Ingrid Nobre-Amraoui, Wasiu Orewole, Kalam Wong, Sergio Cuadra Fonseca Evacuated Solar Tube Collector

Helsinki Metopolia University of Applied Sciences Environmental Engineering Degree Programme 24 February 2011

Author(s)TitleNumber of PagesDate | Ingrid Nobre-Amraoui, Wasiu Orewole, Kalam Wong, Sergio Cuadra FonsecaEvacuated Solar Tube Collectorxx pages + x appendices 24 February 2011 | Degree | Project 2 – Professional Project | Degree Programme | Environmental Engineering | Instructor(s) | Antti Tohka, Project ManagerMinna Paananen Porkka, Principal Lecturer | The use of solar collectors for domestic purposes is a new way of saving energy costs. There are different types of solar collectors that are commonly used for different domestic purposes. The choice of a solar collector usually depends on factors such as; the total cost of the collector, climatic condition etc.The purpose of this project was to test how well a type of solar heat collector; evacuated solar tube collector in particular, would function in Finland, a country with a very harsh climate.The solar collector was assembled according to the manual provided by the manufacturer. The original plan was to connect the solar collector to the water (heat) network of the Eco- House located at Metropolia University of Applied sciences in Vantaa. Measurements were meant to be taken during the coldest months of winter, when the solar irradiation is at its minimum.During the assembling of the collector, it was realized that most of the tubes have been broken. The project was unable to proceed due to this occurrence. Therefore, the project was terminated and the aim of the project had to be re-defined to focus on a theory based research project. |

Table of Contents

1 Introduction 1 2 Operating Principle of Evacuated Tube Collectors 2

2.1 Types and System Design of Solar Collectors 3
2.2 The Operating Principle and Auxiliary Equipments 3
2.3 Make-up of tube collectors