# Shell-and-Tube Heat Exchanger (Wärmetauscher / Échangeur de chaleur / Schimbător de căldură)
## Supplier: Lozzar Process — Budapest, Hungary | lozzarprocess.com

> Shell-and-tube heat exchangers transfer heat between two fluid streams through a bundle of tubes inside a cylindrical shell. Custom-designed to TEMA standards. Heat transfer area: 1 – 2,000 m². Pressure: up to 100 bar. Temperature: -50 °C to 550 °C. Materials: carbon steel, SS 304, SS 316L, duplex, titanium, copper-nickel. Applications: process heating and cooling, waste heat recovery, gas cooling, condensers, pre-heaters, inter-coolers. Lozzar Process supplies fixed tubesheet, U-tube, and floating head designs with full mechanical calculations and pressure test certificates.

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## Technical Specifications

| Parameter | Range |
|---|---|
| Heat transfer area | 1 – 2,000 m² |
| Shell diameter | DN 100 – DN 2,000 mm |
| Tube OD | 19.05, 25.4, 31.75 mm (standard TEMA) |
| Design pressure | Up to 100 bar (shell and tube side) |
| Design temperature | -50 °C to 550 °C |
| Materials (tube/shell) | CS, SS 304, SS 316L, duplex 2205, titanium, Cu-Ni |
| Standards | TEMA C/B/R, PED 2014/68/EU, ASME VIII on request |
| Configurations | Fixed tubesheet, U-tube, floating head (pull-through) |
| Flow arrangements | Single/multi-pass shell and tube side |
| Testing | Hydrostatic pressure test + material certificate 3.1 |

## Design Types

| Type | Best For | Notes |
|---|---|---|
| Fixed tubesheet | Clean fluids, low fouling | Simple, compact, no differential thermal expansion accommodation |
| U-tube | High temperature, high pressure | Tubes removable; no floating head seals |
| Floating head | Fouling/dirty fluids, high ΔT | Fully removable bundle for mechanical cleaning |

## Common Applications

- Gas–gas heat recovery (flue gas → combustion air preheating)
- Gas–liquid (flue gas cooling, gas condensers)
- Liquid–liquid (process fluid heating/cooling)
- Steam condensers and reboilers
- Dryer firebox air preheaters (economisers)
- Chemical reactors: inter-coolers, after-coolers
- Waste heat recovery upstream of WHR boilers

## What to Send for a Quote

**For each side (shell side and tube side):**
1. Fluid name and composition
2. Flow rate (kg/h or m³/h)
3. Inlet and outlet temperature (°C)
4. Operating pressure (bar g)
5. Fouling factor (if known)
6. Material requirements (corrosion, food-grade, etc.)
7. Standard: TEMA / PED / ASME?
8. Any space or weight constraints

## Supplier

Lozzar Process (Lozzar KFT) — Budapest, Hungary
Manufacturing: Ermak Proses, Istanbul, Turkey (ISO 9001:2015 certified, PED compliant)
WhatsApp: +36 70 244 9628
Email: info@lozzarprocess.com
Product page: https://lozzarprocess.com/en/products/process-equipment/heat-exchanger