Wytwórnia Elementów Kominowych TARNAWA Spółka Jawna
L.Wajda, W.Wajda, R.Nazimek
ul. Giełdowa 22, 33-100 Tarnow, Poland
TARNAWA offers protective and ventilation grates. Basic material for grates production is steel. Grates can be powder coated, offered colors are: white, gold, silver or copper.
We also produce grates from zinc coated and stainless steel sheets in two versions – with and without shutter. The design of grates enables quick assembly and disassembly (for cleaning) as only the frame of the grate is attached to the opening.
Grates are used as:
- aesthetic covers for warm air chimney outlets;
- aesthetic covers for outlets from lines distributing warm air;
- aesthetic covers for ventilation lines;
- aesthetic covers for side chimney outlets as they are resistant to changing weather conditions;
- aesthetic covers for air outlets in air vents.
According to the norm Pn-83/B-0340 ventilation systems in buildings should ensure air supply from outside to the rooms, kitchen, bathroom as well as exhaust of fumes. Natural, gravitational ventilation depends on outer and inner temperature difference and on air movement (wind). It often fails in summer when inner and outer temperatures are on the same level and that can lead to the disappearance of chimney draught. In winter it is necessary to take fumes out to the chimney conduit (ventilation conduit).
Air ventilation for boiler-room should be designed to ensure proper amount of air needed for fuel combustion The approximate amount for a gas furnace is 1.6 m³/h of air for 1kw of furnace’s capacity. In dwelling houses fresh air should be delivered as stated in the norm Pn-83/B-0340 and showed below:
| Room | Air volume stream m³/h | Remarks |
| Dwelling houses | ||
| Kitchen with a window | - | |
| – a gas or coal cooker | 70 | |
| – an electric cooker for 1 or 2 persons | 30 | |
| – an electric cooker for 3 persons | 50 | |
| Kitchen without window | - | |
| – with electric cooker | 50 | |
| Bathroom | 50 | |
| Toilet | 30 | |
| Utility room without window | 15 | |
| Rooms, bedrooms | 20 | per person |
| Group dwelling buildings (hotels, dormitories etc.) | ||
| Common room, dining-room | 20 | per person, min. one change per hour |
| Rooms, bedrooms | 20 | per person |
| Toilets | ||
| – single | 40 | |
| – collective | 50 | 25 m³/h urinal |
| Showers – single | 30 | Collective, min 5 changes per hour |
| Smoking | 35 | Per person, min 10 changes per hour |
| Public utility buildings | ||
| Rooms for permanent and temporary stay for people | ||
| – no permit for smoking | 20 | per person |
| – permit for smoking | 30 | per person |
| Nursery, kindergarten | 15 | per person |
Implemented Quality Management System ITB/-023/S fulfilling the quality norms of ISO 9001 ensures that ventilation and protective grates produced in TARNAWA meet all the requirements of the norm. All the raw materials, paints and components used to produce the grates are attested which allows us to mark our products with CE sign.