Investigation of a Solar Space Heating System Based on an Evacuated Tube Collector for Baghdad Climatic Conditions

Alaa H. Shneishil, Department of Physics, College of Education, Mustansiriyah University, Baghdad
Jaber O. Dahloos, Environment Researches Center and Renewable Energy, University of Kerbala, KerbalaFollow
Khalid G. Mohammed, Department of Physics, College of Education, Mustansiriyah University, Baghdad

Abstract

The current work aims at evaluating the overall experimental performance of the solar space heating system regarding the local meteorological conditions of Baghdad. Two types of systems have been considered, namely, the thermal radiator with and without a fan. Indeed, a thermal radiator is connected to evacuate the tube solar collector through a circulating pump to distribute the heat into a room with dimensions of (3×3 m²). The experimental measurements for the current research were carried out during a period of six days in February and March, i.e., under mild conditions where the weather ranged between sunny and cloudy during the day. In order to find out the system performance, the solar radiation intensity, wind speed, inlet and outlet temperatures from solar collectors, inlet and outlet temperatures from thermal radiators, room temperature, and ambient temperature have been measured using specific instruments. The results revealed that, under sunny conditions, the room temperature of the system without a fan changes from 16.2 ^oC to 23.9 ^oC with a temperature difference of 7.7 ^oC. However, when a fan is used, the temperature difference reaches 10 ^oC. Such an improvement in the performance of the solar heating system that characterized the current work in comparison with its counterpart research is a direct result of the adoption of two main ideas. The first of them is the use of a modern metal heat exchanger that contains vertical and horizontal tubes. In addition to that, it is equipped with a fan that helps to increase the heat exchange between the heat radiator and the room space due to forced convection. Furthermore, the fan works to distribute the heat homogeneously inside the room, thus increasing the efficiency of the system. The second idea, however, is the use of a modern system represented by software that analyzes the results and evaluates the values of solar radiation and wind speed.

Recommended Citation

Shneishil, Alaa H.; Dahloos, Jaber O.; and Mohammed, Khalid G. (2022) "Investigation of a Solar Space Heating System Based on an Evacuated Tube Collector for Baghdad Climatic Conditions," Karbala International Journal of Modern Science: Vol. 8 : Iss. 4 , Article 4.
Available at: https://doi.org/10.33640/2405-609X.3261