What is a Solar Water Heater ?

What is a Solar Water Heater ?

• It is a device that converts the light emitted by the sun into heat energy that is transferred to the required medium.

• Works on the thermo-syphon principle ( No

external energy source required)

• Utilizes the black body absorption principle

• Heat energy generated can be stored or utilized depending on application.

APPLICATIONS

• WATER HEATING

• BOILER FEED

• SWIMMING POOL HEATING

• DISTILLING

• CHEMICAL PROCESSING

• ROOM HEATING

• CROP DRYING

PRODUCT TYPES

• Regular (Thermo-syphon) System

• Pressurized System

• Heat Exchanger System

• Cascade System

• Auto Circulation System

• Forced Circulation System

Save while utilizing the System

• Your monthly expenditure on maintenance is nil.

• The total cost of energy utilized by you will reduce.

• No man power cost on maintenance of the products.

• Erratic supply of electricity, fuel, coal and firewood

will not effect the supply of hot water.

SWH vs Electricity

• Savings/ Pay back period Electricity required to heat 1000 Ltrs of water

= 1000x1x1x40 861 x 0.9

= 51 units per a day

Savings per annum = 51x5.5x300 = Rs. 84,150/- per annum

Cost of 1000 LPD SWH System = Rs. 1,60,000/- Pay back period = 2 Years

NOTE: Cost of electricity @ Rs: 5.50 per unit Solar utility @ 300 days per year

Payback Period

• Economics of solar water heating system

• System capacity : 10 000 lts

• Project cost : Rs 16,00,000.00

• Electricity Price: Rs. 5.50 / kWh

• Savings in electricity: Rs 3,036.00/ day

• Per year savings: Rs 9,10,000/-

• Payback Period: 2 year (approx.)

Indirect Advantages

Costs incurred can be taken into P&L account (lease ) / 80% depreciation in the first year (direct)

Helps in reduction on peak load demand

Helps in reduction of greenhouse effects by contributing towards a non polluting environment

Provides a healthy environment to all living on this planet

No threat of change in technology in the near future

No skilled man power required for day to day maintenance and operation

Benefits of Solar Heating Systems over conventional heating method

IN NATIONAL INTEREST

Conserves precious foreign Exchange Productive use of conventional energy Helps in the national mission of energy conservation Reduced green house effect Helps the Country to avail carbon exchange benefits Saves foreign exchange Energy saved could be utilized for other productive

purpose

Benefits of Solar Heating Systems over conventional heating systems

ENVIRONMENTAL

Clean energy- No Pollution No Carbon dioxide emission -No ozone depletion Hot water-24 hours a day using solar energy Saves precious electrical/fossil energy Trouble of storing and maintaining coal, fuel, and

firewood is absent

Benefits of Solar Heating Systems over conventional heating systems

FINANCIAL

Low operating cost Negligible Maintenance cost No electricity - No monthly energy bills No breakdown - No repair cost Low investment in the long term

Area Required for Installation

Non- Domestic Installations• 1000 LPD - 12’ X 32’• 2000 LPD – 20’ X 32’• 3000 LPD – 30’ X 32’• 4000 LPD – DTC / FTC ( approx. 1200sq.ft

collector area)• 5000 LPD – DTC / FTC ( approx. 1400sq.ft

collector area)