Life Cycle Cost for a Solar Heating and Cooling System

2009 ◽  
Author(s):  
Yin Hang ◽  
Ming Qu
Keyword(s):  
Life Cycle ◽  
Life Cycle Cost ◽  
Cooling System ◽  
Heating System ◽  
Solar Heating ◽  
Hot Water ◽  
Solar Absorption ◽  
Heating And Cooling ◽  
Absorption Cooling ◽  
Solar Absorption Cooling

Solar absorption cooling has been an intriguing research subject since 1970. However, it is not widely applied because the first cost of the system is high, the commercial hot water absorption chiller is not mature, the site demonstration and evaluation are not adequate and the price of conventional fossil energy sources is relatively low. This paper investigates the commercialization potentials of solar absorption cooling and solar heating system by comparing the life cycle cost between it and the conventional electrical chiller cooling and gas-fired boiler heating system. A computational model has been programmed in the Engineering Equation Solver (EES) to analyze the economical performances of the two systems applied to a dedicated building. The model considers the cost of capital, installation, operation and maintenance, the discount rate, the fuel prices, and the inflation rates. The result of the model indicated that given the present fuel cost, the solar absorption cooling and heating system is not as economic as the conventional system especially when its size is small. However, according to the sensitivity analysis carried, the solar absorption cooling and heating system could compete with the conventional cooling and heating system when the electricity price and fuel inflation increase.

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.

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.

Experiment Based Performance Analysis of a Solar Absorption Cooling and Heating System in Carnegie Mellon University

2008 ◽  
Author(s):  
Ming Qu ◽  
David H. Archer ◽  
Hongxi Yin
Keyword(s):  
Residential Buildings ◽  
Heating System ◽  
Test System ◽  
Hot Water ◽  
Small Scale ◽  
Absorption Chiller ◽  
Solar Absorption ◽  
Solar Cooling ◽  
Absorption Cooling ◽  
Solar Absorption Cooling

The center for building performance and diagnostic (CBPD) at Carnegie Mellon University has successfully designed, installed and tested a solar cooling and heating system to assess the feasibility of solar cooling for small scale commercial buildings or residential buildings with aspects of technology and energy efficiency. This solar cooling and heating system is primarily comprised of parabolic trough solar collectors, PTSC’s and a 16 kW dual energy source double effect (2E) absorption chiller. The 2E absorption chiller driven by PTSCs was tested to produce chilled water or hot water throughout a number of clear days in summer and winter. The analyses of the experimental data defined the system performance: the efficiency of the solar collector, the capacity and COP of the chiller, and the heat transfer coefficient of the heat recovery exchanger, by using a statistical approach, based on the energy balance equation. In the solar cooling tests during July 2007 in Pittsburgh, PA, the average efficiency of PTSCs was 35% when they were operated at about 155°C for driving the 2E absorption chiller and the chiller was able to provide 8 to 14 kW cooling with COP in the range 1.0 to 1.2; the overall system efficiency is in the range 0.35 to 0.41. In the near future, this solar absorption cooling and heating test system and its operation will be integrated with the cooling, heating and ventilation units for long term utilization.

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.

Optimization Under Uncertainty: A Case Study of a Solar Absorption Cooling and Heating System for a Medium-Sized Office Building in Atlanta

2012 ◽  
Author(s):  
Yin Hang ◽  
Ming Qu ◽  
Fu Zhao
Keyword(s):  
Uncertainty Analysis ◽  
Heating System ◽  
System Optimization ◽  
Optimization Under Uncertainty ◽  
Office Building ◽  
Medium Size ◽  
Solar Absorption ◽  
Absorption Cooling ◽  
Solar Absorption Cooling

Solar absorption cooling and heating (SACH) systems currently still stay at development and demonstration stage due to the nature of the complex system. It is critical for practitioners and engineers to have a correct and complete performance analyses and evaluation for SACH systems with respects of energy, economics, and environment. Optimization is necessarily involved to find the optimal system design by considering these three aspects. However, many assumptions made in the optimization are sensitive to the energy, economic, and environmental variations, and thus the optimization results will be affected. Therefore, the sensitivity and uncertainty analysis is important and necessary to make optimization robust. This paper uses a case study to explore the influence of the uncertainties on the SACH system optimization results. The case is a SACH system for a medium size office building in Atlanta. The one parameter at a time (OAT) sensitivity analysis method was applied firstly to determine the most sensitive inputs. Monte Carlo statistical method was utilized to generate the data sets for uncertainty analysis. The optimization problem under uncertainty was then formulated and solved. Due to the uncertainty associated with system inputs, the optimization solutions were found with certain types of the distributions. In addition, the scenario analysis on electricity price does not show large sensitivity to the objectives.

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
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