Solar Energy Application in Hotels

SOLAR ENERGY APPLICATION IN HOTELS

BY- K.SHAILAJA

MBA 2-’A’ BATCH

WHAT IS SOLAR ENERGY

Solar power is the result of converting sunlight into electricity Sunlight can be converted directly into electricity using photovoltaic (PV), or indirectly with concentrating solar power (CSP), which normally focuses the sun's energy to boil water which is then used to provide power.

HOW IS IT USED

It can be used as energy resource for generating electricity, thermal energy. Solar energy is harvested with the help of solar panels which are exposed to sun light, which is then converted into electricity and stored or used directly. Various kinds of solar equipments are available today such as solar cells, solar heaters, solar powered street lights etc.

THREE MAIN WAYS THAT WE USE THE SUN’S ENERGY

SOLAR CELLS They are also known as photovoltaic or photoelectric cells

which convert light directly into electricity. In a sunny climate one can get enough power to run a 100w light bulb from one square metre of solar panel. Solar cell (PV), is a device that converts light into electric current using the photoelectric effect. The first solar cell was constructed by Charles Fritts in the 1880s. Although the prototype selenium cells converted less than 1% of incident light into electricity, both Ernst Werner von Siemens and James Clerk Maxwell recognized the importance of this discovery. Following the work of Russell Ohl in the 1940s, researchers Gerald Pearson, Calvin Fuller and Daryl Chapin created the silicon solar cell in 1954. These early solar cells cost 286 USD/watt and reached efficiencies of 4.5–6%.

SOLAR WATER HEATERS

Here heat from the sun is used to heat water in glass panels. Water is pumped through pipes in the panel. The pipes are painted black, so they get hotter when the sun shines on them. The water is pumped in at the bottom so that convection helps the flow of hot water out of the top.

SOLAR FURNACES

Solar furnaces use a huge array of mirrors to concentrate the sun`s energy into a small space and produce high temperatures.

A solar cooker can be used for cooking, but it takes too long for it

USES OF SOLAR ENERGY

GENERATING ELECTRICITY PHOTOLUMINESCENT PRODUCTS This product store light energy and release it

later. They are a useful source of emergency lighting in the event of a sudden power outage.

VARIOUS EQUIPMENTS USING SOLAR ENERGY AS POWER RESOURCE IN HOTELS

As consumers demand more eco-friendly vacation choices, the tourism industry is responding with energy-efficient and carbon friendly resorts and hotels. Following is the list of various equipments used in hotel industry

SOLAR WATER HEATERS

Solar energy when used in water heaters can reduce a significant portion of the conventional energy being used for heating water.

POOL HEATING

Solar panels allow to heat the pool in a simple, economic and ecological way. Thus, the bathing season can be extended and the comfort improved without increasing the consumption of energy nor harming the environment.

SOLAR HEATING AND COOLING

It may seem contradictory, but cold can be generated from heat. This is very interesting, since, it´s in the summer when there is a greater demand for air conditioning and a bigger availability of solar thermal energy can be obtained.

HEAT PUMPS

Heat pump is the base of the whole air conditioning system. Its great advantage is that it can produces both, air conditioning and heating. Solar energy based heat pumps are used to replace the conventional energy hungry heat pumps

RADIANT FLOOR HEATING

It is a heating system completely invisible, clean and aesthetic, that allows maximum use of the space.Radiant floor heating consists of a network of pipes uniformly scattered and buried under the floor.

WATER TREATMENT AND RECYCLING –

Solar energy is used for various water treatment processes like Reverse Osmosis, sewage treatment, Gray water recycling and Water decalcification.

SOLAR LIGHTINGS

Solar energy is used in various lighting instruments from street lights, garden lights to small lightning devices used in indoor.

SOLAR BULK COOKING SYSTEMS

The conventional Bulk Cooking system consumes fast depleting fossil fuel on a very large scale, generating harmful CO and other gases leading to ecological imbalance. It also takes a lot of time to cook the food.

ADVANTAGES OF SOLAR ENERGY

SOLAR ENERGY IS FREE Other than the installation and maintenance cost

of the devices there is no other cost involved in solar energy generation.

SOLAR ENERGY IS ABUNDENT Solar energy is renewable unlike the conventional

resources (coal, oil) which will inevitably run out. SOLAR ENERGY IS CLEAN Non-polluting, no carbon dioxide like fossil fuels SOLAR ENERGY IS COST EFFECTIVE Solar power gives you a return on your

investment, while paying your utility for electricity gives you 0% return.

DISADVANTAGES OF SOLAR ENERGY

CONTINUITY OF SUPPLY During bad weather and nights the supply of solar

energy is stopped because of its basic limitation COST The initial cost is the main disadvantage of

installing a solar energy system, largely because of the high cost of the semi-conducting materials used in building one.

LOCATION IS IMPORTANT If there is no sun, there will be no solar power

because solar power is from the sun. So right location is very crucial for solar energy generation

THANK YOU