Heat Exchanger and Thermal System Design & Manufacturing
Products
Storage Calorifier (Spiral Coil)
  • Storage Calorifier (Spiral Coil)
  • Storage Calorifier (Spiral Coil)
  • Storage Calorifier (Spiral Coil)
  • Storage Calorifier (Spiral Coil)
  • Storage Calorifier (Spiral Coil)
Request a Quote

Storage Calorifier (Spiral Coil), Storage Water Heater

The storage calorifier (spiral coil) is an indirect water heating system that combines a floating coil heat exchanger with a storage tank structure. Its design provides a compact hot water solution with stable temperature control and reduced maintenance requirements. The floating coil structure is suitable for projects that require high hot water supply capacity while facing challenges such as hard water conditions, scale formation, or limited equipment room space.

Request a Quote
Features
  • Self-Cleaning Floating Coil Design: The heat transfer coil expands and contracts with temperature changes while also responding to fluid pulsation during operation. This flexible movement creates continuous micro-vibration, which helps detach brittle scale deposits from the coil surface and reduces the need for chemical cleaning.
  • Easy Maintenance and Low Operating Cost: The detached scale settles at the bottom of the tank. Routine maintenance only requires opening the drain outlet for flushing, which simplifies cleaning procedures and reduces maintenance workload.
  • Efficient Insulation and Material Options: The standard 50 mm soft polyurethane foam or high-density fiberglass insulation layer reduces heat loss. Combined with stainless steel or copper tube materials, the equipment maintains stable hot water storage performance and hygiene conditions.
  • Certified Design Standards: Designed according to PED 97/23, BS PD5500, DIN4753, GB150, and GB151 standards.
Customization Range
  • Heat Transfer Tube Materials: Copper , Stainless steel 304, Stainless steel 316 , Stainless steel 316L , Stainless steel 316Ti , SU444
  • Technical Specifications:
      • Pressure Rating: Up to 25 bar
      • Storage Capacity: 100 L to 15,000 L
      • Heat Transfer Capacity: 10 kW to 1,400 kW
  • Insulation Options:
      • Standard 50 mm soft polyurethane foam
      • Fiberglass insulation with conductivity 32 kg/m³
      • Custom insulation available upon request
Specifications
Model Storage Capacity Diameter Width Height Net Weight Heating Capacity (kW) Connection Size (mm)
D W1 W2 H1 H2 10Bar 16Bar Water-to-water Inlet Outlet Return
L mm mm mm kg Primary side: 80/60℃ Secondary side: 15/60℃ Flange
ISC 200 500 740 1330 1330 840 80 110 14 32 32 25
500 650 890 1840 1850 990 110 150 35 40 40 25
750 750 990 2040 2040 1090 160 190 55 50 50 25
800 800 1040 1950 1940 1140 195 250 60 50 50 25
1000 900 1140 1940 1935 1240 245 330 70 50 50 25
1500 1000 1240 2290 2290 1340 350 440 105 50 50 25
2000 1100 1340 2500 2500 1440 460 550 140 50 50 32
2500 1300 1540 2310 2310 1640 550 700 175 50 50 32
3000 1300 1540 2680 2680 1640 680 920 210 50 50 32
4000 1300 1540 3440 3440 1640 900 1250 280 65 65 32
5000 1500 1740 3280 3280 1840 1200 1600 350 65 65 32
6000 1600 1840 3450 3450 1940 1470 2030 420 80 80 50
7000 1600 1840 3940 3940 1940 1830 2340 490 100 100 50
8000 1800 2040 3630 3630 2140 2000 2560 560 100 100 50
9000 1800 2040 4030 4030 2140 2160 2900 630 100 100 50
10000 2000 2240 3700 3700 2340 2230 3180 700 100 100 50
Specifications
  • Inspection manhole
  • Temperature sensor port
  • Drain port
  • Cold feed
  • Secondary return
  • Hot water outlet (hot draw)
  • Pressure gauge
  • Temperature gauge
  • Vent
  • Safety valve
  • Spare connection
  • Primary flow (steam inlet)
  • Primary return (condensate outlet)