SOLAR COLLECTORS

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• SOLAR COLLECTORS
• Collector types and their sizing

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Solar system sizing
Annual sums of global irradiance on horizontal
surface in the CR kWh/m2
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Solar system sizing
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Solar system sizing
Annual solar irradiance on variously oriented
(horizontal axis) and variously inclined
(vertical axis) planes in the Czech Republic
kWh/sqm
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Solar system sizing
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Solar system sizing
ABSORPTANCE OF VARIOUS COLLECTOR SURFACES
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Solar system sizing
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Solar system sizing
Collector surface sizing for DHW

• Determining the heat needed
• Usual consumption of DHW 50 liters per person
  per day
• Equation Qm.c.(T2-T1), where T1 10C
• T2 45C
• The heat needed is 2 kWh/person.day

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Solar system sizing
Collector surface sizing for DHW

• The period when the heat need for DHW is fully
  covered by solar collectors
• Usually designed for April August
• According to the chart of average gains in each
  month, the least energy is available in April
  4 kWh/m2.day

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Solar system sizing
Collector surface sizing for DHW

• Determining daily gains and a collector area
• With the average 50 efficiency of the system in
  this period (involves also source
  instability!!!), the daily gain is 2 kWh/m2.day
  which is exactly the daily heat needed for 1
  person.
• gt 1 person 50 liters DHW 1 m2 of collector

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Solar system sizing
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Accessories to solar systems
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SOLAR COLLECTORS
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KPC Collector
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Technical parameters of KPC Collector
Dimensions 1000 x 2000 x 80 Collector
surface 2 m2 Absorber type copper
/ tube-grid type Absorber surface
spectrally highly selective Fluid volume
2.0 liters Weight 34 kg 4mm glass
solar prismatic Max. working pressure
0.6 MPa
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KPS Collector
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Technical parameters of KPS Collector
Dimensions 1139 x 2039 x 56 Collector
surface 2.32 m2 Absorber type
copper / meander-shaped Absorber surface
spectrally highly selective Fluid volume
1.6 liters Weight 41 kg 4mm glass
solar prismatic Max. working pressure 0.6
MPa
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Evacuated tube collectors
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KTU 10 and KTU 15 Collectors
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KTU 10 and KTU 15 Collectors
KTU 10 KTU 15 Dimensions 1000 x 1970
x 140 1430 x 1970 x140 Tube surface 0.82
m2 1.22 m2 Collector type vacuum with
U-tubes Absorber surface spectrally highly
selective Fluid volume 1.7 liters 2.4
liters Weight 41 kg 60 kg Max. working
pressure 0.6 MPa
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ETC16 Collector
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ETC16 Collector
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ETC16 Collector
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Technical parameters of ETC16 Collector
Dimensions 1684 x 765 x
100 Collector type with evacuated
tubes Absorber surface spectrally highly
selective Fluid volume 3.2
liters Weight 20 kg Max. working
pressure 0.6 MPa
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Accessories to solar systems
R125 Pump Group

• single-pipe type
• WILO Star RS25/4 pump
• thermometer and pressure gauge
• safety valve
• connection to an exp. tank
• feed and bleed valves

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Accessories to solar systems
VRD125 Pump Group

• two-pipe type
• WILO Star RS25/6 pump
• thermometers and pressure gauge
• safety valve
• connection to an exp. tank
• feed and bleed valves
• air separator

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Accessories to solar systems
FlowCon B Pump Group

• two-pipe type
• WILO Star ST20/6 pump
• thermometers and pressure gauge
• safety valve
• connection to an exp. tank
• feed and bleed valves
• DeltaSol regulator can be built in

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Accessories to solar systems
FlowCon S Pump Group

• two-pipe type
• WILO Star ST20/6 pump
• pressure gauge
• safety valve
• connection to an exp. tank
• feed and bleed valves
• DeltaSol BS/3 or Pro Regulator and 2 Pt1000
  probes included

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Accessories to solar systems
Expansion tanks for solar systems

• G Solar type
• max. overpressure up to10 bar
• 8, 12, 18, 25, 35 and 50 l volume

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Accessories to solar systems
DHW Tanks

• one heating coil
• electric heating possible
• magnesium anode
• volume 200 to 1000 liters

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Accessories to solar systems
DHW Tanks

• two heating coils
• electric heating possible
• magnesium anode
• volume 200 to 1000 liters

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Accessories to solar systems
Accumulation Tanks with DHW tank

• one heating coil
• inserted DHW tank
• magnesium anode
• electric heating possible
• volume 600 to 1500 liters

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Accessories to solar systems
Accumulation Tanks

• 2 flanges
• 9 inlets G6/4
• 4 inlets G1/2
• heat exchangers can be inserted into flanges

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Accessories to solar systems
Flange-mounted heat exchangers

• sizes 0.6 4.5 m2

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Accessories to solar systems
Electric heating rods

• nickel-plated copper
• threaded head G6/4
• 2 to 12 kW output
• novelty heating rods with thermostat