Solar Lanten

Solar Home Lighting System

  Solar Home Lighting System According to Requirement

	Photovoltaic modules/ panels (Wp)	Battery capacity	Maximum recommended load and duty cycle
I	37-40	12 V, 20 AH (Tubular L.M./Gel VRLA)	20 Watt Load for 4 hrs. (80 Watt hrs./day)
II	50	12 V, 60 AH (Tubular L.M./Gel VRLA)	30 Watt Load for 4 hrs. (120 Watt hrs./day)
III	70-80	12 V, 80 AH (Tubular L.M./Gel VRLA)	45 Watt Load for 4 hrs. (180 Watt hrs./day)
IV	100	12 V, 80 AH (Tubular L.M./Gel VRLA)	60 Watt Load for 4 hrs. (240 Watt hrs./day)
V	125	12 V, 150 AH (Tubular L.M./Gel VRLA)	75 Watt Load for 4 hrs. (300 Watt hrs./day)

Solar For Home Solution

Roshan Solar Solution is provide Solar Power Packs (sometimes referred to as solar kits) that are ideal for meeting the growing energy needs of areas where there is either an intermittent or no grid supply of electricity. These are also very useful in semi-urban and rural areas that often experience constant voltage fluctuations. Embracing proven solar technology, Roshan Solar Solution is provide Solar Power Packs are reliable, energy efficient, environmentally friendly and completely maintenance-free. Modular in design, these can be easily customised and upgraded to fulfill increased power requirements. If you are interested in purchasing a Solar Power Pack, please contact us.

 

 

Features

• Modular design with the option of customizing and adding on Solar Modules
• Designed to power fans, lights, TVs. Ideal for rural & suburban households

• Modules available with 2-4 hours/day back up in standalone mode along with 4-8 hours/day back up in hybrid mode

• Works on both Solar and AC mains power

• Protected against over load, short circuit, battery deep discharge, over charge and reverse flow conditions

• In-built AC mains battery charger and Solar Charge Controller with temperature compensation

• Table/Wall mountable inverter

Solar for the common man in India: no longer a dream

Solar energy generation processes have improved in the last few decades to the point where they have become the perfect replacement for traditional, environmentally damaging energy sources. As a result, the world is seriously preparing for a rapid shift towards renewable energy – especially solar. Nations are frantically maximising energy yield and developing the next …

LED Terminology

Coloring Rendering Index (CRI) - CRI represents the quality of light and its faithfulness to render colors correctly, that is, to enable us to perceive colors as we know them. The ideal CRI is 100, and some incandescent bulbs approach this level. LEDs and CFLs use different design components in trying to equal the CRI of incandescent bulbs. LED bulbs CRI ratings range from 70 to 95, and the best CFLs have ratings in the mid 80s. The LED CREE CR6 bulb, for example, features a CRI of 90 Warm White making it one of the highest in the industry.

Correlated Color Temperature (CCT) - is the measure used to describe the relative color appearance of a white light source. CCT indicates whether a light source appears more yellow/gold/orange or more blue, in terms of the range of available shades of "white." CCT is given in kelvins (unit of absolute temperature). 2700K is "Warm" and 5000K is "Cool". The typical light color we are used to in indoor home lighting is "warm", 2700 - 2800K.

Lumen - a unit of standard measurement that is used to describe the amount of light contained in an area as perceived by the human eye. The more lumens, the brighter the light. You can use lumens to compare the brightness of any bulb, regardless of the technology behind it, and regardless of whether it's incandescent, CFL or LED. 

Luminous Flux - the flow of light measured in lumens. With light bulbs, it provides an estimate of the apparent amount of light the bulb will produce. Depending on the application, much of an incandescent's light is wasted because it's emitted in every direction. LED bulbs, on the other hand, put out directional light, sending all of the light exactly where it's needed. 

In practical application, when buying a light bulb, we should look for bhlbs which produce more light but consumes less energy. Understanding lumens as a measure of brightness makes it easier to select the most efficient bulb for your application. This is also important

Benefits of LED lightbulbs

Long-lasting - LED bulbs last up to 10 times as long as compact fluorescents, and far longer than typical incandescents.

Durable - since LEDs do not have a filament, they are not damaged under circumstances when a regular incandescent bulb would be broken. Because they are solid, LED bulbs hold up well to jarring and bumping.

Cool - these bulbs do not cause heat build-up; LEDs produce 3.4 btu's/hour, compared to 85 for incandescent bulbs. Common incandescent bulbs get hot and contribute to heat build-up in a room. LEDs prevent this heat build-up, thereby helping to reduce air conditioning costs in the home.

Mercury-free - no mercury is used in the manufacturing of LEDs.

More efficient - LED light bulbs use only 2-17 watts of electricity (1/3rd to 1/30th of Incandescent or CFL). LED bulbs used in fixtures inside the home save electricity, remain cool and save money on replacement costs since LED bulbs last so long. Small LED flashlight bulbs will extend battery life 10 to 15 times longer than with incandescent bulbs. 

Cost-effective - although LEDs are initially expensive, the cost is recouped over time and in battery savings. LED bulb use was first adopted commercially, where maintenance and replacement costs are expensive. But the cost of new LED bulbs has gone down considerably in the last few years. and are continuing to go down. Today, there are many new LED light bulbs for use in the home, and the cost is becoming less of an issue. To see a cost comparison between the different types of energy-saving light bulbs, see our Light Bulb Comparison Charts.

Light for remote areas and portable generators - because of the low power requirement for LEDs, using solar panels becomes more practical and less expensive than running an electric line or using a generator for lighting in remote or off-grid areas. LED light bulbs are also ideal for use with small portable generators which homeowners use for backup power in emergencies.

The common styles of LED bulbs available for household use include the following:

Omnidirectional LED bulbs

In this style LED bulb, clusters of LEDs are covered by a lens which spreads the light over a wider area, like standard incandescent bulbs. Available in standard Edison bases, these bulbs are used as area lighting for rooms, porches, reading lamps, accent lamps, hallways and low-light applications where lights remain on for extended periods.

Available in 40, 60 75, 100 watt equivalent; clear or frosted. Diffused LED bulbs

                                              

 Dimmable Globe LED bulbs

Designed for bathroom vanities or anywhere a globe bulb is required, these bulbs produce light equivalent to a 40-watt incandescent bulb, yet only consume 10 watts of power. Dimmable from 100% to 10%, these bulbs have a 200 degree beam angle to cast light in a wide area.

Equivalent wattages and light output of Incandescent, CFL and LED bulbs

Light Output	LEDs	CFLs	Incandescents
Lumens	Watts	Watts	Watts
450	4 - 5	8 - 12	40
750 - 900	6 - 8	13 - 18	60
1100 - 1300	9 - 13	18 - 22	75 - 100
1600 - 1800	16 - 20	23 - 30	100
2600 - 2800	25 - 28	30 - 55	150

Comparing the features of Incandescent, CFL and LED bulbs

	LEDs	CFLs	Incandescents
Frequent On/Off Cycling	no effect	shortens lifespan	some effect
Turns on instantly	yes	slight delay	yes
Durability	durable	fragile	fragile
Heat Emitted	low (3 btu's/hr)	medium (15 btu's/hr)	high (85 btu's/hr)
Sensitivity to high temperature	some	yes	no
Sensitivity to low temperature	no	yes	no
Sensitivity to humidity	no	yes	some
Hazardous Materials	none	5 mg mercury/bulb	none
Replacement frequency  (over 50k hours)	1	5	40+

Cost Comparison between LEDs, CFLs and Incandescent light bulbs

LED light bulbs will eventually be what we use to replace incandescent bulbs – CFLs are a temporary solution to energy-efficient lighting. The reason LEDs have not yet displaced CFLs from the market are twofold: the first generation LED bulbs had a narrow and focused light beam, and the cost of the LED bulbs was too high. 

	LED	CFL	Incandescent
Light bulb projected lifespan	50,000 hours	10,000 hours	1,200 hours
Watts per bulb (equiv. 60 watts)	10	14	60
Cost per bulb	2475	272	86
KWh of electricity used over 50,000 hours	500	700	3000
Cost of electricity (@ 0.10per KWh)	3422	4819	20655
Bulbs needed for 50k hours of use	1	5	42
Equivalent 50k hours bulb expense	2475	1360	3614
Total cost for 50k hours	5903	6179	24269

How does solar energy work?

Solar Panels

The solar panels are made up of photovoltaic (PV) cells, which convert sunlight into direct current (DC) electricity throughout the day.

Inverter

This device converts the DC electricity generated by the solar panels into the alternating current (AC) electricity.

Electrical Panel

The AC electricity is sent from the inverter to your electrical panel to power your lights and appliances with solar energy. The electrical panel is often called a "breaker box."

Utility Meter

The utility meter measures your energy use. It actually goes backward when your system generates more power than you immediately need. This excess solar energy offsets the energy you use at night.

Utility Grid

Your business is still connected to the grid. You’ll need that power from the utility company at night, but don’t worry. The cost is offset by any excess solar energy you put into the grid during the day.

Power Guide Monitoring System

Our exclusive PowerGuide monitoring system continuously tracks your energy production and ensures that your solar power system is running smoothly. It will even alert our repair crews in the rare event that problems arise.