PV roof on a low energy office in the UK.

            

Evaluation of a distributed parameter model for counterflow heat exchangers.

The paper deals with simulation of the heat exchanger and model evaluation. There are presented partial differential equations of heat exchanger model, which assume liquid mediums. Presented, in the paper, model is used as an approximation for three different type heat exchangers. The purpose of these investigations was to explain weather the same model could match well to different of shape and type exchangers by adjusting some model parameters. There is shown a method of determining model parameters. Results of simulation are compared with measured data.

Exemplary retrofitting of an old school building in Stuttgart (EROS).

By the EROS Project the potentials of a retrofitting process for a typical school building in West-Germany were to be demonstrated from an energetic point of view. Combining the renewal of the space heating system with the reconstruction of the building envelope yields synergetic effects. The project aims at minimizing the future energy consumption and optimizing the economy of the retrofitting at the same time. Thus, both operating costs and emissions are reduced.

Trends for retrofit of VAC systems in hospitals - Polish case study.

Political and economical changes that have been started in Poland since 1989 strongly influenced the building construction market. New owners or managers of institutional buildings have begun the process of retrofitting, focusing on:

Indoor air quality criteria.

             

Dental ventilation: theory and applications.

               

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