Test systems - Import export

With the purge air method, heat recovery for balanced air mass flows can be determined for alternating, decentralised ventilation units. The uncertainties of the direct measuring method used so far due to inhomogeneous velocity and temperature profiles at the outlet of the ventilation units are circumvented by the scavenging air method and the measuring accuracy is higher. With the optional humidity conditioning the moisture recovery can also be determined. Further thermal performance indicators are the air volume flow in alternating operation and the balance, which can also be determined with the test bench. The test stand is equipped with an auxiliary fan so that continuously operating ventilation units can also be measured with the direct measuring method.

With our HPT heat pump test bench you can simulate humidity as well as temperature. The test stand is used for functional testing of air-to-water heat pumps according to DIN EN 14511. Current test systems on the market, which are used to test e.g. air-to-water heat pumps, are climatic chambers with a cooling, heating and humidification unit fixed to the roof. The disadvantage of this concept is that it is not possible to set a homogeneous temperature and humidity distribution in the cube-shaped room. Based on test engineering concepts in the automotive industry, EP-E developed a concept in which the air flows in a closed loop (loop design). The HPT heat pump test stand is a closed-loop test stand for functional testing of air-to-water heat pumps according to DIN EN 14511. The advantageous closed-loop design uses an insulated chamber with conditioning units for temperature and humidity outside the chamber.