Operation
By investing in VTS products You receive exceptionally economical devices. Due to the applied solutions VENTUS air handling units above all signify energy saving.
Money out of thin air 
Our VENTUS air handling units are equipped with advanced energy recovery systems which guarantee reduction of the costs connected with air heating and cooling of rooms inside buildings. In order to achieve optimal adjustment of the energy recovery function we offer a wide range of exchangers with high indexes of energy recovery efficiency.
- Types of recovery: rotary exchanger, cross-flow exchanger, glycol exchanger
- Efficiency up to 85%
- Separation of supply and exhaust air flow
- Sensible and latent heat recovery
The example below demonstrates potential savings on operation of our AHU with energy recovery system (rotary exchanger).
| Costs of investment | AHU with recovery | AHU without recovery | ||
| Purchase of an AHU |
16 130 |
11 320 | ||
| Purchase of a cooling unit |
5 830 |
14 630 | ||
| Purchase of a water heater |
5 320 |
8 880 | ||
| Total value |
27 280 |
34 830 | ||
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| Monthly costs of maintenance for the option with air heating |
3 928 |
6 022 | ||
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| Monthly costs of maintenance for the option with air cooling |
2 426 |
3 860 | ||
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Energy under control 
The implemented technical solutions and new concepts of products applied in VENTUS AHUs enabled significant reduction of energy losses.
Due to 'non-skeleton' casing and labyrinth system of blocks connection the number of thermal bridges and air leakages has been reduced. Introducing 16 AHU sizes available in the typeline guarantees optimal adjustment of an AHU's size to its efficiency. A 'plug' fan with a frequency converter is offered as a standard which enables smooth regulation of an AHU's efficiency. The optimum air flow speed has been reduced to 2.6m/s which results in a significant reduction of energy consumption related to the operation of a fan set.
The following example demonstrates potential monthly energy savings resulting from optimum air flow speed of 2.6m/s in VENTUS AHUs.
| Type of unit |
High air flow speed AHU |
Optimum air flow speed VENTUS AHU | ||
| AHU operation per year [h] | 6 000 | |||
| Average price of 1 kWh of electric energy [EUR] | ~ 0,10 | |||
| Linear air flow speed [m/s] |
3,3 |
2,6 | ||
| Supply fan's consumption of electric power [kW] |
7,24 |
4,33 | ||
| Exhaust fan's consumption of electric power [kW] |
5,79 |
3,94 | ||
| SFP index [W/m3/h] |
0,87 |
0,55 | ||
| Electric energy consumption per year [kWh] |
78 204 |
49 662 | ||
| Costs of electric energy consumption per year [EUR] |
7 820 |
4 966 | ||
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| Average period of operation [years] |
15 | |||
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