Untitled - Air Star AB

Better savings on energy with Air Star!
Air Star ventilation recovers on average 85 % of the heat energy in exhaust air. In a residence of 125 m 2
you can reduce your energy consumption by over 6,000 kwh/year* by installing Air Star!
As part of the natural ventilation process, the air is sucked from the
house by the thermal force that is created when warm air meets
cold air. The warm air, which is lighter in weight, rises and is transported
through the exhaust piping. The efficiency of the system
is affected by differences in temperature between the indoor and
outdoor air. This leads to better efficiency during winter time,
when the outdoor temperature is low. In older residences it is
common to have the ventilation exhaust pipe mounted around
the smoke pipe. The smoke pipe works as an engine and heats the
exhaust air, which results in a more efficient natural ventilation
system. Nowadays it is common to change from a wood stove to
a more modern solution for residential heating, such as a district
heating network. This renewal creates another problem. The natural
ventilation is highly reduced, as the smoke pipe is not in use.
Exhust air
This diagram shows two Swedish cities, Malmö and Kiruna.
In Kiruna, in northern Sweden the savings reach about
7,750 kwh per year and in Malmö 4,874 kwh per year compared
to natural ventilation. If you have mechanical ventilation
you will save even more, while the savings will not be as
much if there is ventilation with a central heat exchanger unit
with ducts.
Air Star, however, will always be a good financial solution
when it comes to ventilation.
Supply air
Mechanical exhaust ventilation
Indoor temperature
20 0 C
Supply air
Energy consumption for ventilation
Natural ventilation (S)
Indoor temperature
20 0 C
This is S-ventilation, the most common type in houses in Sweden today.
S-ventilation: 125 x 53 kwh/year = 6,625 kwh/year
Air Star: 125 x 9 kwh/year = 1,125 kwh/year
Savings with Air Star: 5 5000 kwh/year*
The dashed line in the diagram indicates that energy consumption from
ventilation in smaller residences of 125 m 2 around Stockholm is as follows:
The calculation assumes a fully functional ventilation system according
to the Swedish standard set by Boverket, The Swedish National Board of
Housing, Building and Planning.
110
kWh/year, m 2
100
90
F-ventilation
80
70
60
50
40
30
20
10
0
S-ventilation
AIR STAR
-2 -1 0 1 2 3 4 5 6 7 8 9 10
Yearly mean temperature
Exhaust ventilation (F)
This is F-ventilation, where a fan extracts the exhaust air.
F-ventilation: 125 x 67 kwh/year = 8,375 kwh/year
Air Star: 125 x 9 kwh/year = 1,125 kwh/year
Savings with Air Star: 7,250 kwh/year*
* The calculation assumes that both comparing objects have fully functional ventilation
according to the Swedish standard set by Boverket, The Swedish National Board
of Housing, Building and Planning
Yearly mean temperature:
Stockholm +6,6 • Edinburgh +8,5 •
Moscow +5,0 • Groningen +8,6 •
Berlin +8,9 • Maastricht +13,3 •
Vienna +9,9 • Paris +10,6 •
London +9,6 • Madrid +14,3 •
1
LA10 correspond to a sound absorber in bedroom
2
LA20 correspond to a sound absorber in a living room
The heat exchanger recovers,
on average, 85 % of the heat
from the exhaust air.
TECHNICAL FACTS
Product: COMFORT 20 COMFORT 30
Air flow: 4,44- 8,89 l/s 5,56-13,33 l/s
16-32 m 3 /h 20-48 m 3 /h
Energy efficiency: on average, 85 %
Rated power: 830 W
Mains connection: 230-240V
Fans
(run alternately): 10-30 W
Heating element: 0-800 W, runs only during supply air phase when necessary
Noise level:
Comfort 20: LA 10 1 : 29-40 dB (A) • LA 20 2 : 26-37 dB (A)
Comfort 30: LA 10 1 :
32-43 dB (A) • LA 20 2 : 29-40 dB (A)
Unit casing: 1 mm aluminium-zinc
Cassette: W: 290 H: 340 D: 204 mm (exterior dimensions)
Door:
15-50 mm
Wall bushing: 100 mm diameter
Warranty: 5 years for private use, 2 years for businesses/professional users
Quality assurance: Air Star is S-marked (approved by the Swedish electrical
authorities), CE-marked and European Patented
For technical data on other products, visit our website: www.airstar.se.