DEVELOPMENT OF VARIOUS LOW-EX SYSTEM COMPONENTS AND THEIR INTEGRATION

The present paper deals with modeling of various low-exergy system components and their integrationinto the energy system for buildings and small communities. The exergy content of a certain amount ofenergy is defined as the part of this energy that can be used to produce mechanical energy. The qualityof a certain amount of energy is defined as the relative exergy content of this energy. Most of ourbuildings with their heating and cooling systems today are built for conversion of high quality energysources to low quality use with a huge destruction of the available exergy as a result.

Experimental study on unsteady air terminal

This paper describes the unsteady terminal and presents its characteristics gained fromexperiment. The experimental results showed that the fan-coil unit tested in the experimentwas able to provide fluctuating airflow and the velocity curve of supply airflow wasconsistent with the control signal very well. The spectrum of supply airflow is similar to thespectrum of natural wind if the control signal simulating natural wind provided. The supplyair temperature is changed when the airflow is changed.