• Shell and tube design
• High heat transfer efficiency
• Borosilicate glass construction
• Industrial grade performance

Design and operating specifications for Goel’s glass shell-and-tube heat exchangers include:

– **Design Types**: RGG (glass/glass/glass), RGM (glass tube, non-aggressive shell), RMG (non-glass shell, glass tube)

– **Overall Heat Transfer Coefficient (U)**: Higher by factor ~3 relative to coil designs

– **Pressure Drop**: Low shell-side pressure drop; coil-type competitors may incur 2–3 kg/cm² drop on coil side

– **Mechanical Construction**: PTFE sockets & ferrule-type seals, baffles for turbulence enhancement, joint-less tubes for pressure rating

– **Dimensional Range**: Tube counts (e.g., 37, 73, 151), shell diameters (e.g. DN150, DN225, DN300), lengths up to ~4.5 m, baffle numbers from 7 to 23 depending on design

– **Temperature & Pressure Limits**: Typical working temp difference up to 120 °C; pressures, e.g. shell/tube sides up to 2–3.5 kg/cm² depending on model

– **Materials**: Borosilicate glass tubes, PTFE/packing seals, structural frames in SS or FRP, options for shell materials when required

Shell-and-tube heat exchangers by Goel are used in:

– **Cooling and heating duties** in chemical, pharmaceutical, and process industries where corrosive fluids are involved

– **Condensation and evaporation** duties, especially in systems requiring precise thermal control and vacuum compatibility

– **Aggressive chemical processes** (acidic, halogenated, etc.) where glass wetted parts offer better longevity than metals

– **Compact installations** needing high heat transfer area in constrained spaces, by leveraging modular tube bundles and optimized HTAs

– **Systems requiring maintenance and modular repairability**, since tubes can be replaced individually without discarding the full shell structure