Designed by the Original Patent Holder of RV and HRV Series

The DFHRV floating coil half storage type heat exchanger has a strong technical background. The design was led by Senior Engineer Liu Zhenyin, who holds the original patents for the RV and HRV series. This product combines floating coil heat exchange technology with the guide flow and baffle devices from the RV-04 model. The heat exchange coil consists of multi-pass spiral floating tube groups. During operation, the coil moves at high frequency. This movement creates turbulent flow and improves heat transfer. The product delivers 1.5 to 1.8 times the heat exchange capacity of comparable HRV models. Volume utilization reaches 100%.

Automatic Scale Removal Saves Maintenance Cost

The floating coil design offers a unique advantage. When high-temperature heating medium flows through the thin-wall copper tubes, the copper and scale deposits expand at different rates. This difference causes the scale to crack and fall off automatically. You do not need to schedule annual maintenance to remove scale buildup. This feature can help reduce long-term operating costs. The shell includes a manhole for inspection. The design does not require large maintenance clearances. This makes it especially suitable for district heating systems in residential complexes and high-end apartment buildings. The equipment footprint can also be very small. The Floating Coil Half Storage Type Heat Exchanger is a practical choice when space and maintenance costs are important considerations.

ERP Management and Custom Production

Our company uses an ERP system to manage every production stage. We support non-standard custom orders with no minimum quantity requirements. The standard lead time is about 50 days. We send progress updates at key production milestones. Every unit undergoes 100% inspection before shipment. We provide product certificates, material test reports, inspection reports, and hydrostatic test reports with each delivery. The 12-month warranty covers manufacturing defects. Export packaging uses stretch film and bubble film. Wooden frames or crates are available on request. Our after-sales team provides manuals with each shipment. We can also arrange on-site guidance when needed. The DFHRV has been installed in many high-end residential projects where reliable heat exchange and low maintenance are priorities. The Floating Coil Half Storage Type Heat Exchanger has been used in projects that require both efficient heat transfer and convenient maintenance.

Technical Specifications

Parameter	Value
Equipment Type	Guide flow floating coil half storage type heat exchanger
Heat Exchange Capacity	1.5 to 1.8 times comparable HRV models
Volume Utilization	100%
Steam-to-Water K-Value	Approx. 2,100 Kcal/m²·h·°C
Water-to-Water K-Value	Approx. 1,200 Kcal/m²·h·°C
Heated Water Pressure Drop	0.5 to 1.0 meters
Shell Material	Carbon steel / stainless steel / carbon steel lined with stainless steel / carbon steel lined with copper
Tube Material	High-quality thin-wall T2 copper / stainless steel