Uso de aquecedor solar de baixo custo no preaquecimento de água para cocção de alimentos

Abstract

The objective of this work was to manufacture and evaluate a low cost solar heater with the purpose of preheating water for food cooking. Initially it was raised costs and built a prototype solar heater using PVC pipes, pet bottles and cartons of milk cartons. Next, the system's water temperature elevation was evaluated and the water already preheated was used to prepare the food in the LPG gas stove and to check the cooking time of the food and the savings achieved. It was found a reduction in cooking time of a total of 57 minutes. The use of the system is effective for the domestic economy of LPG gas. Given the efficiency of the system, it is found to be a source of LPG gas savings for low-income families and an excellent environmentally and socially sustainable alternative.+5