Solar Water Heater

 

Deepa's solar water heater is the most competitive alternative to conventional water heating methods such as electric geysers and fuel-fed boilers.   It makes an attractive and sustainable option with its pollution free nature and near zero operational cost. Solar water heaters run on a free fuel (i.e. sunshine), thus saving on energy costs that help recover its initial cost in just 2-4 years.

1) Domestic : Flats, Bungalows and Apartments.

2) Commercial : Hotels, Hospitals, Hostels and Dormitories.

3) Industrial : Process Industries, Preheating boiler feed water.

In domestic sector, hot water is used for bathing, washing of clothes & utensils etc. The requirement may, however, vary with the season of the year & number of family members.

 

 

Solar Water Heating System – 200 LPD

Non – Domestic Solar Water Heating System 1000 LPD & above

 

        TECHNICAL SPECIFICATION OF THE PRODUCT

                 Type: A

  • Total Capacity of the system – 100 LPD Solar Water Heating System
  • Number of PERSONS to use – 03 Persons

100 LPD Solar Water Heating System

Specifications For 01 System

System Make - DSSPL

Number of solar flat plate collectors required

01

Collector Type

COPPER with Chrome Coated

Collector dimensions (per collector)

2. 066 M2

2120 * 1040 * 100 mm  (+/- 10 mm)

Total Space required for the Collector

2. 066 M2

Space required for hot water insulated Tank

1 M2

Collector weight (per collector)

47. 5 Kg

Total Collector Weight for the System

47. 5 Kg

Solar insulated hot water tank capacity

100 LPD

Minimum temperature of heated water

Around 75 degree Celsius

Type of hot water storage tank

Graded Stainless Steel

Electrical Back-up

2 KW

   Type: B

  •  Total Capacity per system – 200 LPD Solar Water Heating System
  •  Number of PERSONS to use – 06 Persons

200 LPD Solar Water Heating System

Specifications For 01 System

System Make - DSSPL

Number of solar flat plate collectors required

02

Collector Type

COPPER with Chrome Coated

Collectors dimensions (per collector)

2. 066 M2

2120 * 1040 * 100 mm  (+/- 10 mm)

Total Space required for the Collector

4. 132 M2

Space required for hot water insulated Tank

1 M2

Collector weight (per collector)

47. 5 Kg

Total Collector Weight for the System

95 Kg

Solar insulated hot water tank capacity

200 LPD

Minimum temperature of heated water

Around 75 degree Celsius

Type of hot water storage tank

Graded Stainless Steel

Electrical Back-up

2 KW

   

                          Type: C

  • Total Capacity per system – 300 LPD Solar Water Heating System
  •  Number of PERSONS to use – 12 Persons

 300 LPD Solar Water Heating System

 Specifications For 01 System

System Make - DSSPL 

Number of solar flat plate collectors required

03

Collector Type

COPPER  with Chrome Coated

Collectors dimensions (per collector)

2. 066 M2

2120 * 1040 * 100 mm  (+/- 10 mm)

Total Space required for the Collector

6. 198 M2

Space required for hot water insulated Tank

1. 5 M2

Collector weight (per collector)

47. 5 Kg

Total Collector Weight for the System

142. 5 Kg

Solar insulated hot water tank capacity

300 LPD

Minimum temperature of heated water

Around 75 degree Celsius

Type of hot water storage tank

Graded Stainless Steel

Electrical Back-up

3 KW

Type: D

  • Total Capacity per system – 500 LPD Solar Water Heating System
  • Number of PERSONS to use – 20 Persons

500 LPD Solar Water Heating System

Specifications For 01 System

System Make - DSSLP

Number of solar flat plate collectors required

04

Collector Type

COPPER  with Chrome Coated

Collectors dimensions (per collector)

2. 066 M2

2120 * 1040 * 100 mm  (+/- 10 mm)

Total Space required for the Collector

8. 264 M2

Space required for hot water insulated Tank

2 M2

Collector weight (per collector)

47. 5 Kg

Total Collector Weight for the System

190 Kg

Solar insulated hot water tank capacity

500 LPD

Minimum temperature of heated water

Around 75 degree Celsius

Type of hot water storage tank

Graded Stainless Steel

Electrical Back-up

4 KW

   

Type: E

NON – DOMESTIC SOLAR WATER HEATING SYSTEM

  • Total Capacity per system – 1000 LPD Solar Water Heating System
  • Number of PERSONS to use – 40 Persons

1000 LPD Solar Water Heating System

Specifications For the System

System Make - DSSLP

Number of solar flat plate collectors required

08

Collector Type

COPPER  with Chrome Coated

Collectors dimensions (per collector)

2. 066 M2

2120 * 1040 * 100 mm  (+/- 10 mm)

Total Space required for the Collector

16. 528 M2

Space required for hot water insulated Tank

4 M2

Collector weight (per collector)

47. 5 Kg

Total Collector Weight for the System

380 Kg

Solar insulated hot water tank capacity

1000 LPD

Minimum temperature of heated water

Around 75 degree Celsius

Type of hot water storage tank

Graded Stainless Steel

Electrical Back-up

8 KW

Type: F

NON – DOMESTIC SOLAR WATER HEATING SYSTEM

Total Capacity per system – 5000 LPD Solar Water Heating System for plate washing of 300nos

5000 LPD Solar Water Heating System

Specifications For the System

System Make - DSLS

Number of solar flat plate collectors required

40

Collector Type

COPPER  with Chrome Coated

Collectors dimensions (per collector)

2. 066 M2

2120 * 1040 * 100 mm  (+/- 10 mm)

Total Space required for the Collector

82.64 M2

Space required for hot water insulated Tank

8 M2

Collector weight (per collector)

47. 5 Kg

Total Collector Weight for the System

1900 Kg

Solar insulated hot water tank capacity

2500 LPD x 2nos

Temperature of heated water

Around 75 degree Celsius

Type of hot water storage tank

Graded Stainless Steel

Electrical Back-up

20 KW

COLLECTOR TECHNICAL SPECIFICATION

SL NO

DESCRIPTION

SPECIFICATION

 

Flat Plate Collector

Flat Plate Collector

1

Material

Copper-Copper

2

Size

2120+10X 1040+10 X 100+10mm(B size)

3

Absorber Area

2.00 M2  (B Size)

4

Type of welding

Ultrasonic welding.

5

Absorber coating

Selectively –NALSUN coated

(Black Chromium with Nickel undercoat

Copper(Grade DHP, as per IS:191)

6

Frame material

 

 

Material:

Channel Box

Bottom Sheet

Extruded Al sections. Welded Channel Box with top cover. Material –Al (Gr.63400) tempered to HE9 (WP)... Top joints sealed with silastic sealant & bottom sealed with Fevicol

1.6mm thick

1.5mm thick

STUCCO embossed,0.71mm thick 

7

Riser

09 Nos

 

Material

Copper

 

Diameter

12.5mm (1/2”)

 

Thickness

24 SWG

8

Header

 

 

Material

Copper

 

Diameter

25.4mm (1”)

 

Thickness

22 SWG

9

Absorptivity

>0.95

10

Emissivity

<0.15

11

Front Glazing

Toughened Glass

 

Thickness

4mm

 

Material

Aluminum Angle Frame

 

Size

25x25x1.5 mm

12

Hardware

SS-304

13

Grommet

Neoprene Rubber

14

Glass beading

EPDM

15

Insulation

Rockwool, 50 mm. Thick

 

Density

48Kg./cum

16

Cladding

Aluminum foil

17

Finish spray painting

BHEL standard color Powder COATED

18

Header & Outlet Joints

Copper Flange

19

Class Pipes

(TATA, Jindal, Surya Prakash make)

2” -16 Mtrs.  (Uninsulated)

1” -77 Mtrs.)Insulated)

20

Pipe Insulation`

VIDOFLEX THERMAL INSULATION

DENSITY : 60.10 KG / M3

Thermal Conductivity: 0.034 W/Mk at 200 C

-600 C to 1050 C

21

Solar Panel Make

BHEL make

22

Required Test Certificates

Shall be provided as desired in the tender for following items.

Vidoflex – density and thermal conductivity.

Solar Panel – Absorptivity and Emissivity.

23

Overhead cold water tank

5000 LPD – with support structure to a height of 10 ft

24

Supply & installation of hot water pipe

1” Dia B class

25

Supply & installation of cold water pipe

2” Dia B class

26

Standards accessories for non  domestic solar water heaters

Gate valve – 1.5”

 

 

Air relief value

 

 

Temperature gauge

 

 

Water meter

 

All the above stated are also available with Evacuated Tube Collector(ETC)

 

Evacuated Tube Collectors (ETC) based Solar Water Heaters

 

Evacuated Tube Collector is made of double layer borosilicate glass tubes evacuated for providing insulation. The outer wall of the inner tube is coated with selective absorbing material. This helps absorption of solar radiation and transfers the heat to the water which flows through the inner tube.

ADVANTAGES

When comparing peak efficiency levels it may seem that there is little difference between flat plate andevacuated tubes, in fact flat plate may actually be higher, but this is during minimal heat loss conditions.When averaged over a year evacuated tube collector have a clear advantage. The key points are:

 

 

1) Due to the cylindrical shape of the evacuated tube, the solar tubes are able to passively track the sun throughout the day. Flat plate collector only provides peak energy output at midday when the sun is perpendicular to the collector's surface.

2) Air is evacuated from the solar tube to form a vacuum. This greatly reduces conductive and convective heat loss from the interior of the tube. As a result wind and cold temperatures have less effect on the efficiency of the evacuated tube collector.

3) solar collectors can often be used in subzero temperatures without the system sustaining damage. Flat plate systems often require expensive and complicated "antifreeze" systems to be installed.

4) Evacuated tubes are strong, long lasting, and should one be broken, inexpensive and easy to replace.If a flat plate collector panel is damaged the whole panel must be replaced.

5) Due to the high efficiency absorption of solar radiation even during overcast conditions, combined with excellent insulative properties of the solar tube, solar tube collectors can heat water all year round .