Kloben SKY 8 CPC 58, SKY 12 CPC 58, SKY 18 CPC 58, SKY 21 CPC 58 User Manual

SOLAR HEATING SYSTEMS
FORCED CIRCULATION
Vacuumm collectors
SKY 8 CPC 58 SKY 12 CPC 58 SKY 18 CPC 58 SKY 21 CPC 58
Reg. no. 011-7S124R
2
MAKING USE OF SOLAR ENERGY
Solar energy is among the most abundant and available free renewable energies on the earth’s surface. To have an idea of the energy that the sun radiates onto the earth, according to the latitude, the average daily solar radiation in Italy varies from 4 to 5.5 kWh on a surface of 1 square metre. The use of a solar heat collector with vacuum technology is accredited, as shown by the experts in the solar sector and by laboratory tests carried out according to EN European Standards, to be the most technically efficient system for captu­ring the energy released by the sun through the entire year. Considering the daily heat energy request per person for domestic hot water use, the use of solar collectors with vacuum technology with CPC reflector, combined with a standard state-of-the-art designed system, allows energy saving regarding domestic hot water of up to 80%. While, considering the global load of heat energy requested for domestic hot water and heating, the total saving can exceed 40%. This considerable energy saving constitutes an important contribution to the reduction of the emissions of noxious substances, deriving from combustion, into the atmosphere and particularly to the reduction of CO2, the main reason for environmental heating due to the greenhouse effect. The functioning principle of a solar heating system can be described simply. The solar vacuum collector with CPC reflector captures solar radiation and heats up. The heat gathered is transferred by heat exchage to a water tank, which acts as a storage tank. The amount of solar energy that the collector can transfer to the tank depends on its capacity to absorb solar radiation and on the level of insulation, which reduces the loss of energy captured by the collector. The creation of the vacuum by removing the air from the gap in the glass tube achieves a layer of the best heat insulating material existing in nature. The principle has been known about for a century and is appreciated in the form of the thermos. Using this arrangement, the collectors optimise the use of solar energy also during the change of seasons and during the winter.
ADVANTAGES OF CPC DIFFUSION VACUUM TECHNOLOGY
- High temperatures and yields even in unfavourable atmospheric conditions, e.g. with low external temperatures.
- High absorption even with diagonal light thanks to the circular shape of the absorbing device.
- Top quality and high efficiency solar vacuum tube, of our own production and with high level of forced vacuum.
- Duration through time: no delicate glass-metal couplings that degenerate the level of vacuum in the glass pipe through time.
- Duration through time: high resistance and duration of the selective capturing layer also thanks to the protection of the vacuum.
- Loss of load contained thanks to the circulation of the flow in parallel in the circuit with "U"-shaped pipes.
- Maximum yield with less requirement for surfaces (half of the absorbant surfaces are normally necessary with respect to a traditional absorbing panel).
- Treated spacial aluminium concentrator reflector, with double CPC paraboloidal section (Compound Parabolic Concentrator) with optimised optics for the solar collector, to convey the sun’s non-incident rays onto the vacuum tube.
- High efficiency all year round.
- Low assembly costs: collector already assembled and easy to fix.
- Easy and immediate tube replacement with the EASY CHANGE system.
- Excellent heat insulation performance of the heat-carrying circuit also at low temperatures.
- Modern and elegant design.
Introduction
4
WHY CHOOSE KLOBEN
The research carried out to increase the yield of the Kloben solar collectors have allowed to discover efficient and innovative solutions to make the best of the sun and its diffused light. For this reason particular direct and diffused light capturers, with CPC, Compound Parabolic Concentrator, geometry have been studied and realised using materials able to supply optimal yields in total reflection (> 90%) and in reflection with diffused light. The combination of vacuum tube technology and CPC reflectors applied to the solar collectors, guarantee the best yields, most of all in situations of little radiation and low external temperatures. The advantage of the Kloben system therefore has an immediate effect also at an economical level.
Efficiency curve with radiation at 800 W and average temperature inside heat-carrying fluid of 50°C of the Kloben SKY CPC 58 DIFFISION model (Test Report no. 07COL623/1 (according to EN 12975-2:2006), ITW Institute, Stuttgart - Solar Keymark certification).
Efficiency curve with radiation at 800 W and average temperature inside heat-carrying fluid of 50°C of a Solar Keymark certified flat solar panel (data from Solar Keymark Database - Estif site, (European Solar Thermal Industry Federation))
From the comparison it was seen that for an average T of heat-carrying fluid of 50°C, the Kloben SKY CPC 58 Diffusion vacuum collector has greater efficiency that the flat collector, up to 35°C of environment T. The difference in efficiency increases even more on the decrease of the external temperature.
Yiled µ%
Environment temperature [°C]
Summer Winter
6
Dimensioning
Kloben makes use of a complex software that allows quick, precise and customised calculation of the enrgy requirements requested, the number of panels necessary and the solar integration supplied, in relation to the destination of use of the solar system, the details of the structure on which it is to be applied and the climatic data referring to the area of installation.
For the dimensioning of all components, it is recommended to contact Kloben-authorised staff. However, it is possible to perform approximate dimensioning of the components necessary for small solar systems (systems up to max 10 m
2
of solar collector surface, optimal exposure of collectors max 20° from South and inclination at 45°, average daily consumption per person of about 60 litres at 45°C), using the data shown below:
MAXIMUM DIMENSIONING OF SOLAR PANELS
MAXIMUM DIMENSIONING OF SYSTEM COMPONENTS
Expansion vessel: An approximate measurement consists in considering 6 l for every m2of solar surface installed.
For more accurate dimensioning refer to the solar calculation software of the vessel available in the Kloben Intranet area.
Anti-freeze liquid: add the following parameters (A + B + C + D)
A. 1/2 of the capcity of the expansion vessel installed
B. 10 l for every 40 m of line (20 delivery + 20 return)
C. 1.17 l for every SKY 8 CPC 58
1.74 l for every SKY 12 CPC 58
2.60 l for every SKY 18 CPC 58
3.07 l for every SKY 21 CPC 58
D. about 15 l for storage from 300 to 500 l
about 20 l for storage from 500 to 750 l about 30 l for storage from 750 to 1000 l
Solar Station: LOW FLOW for the management of systems with flow rate from 2 to 16 l/min
BIG FLOW for the management of systems with flow rate from 10 to 80 l/min For more accurate dimensioning refer to the solar calculation software available in the Kloben Intranet area.
Flow rate adjuster: 1 l/min for every m
2
of solar surface installed.
NORTH CENTRAL SOUTH
ITALY ITALY ITALY Water at 45°C produced per m
2
of solar surface (litres) 80 90 100
Heatable radiant surface (laying distance 10 cm) from 10 to 15 m
2
from 12 to 16 m2from 14 to 18 m
2
for every m2of solar
Relation between solar and swimming pool sup.
(for summer use - ca. 35% ca. 30% ca. 25%
water 26°C - night cover use)
8
Example of connection of the collectors in series
ATTENTION: do not connect more than n° 4 collectors in series
Probe S1
10
Example of connection of the collectors in parallel
TICHELMAN SYSTEM
EXAMPLE 3
Probe S1
Probe S1
12
reinforcements for stabilisation.
MATERIALS:
- All pipes making up the solar circuit must be in copper. The use of other materials such as zinc, stainless steel, plastic, brass and similar is not recommended. If materials different from copper are used, it will be impossible to guarantee correct functioning of the system.
- All joints must be welded or with tightening connections for copper pipes. The use of any other materials can jeopardise the sealing of the joints through time.
- To prevent sealing problems of the hydraulic joints of the solar circuit owing to heat stress, always check the distance at which the field of solar collectors is found with respect to the storage tanks. In all cases it is recommended always to make the joints with high temperature Teflon.
- The copper pipes must be insulated using a sheath for high temperatures such as the Kloben Solare.
CHECKS:
- Check that, with the system unloaded, the expansion vessel is calibrated at 2 bar.
- Check the correct connection of the probes to the solar control unit.
- Check that the solar control unit is connected correctly to the mains.
- Check that the setting of the solar control unit parameters is in compliance with that prescribed in the design phase.
N.B.: The solar collectors cannot remain exposed to solar radiation for long periods of time without being
loaded (ten days).
14
LOW - FLOW STATION PUMP FEATURES Flow rate 2-16 l/min
BIG - FLOW STATION PUMP FEATURES Flow rate 10-80 l/min
For more accurate dimensioning, refer to the solar calculation software available in Intranet.
Current I: Onside thermal overload settings.
Measurements - Weight
Motor Data
Single-phase motor (EM) 2 poles - 1
˜
230 V, 50 Hz
Nom. Power
P. max
W
Speed/N. of revs.
n.
1/min.
Absorbed power
P. W
Current
I
A
Condenser
µF/VDB
Motor
Protection
Measurements - Weight
Motor Data
Single-phase motor (EM) 2 poles - 1
˜
230 V, 50 Hz
Flat roof kit assembly layout
16
Position the fixing beams complete with base plate onto the ground,
taking care to respect the maximum distances indicated in the following figure.
Bolt the template support uprights to the fixing beams (see figure below)
ASSEMBLY LAYOUT FOR 1 SKY CPC 58 PANEL: 8 - 12 - 18 - 21
Model A max
SKY 8 300 mm SKY 12 680 mm SKY 18 1300 mm SKY 21 1500 mm
Fixing beam with base plate
Small base plate
Template support uprights
18
Flat roof kit assembly layout
ASSEMBLY LAYOUT FOR 2 SKY CPC 58 PANELS: 8 - 12 - 18
In the case of installation in series of 2 SKY CPC 58 8, 12, 18 panels, respect the distances indicated in the figure, where P (support plate width) is a fixed measurement.
ASSEMBLY LAYOUT FOR 3 AND MORE SKY CPC 58 PANELS: 8 - 12 - 18
In the case of installation in series of 3 or more SKY CPC 58 8, 12, 18 panels, rrespect the distances indicated in the figure where P (support plate width) and C are fixed measurements.
Model P B max
SKY 8 150 mm 535 mm SKY 12 150 mm 970 mm SKY 18 150 mm 1500 mm
Model P B max C
SKY 8 150 mm 535 mm 840 mm SKY 12 150 mm 970 mm 1280 mm SKY 18 150 mm 1500 mm 1940 mm
20
TITOLO
Flat roof kit assembly layout
CONNECTIONS AND VENT KIT
CONNECTION NUT DN 18
SPINNER DN 18
REINFORCEMENT INSERT DN 18
KLOBEN SOLAR VENT
CONNECTION DN 18
22
Sloped roof kit assembly layout
Position the fixing brackets, supplied in the kit, onto the sub-base as shown in the figure. Each fixing bracket has 4 holes measuring 12 mm. the choice of nuts and bolts must be made keeping in mind the structure and material of the sub-base.
Fixing bracket
ASSEMBLY LAYOUT FOR 1 SKY CPC 58 PANEL: 8 - 12 - 18 - 21
In the case of installation of 1 SKY CPC 58 8, 12, 18 or 21 panel, respect the distances indicated in the figure, where P (support plate width) is a fixed measurement and A and Z are variable.
Model P A max Z max Z min
SKY 8 150 mm 280 mm 1500 mm 880 mm SKY 12 150 mm 680 mm 1500 mm 880 mm SKY 18 150 mm 1300 mm 1500 mm 880 mm SKY 21 150 mm 1500 mm 1500 mm 880 mm
24
ASSEMBLY LAYOUT FOR 2 AND MORE SKY CPC 58 PANELS: 21
In the case of installation in series of 2 or more SKY CPC 58 21 panels, 2 support brackets for each collector are required as described in figure 2. Respect the maximum distance A as indicated in the figure, where P (support plate width) is a fixed measurement, while A is variable.
Model P A max
SKY 21 150 mm 1500 mm
26
Sloped roof kit assembly layout
CONNECTION AND VENT KIT
CONNECTION NUT DN 18
SPINNER DN 18
REINFORCEMENT INSERT DN 18
KLOBEN SOLAR VENT
CONNECTION DN 18
28
Instructions for assembly of the F1/PT 1000 probe
For correct introduction of the F1 probe (recognisable by the grey silicone cable) follow the indications given below:
1) Insert the sensitive element of the probe F1 into the relative probe-holder well mounted on the panel, in the direction
indicated in the figure above.
2) Leave the cable to run to the bottom of the well, making sure not to block it completely.
3) Successively, make the electric connections with the solar control unit, carefully following the instructions attached to
the same.
4) Connect the probe electrically to the control unit.
It is advised to wear work gloves and protective goggles in order to prevent injury if the
vacuum tube should accidentally break.
PT 1000/F1probe
(grey silicone cable)
Sensitive element
Probe-holder well
Direction of insertion of F1
30
Inclinations of the solar collectors
On the basis of the way of fixing the rear template support upright of the bracket kit for flat roofs it is possible to obtain 3 different inclinations of the solar collector. The figure shows the 3 different configurations allowed by the brackets. A larger inclination is used o favour the integration in the winter period. The choice of inclination is made in the design phase on the basis of user requirements and by evaluating the surplus energy in the summer period. Consult the Kloben technical dept. for inclinations different to those envisioned.
DISTANCE BETWEEN THE SETS OF COLLECTORS
The figure indicates, for every inclination configuration of the collectors, the minimum distances to be respected bet­ween one string of solar collectors in series and another to prevent shadows. The calculation has been carried out for the inclination of solar rays at the latitude of Rome. For installations in areas with considerably different latitudes, contact the Kloben technical dept.
INCLINATION 39° INCLINATION 45°INCLINATION 36°
32
Maintenance and repairs
A yearly inspection is recommended to check the general state of the collector and the solar system in order to determine the necessity of any repair interventions.
In particular, the following periodic controls must be performed:
Yearly check of system pressure.
If pressure is lower than the optimal working pressure (cf.“WARNINGS AND PRELIMINARY CHECKS”) the causes that determined the loss must be checked. Only a Kloben authorised after-sales centre can restore optimal working conditions.
Yearly check of anti-freeze protection efficiency.
The anti-freeze heat-carrying liquid must be checked yearly, before the winter. The Kloben authorised after-sales centres can check and restore the optimal anti-freeze protection conditions of the solar system.
Yearly check of corrosion protection.
A periodical check of the anti-corrosive properties of the heat-carrying fluid must be implemented. TYFOCOR LS has a pH that varies from 9.0 to 10.5. If, using litmus paper, sensitively lower pH values should be detected, generally < 7, it is good practice to replace the TYFOCOR LS heat-carrying fluid.
Check regarding the operational efficiency of the vacuum tube collectors.
For efficient functioning of the vacuum glass tube it is necessary that the vacuum conditions in the gap remain unaltered through time. An evident test that can be seen with the naked eye regarding the loss of vacuum conditions is the presence of a white powder deposit on the reflecting area in the lower “pointed” part of the tube. In the presence of damaged tubes the fragments of glass present in the housing of the vacuum tube in the solar collector box and in the small cup that supports the tube, must be removed. In order to replace a tube, first loosen the small cup following the OPEN arrow indicated on the back of the same. Slide the vacuum tube delicately out of the housing in the solar collector box, keeping a more or less inclined position with respect to the panel in order to prevent damage to the circuit U-shaped copper pipe. Recover the silicone gasket present on the upper part of the extracted tube. Insert the gasket onto the upper part of the new vacuum tube, after having lubricated the part with soapy water to ease insertion. Then house the tube in the collector, repeating the extraction operation in reverse order and delicately inserting the U-shaped copper pipe with relative combined absorbing device. Make sure, as previously, that the direction of insertion is not too inclined with respect to the solar collector panel. Push the open head of the vacuum tube into the box housing of the solar collector until it is fully home. Position and fix the tube-support cup into the lower part, screwing in a clockwise direction towards the CLOSE arrow. Accomodate the vacuum tube and attach the gaskets well to the collector box.
34
Indications regarding transport and handling
There are no specific warnings regarding the handling and transport of the solar collectors, if not the usual cautions to consider when handling fragile objects.
The packaged panel must be loaded onto lorries or any other means of transport in a vertical position.
Wear rubber or PVC gloves during handling, installation and maintenance of the panels, so as to prevent injury due to the accidental breakage of fragile material, such as glass.
The use of protective glasses is also recommended.
There are no particular measures for the use and handling of the heat-carrying liquid TYFOCOR LS. Just follow the normal safety and hygiene measures relative to the use of chemical substances. Also refer to the information contained in the TYFOCOR LS safety sheet.
36
Grand Soleil Medium Kit
Kloben SKY CPC 58 Solar Connection
Kloben Low-Flow solar station
Power supply from mains water
Kloben cylinder with two coils
Kloben condensing boiler
Kloben open collector
System loading
Kloben EASY Heat adjustment
PROVISIONS
FOR THE REALISATION OF THE SOLAR SYSTEM
M
All of the piping making up the solar circuit must be in copper.
M All joints must be welded or with the tightening-type brass spinner
connections.
M The copper pipes must be insulated using high temperature sheaths
with minimum thickness of 19 mm (E.G. 100010305 Kloben list).
M For the boiler warranty, when filling the system use algicide consulting
the Kloben list.
DESCRITION
This layout is purely indicative and not binding
and does not constitute any liability for Kloben
or its collaborators. The executive design and
consequent set-up must be realised with
respect to the laws in force.
System loading (no automatic loading)
Probe S3
Probe S1
(PT1000)
Domestic hot water
thermostatic valve
30 + 65°C
Realise condensate
drain to sewer drain
Boiler with diverter
valve control
Traditional
Boiler
Direction of
insertion
Combustion gas evacuation
with pipe ø 80 mm
pressurised with respect to
standard UNI 10845
Air intake
DHW probe
supplied with
the boiler
Piping connection
with panel
Panel joints
with insulation
Manual air vent valve
38
Grand Soleil Plus Kit
Kloben SKY CPC 58 Solar Connection
Kloben Low-Flow solar station
Power supply from mains water
Kloben cylinder with two coils
Kloben condensing boiler
Kloben open collector
System loading
Kloben EASY Heat adjustment
DESCRITION
PROVISIONS
FOR THE REALISATION OF THE SOLAR SYSTEM
M
All of the piping making up the solar circuit must be in copper.
M All joints must be welded or with the tightening-type brass spinner
connections.
M The copper pipes must be insulated using high temperature sheaths
with minimum thickness of 19 mm (E.G. 100010305 Kloben list).
M For the boiler warranty, when filling the system use algicide consul-
ting the Kloben list.
This layout is purely indicative and not binding
and does not constitute any liability for Kloben
or its collaborators. The executive design and
consequent set-up must be realised with
respect to the laws in force.
System loading (no automatic loading)
Probe S3
Probe S1
(PT1000)
Domestic hot water
thermostatic valve
30 + 65°C
KONDENS
27B 8-24
kW boiler
with diverter
valve kit
Direction of
insertion
Piping connection
with panel
Panel joints
with insulation
Manual air vent valve
DHW probe
supplied with
diverter valve kit
40
TotalEnergy Plus Kit
DESCRITION
PROVISIONS
FOR THE REALISATION OF THE SOLAR SYSTEM
M
All of the piping making up the solar circuit must be in copper.
M All joints must be welded or with the tightening-type brass spinner
connections.
M The copper pipes must be insulated using high temperature sheaths
with minimum thickness of 19 mm (E.G. 100010305 Kloben list).
M For the boiler warranty, when filling the system use algicide consul-
ting the Kloben list.
This layout is purely indicative and not binding
and does not constitute any liability for Kloben
or its collaborators. The executive design and
consequent set-up must be realised with
respect to the laws in force.
System loading (no automatic loading)
Probe S3
Probe S1
(PT1000)
Domestic hot water
thermostatic valve
30 + 65°C
KONDENS
27B 8-24
kW boiler
with diverter
valve kit
Direction of
insertion
Piping connection
with panel
Panel joints
with insulation
Manual air vent valve
DHW probe
supplied with
diverter
valve kit
Kloben SKY CPC 58 Solar Connection
Kloben Low-Flow solar station
Power supply from mains water
Kloben boiler with SSP stroage tank
Traditional condensing boiler
System loading
Kloben COSMET Heat adjustment
42
Certifications
44
Notes
Rev. 0 del 19-02-2008
Loading...