Himalaya & Sun

 4

                     This is story of every household of Nepal’s Himalayan region when you climb above 3000 m altitude. Most of household including hotels, lodges, restaurant are equipped with solar panel turned into direction of sun. Due to lack of transmission line to transmit hydro power generated electricity, solar power is only viable source of power for people living here. People are cent percent dependent on solar power to charge mobile battery, lighting small portion of house and watching selected television program. Although it is costly and provide minimum amount of power to run daily life still it is boon for them. There is no clue for survey of transmission line and searching alternative power.

                     So solar technology is not only environment friendly but it has been only hope of people to lighten their house. Thus government should be able to provide subsidy and encourage use of solar power. This is not only be Eco-friendly but also save forest from deforestation. If you want to see real life use of solar technology pack your bag and move toward Himalayas.

1

Advertisements

Journey form Training to Trainer : As Light of Hope Continues

                           

1918369_1168715499827565_1442948073745687430_n

                      Energy has been one of the basic requirement of human beings. The traditional use of fossil fuel is gradually shifting with advent of cleaner and greener technology. And change in people perception and consciousness about climate impacts, global warming and green house effects. RAN (Robotics Association Nepal) is one of Nepal’s best institutions trying to promote technology for generating holistic relation between machine and human.

                             The #LIGHTOFHOPE is audacious project initiated by RAN with agenda to connect rural livelihood to basic energy use like lighting and charging system. The process is to connect rural and earthquake affected area to primary energy use. The deprivation of energy & energy crunch is not only hampering economic activities but education of students. So #lightofhope aims to bring back hope to people to re-start life. Everything is broken but there stands only hope that things will get better. #LightofHope tires to embolden resilience, empathy and provide strength to return to normal living for Nepalese people who are beyond electric grid connection.

                                The Shree Nawalpur Secondary School was place for solar training and distribution. The place being in vicinity of Melamchi, still lacked proper road and electric connection. The event was already planned and well arranged by local partner YUWA Nepal. Primary task was to train ninety student, equip them for repair & maintenance, and distribute 5W solar system with light and charging system. We could see curious, energetic and bold ninety students, school authority, local experts being in school. We were really glad despite public holiday of Saturday people were kind enough to show up. The main objective was to give introduction about renewable energy, detail about solar system, component of solar system, repair & maintenance and about how solar can good business opportunity.

                                      Personally there is great difference in being with the crowd and handling the crowd. Being in training helped me to learn and nurture self. I was always obliged and felt privileged to get such opportunities. This was time to pay back or simply spread good vibes for others. I tried as much as being basic about facts and in mean time holistic. The major point I was careful not to let voids between by talks and student listening. The sessions was quite interactive, reaching student asking them and they asking back their queries. I was able to reach their psyche to some extent inspire them to lead from grass root. It was amazing to teach, hear, learn and share among students. The latter solar as business opportunities was carried out by Binod Pangeni. This session was especially designed to promote business opportunities that can or comes with solar technology. The main idea behind this was to encourage student to find solution within country and to remind them there are possibilities as well as potentialities developing country and making money in Nepal.

                                                    The journey to and fro Sindhupalchowk was full of fun. It was great conversation with fellow travelers local resident Aunt who rose my curiosity about place, her experience after earthquake, how grateful she was to have young people like us helping them, the hardship they have been through, hope & resilience they had despite their homes were completely turned down, her future dream to rebuilt house. Thanks to volunteers from Australia and Germany for being here selflessly to be part of re-construction. It was great to catch up with you guys. Oh! Driver dai, your story and reasoning and loud music system made us inexhaustible throughout travel. It simply helped us to be cheerful. Many many thanks to Bikash Gurung dai for providing wonderful opportunity to actually go to different part and shade some knowledge I had. It was great to reach people in local level and empower them. #LightofHope continues for adding hope for rural livelihood and re-construction after earthquake, shading light raising people’s aspiration.

Cheers.

About Robotics Association Nepal.

Robotics Association of Nepal (RAN), is not-for-profit, non-governmental organization which is continuously working in the field of robotics and electronics automation since its establishment (2010). Each year we celebrate festival of art, science and technology “Yantra”. Robotics Association of Nepal has built a network of students RAN Representatives (RR).

Solar Cookers

This slideshow requires JavaScript.

Introduction:

Nepal was once known for its dense forest, however in present only 29% of the cover remains. About 87% of the domestic energy in Nepal is produced by firewood. This percentage is close to unity in remote regions. Wood is used for cooking as well as space heating. The shortage of fuel wood in many parts of Nepal is prominent and collection has become more and more time consuming. Usually it is women and children who collect and carry wood to their home to use for food preparation. On an average, 4-6 hours a day is spent on collection of fire wood. In this context, cooking with the help of solar energy can be one of the solutions for this alarming situation. 

Solar cooking is a matured technology which many of the developing countries like India, China etc. has successfully promoted. There are several hundred thousand solar cookers in India and China.

Principle:

Though there is various type of solar cooker. The basic principle is to convert the sunlight into heat. Some of the basic principles are – 

  • Concentrating sunlight: A reflective mirror of polished glass, metal or metalized film is used to concentrate light and heat from the sun into a small cooking area, making the energy more concentrated and increasing its heating power.
  • Converting light to heat: A black or low reflectivity surface on a food container or the inside of a solar cooker will improve the effectiveness of turning light into heat. Light absorption converts the sun’s visible light into heat, substantially improving the effectiveness of the cooker.
  • Trapping heat: It is important to reduce convection by isolating the air inside the cooker from the air outside the cooker. A plastic bag or tightly sealed glass cover will trap the hot air inside. This makes it possible to reach similar temperatures on cold and windy days as on hot days.

Types 

In general there are two type of solar cooker. The box-type and concentration type.

Types-of-Solar-Cooker

Solar Water Heating System

 

Solar water heaters are one of the common applications of conversion of solar energy to heat water. Some of the typical applications include domestic hot water, swimming pool heating and commercial and industrial hot water supplies. 

This slideshow requires JavaScript.

 Generally a solar water heater consists of 3 parts – 

1. A heat collection system

A heat collector system commonly known as a collector converts the solar radiation to heat. This heat is transferred to the fluid contained within the collector unit. In a typical solar water heater, cold water is supplied at the lower side of the collector and as it is heated the warm water rises and exists from the upper side.

2. A heat storage system

The hot water from the collector is stored in the hot water tank. The tank is well insulated to prevent heat loss. Different kinds of insulation is available in the market some of the common types are Rockwool, poly urethane foam etc.

3. An auxiliary heating system 

During cloudy days an auxiliary heating system can heat water through electricity or other energy source. Normally such system is used only when required.

solar-water-heater-diagram

Type of Solar Heater System:

Typically there are 2 types of solar water heaters-

  • Passive systems, and
  • Active system

Passive system

In passive system, there are no pumps or fans used in the operation. The collector is close to the area where heat is stored or required. Natural process such as conduction, convection and radiation are used to transfer heat to the load. Passive systems are simpler and in general cheaper than active systems because they do not require the use of pumps or fans. A typical example is a thermosyphoning closed coupled of a passive solar water heater system.

passive

Active system 

In active systems, the energy is used or stored in a location away from the surface being heated by the sun. Therefore, the pump or fans are used to transport the fluid heated by the collector to the storage unit and sometimes from the storage unit to the load. A common example is solar pool heating system.

JabaBasicSolarHotWaterSystem

Harnessing Solar Energy for Sustainability

o-SOLAR-POWER-facebook                  The diaspora of solar market is slowly shifting from archetype system to innovative one. Till few years ago solar technology was limited to affluent class, renewable energy enthusiast and people obtaining it as subsidy. But solar trend has changed completely in recent years. The trading business of solar as commodity is shifting towards energy service provider. People were taking advantage of solar system at home individually at high cost intact with limited knowledge and improper operating trends. The situation at rural was even worse as people were fed up with irregular solar functionality lack of access of operation. They even questioned on practicability of solar technology.

                      Roughly 20% of world’s population does not have access to electrical grid. It is costly in Nepal to provide access of electrical grid to people as if geographical diversity and environmental concern. Building grid will disturb pristine beauty of our hills, Himalayas and Terai where Tourism is major source of income for people. The grid won’t be sufficient though another daunting task will be electrifying grids which is near impossible for some certain future. The rural population still relies on expensive, low quality hazardous polluting light source such as candles, battery-powered flash lights, kerosene lamps. The use of solar system has significantly grown over years yet kerosene lamps still serve as the main source of light for many people.

               There are various barriers such as asymmetric information. The general lack of product awareness is preventing people who need and want solar system from obtaining it. The cost or access for financing solar technology among consumers can hinder market penetration. The lack of information about what is available on the market. Not knowing how to determine which products best suits an individual needs. Early wear out of system by improper handling and general distrust among people by same in rural areas.

c8b61687a8c27bae79c32c94c0d093905c43505a    nt3775

 

             Governmental institutions, line agencies and aids, donors must realize that a subsidGovernmental institutions, line agencies and aids, donors must realize that a subsidy driven market cannot achieve sustainability. We must need to encourage demand driven markets rather than donor driven ones. Banks and Micro-finance should be involved for capital investment. When people start making money from generating solar energy then sustainability takes care of itself. The technical and general operational guidance should be given to consumers for handling and increasing durability of products.

            The paradigm shift on solar business from selling solar as commodity to energy service provider can increase sustainability.The concept of micro grids, nano-grids, productive end use are trending into solar business. They are easy to handle both in financial and technical view-point wise. So solar technology should not be limited to certain user it should be diversified according to best suits. The decreasing cost, able to address current energy needs, roof tied grid system, flexible financing, reliable source encourages harnessing power from solar technology for sustainable growth.

Light of Hope: Technical Aspects of Solar Technology

    solar_3-2

Introduction to Solar P.V

– Solar P.V is used to harness power from sun by collecting photon by silicon panel

– Initial cost for installation is high but long-term return & subsidy will lessen cost

– Easy to install, repair and maintain system

– Remote location and tribal region can get access to light and mobile charging

– Community approach will significantly reduce cost of installation and repair cost

– Eco Friendly and clean energy system of power generation

Components of Solar P.V

Img3

∗Solar Panel: It collects photon from rays striking from sun via silicon panel with doping of phosphorous.

∗Charge Controller: It is central connection of system with all supply coming to it from panel, battery, load.

∗Battery: Helps in storage of charge and provides power to load.

∗Load: Electric bulb or any electric appliances

∗Inverter: It helps to convert a.c to d.c and vice versa. Especially used in hybrid system or to operate a.c appliances.

Installation of Solar P.V

solar-power-setup-diagram

Solar Panel is installed on roof tops or areas where there is plenty of sunshine facing north to south direction at angle of 30 degree.

Charge Controller(CC) is central system in which connection from panel, battery and load comes which help to maintain safety of system it is also provided with fuse.

Battery is most important system which is connected to CC. The battery should not be completely drained and excessive use should be avoided.

Load is connected to CC from where supply is taken to electric appliances like bulb, t.v, freeze and other accessories.

Inverter is used to convert a.c to d.c and vice versa in hybrid system or to run a.c appliances from d.c power output. It is connected after load of CC.

Repair and Maintenance

Solar panel has long life so does not require much care except cleaning of panel and preventing it from dust & dirt.

Battery should be given special care it should be kept in proper ventilated area. There should not be direct connection from battery to load. In case of acid battery we should check amount of acid and fill with distill water in later stage. The user must be provided with knowledge about depth of discharge and limit up to which we can use battery.

Charge Controller is provided with fuse for safety we need to make sure that all connection is to be made from panel, battery and load.

Solar Business in Rural Areas

Types of Solar Business in Nepal

– Solar as Trading Business

– Solar as Commodity Business

– Solar as Energy Service Provider

Solar as Trading Business

– This is simply done by buying in bulk of solar materials and selling them in market directly to clients or local solar firms.

– Unreliable form of solar business rising in Nepal

– Requires high budget and investment for starting business

– Purely money oriented system of solar business

Solar as Energy Service Provider

Here solar company owns every components and provides solar as only service to people.

∗Micro Grids

– ABC (Anchor Business Consumer)

There has to be Anchor who needs 24 hrs supply like telecom tower and chilling Vats. Some Business potential like photocopy operator, hand tools user, freeze user as business model. Finally consumers clustered around installation. The tariffs will be different for different level of users.

fig-1

∗Nano Grids

This is purely d.c system which best provides service within range of 100m. It is suitable if there is 20-30 house in cluster. The energy service provider will look after installation and consumer will pay regular tariffs of use.

rural-electrification

∗Productive End Use

The service provider will install system and provide business oriented system like freeze, saw mills, grinding mills for which client will pay downpayment and monthly tariffs.