How to choice ventilation system?
Heat exchangers might be devided to recuperators and regenerators. Recuperators are conventional heat exchangers, regenerators - periodic-flow devices.
Recuperators are conventional heat exchangers in which hot and cold gases flow steadily on opposite sides of a solid (usually metal) wall. Regenerators are periodic-flow devices. Fluid streams flow in opposite directions through passages in a wheel with heat storage walls. The wheel rotates, transferring heat from one stream to the other. Regenerators usually use a nest of very small parallel passages oriented axially on a wheel which rotates.
Recent improvements to technology have allowed recuperators to recover 90-95% of the waste heat, so there is no need to heat air which is supplied to room, there is less heat loss.
The main parameter for HRV - efficiency. This parameter informs about how much heat HRV returns back and how much it gives away. The lower efficency is, the higher power of heater must be.
One more immportant parameter - fan power. You gain cheaper exploitation when fan power is lower.
| Heat recovery ventilation | ||
| Renovent Excellent 180 | Renovent Excellent 300 | Renovent Excellent 400 |
| Ventilation capacity at 150 Pa [m3/h] | ||
| max. 180 | max. 300 | max. 400 |
| Total power input [W] | ||
| 18 - 86 | 9 - 66,2 | 8,6 - 98 |
| Rated power at 150 Pa [W] | ||
| 46 at 125m3/h | 40 at 210m3/h | 64 at 280m3/h |
| Dimension duct connection [mm] | ||
| Ø125 | Ø160 | Ø180 |
| Height [mm] | ||
| 600 | 765 | 765 |
| Width [mm] | ||
| 560 | 677 | 677 |
| Depth [mm] | ||
| 302 | 564 | 564 |
| Weight [kg] | ||
| 25 | 38 | 38 |
| Heat recovery rate max [%] | ||
| 95 | 95 | 95 |
| Constant Flow | ||
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| Standard Bypass | ||
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| Standard preheater | ||
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| Connection provisions for external preheater | ||
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| Connection provisions for humidity sensor | ||
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| Connection provisions for 2-zone demand flow | ||
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| Connection for timer | ||
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| Also available as PLUS version | ||
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| Heat recovery ventilation | |
| Renovent Sky 150 | Renovent Sky 300 |
| Ventilation capacity at 150 Pa [m3/h] | |
| max. 150 | max. 300 |
| Total power input [W] | |
| 8,7 - 77,8 | 11 - 72 |
| Rated power at 150 Pa [W] | |
| * | 51 at 210m3/h |
| Dimension duct connection [mm] | |
| Ø125 | Ø150/Ø160 |
| Height [mm] | |
| 200 | 310 |
| Width [mm] | |
| 660 | 644 |
| Depth [mm] | |
| 1000 | 1185 |
| Weight [kg] | |
| 24,5 | 37 |
| Heat recovery rate max [%] | |
| 95 | 95 |
| Constant Flow | |
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| Standard Bypass | |
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| Built-in preheater | |
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| Connection provisions for external preheater | |
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| Connection provisions for humidity sensor | |
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| Connection provisions for 2-zone demand flow | |
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| Connection for timer | |
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| Version PLUS | |
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