scholarly journals System Design of Solar Absorption Cooling : A Case Study in Building of Engineering Physics Department UGM

KnE Energy ◽  
2015 ◽  
Vol 2 (2) ◽  
pp. 22
Author(s):  
Andang Widiharto ◽  
Didit Setyo Pamuji ◽  
Atik Nurul Laila ◽  
Fiki Rahmatika Salis ◽  
Luthfi Zharif ◽  
...  
Keyword(s):  
Global Warming ◽  
Solar Collector ◽  
Air Conditioning ◽  
Cooling System ◽  
Renewable Energy Sources ◽  
Coefficient Of Performance ◽  
Thermal Coefficient ◽  
Solar Absorption ◽  
Absorption Cooling ◽  
Solar Absorption Cooling

<p>Air conditioning (AC) is one of the most building’s energy consumer, included in building of Engineering Physisc’s Departement, Universitas Gadjah Mada (UGM). The declining of fossil fuel reserves and the increasing effects of global warming, forcing the world to switch to renewable energy sources. This paper discusses the design of solar absorption cooling system to replace conventional AC in seven lecture halls of Engineering Physic’s Departement, UGM. There are some steps that have been done to design the solar absorption cooling, i.e. do a study of the potential availability of solar energy, calculate the cooling loads, analyze the thermodynamic process of the system, determine the type of collector to be used and calculate area of solar collector needed. The thermal coefficient of performance (COP) of the system designed was about 0.84 which could use some types of flat plate solar collector with each area corresponding to each efficiency values. </p><p><strong>Keyword</strong> : Air conditioning; global warming; solar absorption cooling; solar collector</p>

scholarly journals Modelling and simulation of a solar absorption cooling system for India

2006 ◽  
Vol 17 (3) ◽  
pp. 65-70 ◽  
Author(s):  
V Mittal ◽  
K S Kasana ◽  
N S Thakur
Keyword(s):  
Surface Area ◽  
Cooling System ◽  
Hot Water ◽  
Coefficient Of Performance ◽  
Reference Temperature ◽  
Inlet Temperature ◽  
Solar Absorption ◽  
Absorption Cooling ◽  
Solar Absorption Cooling ◽  
Absorption Cooling System

This paper presents modelling and simulation of a solar absorption cooling system. In this paper, the modelling of a solar-powered, single stage, absorption cooling system, using a flat plate collector and water–lithium bromide solution, is done. A computer program has been developed for the absorption system to simulate various cycle configurations with the help of various weather data for the village Bahal, District Bhiwani, Haryana, India. The effects of hot water inlet temperatures on the coefficient of performance (COP) and the surface area of the absorption cooling component are studied. The hot water inlet temperature is found to affect the surface area of some of the system components. Moreover the effect of the reference temperature which is the minimum allowable hot water inlet temperature on the fraction of total load met by non-purchased energy (FNP) and coefficient of performance (COP) is studied and it is found that high reference temperature increases the system COP and decreases the surface area of system components but lower reference temperature gives better results for FNP than high reference temperatures.

scholarly journals Performance of a Solar Absorption Cooling System Using Nanofluids and a Membrane-Based Microchannel Desorber

2020 ◽  
Vol 10 (8) ◽  
pp. 2761
Author(s):  
María Venegas ◽  
Néstor García-Hernando ◽  
Alejandro Zacarías ◽  
Mercedes de Vega
Keyword(s):  
Thermal Conductivity ◽  
Cooling System ◽  
Lithium Bromide ◽  
Coefficient Of Performance ◽  
Solar Thermal Energy ◽  
Solar Absorption ◽  
Absorption Cooling ◽  
Lithium Bromide Solution ◽  
Solar Absorption Cooling ◽  
Absorption Cooling System

In this work, the performance of a single effect absorption cooling system fed by solar thermal energy is evaluated. The absorption chiller includes a membrane-based microchannel desorber using three types of nanoparticles: Al2O3, CuO, or carbon nanotubes (CNT). Correlations available in the open literature to calculate the thermal conductivity of nanofluids are reviewed. Using experimental data for the water-lithium bromide solution (H2O-LiBr) with Al2O3 and CNT nanoparticles, the most appropriate correlation for thermal conductivity is selected. Nanofluid properties are evaluated using a concentration of nanoparticles of up to 5% in volume. The largest increase in the desorption rate (7.9%), with respect to using pure H2O-LiBr solution, is obtained using CNT nanoparticles and the maximum concentration of nanoparticles simulated. The performance of the chiller is evaluated and the daily solar coefficient of performance (SCOP) for the solar cooling facility is obtained. The best improvement with respect to the conventional system (without nanoparticles) represents an increase in the cooling effect of up to 6%. The maximum number of desorber modules recommended, always lower than 50, has been identified.

The study of solar absorption air-conditioning systems

2005 ◽  
Vol 16 (4) ◽  
pp. 59-66 ◽  
Author(s):  
V Mittal ◽  
KS Kasana ◽  
NS Thakur
Keyword(s):  
Air Conditioning ◽  
Lithium Bromide ◽  
Cooling Systems ◽  
Solar Absorption ◽  
Air Conditioning System ◽  
Heating And Cooling ◽  
Absorption Cooling ◽  
Solar Powered ◽  
Solar Absorption Cooling ◽  
Air Conditioning Systems

An air-conditioning system utilizing solar energy would generally be more efficient, cost wise, if it was used to provide both heating and cooling requirements in the building it serves. Various solar powered heating systems have been tested extensively, but solar powered air conditioning systems have received very little attention. Solar powered absorption cooling systems can serve both heating and cooling requirements in the building it serves. Many researchers have studied the solar absorption air conditioning system in order to make it economically and technically viable. But still, much more research in this area is needed. This paper will help many researchers working in this area and provide them with fundamental knowledge on absorption systems, and a detailed review on the past efforts in the field of solar absorption cooling systems with the absorption pair of lithium-bromide and water. This knowledge will help them to start the parametric study in order to investigate the influence of key parameters on the overall system performance.

scholarly journals A New Design of an Integrated Solar Absorption Cooling System Driven by an Evacuated Tube Collector: A Case Study for Baghdad, Iraq

2020 ◽  
Vol 10 (10) ◽  
pp. 3622 ◽  
Author(s):  
Adil Al-Falahi ◽  
Falah Alobaid ◽  
Bernd Epple
Keyword(s):  
Thermal Performance ◽  
Air Conditioning ◽  
Cooling System ◽  
Electrical Power ◽  
Energy Performance ◽  
Coefficient Of Performance ◽  
Solar Absorption ◽  
Air Conditioning System ◽  
Solar Fraction ◽  
Design Variables

The electrical power consumption of refrigeration equipment leads to a significant influence on the supply network, especially on the hottest days during the cooling season (and this is besides the conventional electricity problem in Iraq). The aim of this work is to investigate the energy performance of a solar-driven air-conditioning system utilizing absorption technology under climate in Baghdad, Iraq. The solar fraction and the thermal performance of the solar air-conditioning system were analyzed for various months in the cooling season. It was found that the system operating in August shows the best monthly average solar fraction (of 59.4%) and coefficient of performance (COP) (of 0.52) due to the high solar potential in this month. Moreover, the seasonal integrated collector efficiency was 54%, providing a seasonal solar fraction of 58%, and the COP of the absorption chiller was 0.44, which was in limit, as reported in the literature for similar systems. A detailed parametric analysis was carried out to evaluate the thermal performance of the system and analyses, and the effect of design variables on the solar fraction of the system during the cooling season.

Optimum operational strategies for a solar absorption cooling system in an isolated school of Mexico

2020 ◽  
Vol 112 ◽  
pp. 1-13 ◽  
Author(s):  
J.A. Aguilar-Jiménez ◽  
N. Velázquez-Limón ◽  
R. López-Zavala ◽  
L.A. González-Uribe ◽  
S. Islas ◽  
...  
Keyword(s):  
Cooling System ◽  
Solar Absorption ◽  
Operational Strategies ◽  
Absorption Cooling ◽  
Solar Absorption Cooling ◽  
Absorption Cooling System

Design and Analysis of an Integrated Solar Absorption Cooling and Heating System at Purdue University

2010 ◽  
Author(s):  
Yin Hang ◽  
Ming Qu
Keyword(s):  
System Performance ◽  
Cooling System ◽  
Solar Heating ◽  
Solar Absorption ◽  
Solar Cooling ◽  
Heating And Cooling ◽  
Absorption Cooling ◽  
Testing Stage ◽  
Purdue University ◽  
Solar Absorption Cooling

As one of the most promising solutions to the reduction of fossil fuel consumption and greenhouse gas emissions, the use of solar energy for building space heating and cooling recently has again aroused researcher’s interest with the growing awareness of the global warming and other environmental problems. Compared to the relatively mature solar heating, solar cooling technology remains at the demonstration and testing stage due to its complicated system characteristics, both in concept and construction. Among many solar cooling technologies, solar absorption technology is the most suitable technology for the solar cooling. The major barriers to widespread deployment of the solar absorption cooling are its high first cost, the lack of guidelines of its design and operation, and the relative low system performance due to the lack of the system integration. The paper provides detailed information of an on-going solar heating and cooling research project conducted at Purdue University in West Lafayette, Indiana. The aim of the research is to develop a cost-effective and integrated solar heating and cooling system. The solar thermal system primarily includes a 45kW single effect absorption chiller, evacuated tube solar collectors (ET), and heat storage tanks. The system has been designed based upon scientific principles and engineering fundamentals. It has been analyzed and optimized to achieve the high cost-effectiveness and the high system efficiency through the system performance simulation in Transient Energy System Simulation (TRNSYS) program.

Design of a solar absorption cooling system in a Greek hospital

2010 ◽  
Vol 42 (2) ◽  
pp. 265-272 ◽  
Author(s):  
T. Tsoutsos ◽  
E. Aloumpi ◽  
Z. Gkouskos ◽  
M. Karagiorgas
Keyword(s):  
Cooling System ◽  
Solar Absorption ◽  
Absorption Cooling ◽  
Greek Hospital ◽  
Solar Absorption Cooling ◽  
Absorption Cooling System
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