The heating process of melting margarine requires a vast amount of thermal energy due to its high melting point and the size of the reservoir it is contained in. Existing methods to heat margarine have a high hourly cost of production and use fossil fuels which have been shown to have a negative impact on the environment. Thus, we perform an analytical feasibility study of using solar thermal power as an alternative energy source for the margarine melting process. In this study, the efficiency and cost effectiveness of a parabolic trough collector (PTC) solar field are compared with that of a steam boiler. Different working fluids (water vapor and Therminol-VP1 heat transfer oil (HTO)) through the solar field are also investigated. The results reveal the total hourly cost ($/h) by the conventional configuration is much greater than the solar applications regardless of the type of working fluid. Moreover, the conventional configuration causes a negative impact to the environment by increasing the amount of CO2, CO, and NO2 by 117.4 kg/day, 184 kg/day, and 74.7 kg/day, respectively. Optimized period of melt and tank volume parameters at temperature differences not exceeding 25 °C are found to be 8–10 h and 100 m3, respectively. The solar PTC operated with water and steam as the working fluid is recommended as a vital alternative for the margarine melting heating process.

References

References
1.
Eskin
,
N.
,
2000
, “
Performance Analysis of a Solar Process Heat System
,”
Energy Convers. Manage.
,
41
(11)
, pp.
1141
1154
.10.1016/S0196-8904(99)00165-X
2.
Kalogirou
,
S.
,
2004
, “
Solar Thermal Collectors and Applications
,”
Prog. Energy Combust. Sci.
,
30
(3)
, pp.
231
295
.10.1016/j.pecs.2004.02.001
3.
Kalogirou
,
S.
,
2003
,“
The Potential of Solar Industrial Process Heat Applications
,”
Appl. Energy
,
76
(4)
, pp.
337
361
.10.1016/S0306-2619(02)00176-9
4.
Kalogirou
,
S. A.
,
2002
, “
Parabolic Trough Collectors for Industrial Process Heat in Cyprus
,”
Energy
,
27
(9)
, pp.
813
830
.10.1016/S0360-5442(02)00018-X
5.
Quijera
,
J. A.
,
Alriols
,
M. G.
, and
Labidi
,
J.
,
2011
, “
Integration of a Solar Thermal System in a Dairy Process
,”
Renewable Energy
,
36
(6)
, pp.
1843
1853
.10.1016/j.renene.2010.11.029
6.
Schnitzer
,
H.
,
Brunner
,
C.
, and
Gwehenberger
,
G.
,
2007
, “
Minimizing Greenhouse Gas Emissions Through the Application of Solar Thermal Energy in Industrial Processes
,”
J. Cleaner Prod.
,
15
(13–14)
, pp.
1271
1286
.10.1016/j.jclepro.2006.07.023
7.
Therminol Heat Transfer Fluids, Safety Data Sheets (SDS), www.therminol.com
8.
Eldean
,
M. A. S.
,
2011
, “
Design and Simulation of Solar Desalination Systems
,” Ph.D. thesis, Suez Canal University, Suez, Egypt.
9.
Nafey
,
A. S.
,
Sharaf
,
M. A.
, and
García-Rodríguez
,
L.
,
2010
, “
A New Visual Library for Design and Simulation of Solar Desalination Systems (SDS)
,”
Desalination
,
259
(1–3)
, pp.
197
207
.10.1016/j.desal.2010.04.005
10.
Sharaf
,
M. A.
,
Nafey
,
A. S.
, and
García-Rodríguez
,
L.
,
2011
, “
Exergy and Thermo-Economic Analyses of a Combined Solar Organic Cycle With Multi Effect Distillation (MED) Desalination Process
,”
Desalination
,
272
(1–3)
, pp.
135
147
.10.1016/j.desal.2011.01.006
11.
Sharaf
,
M. A.
,
Nafey
,
A. S.
, and
García-Rodríguez
,
L.
,
2011
, “
Thermo-Economic Analysis of Solar Thermal Power Cycles Assisted MED-VC (Multi Effect Distillation-Vapor Compression) Desalination Processes
,”
Energy
,
36
(5)
, pp.
2753
2764
.10.1016/j.energy.2011.02.015
12.
Blanco
,
J.
,
2003
, “
Technical Comparison of Different Solar-Assisted Heat Supply Systems for a Multi-Effect Seawater Distillation Unit
,” ISES Solar World Congress, Göteborg, Sweden, June 14–19.
13.
Eldean
,
M. A. S.
, and
Fath
,
H. E.
,
2013
, “
Exergy and Thermo-Economic Analysis of Solar Thermal Cycles Powered Multi-Stage Flash Desalination Process
,”
Desalin. Water Treat.
,
51
(40–42)
, pp.
7361
7378
.10.1080/19443994.2013.775670
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