Very little experimental data exist validating the influence of temperature, ventilation rate, air velocity, humidity and adsorbed pollutants from other sources on emission rates from construction products. Experiments were performed using small scale climate chambers including the new CLIMPAQ quantifying emissions from test specimens of linoleum, acrylic paint, nylon carpet, and sealant. A trained sensory panel voted on the decipol scale and chemical analysis identified and quantified the major pollutants after the specimens had been conditioned in the chambers for six days.
Total energy exchangers with a rotating heat storing matrix have been applied to air conditioning systems for more than 25 years with very good results for saving both heating and cooling energy. The efficiency of the hygroscopic coating of the rotors is very important to recover the latent energy, but there is the risk of cross contamination. To prevent odour transfer, the mechanism of the sorption and desorption process has to be investigated in detail.