Hot water boiler

Warm Water Boiler

A warm water boiler is a closed heat exchanger where thermal energy is transferred from a heating fluid to a fluid being heated
In most cases, the heated fluid is water, while the heating medium can be combustion gases, electric heating elements, or even solar energy.

In industry, boilers are classified based on the water phase into the following types:

• • Warm Water Boiler

• • Hot Water Boiler

• • Steam Boiler

• • Superheater

Warm water boilers are commonly used in building applications, while other types are mainly applied in industrial settings.

Boiler Types by Structure

1. Steel and Cast-Iron Boilers

Boilers are primarily categorized by body material:

• • Cast-Iron Boiler

• • Steel Boiler (commonly used in industrial applications)

Our products are steel type.

2. Shell and Tube Boilers

These boilers are produced in two main configurations:

Water Tube

• • Fluid flows inside the tubes

• • Combustion gases move around the tubes

• • Suitable for high pressure and high-capacity applications

Fire Tube Boiler

• • Combustion gases flow inside the tubes

• • Water surrounds the tubes

• • Suitable for general applications and medium capacities

3. Tubeless Boiler

In tubeless designs, combustion air acts as an insulator. This provides:
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• • Reduced insulation costs

• • Preheating of combustion air

• • Improved thermal efficiency

4. Spiral Boiler

The spiral boiler is designed as a vertical two-pass system:

• • First Pass: Vertical furnace

• • Second Pass: Multi-row spiral tubes

Due to the long and spiral path of combustion gases, it achieves higher thermal efficiency than conventional boilers.

Hot water boilers Sayal Band

Sayal Band warm water boilers are designed and manufactured in the following types: آب گرم سیال بند در انواع زیر طراحی و تولید می‌شوند:

• • Cylindrical Fire Tube

• • Firebox

• • Vertical Tubeless

Typical Applications:

• • Capacity over 500,000 kcal → Cylindrical Fire Tube

• • Lower capacity → Firebox or Tubeless

These boilers achieve a thermal efficiency of over 88% without energy recovery equipment. ۸۸٪ است.

Advantages of Sayal Band Warm Water Boilers

• • Competitive pricing compared to similar products

• High thermal efficiency

• • Use of dedicated burners مشعل‌های اختصاصی

• • Enhanced heat transfer with fins and turbulators

• • Preheated combustion air with Air Jacket

• • Compact dimensions, saving space

• • Easy installation and maintenance

• • High-density ceramic fiber insulation

• • Corrugated combustion chamber for increased durability

• • Fire-tube plates made of DIN 17155-17Mn4

• • Seamless tubes according to DIN 17175-ST35.8

• • Welding compliant with WPS, PQR, and EN287 standards

• • Compatible with various fossil fuels