Isotherm, Inc.

Does Annular Flow Boiling Inside a Tube improve Heat Exchanger Performance?

Does Annular Flow Boiling Inside a Tube improve Heat Exchanger Performance? Vast literature is available about two-phase flow boiling in horizontal round tubes in heat exchangers. Several studies on flow pattern and mapping are also available. However, limited literature is available about two-phase flow in small cylindrical annular passages. A detailed experimental study was conducted […]

Why does Carbon Dioxide (CO2) stand out in a DX Heat Exchanger in low temperature systems?

Why does Carbon Dioxide (CO2) stand out in a DX Heat Exchanger in low temperature systems? Since the Kigali Amendment of Montreal Protocol in 2016, the world refrigeration community has been looking more into the natural refrigerant route. The Kigali Amendment calls for the phase out of Hydrofluorocarbons (HFC) as follows: Developed countries: 10% reduction […]

Next Generation Power Plants: Supercritical Carbon Dioxide

Next Generation Power Plants: Supercritical Carbon Dioxide When Carbon Dioxide (CO2) operates above its critical point, it is called Supercritical Carbon Dioxide (sCO2) where there is no distinction between liquid and gas phase. In this phase CO2 undergoes a continuous, non-isothermal transition from “gas-like” to “liquid-like” properties resulting in significant spikes in specific heat and […]