HINDAIR
For Total Air Climate Solution

Indoor air quality, EN 13779As

During the last 200 years, mankind has begun to significantly alter the composition of the atmosphere through pollution. Mankind, through its pollution, has increased the levels of many trace gases. Some of these trace gases, present in elevated concentrations, can be harmful to both humans and the environment.

Air pollution can result in poor IAQ , both in cities and the countryside. Some air pollutants make people sick, causing breathing problems and increasing the likelihood of cancer.

The European Standard EN 13779: 2007 is a useful tool for choosing the filter quality you should use in the ventilation system.

Simply put, the indoor air quality divides into four categories and outdoor air quality in three different categories.

Indoor Air Quality (IDA) is categorized as very good (IDA 1), good (IDA 2), OK (IDA 3), or bad (IDA 4).Outdoor Air Quality (ODA) is categorized as pure (ODA 1), contaminated (ODA 2), or highly contaminated (ODA 3).

For the first four categories, IDA classes, measurement of CO2 levels can help define "good" and "poor" air quality. For the ODA categories, concentration measurements of different gases are a tool used to separate the classes.

ODA 1 is often rural areas , with no special sources of pollution. Smaller cities are often in ODA 2 , and larger cities / center cores are often categorized in ODA 3 .

As shown below, for example, in a highly contaminated area (ODA 3), choose a multi-stage solution with both F7, Carbon filter and F9

Recommendations in EN 13779 for air filters

FAN WALL TECHNOLOGY

New way to intelligent central air conditioning is called FAN WALL. In this modern technology, several (usually at least four) small fan units are connected in parallel in one housing instead of using one large fan. This arrangement has considerable advantages. On the one hand, the modular principle increases flexibility. Depending on the installation requirements, the number and size of fans can be selected optimally. On the other hand, it improves the air flow distribution: The result is a better heat transmission and filter utilisation in the central air conditioning unit.

Operational reliability: No total failure in case of malfunction Using several small fans in place of one large fan improves depending on the installation requirements: In the event of a malfunctioning fan there is no total system failure and not even a drop in performance because, with the appropriate design, the speed of the other fans can be increased to compensate the non-operational fan.

Advantages of Fan wall: That added plus
+ More operational reliability
+ More performance
+ More costs saved
+ More installation flexibility
+ More energy saved
+ More maintenance friendliness
+ the only less: Weight and space requirement!

Ultraviolet Light Options
Air handlers can be factory equipped with ultraviolet (UV) light options that are pre-engineered for placement to provide maximum effectiveness. Two UV light options are available. The first can be mounted on the downstream side of all cooling coils and above the unit drain pan for surface “kill” applications to comply with the GSA Facilities The second can be mounted in the air stream prior to filter(s) for “kill on the fly” applications.

Ultraviolet (UV) systems prevent all these microbiological problems. UV rays allow air sterilization. It eliminates 99.9% of air borne micro-organisms. It prevents air borne transmission of contagious diseases.

COMPOSITE MATERIAL FAN FOR HEALTHY AIR The new high-performance composite material extremely stable, non- corroding, colour-stable, and is 100% recyclable.Extremely light, extremely stable, extremely durable, extremely quiet and extremely efficient The new high-performance centrifugal impeller, the to all challenges – be they high operational temperatures, or special requirements in clean room or other air-conditioning applications. The high-performance composite material developed using the latest insights, makes the impeller significantly lighter than those made of steel - and offers superior mechanical properties. It opportunities for system runtimes, enables lower power consumption and leads to a drastic reduction in noise.

EC (Electronically Commutated) Motor Fans Depending on global and nationwide research, the highest potential whereby electrical energy saving can be achieved has to do with electrical motors. The leading factor in implementing this responsibility is EC technology with the high energy economy it provides.

The (smart plug-and-play) product equipped with an EC motors, details distinguishing it from other products on the market, advantages for the manufacturer and end user: Process controller, speed control device or driver, electrical filters and overload protection (for motor and electronics) elements are all within the motor.

Low noise and vibration levels are achieved throughout the entire operational range.

100% speed control is available without using additional components.

The unit can operate with 0-10 VDC or 4-20 mA set and actual signals. Wide diameter and performance range (Up to 630 mm in diameter - 6kW in motor power). Pressures as high as 2200 Pa can be accommodated with EC motor powers. Fixed performance throughout the full supply current range = 3 phase - 380-480 VAC - 50/60 Hz – Integrated DC supply source for sensors- Soft start -Ability to rotate at low speed on standby upon demand (adjustable minimum offset speed)

European Standard EN 1822:2009As

The standard is applied to high and very high efficiency air filters with ultra-low penetration (EPA, HEPA and ULPA) used in the field of ventilation and air-conditioning, as well as in technological processes such as clean-room technology or the pharmaceutical industry.

It establishes a procedure to determine efficiency based on a method that counts particles with a test liquid aerosol (or alternatively a solid one) and can classify these filters in a normalized way depending on their efficiency..

All HEPA / ULPA filters produced by Hindiar are supplied fully in accordance with the EN 1822

At Hindair we test all HEPA filters . Each filter has unique serial number and has a detachable filter label which can be used to record the position of the individual filters in your installation. It can also be used as part of the validation process .

In short it means:
•Individually certified filters
•Tested using MPPS (Most Penetrating Particle Size) challenge.
•Detailed, standardized test procedures.
•Full traceability of materials and test data.

Filter Media Efficiency Testing

As Per Hindair standard vendor policy suppliers are required to test each master roll of Hindair filtration media for efficiency. Test results are submitted to Hindair for review & material acceptance prior to release authorization.

Test Protocols for HEPA filters followed at Hindair

Leak Scanning
At Hindair leak tests is done on each HEPA/ ULPA filter. Testing is performed in cleanroom. All testing is conducted per the controlled and documented procedures of Hindair’s quality system.

EN 779:2012

This European standard is purposed to classify air filters based on their lowest filtration efficiency also referred to as minimum efficiency (ME).

With the introduction of the minimum efficiency (ME) a value is introduced which guarantees the real life performance under all conditions, provided the filter is not damaged and used at the agreed airflow rate.

The additional requirement will disqualify inferior media, which only depends on electrostatic charges and will enforce the use of quality media for fine filter filtration and IAQ. The consequence of reported low discharge values for the efficiency may result in disqualification of the filter for classification as additional requirements for minimum efficiency are added

Comparison Chart ASHRAE 52.2, ISO16890, EN779, EN1882

EN ISO 16890 :2016

The new EN 16890 standard, which supersedes the globally known EN 779 & ASHRAE 52.2:2012

What does EN ISO 16890 do?

Similar to EN779:2012, the EN ISO 16890 testing method of filters also considers the percentage of dust collected in a filter in order to classify the filter.

For coarse filters, the filter effect is evaluated by measuring the initial gravimetric arrestance . For fine filters, the fractional efficiency is measured in the range of 0.3 to 10-micron particle diameter.

This measurement is performed on a new filter and on the same filter after discharging. The initial gravimetric arrestance and the three efficiency values PM1, PM2,5 and PM10 as well as the minimum efficiency values PM1, min and PM2,5, min are used to classify a filter in one of the four groups. Filters with initial efficiency and discharged efficiency below 50% automatically drop to the inferior group