Correction published on 25 September 2014,
see
Energies 2014, 7(9), 6223.
Energies 2014, 7(6), 3781-3792; doi:10.3390/en7063781
Solar Air Collectors for Space Heating and Ventilation Applications—Performance and Case Studies under Romanian Climatic Conditions†
Hydraulics, Hydraulic Machinery and Environmental Engineering Department, Power Engineering Faculty, University Politechnica of Bucharest, 313 Spl. Independentei, District 6, Bucharest 060042, Romania
†
This paper was previously presented at the 1st International e-Conference on Energies 2014, c016, doi:10.3390/ece-1-c016, available online: http://www.sciforum.net/conference/ece-1/paper/2344.
Received: 9 April 2014 / Revised: 12 June 2014 / Accepted: 13 June 2014 / Published: 18 June 2014
(This article belongs to the Special Issue Selected Papers from the 1st International e-Conference on Energies — Whither Energy Conversion? Present Trends, Current Problems and Realistic Future Solutions)
Abstract
Solar air collectors have various applications: on the one hand, they can be used for air heating in cold seasons; on the other hand they can be used in summer to evacuate the warm and polluted air from residential, offices, industrial, and commercial buildings. The paper presents experimental results of a solar collector air, under the climatic conditions of the Southeastern Europe. The relationships between the direct solar irradiation, the resulting heat flow, the air velocity at the outlet, the air flow rate, the nominal regime of the collector and the efficiency of conversion of solar energy into thermal energy are all highlighted. Thus, it was shown that after a maximum 50 min, solar air collectors, with baffles and double air passage can reach over 50% efficiency for solar irradiation of 900–1000 W/m2. The article also presents a mathematical model and the results of a computational program that allows sizing solar collectors for the transfer of air, with the purpose of improving the natural ventilation of buildings. The article is completed with case studies, sizing the area to be covered with solar collectors, to ensure ventilation of a house with two floors or for an office building. In addition, the ACH (air change per hour) coefficient was calculated and compared. View Full-TextKeywords:
solar air collector; performances; space heating; cooling; case studies
▼
Figures
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
Share & Cite This Article
MDPI and ACS Style
Budea, S. Solar Air Collectors for Space Heating and Ventilation Applications—Performance and Case Studies under Romanian Climatic Conditions. Energies 2014, 7, 3781-3792.
Related Articles
Article Metrics
Comments
[Return to top]
Energies
EISSN 1996-1073
Published by MDPI AG, Basel, Switzerland
RSS
E-Mail Table of Contents Alert