Optimization of a Thermoelectric Cooling System with Peltier Effect
Louis Okotaka Ebale,
Landry Jean Pierre Gomat,
Nzonzolo,
Marc Romaric Mavoungou,
Feldha Kibongani
Issue:
Volume 7, Issue 3, September 2019
Pages:
55-63
Received:
25 September 2019
Accepted:
8 October 2019
Published:
20 October 2019
Abstract: The use of the Peltier effect for the cooling of a cooler powered by photovoltaic energy is a solution for the conservation of foodstuffs or pharmaceuticals when conditions as well geographical and climatic become difficult. Only a problem often arises with the choice of the supply current. Indeed, a choice of the supply current too low will produce less cold while a choice of too much supply current (very close to the maximum value indicated by the manufacturer of the module) will produce more cold, but the module will work in saturation, which will reduce its life. This article proposes to present the possibility of optimizing a thermoelectric refrigeration installation. In particular: by improving the performances of the installation, by maximizing the coefficient of performance and the cooling capacity as a function of the power supply current of the Peltier effect module (of the TEC1-12706 type). Thus, to solve this problem, we propose an optimization of the thermoelectric installation while passing by the method of the derivatives which will make it possible to find this optimal current. This optimal current will be average current corresponding to the performance coefficient and the current for which the refrigeration power becomes maximum.
Abstract: The use of the Peltier effect for the cooling of a cooler powered by photovoltaic energy is a solution for the conservation of foodstuffs or pharmaceuticals when conditions as well geographical and climatic become difficult. Only a problem often arises with the choice of the supply current. Indeed, a choice of the supply current too low will produc...
Show More
Optimal and Economic Evaluation of a Stand-alone Microgrid for Electricity and Water Supply for Namibia’s Rural Village
Tom Wanjekeche,
Theophilus Ananias
Issue:
Volume 7, Issue 3, September 2019
Pages:
64-73
Received:
16 October 2019
Accepted:
4 November 2019
Published:
11 November 2019
Abstract: Stand-alone microgrid hold a primary solution for electricity and water supply in remote areas access to National grid is not possible. This paper presents a detailed optimal sizing and economic evaluations of a stand-alone microgrid for a remote village (Amarika) in Namibia. Several renewable energy sources such as wind turbines and photovoltaic arrays were considered with a battery backup storage system and a reverse osmosis desalination plant for water supply. Modelling of the microgrid was done based on the meteorological data, the daily water and energy demand of the village. Particle swarm optimization was employed for the system techno- economic optimization: to determine a suitable microgrid configuration that can be established at minimum cost. Sensitivity analysis of the system was performed to examine the effect of variation of LPSP on LCOE. The results demonstrate that the optimized microgrid configuration and the optimization algorithm are effective and can be adopted in supplying power and water to the village. The levelized cost of electricity proves the economic feasibility of the microgrid. The levelized cost of electricity falls within a 90% standard deviation (σ=0.065) of the mean. This proved to be economically feasible with a 96.5% reliability of power supply.
Abstract: Stand-alone microgrid hold a primary solution for electricity and water supply in remote areas access to National grid is not possible. This paper presents a detailed optimal sizing and economic evaluations of a stand-alone microgrid for a remote village (Amarika) in Namibia. Several renewable energy sources such as wind turbines and photovoltaic a...
Show More
