DL 5 Detailed design of the experimental system MEDESOL-1 to be ...
DL 5 Detailed design of the experimental system MEDESOL-1 to be ...
DL 5 Detailed design of the experimental system MEDESOL-1 to be ...
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Project no.: 036986<br />
Project acronym: <strong>MEDESOL</strong><br />
Project title: Seawater desalination by innovative solarpowered<br />
membrane distillation<br />
Instrument: Specific targeted research project<br />
Thematic Priority: 1.6.3 Global change and eco<strong>system</strong>s<br />
Deliverable reference num<strong>be</strong>r and title<br />
<strong>DL</strong> 5<br />
<strong>Detailed</strong> <strong>design</strong> <strong>of</strong> <strong>the</strong> <strong>experimental</strong> <strong>system</strong> <strong>MEDESOL</strong>-1 <strong>to</strong><br />
<strong>be</strong> implemented for testing above pro<strong>to</strong>types<br />
Due date <strong>of</strong> deliverable: 31.08.2007<br />
Actual submission date: 30.11.2007<br />
Start date <strong>of</strong> project: 01.10.2006<br />
Duration: 36 Months<br />
Organisation name <strong>of</strong> lead contrac<strong>to</strong>r for this deliverable: KTH<br />
Revision [draft, 1, 2, …]: 1 Pages: 23<br />
Project co-funded by <strong>the</strong> European Commission within <strong>the</strong> Sixth Framework<br />
Programme (2002-2006)<br />
Dissemination Level<br />
PU Public YES<br />
PP Restricted <strong>to</strong> o<strong>the</strong>r programme participants (including <strong>the</strong> NO<br />
Commission Services)<br />
RE Restricted <strong>to</strong> a group specified by <strong>the</strong> consortium<br />
NO<br />
(including <strong>the</strong> Commission Services)<br />
CO Confidential, only for mem<strong>be</strong>rs <strong>of</strong> <strong>the</strong> consortium<br />
(including <strong>the</strong> Commission Services)<br />
NO
Foreword<br />
This document was edited within <strong>the</strong> framework <strong>of</strong> <strong>the</strong> <strong>MEDESOL</strong> Project<br />
(“Seawater desalination by Innovative Solar-Powered Membrane Distillation<br />
System”, funded by <strong>the</strong> European Commission within <strong>the</strong> 6 th Framework Programme,<br />
Contract Num<strong>be</strong>r: GOCE 36986, webpage:<br />
http://www.psa.es/we<strong>be</strong>ng/projects/medesol/index.html).<br />
It constitutes a deliverable <strong>of</strong> <strong>the</strong> Project and, in agreement with <strong>the</strong> contract signed<br />
<strong>be</strong>tween <strong>the</strong> European Commission and <strong>the</strong> Spanish government research organization<br />
CIEMAT – Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas<br />
(as project coordina<strong>to</strong>r on <strong>be</strong>half <strong>of</strong> <strong>the</strong> <strong>MEDESOL</strong> consortium), it is a public<br />
document.<br />
An overview <strong>of</strong> <strong>the</strong> project can <strong>be</strong> found at <strong>the</strong> project webpage<br />
(http://www.psa.es/we<strong>be</strong>ng/projects/medesol/overview.html).<br />
Providing <strong>the</strong> information contained in this document <strong>the</strong> consortium hopes <strong>to</strong><br />
contribute <strong>to</strong> <strong>the</strong> progress <strong>of</strong> renewable energy applications, especially regarding solar<br />
desalination.<br />
The consortium also wants <strong>to</strong> acknowledge <strong>the</strong> financial contribution <strong>of</strong> <strong>the</strong><br />
European Commission within <strong>the</strong> above cited research contract.<br />
For fur<strong>the</strong>r information on <strong>the</strong> project please visit <strong>the</strong> webpage<br />
http://www.psa.es/we<strong>be</strong>ng/projects/medesol/index.html or contact with <strong>the</strong><br />
<strong>MEDESOL</strong> consortium by emailing <strong>to</strong> medesol@psa.es<br />
Oc<strong>to</strong><strong>be</strong>r, 2007<br />
The <strong>MEDESOL</strong> consortium<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 3 -
The <strong>MEDESOL</strong> consortium is constituted by <strong>the</strong> following legal entities:<br />
1. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas<br />
Legal address: Avenida Complutense, 22<br />
28040 Madrid, Spain<br />
2. Universidad de La Laguna<br />
Legal address: Calle Molinos de Agua s/n<br />
38207 La Laguna, Spain<br />
3. Acciona Infraestructuras S.A.<br />
Legal address: Avenida de Europa 18 – Parque Empresarial La Moraleja<br />
28108 Alco<strong>be</strong>ndas (Madrid), Spain<br />
4. Aguas de las Cuencas Mediterraneas S.A.<br />
Legal address: C/ Albasanz, 11º<br />
28037 Madrid, Spain<br />
5. Ao Sol Energias Renovaveis, SA<br />
Legal address: Edificio Petrogal, Parque Industrial do Por<strong>to</strong> Al<strong>to</strong>, Lugar de<br />
Sesmaria Limpa, Por<strong>to</strong> Al<strong>to</strong><br />
2135-402 Samora Correia, Portugal<br />
6. Universitaet Stuttgart<br />
Legal address: Keplerstrasse 7<br />
70174 Stuttgart, Germany<br />
7. Tinep S.A. de C.V.<br />
Legal address: Cerro de las Campanas No. 3 Int. 509, Torre B<br />
54040 San Andrés Atenco – Tlalnepa de Baz, Mexico<br />
8. Universidad Nacional Autónoma de México<br />
Legal address: Torre de Rec<strong>to</strong>ría 6 piso, Ciudad Universitaria<br />
04510, Mexico D.F., Mexico<br />
9. Kungliga Tekniska Hoegskolan<br />
Legal address: Valhallavaegen 79<br />
10044 S<strong>to</strong>ckholm, Sweden<br />
10. Scarab Development AB<br />
Legal address: Nybrogatan 12<br />
11439 S<strong>to</strong>ckholm, Sweden<br />
11. Ibérica de Estudios e Ingeniería S.A.<br />
Legal address: Avda. de Burgos 25<br />
28036 Madrid, Spain<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 4 -
Index<br />
1. Introduction 6<br />
2. Functional requirements <strong>of</strong> <strong>the</strong> <strong>MEDESOL</strong>-1 pro<strong>to</strong>type 7<br />
3. P&ID <strong>of</strong> <strong>MEDESOL</strong>-1 9<br />
4. Main <strong>system</strong> compounds description 10<br />
4.1. Membrane Distillation Modules 10<br />
4.2. Solar Collec<strong>to</strong>r field 11<br />
4.3. Heat Exchanger 12<br />
4.4. Air Blower 12<br />
4.5. Tanks 12<br />
5. Design <strong>of</strong> tubing and instrumentation 13<br />
6. Process instrumentation 21<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 5 -
1. Introduction<br />
Within <strong>the</strong> Programme <strong>of</strong> Work <strong>of</strong> <strong>the</strong> <strong>MEDESOL</strong> project one <strong>of</strong> <strong>the</strong> important<br />
miles<strong>to</strong>nes (Miles<strong>to</strong>ne 3, see also project overview on <strong>the</strong> webpage<br />
http://www.psa.es/we<strong>be</strong>ng/projects/medesol/overview.html<br />
and<br />
http://www.psa.es/we<strong>be</strong>ng/projects/medesol/tasks.html) is <strong>the</strong> set-up <strong>of</strong> a test facility,<br />
named <strong>MEDESOL</strong>-1, for <strong>the</strong> testing <strong>of</strong> a multistage membrane distillation plant,<br />
which receives its <strong>the</strong>rmal energy supply through a solar <strong>system</strong>.<br />
This test facility should <strong>be</strong> able <strong>to</strong> incorporate easily new compounds that are <strong>to</strong> <strong>be</strong><br />
<strong>design</strong>ed in different tasks <strong>of</strong> <strong>the</strong> project. The original <strong>design</strong> will incorporate<br />
conventional compounds, which in fur<strong>the</strong>r stages <strong>of</strong> <strong>the</strong> testing programme partly may<br />
<strong>be</strong> replaced by newly developed compounds making use <strong>of</strong> <strong>the</strong> modular concept <strong>of</strong> <strong>the</strong><br />
pro<strong>to</strong>type.<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 6 -
2. Functional requirements <strong>of</strong> <strong>the</strong> <strong>MEDESOL</strong>-1 pro<strong>to</strong>type<br />
The aim is <strong>to</strong> establish a pro<strong>to</strong>type based on membrane distillation with an hourly<br />
distillate production <strong>be</strong>tween 15 and 70 L, depending on <strong>the</strong> operation conditions. The<br />
<strong>system</strong> set-up shall <strong>be</strong> done in such a way, that later exchange <strong>of</strong> single components is<br />
easy.<br />
The <strong>system</strong> has <strong>to</strong> consist <strong>of</strong> four hydraulic circuits, which may <strong>be</strong> interconnected<br />
• Solar circuit: contains a heat transfer fluid<br />
• Membrane distillation hot side circuit: contains <strong>the</strong> fluid, which is <strong>to</strong> <strong>be</strong><br />
distilled<br />
• Membrane distillation cold side circuit: <strong>the</strong> fluid serves <strong>to</strong> cool <strong>the</strong><br />
condensation surface <strong>to</strong> obtain <strong>the</strong> distillate.<br />
• Distillate circuit: The product flow <strong>of</strong> <strong>the</strong> <strong>system</strong><br />
The main technical components <strong>of</strong> <strong>the</strong> <strong>system</strong> are<br />
• 3 membrane distillation modules based on air-gap membrane distillation<br />
• Solar field based on compound parabolic collec<strong>to</strong>rs<br />
• Heat Exchanger hot side/ solar field <strong>to</strong> transfer <strong>the</strong> heat from <strong>the</strong> solar field <strong>to</strong><br />
<strong>the</strong> fluid <strong>to</strong> <strong>be</strong> distilled<br />
• Air Blower <strong>to</strong> cool cold side (for initial tests, in later stages heat should <strong>be</strong><br />
recovered)<br />
• Standard compounds such as tanks, pumps etc.<br />
• SCADA (supervisory control & data acquisition) <strong>system</strong><br />
The data obtained during <strong>the</strong> testing <strong>of</strong> <strong>the</strong> <strong>MEDESOL</strong>-1 pro<strong>to</strong>type shall enable <strong>the</strong><br />
assessment <strong>of</strong> <strong>the</strong> technology’s potential regarding <strong>the</strong> following issues:<br />
• Thermal efficiency <strong>of</strong> <strong>the</strong> <strong>system</strong><br />
• Operation and maintenance requirements<br />
• Process control requirements<br />
• Potential and needs for stand-alone operation<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 7 -
• Mechanical stability <strong>of</strong> heat exchanger’s non-fouling surface coatings during<br />
operation in pilot-plant<br />
• Environmental impact<br />
• Possibilities for technology up-scaling<br />
Additionally <strong>to</strong> pure assessment <strong>of</strong> <strong>the</strong> technology as a whole <strong>the</strong> <strong>MEDESOL</strong>-1<br />
pro<strong>to</strong>type should also enable <strong>the</strong> project consortium <strong>to</strong> identify possible improvements<br />
<strong>to</strong> <strong>the</strong> technology as a whole as well as <strong>to</strong> <strong>the</strong> single <strong>system</strong> components tested (<strong>the</strong>se<br />
are partly newly developed in <strong>the</strong> course <strong>of</strong> <strong>the</strong> project in <strong>the</strong> execution <strong>of</strong> work<br />
package 2).<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 8 -
3. P&ID <strong>of</strong> <strong>MEDESOL</strong>-1<br />
Hot water<br />
Cold water<br />
Distillate<br />
Sea Water<br />
TDE17<br />
TE17a<br />
TE15<br />
TDE13<br />
TE11<br />
TE13a<br />
TDE02<br />
TE02a<br />
TE05<br />
PT01<br />
PCV01<br />
TI01<br />
CT02<br />
TE18a<br />
L02-DN 1"<br />
TI02<br />
PCV02<br />
PT02<br />
TE17b<br />
MD03<br />
TE13b<br />
MD02<br />
TE14a<br />
TE02b<br />
MD01<br />
TE03a<br />
TE19<br />
FT01<br />
2-60 L/min<br />
TE10<br />
TE01a<br />
TE04a<br />
L002-DN65<br />
HXC01<br />
Air<br />
Blower<br />
FT02<br />
2-60L/h<br />
L05-DN 1"<br />
L06-DN 1"<br />
TE16<br />
TE18b<br />
TDE18<br />
TE14a<br />
TE12<br />
TE09<br />
L08-DN 1"<br />
TDE14<br />
TE07<br />
TE03b<br />
TDE03<br />
TDE01<br />
L01-DN 1"<br />
TE01b<br />
HXC02<br />
TE04b<br />
TDE04<br />
P01<br />
3.7 kW<br />
10-50L/min<br />
Max. 50Hz<br />
Min. 0Hz<br />
FT001<br />
TE001<br />
L001-DN65<br />
CPC<br />
(AQUASOL)<br />
LT02<br />
LSL02<br />
CT01<br />
FT03<br />
2-70L/h<br />
LT01<br />
LSL01<br />
YE001<br />
P03<br />
2KW<br />
5-60L/min<br />
ALARM<br />
SC02<br />
T2<br />
Cold Water Tank<br />
Vmax. 2000L<br />
Vmin. 100L<br />
Flow 20L/min<br />
LV01<br />
LV02<br />
Distillate<br />
Production<br />
T1<br />
Hot Water Tank<br />
Vmax. 2000L<br />
Vmin. 100L<br />
Flow 20L/min<br />
ALARM<br />
SC01<br />
TAMB<br />
L05-DN 1"<br />
TE06<br />
L07-DN 1”<br />
TE08<br />
P04<br />
0.6 kW<br />
10L/min<br />
FI<br />
FI01<br />
L01-DN 1"<br />
P02<br />
2 kW<br />
5-60L/min<br />
LV03<br />
LV04<br />
Sea water<br />
reservoir<br />
DISTRIBUCIÓN DE INSTRUMENTOS<br />
PROYECTO <strong>MEDESOL</strong><br />
CHEKING DATE<br />
18/06/2007<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 9 -
A list with <strong>the</strong> details and nomenclature <strong>of</strong> <strong>the</strong> sensors can <strong>be</strong> found in section 6<br />
(process instrumentation)<br />
4. Main <strong>system</strong> components description<br />
The main <strong>system</strong> components are <strong>the</strong> following (see also P&I in section 3):<br />
- Membrane distillation modules<br />
- Solar collec<strong>to</strong>r field<br />
- Heat exchanger<br />
- Air blower<br />
- Elements <strong>of</strong> <strong>the</strong> hydraulic circuit such as pump, tanks, tubing<br />
- Instrumentation related <strong>to</strong> mass and energy balance (temperature & flow<br />
measurements)<br />
- Auxiliary instrumentation (pressure, conductivity, etc.)<br />
- SCADA s<strong>of</strong>tware (supervisory control & data acquisition)<br />
Some <strong>of</strong> <strong>the</strong>se components are descri<strong>be</strong>d in <strong>the</strong> following.<br />
4.1 Membrane distillation modules<br />
Three membrane distillation modules (MD01, MD02 & MD03 in <strong>the</strong> P&ID in section<br />
3) are provided by Scarab Development AB (www.scarab.se). These modules are based<br />
on air-gap membrane distillation technology. Each <strong>of</strong> <strong>the</strong>m has 2.8 m 2 membrane area<br />
and a distilled water production capacity <strong>of</strong> 5 – 10 L·m -2·h -1 . A pho<strong>to</strong> <strong>of</strong> one <strong>of</strong> <strong>the</strong><br />
modules <strong>be</strong>fore installation is shown in Figure 1. The modules are descri<strong>be</strong>d in detail in<br />
<strong>the</strong> internal report <strong>MEDESOL</strong>_T110_SCARAB_01 published in <strong>the</strong> private section <strong>of</strong><br />
<strong>the</strong> project webpage<br />
(http://www.psa.es/we<strong>be</strong>ng/projects/medesol/private/documents/<strong>MEDESOL</strong>_T110_SCA<br />
RAB_01.doc).<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 10 -
Drawing 8: Description MD module (MD01, MD02, MD03)<br />
Connection for tubing<br />
Figure 1: Membrane distillation module<br />
4.2 Solar Collec<strong>to</strong>r field<br />
The solar collec<strong>to</strong>r field (CPC (Aquasol) in <strong>the</strong> P&ID in section 3) consists <strong>of</strong> 252<br />
Compound Parabolic Collec<strong>to</strong>rs (CPC, type: AO SOL 1.12x 1 ). Each <strong>of</strong> <strong>the</strong>m has a<br />
surface <strong>of</strong> nearly 2 m 2 , which sums up <strong>to</strong> a <strong>to</strong>tal collec<strong>to</strong>r field size <strong>of</strong> 499 m 2 . The 252<br />
collec<strong>to</strong>rs are arranged in 4 parallel flow lines each consisting <strong>of</strong> 63 collec<strong>to</strong>rs. Only one<br />
<strong>of</strong> <strong>the</strong>se lines will <strong>be</strong> used (i.e. 125 m 2 ), <strong>be</strong>cause <strong>the</strong> <strong>the</strong>rmal necessities <strong>of</strong> <strong>MEDESOL</strong>-<br />
1 are lesser than <strong>the</strong> maximum <strong>the</strong>rmal input from <strong>the</strong> solar field possible<br />
(approximately <strong>the</strong> <strong>the</strong>rmal capacity <strong>of</strong> <strong>the</strong> entire solar field is about 200 kW). Each <strong>of</strong><br />
<strong>the</strong>se lines is in turn divided in<strong>to</strong> 7 groups <strong>of</strong> 9 collec<strong>to</strong>rs each, which can <strong>be</strong> included or<br />
excluded separately from <strong>the</strong> hydraulic circuit. Consequently, <strong>the</strong> size <strong>of</strong> <strong>the</strong> solar field<br />
and <strong>the</strong>reby <strong>the</strong> <strong>the</strong>rmal power input used under operation can <strong>be</strong> varied comprising 9,<br />
18, 27, 36, 45, 54 or 63 collec<strong>to</strong>rs.<br />
1 Collares-Pereira M., Carvalho M.J., Farinha Mendes J.,Oliveira J.,Ha<strong>be</strong>rle A.,Wittwer V.(1995). Optical<br />
and Thermal Testing <strong>of</strong> a new 1.12X CPC Solar Collec<strong>to</strong>r Solar Energy Materials, and Solar Cells, 37,<br />
175-190.<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 11 -
Figure 2 shows a scheme <strong>of</strong> <strong>the</strong> cross section <strong>of</strong> <strong>the</strong> CPC collec<strong>to</strong>r. This collec<strong>to</strong>r is not<br />
optimized for <strong>the</strong> operation temperatures <strong>to</strong> <strong>be</strong> used in <strong>the</strong> <strong>MEDESOL</strong>-1 pro<strong>to</strong>type, but<br />
it is used due <strong>to</strong> its availability at Plataforma Solar de Almeria. In parallel a new<br />
collec<strong>to</strong>r is developed by AoSol within <strong>the</strong> scope <strong>of</strong> work package 2, which will <strong>be</strong><br />
employed in <strong>the</strong> subsequent pro<strong>to</strong>type <strong>to</strong> <strong>be</strong> built in <strong>the</strong> project (<strong>MEDESOL</strong>-2, see<br />
http://www.psa.es/we<strong>be</strong>ng/projects/medesol/tasks.html).<br />
Figure 2: Cross Section <strong>of</strong> CPC collec<strong>to</strong>r<br />
4.3 Heat exchanger<br />
The plate heat exchanger (HXC02 in <strong>the</strong> P&ID in section 3, effective surface area 1.2<br />
m 2 ) was supplied by <strong>the</strong> company HRS (series HRSPC). The plates are made <strong>of</strong><br />
titanium. After acquisition <strong>of</strong> <strong>the</strong> heat exchanger <strong>to</strong> <strong>the</strong> company, a special coating <strong>to</strong><br />
reduce fouling and scaling tested within work package 2 by <strong>the</strong> University <strong>of</strong> Stuttgart<br />
was applied <strong>to</strong> <strong>the</strong> plates. Additional information on heat exchanger and <strong>the</strong> coating is<br />
contained in <strong>the</strong> document <strong>MEDESOL</strong>-<strong>DL</strong>4-USTUT-ITW-01<br />
(http://www.psa.es/we<strong>be</strong>ng/projects/medesol/private/documents/<strong>MEDESOL</strong>_<strong>DL</strong>4_UST<br />
UT_ITW_01.doc).<br />
4.4 Air blower<br />
Of course it is clear that air cooling is not an optimized option regarding <strong>the</strong>rmal<br />
efficiency <strong>of</strong> <strong>the</strong> <strong>system</strong>. Hence, <strong>the</strong> air blower (HXC01 in <strong>the</strong> P&ID in section 3) will<br />
<strong>be</strong> used exclusively, when experiments at constant low temperature in <strong>the</strong> refrigeration<br />
cycle will <strong>be</strong> performed. This may especially <strong>be</strong> <strong>the</strong> case <strong>of</strong> membrane distillation<br />
modules characterization .<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 12 -
The air blower consists <strong>of</strong> three horizontal fans, each with a diameter <strong>of</strong> approximately<br />
700 mm. A technical drawing <strong>of</strong> <strong>the</strong> air blower can <strong>be</strong> found in Figure 3.<br />
3 m<br />
1000<br />
1<br />
mm<br />
m<br />
1,15 m<br />
Figure 3: Technical drawing <strong>of</strong> air blower<br />
4.5 Tanks<br />
The tanks are tailor-made <strong>of</strong> polypropylene (high density, T01 and T02 in <strong>the</strong> P&ID in<br />
section 3). The tanks are <strong>of</strong> cubic shape (2 m high, base 1x1 m, <strong>to</strong>tal volume 2 m 3 ).<br />
They are reinforced with steel rings for enhanced mechanical stability and <strong>the</strong>rmally<br />
insulated with polyurethane foam and glass fi<strong>be</strong>r.<br />
5. Design <strong>of</strong> tubing and instrumentation<br />
Figure 4 shows <strong>the</strong> area, where most <strong>of</strong> <strong>the</strong> components <strong>of</strong> <strong>the</strong> <strong>MEDESOL</strong>-1 <strong>system</strong><br />
will <strong>be</strong> mounted. On <strong>the</strong> left <strong>the</strong>re is a general overview <strong>of</strong> <strong>the</strong> area, where <strong>the</strong> shed<br />
(dimension N-S: 6 m, E-W: 5 m) is shown. Also in <strong>the</strong> front <strong>of</strong> <strong>the</strong> picture <strong>the</strong> tubing <strong>to</strong><br />
and from <strong>the</strong> solar field can <strong>be</strong> seen and on <strong>the</strong> left one can see <strong>the</strong> air blower (blue and<br />
white). On <strong>the</strong> right a pho<strong>to</strong> from <strong>the</strong> inside <strong>of</strong> <strong>the</strong> shed is shown, where one can<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 13 -
ecognize that <strong>the</strong>re is a second floor in <strong>the</strong> nor<strong>the</strong>rn half <strong>of</strong> <strong>the</strong> shed (ground area<br />
5x3 m).<br />
Figure 5 is a floor plan <strong>of</strong> <strong>the</strong> area showing <strong>the</strong> principal components and <strong>the</strong> shed,<br />
including a scale <strong>to</strong> <strong>be</strong> taken in<strong>to</strong> account for <strong>the</strong> subsequent drawings.<br />
Figure 4: Pho<strong>to</strong>s <strong>of</strong> <strong>the</strong> area and shed, where most <strong>of</strong> <strong>MEDESOL</strong>-1 components will <strong>be</strong><br />
mounted. Both views are taken from direction south-west.<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 14 -
Top View <strong>of</strong> pro<strong>to</strong>type <strong>MEDESOL</strong>-1<br />
(real scale, 1:50 on A3)<br />
N<br />
0 m 1 m 2 m 3 m 4 m 5 m<br />
W<br />
E<br />
S<br />
From<br />
AQUASOL<br />
tanks<br />
To<br />
AQUASOL<br />
tanks<br />
From<br />
seawater<br />
tank<br />
To<br />
seawater<br />
tank<br />
MD<br />
01<br />
MD<br />
02<br />
MD<br />
03<br />
Vertical tubing<br />
P01<br />
P04<br />
HXC01<br />
T2<br />
T1<br />
P03<br />
P02<br />
HXC02<br />
Control<br />
board<br />
Figure 5: Floor plan <strong>of</strong> tubing and principal <strong>system</strong> components<br />
From<br />
solar field<br />
To solar<br />
field<br />
Generally speaking, <strong>the</strong> plant consists mainly <strong>of</strong> 3 hydraulic circuits:<br />
1) Solar collec<strong>to</strong>r circuit<br />
2) MD hot water circuit<br />
3) MD cold water circuit<br />
4) Air Blower circuit<br />
The solar collec<strong>to</strong>r circuit consists <strong>of</strong> carbon steel tubing, whereas <strong>the</strong> solar collec<strong>to</strong>rs<br />
<strong>the</strong>mselves have copper tubing for <strong>the</strong> optimization <strong>of</strong> <strong>the</strong> heat transfer. MD hot and<br />
cold water circuits (containing <strong>the</strong> elements P02, P03, HXC01, HXC02, T1 and T2)<br />
have stainless steel tubing (1” I.D., AISI316L). The tubing <strong>of</strong> all <strong>the</strong> three hydraulic<br />
circuits will <strong>be</strong> <strong>the</strong>rmally insulated (mineral wool in aluminum coating). The only<br />
exceptions will <strong>be</strong> <strong>the</strong> direct connections <strong>be</strong>tween <strong>the</strong> MD modules, which are made <strong>of</strong><br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 15 -
flexible hoses made <strong>of</strong> a polymer that are also <strong>the</strong>rmally insulated. These connections<br />
can <strong>be</strong> easily adjusted and changed. Hence, <strong>the</strong> overall connection scheme <strong>be</strong>tween <strong>the</strong><br />
MD modules can <strong>be</strong> changed easily and different set-ups can <strong>be</strong> tested.<br />
The tubing connecting at <strong>the</strong> north side <strong>of</strong> <strong>the</strong> tanks (connecting <strong>to</strong> <strong>the</strong> seawater pool) is<br />
made <strong>of</strong> PVC and does not need <strong>the</strong>rmal insulation.<br />
The cold water circuit is connected with <strong>the</strong> air blower by means <strong>of</strong> <strong>the</strong> same type <strong>of</strong><br />
tubing used in both cold and hot circuits (stainless steel tubing 1” I.D., AISI316L).<br />
Figures 6 and 7 show views <strong>of</strong> <strong>the</strong> tanks and <strong>the</strong> surrounding tubing and pumps from <strong>the</strong><br />
south and <strong>the</strong> north, respectively.<br />
Figure 6: Tanks, view from <strong>the</strong> south.<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 16 -
Figure 7: Tanks, view from <strong>the</strong> north.<br />
Figure 8: Top View <strong>of</strong> air cooler valves.<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 17 -
Figure 8 shows a <strong>to</strong>p view <strong>of</strong> <strong>the</strong> connection <strong>be</strong>tween <strong>the</strong> air cooler and <strong>the</strong> <strong>system</strong>,<br />
whereas Figure 9 shows an isometric view <strong>of</strong> <strong>the</strong> same area. The connection with <strong>the</strong><br />
solar field allows performing a series <strong>of</strong> different operations <strong>to</strong> <strong>be</strong> done with <strong>the</strong> air<br />
cooler, such as refrigerating <strong>the</strong> solar collec<strong>to</strong>r field for instance.<br />
Figure 9: 3-dim. view <strong>of</strong> air cooler valves.<br />
Figure 10 shows <strong>the</strong> connection <strong>to</strong> <strong>the</strong> process <strong>of</strong> <strong>the</strong> heat exchanger transferring <strong>the</strong><br />
heat <strong>of</strong> <strong>the</strong> solar collec<strong>to</strong>r hydraulic circuit <strong>to</strong> <strong>the</strong> hot side hydraulic circuit <strong>of</strong> <strong>the</strong> MD<br />
modules (P02, T01, see also section 3 P&ID and Figure 5).<br />
Figure 10: 3-dim. View <strong>of</strong> heat exchanger connection <strong>to</strong> <strong>the</strong> process (HXC02).<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 18 -
Figure 11 shows <strong>the</strong> piping inside <strong>the</strong> shed from ground level up <strong>to</strong> <strong>the</strong> second floor. In<br />
this region, <strong>the</strong> pipe will <strong>be</strong> made <strong>of</strong> stainless steel. The layout respects <strong>the</strong> straight<br />
stretches around <strong>the</strong> electromagnetic flow meters (FT01 and FT02) and <strong>the</strong>ir respective<br />
narrowing in <strong>the</strong> pipe.<br />
Finally, Figure 12 shows <strong>the</strong> position and instrumentation <strong>of</strong> <strong>the</strong> MD modules (drawings<br />
and pho<strong>to</strong>s in Figure 1) on <strong>the</strong> second floor <strong>of</strong> <strong>the</strong> shed. Putting <strong>the</strong> modules at <strong>the</strong><br />
second floor will generate <strong>the</strong> pressure required <strong>to</strong> operate <strong>the</strong> flow-meter FT03, which<br />
has a similar mechanism <strong>of</strong> a turbine flow meter. As indicated 6 <strong>the</strong>rmocouples are<br />
connected <strong>to</strong> each MD module in a fixed way.<br />
The flexible piping, which connects <strong>the</strong> modules (an example <strong>of</strong> connection is shown in<br />
section 3), is not depicted in Figure 12. As stated earlier flexible hoses are needed in this<br />
area <strong>to</strong> <strong>be</strong> able <strong>to</strong> connect <strong>the</strong> modules easily in different configurations. These flexible<br />
hoses are <strong>the</strong>rmally insulated.<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 19 -
Drawing 7: Flowmeters etc., vertical part <strong>of</strong> tubing <strong>to</strong> 2nd<br />
floor <strong>of</strong> shed<br />
W<br />
S<br />
N<br />
E<br />
PT02<br />
Height 350 cm<br />
(2nd floor <strong>of</strong><br />
shed )<br />
PT01<br />
Open tu<strong>be</strong> for<br />
deaeration<br />
Height approx.<br />
250 cm<br />
To T02<br />
(drawing 1)<br />
To T01<br />
(drawing 1)<br />
Height approx.<br />
150 cm<br />
PCV02<br />
PCV01<br />
TI02<br />
TI01<br />
FT03<br />
Height approx.<br />
50 cm<br />
CT02<br />
CT01<br />
To seawater<br />
reservoir<br />
(drawing 2)<br />
sample<br />
sample<br />
TE09<br />
sample<br />
FT02<br />
FT01<br />
From HXC01<br />
(drawing 6)<br />
From HXC02<br />
(drawing 4)<br />
Figure 11: Piping in <strong>the</strong> interior <strong>of</strong> <strong>the</strong> shed.<br />
Drawing 9: MD modules (MD01, MD02, MD03), 2nd floor <strong>of</strong> shed<br />
W<br />
N<br />
E<br />
TE03a<br />
TE14a<br />
TE18a<br />
S<br />
TE05<br />
TE02a<br />
MD01<br />
TE02b<br />
TE11<br />
TE13a<br />
MD02<br />
TE13b<br />
TE15<br />
TE17a<br />
MD03<br />
TE17b<br />
TE03b<br />
TE07<br />
TE14b<br />
TE12<br />
TE18b<br />
TE16<br />
Figure 12: MD modules and corresponding instrumentation.<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 20 -
6. Process instrumentation<br />
Tables 1 and 2 show a list <strong>of</strong> sensors and components applied for instrumentation. Table<br />
1 contains conductivity transmitters (CTxx), flow indica<strong>to</strong>rs (FIxx), flow transmitters<br />
(FTxx), level alarms (LSLxx), level transmitters (LTxx), electrovalves (LVxx), pumps<br />
(Pxx), pressure control valves (PCVxx), pressure transmitters (PTxx), speed controllers<br />
acting on <strong>the</strong> pumps (SCxx) and a radiometer <strong>to</strong> measure <strong>the</strong> solar radiation (YE001).<br />
Table 1: Main instrumentation <strong>of</strong> <strong>MEDESOL</strong>-1 pro<strong>to</strong>type excluding temperature<br />
measurement. Company names are underlined. E+H stands for Endress+Hauser. Yellow<br />
sensors exist from former facilities, all o<strong>the</strong>rs are newly installed.<br />
TAG Model Description<br />
CT01 WTW: LRD 01-7 with controller LF296 distillate conductivity transmitter<br />
CT02 WTW: LRD 325-7 with controller LF296 MD hot side, conductivity transmitter<br />
FI01<br />
Rotameter, 2-20L/min<br />
FT001<br />
Flow transmitter - solar field<br />
FT01 E+H: 50P15-EA0A1AA0BBAW -- PROMAG 50P DN 15 (1/2") Flow transmitter, MD hot side<br />
FT02 E+H: 50P15-EA0A1AA0BBAW -- PROMAG 50P DN 15 (1/2") Flow transmitter, MD cold side<br />
FT03 BIOTECH: 96103101, FCH-m-POM-G 1/8" Distillate flow<br />
LSL01 Filsa: MH INOX 2605-1 Level alarm, hot tank<br />
LSL02 Filsa: MH INOX 2605-1 Level alarm, cold tank<br />
LT01 E+H: Deltabar S PMD75-ABB7FB1DCVU Level transmitter, hot tank<br />
LT02 E+H: Deltabar S PMD75-ABB7FB1DCVU Level transmitter, cold tank<br />
LV01<br />
Electrovalve, 24VAC<br />
LV02<br />
Electrovalve, 24VAC<br />
LV03<br />
Electrovalve, 24VAC<br />
LV04<br />
Electrovalve, 24VAC<br />
P01<br />
Pump - solar field<br />
P02 Tellarini Pompe: 380V pump: AL30, 2kW MD hot side, pump<br />
P03 Tellarini Pompe: 380V pump: AL30, 2kW MD cold side, pump<br />
P04 Tellarini Pompe: 380V pump: AL25, 0.6kW Make-up pump<br />
PCV01 Samson: Type 44-1B DN 1/2 PN25 MD hot side, pressure reduction valve<br />
PCV02 Samson: Type 44-1B DN 1/2 PN25 MD cold side, pressure reduction valve<br />
PT01 E+H: Cerabar PMP41-RE23HCJ11M1 MD hot side pressure transmitter<br />
PT02 E+H: Cerabar PMP41-RE23HCJ11M1 MD cold side pressure transmitter<br />
SC01 Mitsubishi: FR-S540-E2,2 Speed controller <strong>to</strong> act on P02<br />
SC02 Mitsubishi: FR-S540-E2,2 Speed controller <strong>to</strong> act on P03<br />
YE001 Kipp + Zonen: CMP11 Radiometer (Pyranometer)<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 21 -
Table 2: Temperature measurement in <strong>the</strong> <strong>MEDESOL</strong>-1 pro<strong>to</strong>type. Yellow sensors<br />
exist from former facilities, all o<strong>the</strong>rs are newly installed.<br />
TAG Sensor Model Description<br />
TDE01 TE01a E+H: TSC310-YYXJ998J HXC02: Hot side, diff. T<br />
TE01b E+H: TSC310-YYXJ998J<br />
TDE02 TE02a E+H: TSC310-YYXJ998J MD01: Hot side, diff. T<br />
TE02b E+H: TSC310-YYXJ998J<br />
TDE03 TE03a E+H: TSC310-YYXJ998J MD01: Cold side, diff. T<br />
TE03b E+H: TSC310-YYXJ998J<br />
TDE04 TE04a E+H: TSC310-YYXJ998J HXC02: Cold side, diff. T<br />
TE04b E+H: TSC310-YYXJ998J<br />
TDE13 TE13a E+H: TSC310-YYXJ998J MD02: Hot side, diff. T<br />
TE13b E+H: TSC310-YYXJ998J<br />
TDE14 TE14a E+H: TSC310-YYXJ998J MD02: Cold side, diff. T<br />
TE14b E+H: TSC310-YYXJ998J<br />
TDE17 TE17a E+H: TSC310-YYXJ998J MD03: Hot side, diff. T<br />
TE17b E+H: TSC310-YYXJ998J<br />
TDE18 TE18a E+H: TSC310-YYXJ998J MD03: Cold side, diff. T<br />
TE18b E+H: TSC310-YYXJ998J<br />
TE001<br />
Solar field inlet temperature<br />
TE05 TE05 E+H: TC12-AEA2RXCY1000 MD01: Hot side, abs. T<br />
TE06 TE06 E+H: TC12-AEA2RXCY1001 T2: Outlet, abs. T<br />
TE07 TE07 E+H: TC12-AEA2RXCY1002 MD01: Cold side, abs. T<br />
TE08 TE08 E+H: TC12-AEA2RXCY1003 T1: Make-up inlet, abs. T<br />
TE09 TE09 E+H: TC12-AEA2RXCY1004 Product (distilled water), abs. T<br />
TE10 TE10 E+H: TC12-AEA2RXCY1005 HXC02: Hot side, abs. T<br />
TE11 TE11 E+H: TC12-AEA2RXCY1006 MD02: Hot side, abs. T<br />
TE12 TE12 E+H: TC12-AEA2RXCY1007 MD02: Cold side, abs. T<br />
TE15 TE15 E+H: TC12-AEA2RXCY1008 MD03: Hot side, abs. T<br />
TE16 TE16 E+H: TC12-AEA2RXCY1009 MD03: Cold side, abs. T<br />
TE19 TE19 E+H: TC12-AEA2RXCY1010 HXC02: Cold side, abs. T<br />
TI01 TI01 WIKA: S5412 with sheath SO500G MD hot side, T indica<strong>to</strong>r<br />
TI02 TI02 WIKA: S5412 with sheath SO500G MD cold side, T indica<strong>to</strong>r<br />
TAMB Ambient temperature sensor<br />
Table 2 shows <strong>the</strong> temperature measurement devices employed in <strong>MEDESOL</strong>-1. Two<br />
different temperature measurements based on <strong>the</strong>rmocouples are implemented; first,<br />
absolute temperature measurement with <strong>the</strong>rmocouples <strong>of</strong> T-type (Tags: TExx), second,<br />
differential temperature measurement based on <strong>the</strong> voltage difference <strong>of</strong> two<br />
<strong>the</strong>rmocouples <strong>of</strong> E-type (Tags: TDExx). Hence, each differential temperature<br />
measurement needs two <strong>the</strong>rmocouples, i.e. sensors. This means that e.g. <strong>the</strong> differential<br />
temperature measurement TDE01, consists <strong>of</strong> <strong>the</strong> two sensors TE01a and TE01b (confer<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 22 -
P&ID in section 3 and all <strong>the</strong> former drawings in section 5). Fur<strong>the</strong>rmore Table 2<br />
indicates field temperature indica<strong>to</strong>rs (TIxx) and an ambient temperature sensor<br />
(TAMB).<br />
All signals <strong>of</strong> <strong>the</strong> temperature measurement by <strong>the</strong>rmocouples will <strong>be</strong> collected by a<br />
MOBREY IMP 3595-1C data acquisition module. O<strong>the</strong>r analogue and digital I/O<br />
signals will <strong>be</strong> processed by modules <strong>of</strong> <strong>the</strong> ADAM Advantech series 4000 (models<br />
4017+, 4024, 4055 for signal processing and 4520 for RS232/RS485 conversion).<br />
Control strategies will <strong>be</strong> developed in Task 340, but so far it can <strong>be</strong> said, that high<br />
pressure alarms and routines for a smooth start <strong>of</strong> <strong>the</strong> pump will <strong>be</strong> included.<br />
Supervisory control and data acquisition application (SCADA) are in-house<br />
programmed at Plataforma Solar de Almeria in LabVIEW programming environment.<br />
<strong>MEDESOL</strong>-<strong>DL</strong>5-KTH-01 - 23 -