Printable electrified air filter

The aim of the project is to develop a commercial prototype of a printable electrified air filter.

The air we breathe exposes us to a growing number of airborne contaminants, including particulate matter invisible to the eye, as a result of ever-growing traffic volumes and ever-higher levels of energy generation. The effect of high particle concentrations on human health and comfort has been studied for many years. These studies have shown that there is a clear connection between high sickness and mortality rates and the levels and sizes of particles that people breathe on a daily basis. The Clean Air for Europe (CAFE) programme ( has estimated that fine particles in ambient air in 2000 were responsible for seriously aggravating the condition of a large number of people with cardiac and pulmonary diseases, resulting in the premature death of nearly 350,000 people. Long-term exposure to fine particles was estimated to have reduced the life expectancy of these people by as much as 10 years. The particle concentration and size distribution of indoor air depend significantly on outdoor air quality. Particles transfer from outdoor to indoor air mainly by leaks through the building envelope and via the ventilation system. The degree to which people are exposed, and the amount of particulate matter that finds its way into our lungs, are also linked to how particles enter the interiors of buildings. Actions to decrease fine particle concentration in indoor air should be focused on the occupied zone when the aim is to reduce the exposure of occupants. Efficient filtration of supply air is one of the major tools for improving indoor air quality. In the past, air filters were primarily used for protecting ventilation systems against particulate contamination. The growing awareness of the adverse health effects of airborne particles has shifted the role of air filtration towards protecting people. This will increase the need for higher efficiency filtration. Also lower operating costs will become a growing priority. In general the most important properties of air filters are low pressure drop, high efficiency, high dust holding capacity, and low energy consumption. It is extremely difficult to achieve all these properties at the same time. One commonly used method to achieve high filtration efficiency at low pressure drop is to utilise electrical forces in air cleaning. An electrified air filter is an ideal candidate for removing sub-micron particles in ventilation systems. Compared to a conventional fibrous filter, an electrified filter has a much higher efficiency and significantly lower pressure drop at the same level of particle loading. There are still several open questions to be solved before commercialisation of the ELFIL technology. All the results must be transferred from laboratory to an industrial scale. For example, the behaviour of an electrified fibrous filter in real operation conditions (humidity, collected particles) should be further investigated to improve the reliability of the new technology. The aim of the project is to develop a commercial prototype of a printable electrified air filter. The project will be divided into two national subprojects, which are combined together with a EUREKA network. The project consists of seven work packages. WP1 consists of research work at VTT. WP2-WP6 are focused on product development work in the companies. WP7 consists of reporting and information transfer between all project participants.
Project ID: 
4 471
Start date: 
Project Duration: 
Project costs: 
860 000.00€
Technological Area: 
Air Pollution
Market Area: 
Air filters and air purification and monitoring equipment

Raising the productivity and competitiveness of European businesses through technology. Boosting national economies on the international market, and strengthening the basis for sustainable prosperity and employment.