Glass Shell and Tube Heat Exchangers

Glass Shell and Tube Heat Exchangers

A Glass Heat Exchanger is a specialized thermal equipment designed to transfer heat from one medium to another through conduction, while keeping both fluids physically separated. These exchangers are widely used where corrosion resistance, purity, and thermal efficiency are critical.

For example:

• Cooling applications – Hot process fluids (oil, chemicals, solvents) are cooled using water or chilled media
• Heating applications – Cold fluids are heated using hot water, steam, or thermal oil
• Condensation & evaporation – Vapors are condensed or liquids are evaporated under controlled conditions

In Shell and Tube Glass Heat Exchangers, one fluid flows inside glass tubes, while the other circulates around the tubes within the shell, enabling efficient heat transfer with minimal contamination risk.

Working Principle

• Heat flows from the hot medium to the cold medium
• Transfer occurs through borosilicate glass walls
• Smooth glass surfaces ensure high thermal efficiency
• No direct contact between fluids, ensuring process safety and purity

Why Glass Over Metal?

Glass heat exchangers are a superior alternative to metallic exchangers in aggressive environments:

• Resistant to acids, alkalis, solvents, and corrosive chemicals
• Eliminates metal ion contamination
• Ideal for pharmaceutical, chemical, and fine chemical processes

They replace expensive materials such as:
Graphite, Hastelloy, Titanium, Copper-Nickel, Tantalum, etc.

Salient Features & Advantages

• Universal corrosion resistance
• Smooth non-fouling glass surface ensures consistent heat transfer
• Vertical or horizontal installation flexibility
• Easily replaceable glass tubes for cleaning & maintenance
• Wide range of Heat Transfer Areas (HTA)
• Lightweight construction for easy installation
• Economical lifecycle cost
• High HTA in compact space – ideal for space-constrained plants

Construction Highlights

• Borosilicate Glass 3.3 tubes & shell
• Precision-engineered PTFE sealing systems
• Modular tube bundle design
• Leak-proof ferrule-type tube sealing
• Optional SS / FRP support structures

Available Design Types

Glass Heat Exchangers are available in two fundamental designs:

 1. Conventional Coil Type Condensers

• Glass coils fused inside a glass shell
• Suitable for moderate heat duties
• Compact and economical

 2. Shell & Tube Type Glass Heat Exchangers

• Multiple straight glass tubes inside a shell
• Higher heat transfer efficiency
• Lower pressure drop
• Suitable for large-scale industrial operations

Applications

• Chemical & Petrochemical Industries
• Pharmaceutical & API Manufacturing
• Fine Chemicals & Specialty Chemicals
• Acid Recovery Systems
• Solvent Condensation & Recovery
• Distillation, Evaporation & Reboiling Systems

Typical Functions

• Coolers
• Heaters
• Condensers
• Evaporators
• Re-Boilers

Key Benefits for Process Industries

• Long service life in aggressive media
• Reduced downtime due to easy maintenance
• Stable performance under vacuum and pressure
• Clean, contamination-free heat transfer