Nearly Zero Energy Building will be a mandatory status for all new buildings constructed after 31st December 2020 European member states. This implies that, beside energy efficiency at the level of Low Buildings, systems based on renewable sources must implemented to provide savings and environmental benefits space conditioning water heating. Focusing solar heating cooling renewable-based systems, paper presents an analysis aiming identifying optimal mix reach by evaluating comparing...

The energy output of solar-thermal systems using flat plate collectors can be improved by tracking. Tracking is well known as a path for increasing the amount solar radiation received collector; additionally paper proposes new concept that considers inverse tracking viable option protecting against overheating. An analysis thermal and conversion efficiency done considering forward in three different days with profile (cloudy, sunny mixed days), followed an concept. in-field data show there...

A total of five different types photovoltaic (PV) modules were comparatively analyzed in terms electrical output, efficiency, and relative efficiency losses, based on infield data collected a temperate mountain climate, to outline the influence high environmental humidity PV conversion during time intervals with clear sky low amounts incident solar irradiance. The mono- poly-crystalline silicon, cadmium telluride (CdTe), copper indium selenium (CIS), gallium selenide (CIGS) mounted fixed...

This review study, framed in the Work group 4 “Photovoltaic built environment” within COST Action PEARL PV, CA16235, aims to examine applications of integrated and applied photovoltaic technologies on ten landmark buildings characterised by distinctive geometries, highlighting aesthetics their architecture quality PV integration based a proposed set seven criteria. The selected building samples cover large design diversity related systems into envelope that could serve as basis for general...

This article presents a mathematical model for estimating the direction of maximal global solar irradiance (MGSI) based on actual values direct/beam and diffuse irradiance, that can be used to determine correct value collecting efficiency tracking systems. Using this model, improved by conversion surface minimize its incidence angle with instead beam irradiance. The analysis numerical results obtained using in-field data-based simulations showed significant improvement real efficiency,...

Energy mix used in "Solar House" is currently composed of about 50% renewable energy sources (geothermal energy) and conventional (mainly electricity from national grid less than 10% natural gas).The geothermal extracted by the mean a ground coupled heat pump which assures heating load preparation domestic hot water.The peak period covered gas boiler to drive for lighting system taken grid.Energetic autonomy Nearly Zero Status can be achieved if significant part replaced with nonconventional...

A solution to increase the electrical output of photovoltaic systems relies on solar tracking mechanisms that amount received energy. The experimental results obtained during a monitoring period one year are comparatively presented in paper for five types modules installed fixed platform (as reference) and dual-axis Renewable Energy Systems Recycling R&D Centre Transilvania University Brasov, Romania. influence solar-tracking mechanism meteorological conditions specific four seasons...

A first aim of this paper is to present the comparative tracking efficiency analysis bi-axial and mono-axial pseudo-equatorial systems for small photovoltaic (PV) platforms, implemented in Toronto, Canada (434259 lat.N).For reasons some results were also simulated considering another location situated approximately at same latitudinal level: Braşov, Romania (45 40' lat.N).In order fulfill aim, firstly different aspects are presented regarding solar radiation, angles incidence between...

One key component of the energy demand in built environment is thermal required for domestic hot water preparation.Currently, fossil fuels are mostly used to meet environment, lately, solar systems have been increasingly implemented, mainly preparation, enhancing building's sustainability.A case study presented paper a system with six flat plateand three evacuated tube collectors installed on rooftop Renewable Energy Systems and Recycling Research Centre, Colina Campus Transilvania...

The purpose of the current paper is to present and analyze energetic results obtained from a stand-alone photovoltaic system, consisting two differently orientated PV modules, over period one year functioning. One modules being pseudo-equatorially oriented along axes based on an annual orientation program which will be described in paper. second module installed fixed optimally tilted frame towards South. also describes electrical monitoring system used for measuring parameters energy...

Increasing the solar energy conversion into electrical or thermal represents an European and national priority, because it offers clean alternatives to use of fossil fuels, in no pollutant systems, based on photovoltaic modules collectors.The global radiation is most important factor affecting amount produced by a PV module.In direct connection with change conversion, T R -Loss Coefficient (Trübungsfaktor) considered.The paper presents methodology for calculating Braşov site, method proposed...

Turbidity factor (T R ) varies from one geographic area to another according the specific in-field conditions: site altitude, atmospheric pollution, water vapor and gasses in air etc. Therefore turbidity is a synthetic parameter that offers information on how much solar radiation lost when passing through cloudless atmosphere moreover it can be used evaluate pollution given site.To obtain realistic accurate T estimation for Brasov, Romania, beam values, registered by Delta-T meteorological...

Romania introduced in 2018 an amendment to the national law 220/2008 by including Prosumer concept that allows investors grid-connected photovoltaic systems with a capacity up 27 kWp receive feed tariff for electricity delivered grid representing approximatively one third of price paid when is consumed from grid. Thus, challenge use as much possible power it produced. A methodology developed evaluate how electrical energy output platform used geothermal heat pump space heating building....

This paper proposes an optimized tracking algorithm for increasing the electrical response obtained when using a pseudo-equatorial dual-axis mechanism individual photovoltaic modules. The presents analysis of daily and seasonal movements their influence on efficiency increase. main steps are presented, describing annual optimal orientation program tracked PV module, considering specific implementation location in Brasov, Romania. Based proposed system algorithm, energetic is analyzed,...