In order to face the growing energy demands, renewable sources can provide an alternative fossil fuels. Thus, low‐enthalpy geothermal plants may play a fundamental role in those areas—such as Province of Viterbo—where shallow groundwater basins occur and conventional cannot be developed. This lead being fuelled by locally available sources. The aim present paper is exploit heat coming from system. experimental plant consists down‐hole exchanger for civil purposes supply thermal needs...

The thermal performance of building plays a fundamental role in energy consumption since large amount is needed to balance heat transfers occurring through the envelope itself. aim present paper simulate transfer affecting specific considering two different scenarios: current situation and future improvements by replacing transparent enclosures adding an exterior insulation thicknesses. In order identify most convenient suitable solution focus attention on compelling action, economical...

In this paper the influence of heat transfer in industrial human hair depigmentation is studied together with some suitable solutions for optimizing process and efficient energy use. particular, analysis was conducted by implementing current proposed Comsol Multiphysics. The fiber's damage loss are mainly due to a non-isothermal uncontrolled process. order implement an use reduce we propose modification tank, where occurs, from rectangular octagonal-shape configuration, characterized...

The use of renewable energy is becoming increasingly necessary in order to address the global warming problem and, as a consequence, has become an high priority for many countries. Biomass clean and source with growing potential replace conventional fossil fuels. Among biomass, residual waste ones represent great resource generation since they permit both eliminate possible produce energy. In present work, case slaughterhouse wastes (SHWs) been investigated. Anaerobic digestion nowadays...

Biomass is increasingly used for energy generation since it represents a useful alternative to fossil fuel in order face the pollutions and global warming problem. It can be exploited heating purposes supplying domestic hot water. The most common applications encompass wood pellet boilers. economic aspect becoming an important issue achieve ambitious targets set by European Directives on Renewable Sources. Thus, present paper deals with feasibility of biomass boiler plants specific regard...

In this work, an optimization protocol for a small-scale biomass plant and Stirling engine direct coupling is presented. The gas produced by the combustion directly piped to heater head whose performance investigated with regard following aspects: operating conditions, heat fluxes temperatures type of biomass. Moreover, system successfully modeled means based on Boubaker Polynomial Expansion Scheme (BPES). results show that moderate speed values (≈200-400 rpm) lead optimize process. As...

The building thermal performance plays a fundamental role in reducing the national energy consumption, especially considering that majority of existing structures were built before efficiency was concern at all. paper presents case study School State Forestry Corp Sabaudia (Italy). aim is to simulate behaviour both stationary and dynamic conditions, identify most appropriate action improve efficiency, ensuring occupants' comfort during year. results clearly show considerable thicknesses...

The use of renewable energy is becoming increasingly necessary in order to address the global warming problem and, as a consequence, has become an high priority for many countries. Biomass clean and source with growing potential replace conventional fossil fuels. Among biomass, residual waste ones represent great resource generation since they permit both eliminate possible produce energy. In present work, case slaughterhouse wastes (SHWs) been investigated. Anaerobic digestion nowadays...

Since fossil fuels shortages are predicted for the forthcoming generations, use of renewable energy sources is playing a key role and strongly recommended worldwide by national international regulations.In this scenario, solar collectors hot water preparation, space heating cooling becoming an increasingly interesting alternative, especially in building sector because population growth.Thus, present paper addressed to numerically investigate thermal behaviour prototypal evacuated tube...

According to many recent European and National Directives, ambitious targets are increasingly set so as ensure a clean sustainable future for the forthcoming generations. In order change from being predominantly fossil fuelled by locally available sources, low-enthalpy geothermal installations heating cooling buildings can be successfully used, such Down-hole Heat Exchangers (DHEs). Although in last decades DHEs have been studied extensively, both numerically experimentally, some aspects...

The effluents deriving from agricultural industries are sources of wastewater sensibly different common civil treatment plants effluents, because they characterized by significant amounts nutrients and organic load. Agricultural require considerable water volumes for processing the farm products, in doing so generating huge wastewater, with high concentration chemical oxygen demand (COD), nitrogen (N) phosphorus (P). Advanced low cost techniques depuration required such circumstances, as use...

In dry regions, water resources have become increasingly limited, and the use of alternative sources is considered one main strategies in sustainable management. A highly viable to commonly used treated municipal wastewater, which could strongly benefit from advanced low-cost techniques for depuration, such as integrated system phytodepuration (ISP). The current manuscript investigates four Italian case studies with different sizes characteristics. raw wastewaters final effluents were...

In this study, wind energy potential and perspectives in the eastern North Africa region (Tunisia) have been investigated terms of connectivity to projected Czisch European HVDC super grid. A simplified extracted scheme grid has used as a guide optimize transportation efficiency through whole net. Wind, an available easily exploitable renewable was showing promising future for 2025 horizon context connected net with Union, despite local sub-grids disparities. This is also emphasis technology...

A net rainfall estimation procedure, referred to as Curve-Number For Green-Ampt (CN4GA), combining the Soil Conservation Service - Curve Number (SCS-CN) method and Green Ampt (GA) infiltration equation was recently developed, aiming distribute at subdaily time resolution information provided by SCS-CN method. The initial abstraction total volume of are used identify ponding quantify hydraulic conductivity parameter GA equation, whereas model distributes excess In this study we evaluate...

In this work the amount of biomass available from hazelnut pruning in province Viterbo Italy was investigated as a guide to valorizing same potentials similar region Turkey. At present, pruning’s residues are generally destroyed and burnt heat source throughout Turkey by farmers directly field. end pruning, way, large quantity is lost. The obtained hence an important that could be used for thermal energy production. aim actual give evidence relating feasibility availability estimated...