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.
Types of Solar Water Heating Systems – Normal Type
- 100 LPD Solar Water Heating System
- 200 LPD Solar Water Heating System
- 300 LPD Solar Water Heating System
- 500 LPD Solar Water Heating System
- 1000 LPD Solar Water Heating System & above as per Customer requirements
Solar Water Heating System – 200 LPD
TECHNICAL SPECIFICATION OF THE PRODUCT
Type: A
| 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
| 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
| 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 Stee |
| 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 .
