TERMOCENT

We only carry out inspections of electrical installations in industrial and large-scale facilities. This is due to the fact that temperature anomalies in electrical installations are visible in the thermovision image only when the system is heavily loaded. In normal dwellings, the load on the system is much lower and does not cause the visible components to heat up to such an extent as to reveal faults, in addition, the wiring is routed in the walls/roofs making it impossible to inspect.

The test consists of checking the tightness of partitions and their connections – windows, walls, doors, roof. Air exchange through ventilation ducts or chimneys is natural and desirable, so we do not take it into account – for the duration of the test we seal all openings of this type. Once the building is ready, a supply door is installed in the external door – a frame of up to 100 cm x 200 cm with a fan supplying or extracting air from the building. We aim for a pressure difference of 50 Pa between the outside and inside air. Under these conditions, we calculate how much air will be extracted through the leaks in a unit of an hour. The fan causes air movement that can blow ash and dust into the flat, so it should be removed beforehand if possible.

An Energy Performance Certificate is often colloquially referred to as an energy certificate. It is a document describing the energy demand of a building in relation to its area. It is currently required for buildings intended for sale and rent. The document can only be made by a person entered in the register of authorised persons, kept by the Ministry of Infrastructure and Construction. The energy audit, in addition to the information contained in the energy performance certificate, contains information about the energy load of the building. In addition, it contains proposals for modernisation and the economic and technical parameters of this undertaking. It is performed in order to determine the savings after thermomodernisation. It is also necessary in order to obtain a thermomodernisation bonus for a project carried out under the Act of 21 November 2008 on supporting thermomodernisation and renovation and subsidies from other sources. It is sufficient to have a university degree in a relevant field to draw up an energy audit; no qualifications are required for the person carrying out the document.

Whenever possible, we carry out thermal imaging surveys from the inside. This is due to the greater accuracy of the measurement. Surveys carried out from the outside are exposed to changes in weather conditions outside (i.e. gusts of wind, slight snowfall, the influence of a cloudless sky and the warm shadow effect created). These phenomena can cause interference or prevent measurement altogether. Workmanship errors related to thermal insulation are not easy to pick up when surveying from the outside, and in most cases defects that can be detected from the inside are not visible at all from the outside (only 5% of defects are visible from the outside and 95% of defects are visible from the inside). Thermal imaging surveys from the outside are effective if an overpressure is created in the building (thanks to mechanical ventilation or a supply door). Warm air “pushed” outwards through leaks can then be seen from the outside and the survey is effective.

Mechanical ventilation refers to forced airflow. It is achieved by using one or more fans. Unlike gravity ventilation, mechanical ventilation is not dependent on the prevailing weather conditions.

Whenever possible, we carry out thermal imaging surveys from the inside. This is due to the greater accuracy of the measurement. Surveys carried out from the outside are exposed to changes in weather conditions outside (i.e. gusts of wind, slight snowfall, the influence of a cloudless sky and the warm shadow effect created). These phenomena can cause interference or prevent measurement altogether. Workmanship errors related to thermal insulation are not easy to pick up when surveying from the outside, and in most cases defects that can be detected from the inside are not visible at all from the outside (only 5% of defects are visible from the outside and 95% of defects are visible from the inside). Thermal imaging surveys from the outside are effective if an overpressure is created in the building (thanks to mechanical ventilation or a supply door). Warm air “pushed” outwards through leaks can then be seen from the outside and the survey is effective.