Special Sessions

 

SPECIAL SESSION: Heat Transfer Advances for Compact Heat Exchangers


Special Session Chair: Dr. Ting Ma (Xi'an Jiaotong University, China)
Special Session Co-Chair: Dr. Yitung Chen (University of Nevada-Las Vegas, USA)

Compact heat exchangers are the most important components to transfer the thermal energy from one loop to the other loop in many high-efficiency energy and power systems, such as Heating, Ventilation and Air Conditioning (HVAC), Microturbine, Industrial Waste Heat Recovery System, Very High Temperature Gas-cooled Reactor, Solar Energy System, Supercritical CO2 Brayton Cycle, and Natural Gas Liquefaction System. Over the last 20 years, many new heat transfer enhancement technologies, such as vortex generators, primary surfaces, mini-channels and micro-channels, have been applied to the compact heat exchangers and showed promising thermal-hydraulic performance. Besides high-efficiency performance, the compact heat exchangers should have good high temperature or high pressure resistances in many applications. A representative high temperature and high pressure compact heat exchanger is the printed circuit heat exchanger with mini-micro channels, which is fabricated by photochemical etching and diffusion bonding technologies. However, there are still many challenges for the wide applications of compact heat exchangers. This special session will focus on the heat transfer advances for compact heat exchangers for various applications.


SPECIAL SESSION: Thermal Energy Storage


Special Session Chair: Prof. Yuri Aristov (Boreskov Institute of Catalysis, Novosibirsk, Russia)
Special Session Co-Chairs: Prof. Ruzhu Wang (Shanghai Jiaotong University, Shanghai, China) and Prof. S.S. Murthy (Indian Institute of Science, Bengaluru, India)

Thermal energy storage (TES) is an emerging technology currently used to ensure a temporal coherence between heat production and consumption. Incorporation of a proper TES system reduces the amount of excess heat that would normally be wasted. TES can be achieved with widely differing technologies, including sensible, latent and chemical (adsorption) storage. Depending on the specific technology, it allows excess thermal energy to be stored and used hours, days, or months later, at scales ranging from individual process, building, multiuser-building, district, town, or region. As renewables gain a greater foothold in the energy system, the importance of TES is going to increase in kind. With the ongoing gradual shift away from traditional baseload energy sources, the development of efficient TES systems is imperative. This special session will focus mainly, but not only, on

  • -sensible heat storage;
  • -latent heat storage (PCMs);
  • -chemical and adsorptive heat storage;
  • -short and long (seasonable) heat storage;
  • -low-, middle- and high-temperature TES;
  • -heat storage in buildings;
  • -heat and mass transfer in TES systems.