A Proposition for Solar Collector Incorporation in an Office Size Vapor Absorption Air Conditioning System with Low Electricity Consumption
Abstract
A water vapor absorption air-conditioning system is proposed for installation at residential buildings and offices within the extreme weather of Iraq. The hot water required for evaporating water content of LiBr solution is supplied by a series of flat plate and concentrated solar collectors with a basic design that is expected to raise the temperature of water to the required value. Space saving and cost reduction are considered; therefore, the system can be easily manufactured and installed. Theoretical calculations and recommended data for design are given, and compared with a similar existing system. The proposed system is expected to run and deliver the required cooling capacity at relatively low electricity consumption, less than 1,500 W. The cost of manufacturing is also low since simple and cheap components are involved, for instance, a conventional air cooler is proposed as a substitution for a cooling tower. Although the expected coefficient of performance for the system is low compared to the available vapor compression system (about 0.3), the free of charge solar heat source turns it in more cost-effective unit regarding the increasing electricity consumption of conventional air conditioners and shortage in electricity supply hours, especially in Iraq.
Keywords: air conditioning system, lithium bromide, solar collector, coefficient of performance, electricity consumption.
Full Text:
PDFReferences
AL-SAIYDEE MAM. Experimental and Theoretical Analysis of Thermal Losses in a Flat Plate Solar Heater with Multi Risers and Headers [J]. Journal of Mechanical Engineering Research and Developments, 2021, 44(5): 44-51.
AL-SAIYDEE MAM., ALHAMADANI AAF, and ALLAMY W. A Series Arrangement of Economizer – Evaporator Flat Solar Collectors as an Enhancement for Solar Steam Generator [J]. Journal of Ecological Engineering, 2021, 22(5): 121–128.
AL-KAYIEM HH and MOHAMMAD ST. Potential of Renewable Energy Resources with an Emphasis on Solar Power in Iraq: An Outlook [J]. 2019, Resources, 8(1), 42; https://doi.org/10.3390/resources8010042
HUSSEIN HA, et al. Solar Photovoltaic Direct-Driven Air Conditioning System Performance in Iraq [J]. Engineering and Technology Journal, 2020, 38 (7), Part A: 984-991.
ABOELMAAREF MM, ZAYED ME, ELSHEIKH AH, et al. Design and Performance Analysis of a Thermoelectric Air-Conditioning System Driven by Solar Photovoltaic Panels [J]. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2020, https://doi.org/10.1177/0954406220976164
DAUT M, et al. Solar Powered Air Conditioning System [J]. Energy Procedia, 2013, 36: 444-453.
HUANG L, RONGYUE Z and PIONTEK U. Installation and Operation of a Solar Cooling and Heating System Incorporated with Air-Source Heat Pumps [J]. Energies, 2019, 12, 996; https://doi.org/10.3390/en12060996
KHALED M, GAD EL-RAB M, RAMADAN M & AL HASSANIEH A. Modeling of a solar lithium bromide-water absorption air conditioner in Beirut [C]. Cairo, Egypt. 2015, Proceedings of the 7th World Congress on Power and Energy Engineering WCPEE2015, article ID 046.
HAW LC, SOPIAN K, and SULAIMAN Y. An Overview of Solar Assisted Air-Conditioning System Application in Small Office Buildings in Malaysia [C]. Proceedings of the 4th IASME/WSEAS International Conference on ENERGY & ENVIRONMENT, 2009, 244-251.
MUHAMMED MA and GHEDAYER AR. Temperature Distribution in Core and Winding of a Transformer and its Effect on Performance [J]. 2016, Wasit Journal of Engineering Sciences, 4(2): 17-25.
WIETELMANN U and STEINBILD M. Lithium and Lithium Compounds. Ullmann's Encyclopedia of Industrial Chemistry [J]. 2014, Wiley-VCH: Weinheim, https://doi.org/10.1002/14356007.
MAHMMOD AM. A Low-Cost House Model with Moderate Inside Temperature Using Natural Ventilation. Al Teqani Journal, 2015, 27(1): 42-53.
KALOGIROU SA. Solar Thermal Collectors and Applications [J]. Progress in Energy and Combustion Science, 2004, 30(3): 231-295.
KREIDER JF and KREITH F. Solar systems for space cooling [M]. New York: McGraw-Hill, 1981: 643-688.
LOF G and TYBOUT R. The design and cost of optimized systems for residential heating and cooling by solar energy. Solar Energy, 1974, 16: 9-18.
LAZZARIN RM and BOLDRIN B. Experimental investigation on control modes for an absorption chiller of low capacity [C]. Proceedings of the ISES, Silver Jubilee, Georgia Congress Atlanta, 1979, 1: 710-714.
GILANI IS and AHMED MSMS. Solution Crystallization Detection for double-effect LiBr-H2O steam absorption chiller [J]. Energy Procedia, 2015, 75: 1522-1528.
INCROPERA FP, et al. Fundamentals of heat and mass transfer [M]. The USA, John Willey & Sons, 2007: 566-578.
ASHRAE Handbook - HVAC Systems and Equipment, 2012.
WANG SK. Handbook of Air Conditioning and Refrigeration [M]. McGraw-Hill Company, second edition, 2001: 768-777.
WILBUR PJ and MITCHELL CE. Solar absorption air-conditioning alternatives [J]. Solar Energy Journal, 1975, 17: 193-9.
KWOK AG and GRONDZIK WT. The Green Studio Handbook – Environmental Strategies for schematic design [M]. UK, Elsevier Inc., 2007.
Refbacks
- There are currently no refbacks.
