Sizing methodology for photovoltaic systems considering coupling of solar energy potential and the electric load: dynamic simulation and financial assessment

A reliable methodology for the dimensioning of photovoltaic systems is presented in this paper. This method generates technical-financial variables that aid in the choice of the most adequate photovoltaic power system for each project. The techniques that are usually used determine the size of PV power plants considering the monthly average of the solar energy potential of the month with the lowest solar radiation and the electricity to be supplied to satisfy the demand. These conventional techniques generate an uncertainty of at least 40 %, mainly due to the daily dispersion of the solar energy availability and of the electric load. The proposed methodology takes into account a region’s own photovoltaic energy potential and the detailed characteristics of the electric load, matching both with different PV power plants sizes, and analyzing the whole during a time period that guarantees the reliability of the results. The energy coupling is performed integrating the energy parameters (solar energy and electric load) in short time intervals (30 minutes maximum) to determine the supplied energy, the unsupplied energy demand and the unused solar energy. The daily integration of the three factors, using a dynamic simulation and performing a financial evaluation, allows for the identification of the most appropriate PV power plant size for every project. The results indicate that this methodology reduces the uncertainty of the solar power-electric load coupling from 40 % to 2.2 %, which allows a better definition of the financial variables that determine the most appropriate installed solar power for a photovoltaic project.Campus Arequip

Solar thermoelectric cooling technology applied to transport of vaccines in isolated communities

Solar thermoelectric cooling technology applied to transport ofA thermoelectric cooling system supplied by photovoltaic solar energy was built and evaluated with different thermal loads. The thermoelectric cooling module consumes 70 W, it is supplied by a photovoltaic system of 90 W and 40 Ah battery. The voltage and electrical current in each component (panels, battery, and electric charge) has been measured. The tests were performed with different thermal loads placed in glass containers used for vaccines. To analyze the cooling and preservation process, the experiments were started at room temperature. The results show that the thermoelectric cooling system works for small thermal loads, and it could be applied to transport vaccines in isolated areas where people carry medicines in small containers that do not maintain the temperature necessary for the conservation of vaccines. vaccines in isolated communities.Campus Arequip

Experimental study of a photovoltaic direct current water pumping system for irrigation in rural-isolated Region of Arequipa, Peru

In the present experimental study, a photovoltaic (PV)-powered system in continuous current (4 kW) for the pumping of water in an isolated, rural agricultural zone in Arequipa—Peru was analyzed. A meteorological station was installed in the studied zone, measuring solar radiation, temperature, relative humidity, and wind speed. The electrical and hydraulic parameters of the solar-pumping system (i.e., electric current, voltage, mass flow, and hydraulic pressure) were measured in order to evaluate the efficiency of the energy transformation processes. The results indicate that, during the year of 2017, the PV pumping system in direct current (DC) functions from 07 h 30 min to 15 h 30 min, during an average of 8 h a day. The PV array, hydraulic, and global efficiencies were evaluated. This allows for the interpretation of efficiency independent of solar irradiance. The efficiency of the PV array and global efficiency remained constant (11.5% f and 8.5%, respectively). The functioning interval of the PV array ranges from 880 W up to 3400 W, making evident the versatility of the system of generation and consumption in DC, which is able to function since solar irradiance is at least 200 W/m2, corresponding to 880 W of PV array power, 27 m of total dynamic head (TDH) and 2 kg/s of mass flow,and 70% hydraulic efficiency. With greater mass flows (6.3 kg/s), the PV array power was 3256 W with a hydraulic efficiency of 55%, a TDH of 30 m, and a peak solar irradiance of 1190 W/m2. When the whole system functions in DC, the efficiencies are superior to those of systems, which operate with DC/alternating current (AC) current invertersrevisión por paresCampus Arequip

Implementation of sensory stimulation technology in an interactive room for the diffusion of wine making activities

El presente proyecto de innovación intenta impulsar la promoción y difusión de las actividades de vinificación a través de la introducción de la tecnología de "estimulación sensorial dinámica" (DSS). El primer objetivo de este trabajo es describir la implementación de un salón interactivo que utiliza esta tecnología para mostrar algunas características organolépticas del pisco y el vino. La tecnología DSS está equipada con equipos sincronizados que brindan a los visitantes una experiencia sensorial integral que consiste en estimulación climática, similar a la del viñedo (principalmente en cuanto a temperatura y humedad relativa); estimulación olfativa con diferentes aromas a través de un aerosol controlado (simulando la recolección de olores asociados con los procesos de fermentación y destilación); estimulación científico-gustativa (degustación técnica); y estimulación audiovisual a través de imágenes y sonidos típicos de un viñedo. El segundo objetivo del artículo es describir la percepción y el nivel de satisfacción de los visitantes de la sala interactiva. Los resultados indican que es posible utilizar la tecnología DSS en un salón interactivo para promover la difusión de las actividades de vinificación en Arequipa, Perú.The present innovation project attempts to bolster the promotion and diffusion of wine-making activities through the introduction of 'dynamic sensory stimulation' technology (DSS). The first objective of this paper is to describe the implementation of an interactive lounge that uses this technology for the display of some organoleptic characteristics of pisco and wine. DSS technology is outfitted with synchronized equipment which provides the visitors with an integral, sensory experience consisting of climatic stimulation, similar to the one of the vineyard (principally in regard to temperature and relative humidity); olfactory stimulation with different aromas via a controlled spray (simulating the collection of smells associated with the processes of fermentation and distillation); scientific-gustatory stimulation (technical tasting); and audiovisual stimulation through images and sounds typical of a vineyard. The paper's second aim is to describe the perception and satisfaction level of the visitors of the interactive lounge. The results indicate that it is possible to utilize DSS technology in an interactive lounge in order to further the diffusion of wine-making activities in Arequipa, Peru.Revisión por paresCampus Arequip

Solar thermoelectric cooling technology applied to transport of vaccines in isolated communities

A thermoelectric cooling system supplied by photovoltaic solar energy was built and evaluated with different thermal loads. The thermoelectric cooling module consumes 70 W, it is supplied by a photovoltaic system of 90 W and 40 Ah battery. The voltage and electrical current in each component (panels, battery, and electric charge) has been measured. The tests were performed with different thermal loads placed in glass containers used for vaccines. To analyze the cooling and preservation process, the experiments were started at room temperature. The results show that the thermoelectric cooling system works for small thermal loads, and it could be applied to transport vaccines in isolated areas where people carry medicines in small containers that do not maintain the temperature necessary for the conservation of vaccines

Sizing methodology for photovoltaic systems considering coupling of solar energy potential and the electric load: dynamic simulation and financial assessment

A reliable methodology for the dimensioning of photovoltaic systems is presented in this paper. This method generates technical-financial variables that aid in the choice of the most adequate photovoltaic power system for each project. The techniques that are usually used determine the size of PV power plants considering the monthly average of the solar energy potential of the month with the lowest solar radiation and the electricity to be supplied to satisfy the demand. These conventional techniques generate an uncertainty of at least 40 %, mainly due to the daily dispersion of the solar energy availability and of the electric load. The proposed methodology takes into account a region’s own photovoltaic energy potential and the detailed characteristics of the electric load, matching both with different PV power plants sizes, and analyzing the whole during a time period that guarantees the reliability of the results. The energy coupling is performed integrating the energy parameters (solar energy and electric load) in short time intervals (30 minutes maximum) to determine the supplied energy, the unsupplied energy demand and the unused solar energy. The daily integration of the three factors, using a dynamic simulation and performing a financial evaluation, allows for the identification of the most appropriate PV power plant size for every project. The results indicate that this methodology reduces the uncertainty of the solar power-electric load coupling from 40 % to 2.2 %, which allows a better definition of the financial variables that determine the most appropriate installed solar power for a photovoltaic project

Costs of Perico (Coryphaena Hippurus) freezing for the improvement of the quality of life of artisanal fishermen in Peru

An experimental study was carried out to determine the costs of freezing artisanally fished Perico (Coryphaena Hippurus) in Peru. A refrigeration chamber was equipped with electrical and temperature sensors to determine the thermal efficiency and thus calculate the costs of freezing the fish. The results indicate that it is possible to freeze and store fish to avoid speculation due to over production and thus improve the selling prices. In this way, it is possible to store the fish until the prices are attractive again so that fishermen sell their product at fair prices and progressively improve their quality of life

Application of a solar photovoltaic system to artisanal fishing products freezing in Peru

An experimental study has been carried out to reduce the costs of freezing products from artisanal fishing in Peru using a photovoltaic solar system. The refrigeration chamber and the photovoltaic system have been equipped with electrical sensors to determine the cooling efficiency and thus calculate the savings. The results indicate that it is possible to reduce costs up to 45% using photovoltaic solar energy. The target users of this technology are artisanal fishermen in Peru. Using photovoltaic energy for freezing would allow them to add value to their products and improve their selling price. In this way, fish commercialization can be performed in better sanitary conditions and at fair prices

Production cost of ice slurry using a saline solution and different ice mass fractions, applied to “Perico” (Coryphaena Hippurus) artisanal fishing in Peru

An experimental study was carried out to determine the production costs of ice slurry, using a saline solution with different fractions of ice, for “Perico” (Coryphaena Hippurus) artisanal fishing in the Peruvian sea. A 3-kW ice slurry generator, portable enough to fit in an artisanal boat, was used. The prototype was instrumented with sensors for temperature, density, and electrical parameters (voltage, current, power) measurement in order to determine the ice mass fraction and production costs. The results indicated that not only ice slurry ensures a higher cooling speed and less damage to the product, but also, its production costs are lower compared to flake ice