Heat exchange equipment must match duty, temperature program, pressure, water chemistry and maintenance strategy; the wrong architecture increases fouling, footprint, or plant-room complexity.
Compare YONGFAN plate, packaged skid, enhanced tube, storage, and direct-mixing heating equipment across heating capacities (0.14–21 MW), pressures (up to 2.5 MPa), approach temperatures (down to 1 °C), and metallurgy (316L, Titanium TA1, Hastelloy, Copper).
1 MW transferring steam to 85 °C water requires vastly different surface area than 1 MW transferring 95/70 °C water to a 45/55 °C floor-heating circuit.
Hotels with morning shower peaks require storage buffering. An instantaneous exchanger must be drastically oversized to follow peaks directly.
Standard 304/316 stainless plates corrode rapidly on seawater, brine, or high-chloride water. Titanium TA1 or Hastelloy must be matched to fluid chemistry.
Hard domestic water causes plate channel scaling. Floating-coil or withdrawable U-tube vessels provide self-descaling and mechanical cleanability.
Compact, serviceable two-loop heat transfer. Documented per-plate areas from 0.02 to 1.3 m², connections DN15–DN250, and design pressures up to 2.5 MPa. Full counter-flow approach temperatures down to 1 °C. SUS304/316L/Titanium TA1/Hastelloy plates; EPDM/NBR/Fluororubber gaskets.
Integrated plant-room skid combining plate exchanger, dual/triple circulation pumps, automated make-up system (ZS VFD or ZW expansion device), valves, sensors, and PLC control cabinet. Covers 3,000–300,000 m² heating area across 60/85 °C (NB) and 45/55 °C (K(D)B) programs.
Shell-and-tube construction with double-thread copper or stainless tubes that induce boundary-layer turbulence on both inside and outside tube walls. Documented on 0.2 MPa steam for heating (70→95 °C), A/C (50→60 °C), and domestic hot water (5→60 °C). Vertical or horizontal mounting.
Combines thermal transfer with stored hot-water volume. U-tube units feature flanged, withdrawable bundles for manual cleaning (up to 10 MW). Floating-coil units use thermal coil movement for automatic scale-cracking, ideal for hard water, solar thermal, and heat pumps.
Connects high- and low-zone water circuits directly through pressure-reducing valves, pumps, and PLC controls without an intermediate heat exchanger. Bridges 20–60 m hydrostatic elevation differences (0.5–1.0 MPa system pressure) across radiator (25 K ΔT) and floor heating (10 K ΔT).
| Product Family | What It Solves | Published Range Boundary | First Input to Confirm | Action |
|---|---|---|---|---|
| Plate Heat Exchangers | Compact, serviceable heat transfer between two circuits | 4–900 m³/h · Up to 500 m² · 1.0/1.6/2.5 MPa | Primary/secondary temperature programs & fluid chemistry | Configure PHE |
| Packaged Heat Exchange Units | Complete exchanger, pump, make-up & PLC control skid | 0.21–21 MW · 3,000–300,000 m² heating area | Heat source (steam/water) & total calculated heating load | Configure Skid |
| Tube Heat Exchangers | Enhanced turbulent tube steam-water or water-water transfer | 0.35–5.6 MW · Shell classes 200–700 | Duty temperature program (Heating, A/C, or DHW) | Configure Tube |
| Storage Heat Exchangers | Heat transfer plus domestic hot-water peak buffering | 100–15,000 L · U-tube up to 10 MW | Peak hot-water draw volume (L) & recovery window (min) | Configure Storage |
| Direct-Mixing Heating Units | High-rise heating zone connection without intermediate PHE | 0.14–4.2 MW · 20–60 m elevation difference | Zone elevation height (m) & terminal ΔT (25 K vs 10 K) | Configure Mixing |
Steam pressure (MPa) or boiler/district water supply & return temperatures (°C).
Target supply/return temperatures (°C) and total thermal load in kW or MW.
Maximum working pressure and allowable pressure drop (kPa) on both fluid circuits.
Chloride content (ppm), hardness, and pH to confirm plate/tube metallurgy.
YONGFAN engineers will calculate heat transfer area, check flow velocity, and provide dimensioned GA drawings.
Every plate pack, shell, tube bundle, and storage vessel undergoes hydrostatic pressure testing at 1.25× design pressure.
Single-side pressurization verifies zero cross-contamination between primary heat medium and secondary potable/heating circuits.
Packaged skids are assembled on structural steel bases with pumps, valves, instruments, and PLC wiring fully pre-tested.
Plate and tube metallurgy (316L, TA1, Hastelloy, Copper) is verified against raw material certificates before fabrication.
Start with Packaged Heat Exchange Units when pumps, make-up, and controls are needed on one skid. Use Plate Heat Exchangers if pumps are specified separately.
Review Floating-Coil Storage Heat Exchangers. Thermal expansion and contraction cycles naturally crack scale from the coil surface without chemical dosing.
Choose U-Tube Storage Heat Exchangers when site maintenance protocol prefers withdrawing the complete flanged bundle for direct inspection and replacement.
A packaged skid includes circulation pumps, variable make-up or expansion devices, valves, sensors, and pre-wired PLC control cabinets.
Review Direct-Mixing Heating Units (20–60 m elevation) when eliminating intermediate plate exchangers or rooftop buffer tanks is desired.
Heat source (steam/water), primary & secondary temperatures, thermal load (kW/MW), working pressure, and water chemistry (chlorides/hardness).
Do not use standard stainless plates on seawater or brine without upgrading to Titanium TA1 or Hastelloy.
Instantaneous exchangers cannot buffer peak domestic hot water draw without excessive boiler firing capacity.
Direct mixing connects fluid circuits; use plate heat exchangers when full hydraulic circuit isolation is required.
Floor heating (10 K ΔT) moves 2.5× more water flow than radiator heating (25 K ΔT) for the same MW thermal load.
Send your thermal load, temperature program, working pressure, and water chemistry. YONGFAN application engineers will verify heat-transfer surface area, pressure drop, and provide complete submittal drawings.
