Sandro Nizetic

An Alternative Energy Concept: A Solar Power Plant with a Short Diffuser

This paper elaborates an alternative energy concept involving a solar power plant with a short diffuser. The main physical part of the proposed alternative energy source is a gravitational vortex (convective vortices) that can be thought of as a heat engine. A solar power plant with a short diffuser could produce electricity without carbon dioxide emissions by transforming the available solar energy into useful mechanical shaft work. The proposed concept is similar to the solar chimney power plant concept, but without a chimney of limited height; in that sense, the design is closer to the atmospheric vortex engine concept. Specific details about the proposed alternative solution, previous research outcomes and planned future research work will be discussed in this paper.

Integrated Split Heat Pump System for Building Applications

In this paper, a design of a specific hybrid energy system is elaborated for small scale applications in building facilities of residential or commercial purpose. The energy system is assembled from existing market available technologies that include implementation of a heat pump technology, photovoltaic system and of a standard accumulation boiler for the preparation of hot water. The developed energy system is assumed to be used in mild climates where a heat pump system can be efficiently used throughout the year. According to the gained experimental results the coefficient of the performance for the cooling mode can be expected between 5.0 and 6.0, which prove that the proposed system is highly energy efficient. The developed energy system can cover both cooling and heating demands and also demands for domestic hot water and it represents a totally renewable energy system.