Application
The plastic heat recovery exchangers are generally used for high-efficiency heat recovery from return air to preheat fresh air supplied to residential, commercial and industrial buildings.
Basic characteristic
The plate heat exchangers are available in two basic configurations – cross-flow with efficiency approx. 50 to 67 % and counterflow with efficiency 70 to 90 %. All types of the plate exchangers are made of hPS plastic. They are characterized by low weight, high recovery efficiency, hermetic separation of supply and exhaust air, high resistance against aggressive environment (e.g. in swimming pool halls, industrial areas), and low hydraulic pressure drop.
The exchangers are available in number of different designs and sizes according to customers’ needs. For very aggressive environment the are built in a plastic casing. They are available with an optional built-in bypass.
Features
- High recovery efficiency (54 to 90 % based on type)
- Designed for airflow 150 m3/h to 17.000 m3/h
- Low pressure drop
- Low weight
- High corrosion resistance in moist and aggressive chemical environment
- Wide design variability including atypical and special custom-made solutions
Overview of available types
| Name | Available types | Brief description | Optional accessories | Approx. airflow [m3/h] |
Approx. recovery efficiency [%] |
|---|---|---|---|---|---|
| RVU |
|
General-purpose exchanger in insulated casing, with round and rectangular ports, ceiling-suspended, floor-standing and wall-mounted position |
|
100 to 7.000 |
50 to 92 |
| RVX |
|
General-purpose exchangers for higher airflow, for various use due to optional accessories (they basically are “units without fans“) |
|
1.000 to 30.000 |
48 to 85 |
| RV |
|
General-purpose exchanger for ducted unit design |
|
200 to 6.000 |
48 to 85 |
| RVT |
|
Framed design connectable to ductwork air distribution |
|
1.000 to 24.000 |
48 to 70 |
| RVT-P |
|
Framed design made of polypropylene connectable to ductwork air distribution – increased chemical resistance | - | 1.000 to 24.000 |
48 to 70 |
| RVZ-P |
|
All-plastic design with increased chemical resistance | - | 500 to 8.000 |
48 to 85 |
RVU
- General-purpose design in insulated casing, with front access door
- Built-in cross-flow (K) or counterflow heat recovery exchanger in three sizes (S1, S2, S3), with efficiency up to 90 %
- Optional built-in bypass (B), mixing damper (C), supply air (Fe) and return air (Fi) filter, supply air (Ke) and return air (Ki) shutoff damper – in any combination
RVX
- The most general-purpose design; it basically is a „unit without fans“
- Built-in cross-flow (K) or counterflow (S) heat recovery exchanger
- Optional built-in bypass (B), mixing damper (C), supply air (Fe) and return air (Fi) filter, water heating coil (T), water cooling coil (CHW), DX cooling coil (CHF), supply air (Ke) and return air (Ki) shutoff damper – in any combination
RV
- General-purpose type with flat flanges
- Built-in cross-flow (K) or counterflow (S) heat recovery exchanger
- Generally used together with standard duct elements of most European manufacturers, with unified sizes and connections
- Optional built-in bypass (B), possibly with an actuator
RVT
- Cross-flow type (K) built in a frame to be connected to ductwork
- Unified module with flange width of 710 mm
- Height of 500, 1000, 1500 and 2000 mm (atypical sizes on request)
- Optional built-in bypass BP), possibly with an actuator
RVT-P
- Special type with increased chemical resistance; modification of the RVT design
- Cross-flow exchanger (K) built in a polypropylene frame with flangeless ports and threaded M8 holes for connection to ductwork
- Unified module with flange width of 710 mm
- Height of 500, 1000, 1500 and 2000 mm (atypical sizes on request)
RVZ-P
- Special type with increased chemical resistance
- Cross-flow exchanger (K) built in a polypropylene frame with flangeless rectangular ports
- Unified module with flange width of 710 mm
- Height of 310, 380, 530 and 780 mm (atypical sizes on request)