Parkash Solar Energy Systems

Solar cooking is less laborious and more leisure generating mode of domestic cooking. The time taken to cook food in solar cooker may seem to be more as compared with other traditional method. Surely solar cooking takes about 60 minutes to cook entire meal of 3 items for an average family of 3-4 members on bright sunny days. The cooking can start from morning 11 a.m. till 2.00 p.m.

Working Principal:

Solar Cooker, with its four anodized reflectors open, is placed in the sun in such a position that sunrays are perpendicular to top glass (this can be achieved through shadow post). The black surface of the inner tray and the food pot absorbs and traps sun’s heat inside the cooker. The temperature inside the box increases upto 180ºC, which is adequate for cooking. The trapped heat energy is transferred to food in the food pot and the food gets cooked.

Due to pressure cooker concept the pressure inside the cooker increases the boiling point of water, resulting in faster cooking. The double walled glass lid and the rubber beading does not allow heat to escape.

Solar Cooking Time is Fun Time; Free Time:

Solar cooking is less laborious and more leisure generating mode of domestic cooking. The time taken to cook food in solar cooker may seem to be more as compared with other traditional method. Surely solar cooking takes about 60 minutes to cook entire meal of 3 items for an average family of 3-4 members on bright sunny days. The cooking can start from morning 11 a.m. till 2.00 p.m.

Once the food is loaded in the cooker, it needs no attention and intermittent stirring; and frees the cook to do whatever she/he would like. Scorching or burning of food and boiling over of cooking medium as in conventional cooking are eliminated altogether. Thus Solar-cooking time is fun time; free time without any tensions or hassles.

Solar Cooking is Healthy Cooking: Solar cooking is a slow process allowing chemical reactions in food to be completed while developing and enhancing natural flavour, aroma and sweetness in foods.

• Solar Cooking is Money Saver: Solar energy is zero cost fuel. In other words, no fuel bill is to be paid for solar cooking food. Solar cooking for 250 days, saves Rs. 1000 on Kerosene oil / Coal etc.

• Solar Cooking is Easy Cooking: Solar cooker is a simple device; easy to operate and maintain. It has no moving parts. It needs no lighter, no matchbox. But, it needs to be handled with care due to its lids with Glass and reflecting panels. A little care goes a long way in getting trouble free and maintenance free performance for a long time.

Sunlight is converted into DC electricity when it fall on the top surface of solar cell inside the SPV module by means the direct photovoltaic conversion process. The generated electricity can either be used in during the sunshine hours or may be stored in storage battery used later. Solar home light systems basically comprise of a solar photovoltaic module, battery, electricity charge controller, a high frequency inverter, fans, lamp etc. and placed in suitable housing.

Parkash solar systems offer a wide range of solar home light kits and systems with standard models generally conform to the MNES specifications. These models include:

Construction features:

• High frequency electronic circuit
• Solid plastic body of battery (tubular as to need)
• Stainless steel

MODEL NO.

• SHLL-1 - Set solar home lighting kit 1(LED based)
• SHLL-2 - Set solar home lighting kit 2(LED based)
• SHLL-3 - Set solar home lighting kit 3(LED based)
• SHLL-4 - Set solar home lighting kit 4(LED based)
• SHL-1 - Set solar home lighting system 18wp, 20Ah (M-1) MNES
• SHL-2 - Set solar home lighting system 37wp, 40Ah (M2-3) MNES
• SHL-3 - Set solar home lighting system 74wp, 75Ah (M4-5) MNES

Provision:

• ON/OFF switch
• Fuse
• LED indicators for

                * battery deep discharge
                * battery charge in progress

• No load, short circuit and reverse polarity protections
• Blocking diode to prevent reverse of current
• Long charging cabal according to need

Duration of works:

8 to 14 hours it working time .Working time will change according to time and model to model. For 24 hour working special home light set will be recommended to use according to house load. Actual duration of its working depend on solar radiation conditions.

 

Safety Instructions:

• Before using the home UPS read all instruction & cautionary marking on the home UPS, battery and all appropriate section of this instruction manual

• The solar home  light systems must be placed in a manner that it avoid expose to sunlight

• Solar array’s +ve & -ve wire should connect to solar connecter acc. To the market on the home UPS.

• Working in the vicinity of a lead acidic battery may be dangerous, Battery generated explosive gases during normal operation .The place of installation should be well ventilated & easily accessible for service.

• Foreign object and water must not enter the home light system. Always ensure that no object containing a liquid is kept near the solar home light systems.

• Do not cover your home light system with any cover or cloth.

• Do not install this system near flammable materials.

Parkash Solar Lanterns are solar power devise for indoor and outdoor lighting which on omni direction bright light. The solar modules convert sunlight into electricity during the day time, charging the battery fitted in the lantern. The lantern will supply power to the compact fluorescent lamp (CFL) whenever require. In the evening or night, the stored energy in the battery is used which can be recharge again the following day.

Features:

• Absolutely pollution free
• Safe and easy to operate
• Light weight and easy to carry
• Attractive body made of ABC plastic
• Saving in electricity bills
• Charge controller for battery protection

Application:

• As emergency light source
• Remote homes
• Hospitals
• Hotels and restaurant
• Garages, shops and workshops
• Tents, cottages, tunnels

The circuit incorporates series regular constant voltage charging strategy for charge regulation is adopted and thus prevents the battery from being overcharged.

Solar Photovoltaic Principal: Sunlight  is  converted  into  DC electricity when it falls on the top surface Of the  solar  cell  inside  the  SPV  module  by means  of  direct  photovoltaic conversion process. The generated electricity can either be directly used during the sunshine hours or may be stored in storage batteries to be used later. Solar Lantern basically comprises of a solar photovoltaic module, battery, electronic charge controller, a high frequency inverter, a lamp covered with transparent chimney and placed in suitable housing.

Parkash Solar Systems offers a wide range of solar lanterns with standard models generally conform to MNES specifications .These models include:

Solar Mobile Chargers offered by us come with sufficient battery backup are available in a variety of to suit the different types of mobile phones. One fully charged, these mobile chargers with solar charging system can be used at any time for charging any type of mobile phone.

Installation:

Fix  clamps on module frame and hand tighten the module frame on the horizontal pipe.  The vertical pipe can be secured on a Top of pole, such that the module when facing south direction will not be shadowed.  Shadows should be avoided, since it will reduce energy produced by the module and the Street Light  cannot be used for the desired time.  After locating and south pointing the module face tighten the check nut on vertical pipe.  Tilt the face of the south facing module and adjust it to approximately an angle to horizontal equal to latitude of the site location.  Tighten  U Clamps on module frame.

Note : For sites in India (located in Northern Hemisphere), PV Modules must face south and must be tilted at an angle equal to latitude of the place where it is used.  Likewise, users in southern hemisphere must orient module face to North and adjust tilt angle equal to latitude.

• Open circuit Voltage       -        21V at STC
• Peak On-load Voltage    -        16.40V   
• Peak Current available   -        650 mA
• Peak Power                    -        74.00 Wp

Solar Photovoltaic: Photovoltaic (PV) electricity is produced directly from sunlight when photons (light particles) are absorbed in a semi-conductor and create an electric current.  PV power generation requires no fuel and is an environment friendly and cost-effective energy source. Solar Photovoltaic works on the principle that when sunlight falls on silicon cells, it generates electromotive force.  When such single cells are connected in series and parallel in a definite number, it produces the desired voltages.

Solar Street Light: It is a independent lighting device suitable for either indoor or outdoor lighting.  The daily mean operating period is 12 hours with average daily solar insulation of 5 Kwh/Sq.m. on horizontal surface. It consists of a CFL, Lead Acid Battery, with battery box electronic  circuit all housed in a insulated body and a suitable SPV module with mounting arrangement and cable for connection to the Street Light.

Compact Fluorescent Lamp (CFL): The CFL is a low-pressure gas discharge lamp and is provided with 2 cathodes, which contain emissive materials.  When the cathodes are heated, they emit ions.  When a ignition voltage is applied across the two cathodes, the lamp starts burning.  CFL is an energy efficient fluorescent discharge lamp.  It is a 4 pin CFL, OSRAM make, 11W & 18W day light, fitted in a base down configuration to the housing with suitable socket.  The total lumen output is 900 ±5%.

Basic parameters considered by us are as under:
Swimming Pool Heating System at 3ºC Delta T after stabilization

• Heating requirement  -  Swimming pool heating
• Temperature to be maintained  -  21-24 deg.C+/-1 deg.C  (Assuming Ambient temp 20 deg. C)
• Pool surface area  -  1580 Sq. Ft
• Pool Size  -  3,50,000 liters
• Solar Heater integration  -  After pump, chlorine dosing and pool Filter before entering Pool
• Pump for circulation  -  Existing pool pump reused, New Pump after filter pump
• Temperature rise designed  -  3ºC over ambient assumed during daytime at 18 to 20ºC under 800 watts Radiation
• Stabilization period  -  7 to 10 days

Financial Benefits:

• Environment friendly, pollution free.
• Enormous saving of precious fuels and electricity.
• Very reliable and user friendly.
• Minimal Maintenance required involving cleaning of collector glassed only.
• 100% depreciation can be availed in the first year itself.
• Guaranteed output for 300 days of the year. (i.e. except monsoons/cloudy periods when output will fluctuate based on solar radiation available.)

Why Solar:

A solar heating system for your pool is an economical alternative to expensive conventional heaters. Solar collectors capture free energy from the sun and use it to heat your pool. They extend your swimming season and reduce monthly fuel bills without depleting non-renewable fossil fuels.

Most swimming pools require some type of heating, whether to bring the pool up to temperature in the winter, to maintain a desired temperature during the swimming season, or to extend the swimming season. You can use conventional gas or electric heaters, but you may have large monthly bills from your local utility company. Another option is to install a heating system that captures the free heat of the sun. Solar energy is a renewable domestic fuel that's widely available. Today, solar pool heating systems can be cost competitive with conventional heaters. Their advantage ... very low operating costs.

Another option is to install a heating system that captures the free heat of the sun. Solar energy is a renewable domestic fuel that's widely available. Today, solar pool heating systems can be cost competitive with conventional heaters. Their advantage ... very low operating costs. The most cost-effective use of solar energy today is to heat swimming pools. Swimming pools require low temperature heat, which is where solar collectors are most efficient.

With our expertise in offering efficiently priced solutions, we ensure that the offered Solar Torch is made available at costs that suits varied needs and requirements. This range is widely known for its long service life and durability. Customers appreciate this range for its high efficiency and reliability.

"Parkash Solar" is a flat plate type of Solar Water Heater. It is made of an aluminium body with a toughened glass sheet in front to allow the sun’s rays to pass through. Under the glass sheet is the heart of “Parkash Solar” – a series of black selectively coated copper fins and riser tubes. The space between the copper fins and tubes and the aluminium box is well insulated with pads of rock wool.

Working principal: The sun’s rays passing through the glass sheet fall upon and are absorbed by the black copper fins and riser tubes. The cold water within the copper tubes absorbs this heat energy and is then stored in the insulated storage tank, which prevents the heat from escaping. The system works under 2 principles which are given below :

• Thermosyphon: In this system, the cold water at the bottom of the collector moves through the riser tubes to the top as it gets continuously heated, from where it passes to the insulated storage tank. This process is repeated through out the day as long as the collector is exposed to direct or diffused sunlight. The Thermosyphon system operates only on the available solar energy, and it requires neither maintenance nor any external energy source.

• Forced Circulation: Here the cold water flows through the riser tubes, where it is allowed to get heated to the desired temperature, and then forced out of the riser tubes with the help of a pump and control instruments. This system is more versatile and is recommended where hot water is required all through the day.

Installation Instructions: The collectors must be installed facing due south and tilted at an angle which is equal to the latitude of the location plus 15°. This is done in order to ensure that the system operates all year round at the highest possible efficiency. The collector orientation should be within 30° East or West of true South and Plus or Minus 10° of the optimum tilt angle.

It must be ensured that the collector surface is not shaded at any time. The location of tall trees, building etc. must be kept in mind before choosing the location.

The solar collectors can be mounted on almost any surface such as flat roof, sloping roof, ground, etc. The location of the collectors should preferably be as close to the user point as possible in order to ensure that plumbing is kept to a minimum thereby reducing cost and increasing system efficiency.

Energy Calculations: The “Parkash Solar” solar water heating system uses the Sun’s energy to heat water upto a temperature of 85° C, for various applications. As the Sun’s energy is free, there are no operating expenses making “Parkash Solar” extremely cost effective.

Given below is a sample calculation for Pune region:

Incoming solar radiation	700 W/Sqm.
Total solar radiation per collector	1400 W/Sqm.
System efficiency	0.55
Total energy output per collector per day	5305 K Cal.
Energy saving per collector per year (assuming 300 working days per year)	15.9 lakh K.Cal. (1850 units)
Money saving per collector per year (@ Rs.3/- Per Unit)	Rs. 5,550