Comparison Table of the Best Enthalpy Recovery Ventilators
| airAC Rotary Air Valve Type | Stirling Technology Rotary Random Matrix Type | |
| Enthalpy exchanger |
Enthalpy exchanger |
|
| Aluminium plate and MultiPatented Rotary Air Valve (RAV) |
Random matrix rotor, running gear separator |
|
| Concept |
Heat carrying warm air absorbing energy in aluminium, air flows are changed by Rotary Air Valve while energy transfers into cooler air. |
Heat carrying exhaust air transfers energy to surface of rotary heat exchanger and radiates heat to supply air while core rotating. |
| Running parts |
Light rotor air valve by motor Power: 10 watts DC.No loosing or broken belt |
Rotor revolution by motor V-belt Power: 1/3 hp Checking and renewal of the belt is required. |
| Static pressure loss |
10 – 30mm Aq |
10 – 40mm Aq |
| Sensible Recovery |
90 - 100% |
86% |
| Efficiency |
Non-freezing/frosting Unique and free evaporative cooling |
|
| Enthalpy Effectiveness |
90% |
80% |
| Air flow rate |
3-5m/s |
1-3m/s |
| Regulation |
Immediate. Unique control available for any building automation. Wireless control (additional). |
Slow |
| Contamination |
Low contamination. No accumulation on surface. No extra air flow for cleaning. |
Core contamination |
| Filtration |
According to the requirement up to 99,999995%. Only one filter is needed which is after the device in a supply air flow. |
95% |
Operating temperature |
-50 - +85°C |
|
Coating |
AntiBacteria, non-toxic, ecological, inorganic, and strongly fire retardant Available for ducting also |
N/A |
| Maintenance |
Six years without cleaning The AntiBacteria heat exchanger and reliability enable low life-cycle costs. Easy to move and clean. Non-rubbing heat exchanger. Only one filter. No belt. |
Occasional cleaning required. Frequent clogging. Heavy exchanger hard to move. The axle must be lubricated and changed. Heat transfer core is rubbing and it must be changed. Several filters must be changed. Belt must lubricated and changed. |
Installation |
With or without ducting. |
|
Applications |
Any (300 –series) 400 –series includes also heat pump cooling and heating. 600 -series for indoor swimming pool etc. dehumidification without additional energy. |
|
Patents |
Several Patents in Finland. Patent Pending: USA, Europe, China, Japan |