Solar cooling Research Papers - Academia.edu (original) (raw)

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- by
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- Mechanical Engineering, Modeling, Performance, Energy Consumption
- by P. Papillon
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- Performance, Solar cooling
- by Antoine Dalibard
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- Engineering, Heat Exchanger, Physical sciences, Solar cooling

Cooling and airconditioning systems are the primary consumers of building energy in hot and mixed climate locations. The reliance on traditional systems, driven electrically, is the main reason behind the deterioration and ever-increasing demand for energy in buildings. This is also associated with a vast amount of CO 2 emissions and other environmental concerns. Solar energy has been introduced as a crucial alternative for many applications, including cooling and airconditioning , which has been proven to be a reliable and excellent energy source. This paper presents and discusses a general overview of solar cooling and airconditioning systems (SCACSs) used for building applications. The popular SCACSs driven by solar thermal energy are elaborated in detail, considering their operation and development aspects. A comparison among solar thermal SCACSs is performed, taking into account several technical, operational, economic and environmental indicators. Some research gaps, recommendations, and conclusions are derived from the reviewed literature to understand and further develop this essential research domain.

- by Qudama Al-Yasiri and +1
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- Renewable Energy, Cooling, Solar cooling, Solar cooling using vapour Absorption/ Adsorption
- by Prof. Dr. Ahmed Hamza H. Ali
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- Water, Refrigeration, Performance, Temperature

The conventional refrigeration systems use fossil fuels for their energy inputs. Due to the growing environmental degradation and fossil fuel depletion issues, energy supply from alternative sources is gaining huge attention. Solar driven refrigeration system, which uses solar energy as its energy input, not only addresses these challenges and but also enhances sustainable development. In this work, we have developed a small-scale solar driven refrigeration system by combining several components such as a solar panel, a charge controller, a compressor, an inverter, an evaporator-tank, a condenser and a few connection wiring. We have operated the system for several days to check its functionality and performance. During operation, we have measured solar panel's current and voltage with a 5-minute interval to calculate power that has been supplied as an input to the compressor. The evaporator coils pass through the water tank to cool down water to a desired temperature (i.e. 4 ºC). The temperature of the evaporator and condenser was also recorded for calculating the cooling effect created by the refrigerant R-134a. We have calculated coefficient of performance (COP) of the system for both actual cooling load of water and cooling effect created by the refrigerant. The refrigeration system successfully operates with an actual COP of 0.95. Despite the COP is low, the solar driven refrigeration system, which does not require any fuel, is a promising option in regard to both environment and economic aspects.

- by Md. Mizanur Rahman
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- Solar cooling
- by Rossano Scoccia and +1
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- Mechanical Engineering, Absorption, Greenhouse Gas Emissions, Solar cooling
- by Haim Factor and +1
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- Engineering, Solar Energy, Air Conditioning, Solar cooling
- by Christoph Janiak
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- Inorganic Chemistry, Thermochemistry, Adsorption, Metal Organic Frameworks
- by burak tekin
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- Solar cooling, Adsorption Cooling

This paper provides a brief review of the installed solar-assisted technologies currently being used for cooling or air conditioning purposes. The review identifies some of the finest technologies used to convert solar energy into space cooling. Air conditioning is an attractive area for solar energy use since it is estimated that 45 % of household energy consumption is used for cooling. Solar cooling can be divided into two main types, solar thermal and solar photovoltaic (PV). Solar thermal based cooling systems fall into two categories, open cycle systems (desiccant employing either solid or liquid sorbents), and closed cycle systems (absorption, adsorption). Past studies have shown that absorption cooling is the most widely employed cooling technology because of its high performance. It is estimated that 59 % of the solar cooling systems in Europe use absorption cooling. Adsorption cooling is the second most widely employed cooling technology. The coefficient of performance (COP) of an air conditioning system is the ratio of useful cold per unit of invested driving heat. Higher COPs are associated with lower operating costs. The COP of a single-effect absorption chiller using LiBr-H2O as the working pair falls in the range 0.6 to 0.8 compared to a COP of 0.6 for the NH3-H2O working pair. Adsorption chillers have a lower COP in the range 0.2 to 0.6, however, these chillers can operate at a much lower generator inlet temperatures in the range of 45 ºC to 65 ºC. Single-ef ect absorption chillers can be made more efficient by adding a second stage to increase the heat transfer efficiency, known as double-ef ect, which produces a higher COP in the range 0.8 to 1.2, but adds to the cost of the system. Open-cycle systems provide direct treatment of air, such as desiccant cooling. Studies show that liquid desiccant air conditioning systems (LDAC) are now among the evolving technologies since they can be driven by low grade heat sources such as solar energy and industrial waste heat, however, the efficiency of these systems is limited by a low COP of 0.3 and these systems are weather dependent. Solar PV systems comprise electron producing solar technologies that drive conventional air conditioning methods, the most common being the vapour compression cycle. The main factors af ecting the performance of solar PV panels are direction, tilt angle, shading/shadow and temperature. The cooling capacity has to first be determined so as to give an approximate idea on how to design and construct the system with suf icient electrical energy supplied to it. Studies show that monocrystalline silicon PV panels are the most efficient PV technologies available, typically converting around 15 % of the sun’s energy into electricity. The manufacturing process required to produce monocrystalline silicon is, however, complicated, resulting in marginally higher costs than other technologies. Solar PV is becoming more commercially developed and with anticipated system cost cuts in the future it will be more suitable for small and large scale applications. With due consideration of these factors, the stability and efficiency of the system can be improved for greener solutions to the world’s energy needs.

- by IAEME Publication
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- Adsorption, Absorption, Solar cooling, Coefficient of Performance
- by Clito Afonso
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- Mechanical Engineering, Hybrid Systems, Air Conditioning, Solar cooling
- by Dr. Hassan K Abdulrahim and +1
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- Environmental Engineering, Mechanical Engineering, Chemical Engineering, Renewable Energy
- by Ferdinand Schmidt
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- Mechanical Engineering, Renewable Energy, Comparative Study, Photovoltaic
- by Dirk Pietruschka
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- Engineering, Time Series, Energy Efficiency Buildings, System Design
- by Giulio Santori
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- Mechanical Engineering, Renewable Energy, Refrigeration, Performance
- by Prof. Dr. Ahmed Hamza H. Ali
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- Engineering, Performance, Performance Assessment, Solar Energy
- by Juan C Zambrano and +1
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- Control Systems Engineering, Renewable Energy, Control Systems, Energías Renovables

Solar thermal heating for domestic hot water and space heating has grown considerably over the years and is well established in several countries, while solar air-conditioning is an emerging market with a huge growth potential. This article reviews representative European solar cooling installations and provides some practical design guidelines.

- by Constantinos Balaras and +1
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- Solar Energy, Solar Thermal Energy, Solar cooling, Solar cooling using vapour Absorption/ Adsorption
- by Miroslaw Skibniewski
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- Mechanical Engineering, Modeling, Performance, Energy Consumption
- by Prof. Dr. Ahmed Hamza H. Ali
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- Mechanical Engineering, Performance, Solar Energy, Air Conditioning
- by Ahmed Ali
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- Water, Refrigeration, Performance, Temperature
- by Ahmed Shaaban Soliman Hamed
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- Regeneration, Solar cooling
- by Armando Oliveira
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- Engineering, Economics, Performance, Housing
- by Walter Mittelbach
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- Mechanical Engineering, Adsorption, Air Conditioning, Chiller

Building sector globally accounts for more than 40 % of the energy use, consuming more than industrial or transport sector. Especially in hot climates cooling and air-conditioning represents the highest share of the energy used in buildings. Decreasing the cooling load and utilization of solar energy are key factors in minimizing the dependency on the power systems and maximizing the environmental effects having the suitable indoor comfort for the occupants. A comparison of traditional and modern technology has been conducted for hot climate and presented by a case study for Iraq. According to the calculations building retrofitting contributed by 14 % of reducing the need for cooling. As a
result, it can be concluded too that solar AC systems contribute to low electric power consumption (165 kWh) compared to the traditional one (around 1440 kWh) and results in a CO2 emission decreased by more than 88 %.

- by Qudama Al-Yasiri and +1
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- Building Integrated Solar Energy Technologies, Solar thermal, Sustainable Energy, Environmental Sustainability
- by Juan C Zambrano
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- Control Systems Engineering, Renewable Energy, Solar thermal, Control Systems
- by Prof. Dr. Ahmed Hamza H. Ali
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- System Design, Solar cooling
- by Manoj Pokhrel
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- Solar cooling
- by Prof. Dr. Ahmed Hamza H. Ali
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- System Design, Solar cooling

- by Marta Szabo and +1
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- Renewable Energy, Cooling, Solar cooling, Solar Cooling Systems
- by Michael Kauffeld
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- Solar cooling
- by Mixalis Karagiorgas
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- Solar thermal, Biological Sciences, Environmental Sciences, Solar Energy
- by Prof. Dr. Ahmed Hamza H. Ali
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- System Design, Solar cooling
- by Driss Stitou
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- Mechanical Engineering, Energy, Modeling, Performance
- by ahmed ali
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- Mechanical Engineering, Performance, Solar Energy, Air Conditioning
- by Prof. Dr. Ahmed Hamza H. Ali
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- System Design, Solar cooling
- by Prof. Dr. Ahmed Hamza H. Ali
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- System Design, Solar cooling
- by Clito Afonso
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- Engineering, Mechanical Engineering, Environmental Science, Hybrid Systems
- by Prof. Dr. Ahmed Hamza H. Ali
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- System Design, Solar cooling
- by Prof. Dr. Ahmed Hamza H. Ali
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- System Design, Solar cooling
- by Prof. Dr. Ahmed Hamza H. Ali
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- System Design, Solar cooling
- by Prof. Dr. Ahmed Hamza H. Ali
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- System Design, Solar cooling
- by M Kum Ja
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- Mechanical Engineering, Renewable Energy, Performance Analysis, Solar cooling
- by Chiheb Bouden
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- Engineering, Solar cooling
- by Prof. Dr. Ahmed Hamza H. Ali
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- System Design, Solar cooling
- by Prof. Dr. Ahmed Hamza H. Ali
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- System Design, Solar cooling

Solar energy is a renewable and efficacious source of energy which is most fundamentally used in recent and evolving technologies. Solar Cooling is one such technology which uses the energy produced from the solar photo-voltaic cell to generate cooling which further can be utilized for refrigeration and air conditioning applications. Developments in the field of solar-powered cooling systems have increased the scope of future research and global usage. This paper provides a review and analysis of different solar cooling technologies that can be implemented to generate a cooling effect in various applications. In this paper, Solar Thermal and Electrical technologies are discussed with different attributes which can be utilised for comparison, reflecting the advantages and correct usage for each technology

- by Sagun Tripathi
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- Chemistry, Climate Change, Regeneration, Heat and Mass Transfer