WU, W. (Inventor) & SUI, Z. (Inventor), 5 Mar 2026, (Accepted/In press/Filed) Priority No. 19/557,181. RGC 51 - Patents (CityUHK) [2026] Advances in hydrogel-based materials for improving building energy efficiency. Zou, W., Wu, W., Mo, J. & Chen, Z., Jan 2026, In: Renewable and Sustainable Energy Reviews. 226, Part B, 21 p., 116303. RGC 21 - Publication in refereed journal [2026] A flexible hybrid-energy heat pump using efficient ionic liquids for sustainable solar cooling. Sui, Y., Ding, Z., Sui, Z., Li, F., Lin, H. & Wu, W., 1 Apr 2