Advanced Materials Research Vol. 649

Abstract: Retroreflection of infrared radiation can be used to suppress the losses of thermal radiation. This can mitigate uncomfortable feeling of cold in unheated environments as well as suppress loss of heat in technological processes where standard insulations can be hardly applied. Shortly it handles about a process opposite to heat accumulation, needed in case of PCM panels inside building. The paper presents a concept of evaluation of retroreflection with the help of computer simulations in RADIANCE.

Abstract: The article describes a model of a real solar system created in the Trnsys simulation tool. 2011 data were used as the input data (solar radiation, exterior temperature, heat consumption). The output data from the computed model were compared to the values recorded by a monitoring system.

Abstract: Decreasing heat load of buildings and their cooling is a major problem affecting the quality of both inner environment and air-conditioning system's energy demands. One of the alternatives using regular components of a standard air-conditioning unit is indirect adiabatic cooling. By means of a customized calculation procedure, this article demonstrates performance possibilities, energy savings and the economic benefits of indirect adiabatic cooling connected with a heat recovery heat exchanger on two air-conditioning unit alternatives.