Heat-transfer equipment and water treatment should be selected together. The exchanger defines the thermal duty, while water chemistry and fouling risk determine how well that duty can be maintained.
Integrate YONGFAN gasketed plate heat exchangers (0.2–500 m² area, 4–900 m³/h, approach to ~1 °C), packaged plate units (0.21–21 MW), JFSW double-thread turbulent tube exchangers (0.35–5.6 MW), U-tube & floating coil storage exchangers (100–15,000 L), direct-mixing heating units, inline JFGP electronic water treatment (<700 mg/L CaCO3), wrap-around induction processors (to 2,000 mg/L CaCO3), RLC ion-exchange softeners (residual <=0.03 mmol/L), and WHQC physical full-process filters.
Operating gasketed plate heat exchangers on high-hardness water without softening or physical treatment causes rapid scaling of 0.5 mm channels.
Sizing storage heat exchangers purely on average hourly kW without buffering peak morning hot-water draw causes sudden cold water supply.
Installing electronic/induction descalers where true soft water (<0.03 mmol/L) is required by boiler or process specifications.
Using standard SUS304/316 plates in high-chloride or seawater cooling circuits without upgrading to Titanium TA1 metallurgy.
Compact indirect heat transfer between fluid loops (plate area 0.02–1.3 m²/plate, assembly area 0.2–500 m², flow 4–900 m³/h, DN15–DN250, PN 1.0/1.6/2.5 MPa, design temp to 170 °C, approach to ~1 °C). Plates in SUS304, 316L, 321, Titanium TA1, Hastelloy, RS-2; gaskets in EPDM, NBR, FKM, Silicone.
Factory-assembled skid integrating plate heat exchangers, circulation pumps, make-up system, valves, sensors, piping, and electrical control cabinet (capacity 0.21–21 MW per unit, heating area 3,000–300,000 m²). Available in steam-to-water (≤0.4 MPa steam) and water-to-water (95/70 °C to 60/85 °C or 45/55 °C) with ZS VFD or ZW expansion make-up.
Enhanced tube-type heat exchanger for heating, air conditioning, and domestic hot water (0.35–5.6 MW, steam-to-water 0.2 MPa steam or water-to-water). Features double-thread copper or stainless-steel tubes in vertical or horizontal vessels, delivering high turbulence, low scaling tendency, and easy mechanical cleaning.
Buffers peak hot water demand with built-in storage (100–15,000 L volume). U-tube storage (10 kW–10 MW, to 2.5 MPa) features a removable flanged tube bundle for easy descaling; Floating-coil storage (steam 21–1,045 kW, water 10–523 kW, 1.0/1.6 MPa) utilizes coil thermal movement for automatic scale-shedding in hard water.
Connects high and low heating zones hydraulically without an intermediate heat exchanger (0.14–4.2 MW per unit, 20–60 m elevation difference, flow 0.5–360 m³/h, system pressure 0.5–1.0 MPa, motor 0.75–110 kW). Eliminates heat exchanger approach loss and simplifies high-rise district heating connections.
Inline high-frequency electromagnetic water processor installed directly into the pipe (DN15–DN600, ≤95 °C water, 220 V 50 Hz, 10–500 W, head loss ≤1.5 m H2O, frequency to 12 MHz). Treats water with hardness <700 mg/L as CaCO3 to prevent crystalline scale adhering to pipe walls and heat exchangers.
Non-invasive physical water treatment utilizing external coils wrapped around the outside of existing pipes without cutting pipework (DN15–DN700, <120 °C, 220 V 50 Hz, 10 Hz–500 kHz, 25–600 W). Treats high-hardness water up to 2,000 mg/L as CaCO3, altering crystal nucleation to prevent scale formation.
RLC fully automatic sodium ion-exchange softeners remove calcium and magnesium ions, reducing residual hardness to ≤0.03 mmol/L from raw water ≤10.0 mmol/L (inlet turbidity ≤1 NTU, resin life >3 yrs). WHQC provides physical integrated circulating water treatment with automatic self-cleaning backwash filtration (hardness ≤800 mg/L, ≤1.6 MPa).
| Project Problem | First Product Family | Documented Boundary | First Input to Confirm |
|---|---|---|---|
| Compact two-loop indirect heat transfer | Gasketed Plate Heat Exchanger | 0.2–500 m² area, 4–900 m³/h, DN15–DN250 | 4 design temperatures & fluid chemistry |
| Complete factory-assembled heating station | Packaged Plate Unit | 0.21–21 MW capacity (3,000–300,000 m²) | Heat source, secondary temp & thermal load |
| Tube-type heating / A/C / DHW duty | JFSW Turbulent Exchanger | 0.35–5.6 MW steam/water capacity | Duty temperature program (Heating/DHW) |
| Hot-water storage + removable bundle | U-Tube Storage Exchanger | 100–15,000 L storage, 10 kW–10 MW | Peak draw demand & storage volume |
| Storage in harder-water scaling duty | Floating Coil Storage Exchanger | 100–15,000 L (200–10,000 L std) | Water hardness & peak draw demand |
| High-rise hydraulic zone connection | Direct-Mixing Heating Unit | 0.14–4.2 MW; 20–60 m elevation diff | Heat load & high/low zone elevation |
| Inline physical scale & fouling control | JFGP Electronic Water Treatment | <700 mg/L hardness, ≤95 °C, DN15–DN600 | Water hardness & peak flow rate |
| Non-invasive wrap-around physical treatment | Broad-Spectrum Induction Processor | ≤2,000 mg/L hardness, <120 °C, DN15–DN700 | Hardness & zero-shutdown installation |
| True calcium/magnesium hardness removal | RLC Automatic Water Softener | Raw hardness ≤10 mmol/L, residual ≤0.03 mmol/L | Raw water hardness & required soft flow |
| Integrated physical treatment + filtration | WHQC Physical Integrated Treatment | Hardness ≤800 mg/L, ≤50 °C, ≤1.6 MPa | Water chemistry & suspended solids load |
Provide Primary In/Out temps, Secondary In/Out temps, total heat load (kW/MW), and flow rates.
Select Gasketed Plate, Packaged Skid, JFSW Turbulent Tube, or U-Tube/Floating Storage (L).
Provide total hardness (mg/L CaCO3 or mmol/L), chloride content (ppm), turbidity, and pH.
Specify inline JFGP (<700 mg/L), wrap-around induction (≤2,000 mg/L), or RLC softener (≤0.03 mmol/L).
YONGFAN thermal engineers will verify plate heat transfer coefficients (LMTD), check fouling factors, select plate metallurgy (SS316L / Titanium), size water softeners, and supply certified drawings.
Plate packs, tube bundles, and pressure vessels undergo hydrostatic pressure verification at 1.25× design pressure.
Primary and secondary channels undergo differential pressure testing to verify zero cross-contamination.
JFGP electronic water treatment electrodes undergo 5,000 V high-voltage insulation and frequency sweep testing.
Packaged heat exchange skids undergo full-load pump flow/head verification and control cabinet functional simulation.
Choose based on fluid, approach temperature, and footprint. Plate exchangers are compact, highly efficient (approach to ~1 °C), and serviceable. JFSW double-thread tube exchangers suit higher fouling and industrial duties.
Use storage when hot water demand has high short-duration peaks (e.g. hotels, dorms) that are better buffered by stored volume (100–15,000 L) than oversized instantaneous heaters.
U-tube bundles can be withdrawn completely for cleaning. Floating-coil exchangers use coil thermal movement under temperature cycling for automatic scale-shedding in harder water.
Use packaged units when you want the heat exchanger, circulation pumps, make-up system, valves, instruments, and controls factory-assembled on a single skid.
JFGP is installed inline into the pipe (<700 mg/L hardness, ≤95 °C, DN15–DN600). The induction processor wraps around the outside of existing pipework without cutting (≤2,000 mg/L, <120 °C, DN15–DN700).
No. Electronic and induction processors alter crystal nucleation to prevent scale adhesion, but they do not remove calcium/magnesium ions. For true ion removal, specify an RLC softener.
The documented RLC softener reduces water hardness to ≤0.03 mmol/L from raw water up to ≤10.0 mmol/L.
Yes. Raw water inlet turbidity should be ≤1 NTU to prevent fouling the ion-exchange resin beads; install upstream pre-filtration for higher turbidity.
Specify Titanium TA1 plates whenever chloride levels are high (e.g. seawater cooling, swimming pools, aggressive saline fluids) to prevent chloride stress cracking in stainless steel.
Yes, where the project permits direct hydraulic connection between high and low heating zones, eliminating intermediate heat exchanger approach losses.
Physical/electronic water treatment alters scale crystal morphology; it does not replace ion-exchange softening where soft-water standards (<0.03 mmol/L) are mandated.
Gasket materials must match fluid chemistry and temperature (EPDM ≤150 °C, NBR ≤110 °C, FKM ≤170 °C); do not exceed gasket limits.
Do not specify JFGP for water hardness exceeding 700 mg/L as CaCO3; use broad-spectrum induction processors or RLC ion-exchange softeners.
High-rise direct-mixing units require approval for hydraulic connection between zones; verify static pressure ratings on lower-zone radiators and pipework.
Send your four design temperatures, heat load, fluid composition, and water analysis report. YONGFAN thermal and water treatment engineers will calculate heat transfer areas, select metallurgy, size water softeners, and supply certified submittals.
