Simulation of Solar Cooling System For A Residential Building in South Africa
Simulation of Solar Cooling System For A Residential Building in South Africa
Simulation of Solar Cooling System For A Residential Building in South Africa
Outline
Introduction
Case of study
Simulation description
Simulation results
Economic analysis
Conclusion
References
Introduction
Introduction
What is solar cooling system?
Solar cooling systems refer to the use of solar energy to
power a cooling system.
Why solar cooling system?
Introduction (suite)
What is an absorption cooling system?
Case of study
Case of study
Days of October
Figure 2 Daily global radiation of Cape Town versus hours in October 2013
respectively
Simulation description
Simulation results
Economic analysis
The costs of solar absorption cooling systems are still very high compared
to conventional cooling systems. However, solar absorption cooling
systems present the advantage of saving energy and money in term of
payback.
Assuming that this cooling system is operating 10 hours per day, the
energy save for 10 hours would be 10.5 kW x 10 = 105 kWh. Under the
current Cape Town electricity tariff rate, this cooling system would be
charged:
This means that R18.1944 is save every day, R545.832 every month and
R6549.984 every year.
The average lifetime of the major solar cooling system components are
generally approximated to 20 years [9]. Over this lifetime, the amount of
money save would be R130999.68
Conclusion
Apart from the fact that the price of collectors and absorption cooling
system components are still very high compared to conventional
cooling systems, solar absorption cooling systems represents a
good alternative cooling option.
Due the weather variation, in order the meet the cooling load
requirement, the system must include an additional backup energy
source. For a residential building, adding a backup source of energy
increases the cost of installation and the overall size of the system
compared to conventional cooling units. However, when comparing
both systems in term of the long term running cost, solar absorption
cooling systems present the advantage of saving money and energy.
Reference
[1]
D. M. Tagare, Electric Power Generation: The Changing Dimension, New Jersey: John Wiley &
Sons, 2011.
[2]
V. Mittal, K. Kasana and N. Thakur, The study of solar absorption air-conditioning systems,
Journal of Energy in Southern Africa, vol. 16, no. 4, pp. 59-66, 2005.
[3]
Z. Sayadi, S. El May, M. Bourouis and A. Bellagi, Technical and economic analysis of a solar
assisted air conditioning systems, IEEE Conference, pp. 331-338, 2010.
[4]
Y. Fan, L. Luo and B. Souyri, Review of solar sorption refrigeration technologies: Development
and applications, Renewable and Sustainable Energy Reviews 11, p. 17581775, 2007.
[5]
[6]
[7]
[8]
[9]
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