A useful case study should show more than what equipment was supplied. It must explain what the project needed, what operating conditions mattered, why a particular product architecture was selected, how the configuration was confirmed, and what support was required from selection through delivery.
YONGFAN Case Studies are organized around the engineering logic behind the project—not just glossy equipment photographs.
Navigate documented project records classified by technical challenges across primary commercial, industrial, and infrastructure categories.
Analyze technical solutions grouped by mechanical domain, including airside dynamics, particulate filtration, chemical adsorption, thermal transfer, and hydronic balancing.
Selection cases resolving complex duct resistance, acoustic noise limits, high-temperature smoke extraction, and pressure modulation.
Cases structured around airflow, collection efficiency, initial vs. loaded pressure resistance, and physical envelope constraints.
Molecular adsorption projects distinguishing between control-room indoor asset protection and industrial exhaust scrubber treatment.
Thermal management sizing differentiating plate, tubular, and storage configurations according to load curves, storage need, and water chemistry.
Complete water-side control cases integrating vacuum deaeration, expansion, booster sets, balancing manifolds, and chemical-free conditioning.
Terminal balancing and BMS automation resolving hunting actuators, flow overflow, and complex building zone thermal stability.
Every published case answers the exact same core engineering questions. We document the physical problem, the quantitative selection parameters, and the verified outcome.
Defines the facility classification and whether the scope was Greenfield New Construction, Brownfield Retrofit, Component Replacement, or System Upgrade.
Identifies the exact physical bottleneck—such as insufficient static pressure at loaded filters, corrosive gas ingress, or tight plant-room dimensions.
Provides quantified operational variables: CFM, static Pa, thermal kW, fluid flow, medium temperatures, water chemistry, and gas concentrations.
Explains the technical rationale—why a mixed-flow fan, a storage-type exchanger, or a deep-bed chemical module was selected over alternatives.
Documents whether the solution used a standard catalogue build, a configured platform (custom motor/material), or a bespoke engineered fabrication.
Outlines pre-shipment quality hold points: dynamic fan balancing, hydrostatic exchanger pressure checks, or filter DOP/PAO leak scanning.
Details services provided beyond the hardware: duty calculations, submittal drawings, factory acceptance audits, installation guides, and export logistics.
Only publishes authenticated commissioning results: airflow achieved, cleanroom grade met, or corrosive attenuation verified without unsupported claims.
When real project cases are published, each case page follows a uniform, data-first structure so consulting engineers can instantly evaluate relevance to their projects.
| Design Parameter | Target Requirement | Selected Configuration | Commissioned Result |
|---|---|---|---|
| Airflow / Medium Flow | 45,000 m³/h (Design Peak) | YF-SDF Mixed-Flow Array (2×Duty) | 46,200 m³/h @ Design Static |
| System Pressure Drop (ΔP) | 650 Pa (Including Loaded Media) | Low-Resistance Synthetic F8 + H14 | 610 Pa Initial Baseline |
| Contaminant Threshold | H2S < 3 ppb (ISA 71.04 G1) | PSA Deep-Bed Chemical Unit + Media | < 2.1 ppb Measured Indoor Level |
Authenticity Commitment: We never publish blanket claims such as “50% energy savings” or “zero maintenance” unless supported by signed customer commissioning certificates.
Review five detailed scenario studies illustrating how YONGFAN matches equipment architectures directly to complex operational problems.
Challenge: Upgrading cleanroom final cleanliness from ISO 7 to ISO 5 while managing restrictive static fan limits and preserving existing ceiling frame dimensions.
Engineering Focus: Sizing upstream F8/F9 pocket pre-filters to capture coarse particles, preventing early loading of high-efficiency H14 HEPA terminals.
Optimizing the complete filtration train rather than just swapping the final terminal filter. Upstream medium filtration reduced HEPA replacement frequency by 2.4×.
Challenge: Severe airborne H2S and SO2 infiltration causing accelerated copper creep corrosion on critical DCS circuit boards in a refinery control room.
Engineering Focus: Distinguishing between room positive-pressure pressurization and internal air recirculation polishing to establish ISA 71.04 Class G1 mild conditions.
Deploying a PSA fresh-air unit to maintain +25 Pa room pressurization combined with a CA deep-bed recirculation scrubber to eliminate door-ingress contaminants.
Challenge: Handling hot, moisture-laden, and acidic chemical vapors from a foundry furnace room that caused premature motor burnouts in standard duct fans.
Engineering Focus: Sizing T35-11 bifurcated axial fans where the motor is entirely isolated from the corrosive, high-temperature airstream in an insulated chamber.
Selecting bifurcated motor-isolated fan housings with anti-corrosion epoxy coatings, eliminating airstream heat transfer to the motor bearings.
Challenge: Providing adequate vehicle emission dilution during peak traffic and achieving reversible emergency smoke clearance during fire scenarios.
Engineering Focus: Calculating effective installed thrust (Newtons) based on tunnel cross-sectional area, traffic piston effect, wall friction, and thermal buoyancy.
Configuring SDS(R) 100% reversible jet fans with high-thrust acoustic silencer cowls, sized on dynamic thrust rather than uninstalled fan diameter.
Challenge: Balancing sharp morning peak domestic hot-water demands in a 500-room hotel without installing excessively oversized boiler heat exchangers.
Engineering Focus: Differentiating between instantaneous plate heat transfer (PHE) and thermal storage buffer architectures.
Selecting U-tube storage heat exchangers to buffer thermal capacity during off-peak hours, flattening the boiler firing curve and reducing connected boiler capacity.
Our expanding library is categorized across four dimensional taxonomies so engineering teams can immediately isolate relevant technical precedents.
If one of these documented case scenarios matches your current project challenge, share your available engineering data. Our engineering selection team will determine the relevant equipment category and confirm missing parameters.
