Solar Energy


What is Solar Energy?

solar energy systemSolar energy can be (1). Light and heat provided by the sun or (ii), a slightly longer answer: after running the gauntlet from an average of 93 million miles away, through the various layers of atmosphere and atmospheric conditions (clouds, pollutants, dust and the like), about half of the solar energy is absorbed by water and land, with the other half reflected and re-radiated back into space.

The half that makes it is absorbed by oceans, land masses and plants; in the ocean, the energy drives heat and wind-driven currents (like the Gulf Stream); on land, the energy is absorbed and creates heat, and the little bit that’s left is absorbed by plants and converted to chemical energy through a process we all know as photosynthesis.

Solar power is very safe, reliable and effective, requiring no moving parts, it emits no carbon dioxide, fumes or pollution, and the panels will typically produce power for at least 25-30 years. A solar power system uses photovoltaic (PV) technology to harness the sun’s rays, converting sunlight photon energy into electrical current.

Solar power panels produce energy from daylight, not direct sunlight, so they still produce electricity on cloudy or overcast days. Solar power can be used directly in your home to power lights and appliances – or exported to the electricity grid. At night when your panels can’t produce electricity, you draw your electricity from the electricity network in the normal way. A solar power system contains two major elements: solar panels, which are usually mounted on a rooftop, and an inverter.

The solar panels contain two layers of silicon, one with a positive charge and one with a negative charge. When the sun’s rays land on a panel, electrons move from one layer to another, creating an electrical current. The inverter takes the current and converts in into usable power (120V&240V AC).Solar energy is long-term money saving investments, with up to TEN (10) YEARS warranty your system, customers are assured that Construction Energy will be reliable and we service what we sell.

Solar Water Heaters

solar panelConstruction Energy has available solar water heaters using vacuum tube and flat plate technology.  The solar thermal energy is collected in a device called solar collector. It consists of a dark surface called absorber, fluid flow passage and suitable provisions for heat loss reduction. When exposed to the Sun, the absorber absorbs the solar radiation and transfer a part of it to the fluid flowing over/under it. The present study is concerned with the flat plate design only. Solar water heater consists of mainly 2 parts. One is the collector and other is the insulated tank. The cold water in the collector get heated up and collected in the tank by Thermo Siphon Principle.

                                                                         Solar air conditioner

Solar air conditioners are also available.  These require no electricity.  We supply various sizes to cool your  space.   Solar AC units require almost no power input from JPS.  Modified inverter type system comprising of ac unit, grid tie inverter, and solar panels.  For small and large enterprises.

The type of solar air conditioning unit depends on the size of the room.  In BTUs, Construction Energy supplies and installs 9000, 12000, 18000, 24000, 32000, 48000btu and much more.

How does the AIRCOSAVER improve energy efficiency?

The air condition energy saver compensates the shortcomings of typical AC units and adds intelligence to your AC system.  The AIRCOSAVER’s sensor-driven software algorithms are designed to detect thermodynamic saturation and to optimize the compressor accordingly. When overcapacity is detected, the AIRCOSAVER switches the compressor off and avoids inefficient overcooling.

Your unit switches into “saver mode”. The fan keeps running and your system makes maximum use of the stored cooling energy in the heat exchanger. Once the stored energy is used up, the compressor can work efficiently again and is switched back on.  The set room temperature is reached without the inefficient parts of the cooling cycle. This results in significant energy savings without compromising cooling comfort.

Since the correct point to switch the compressor varies from unit to unit and changes with different weather conditions, the AIRCOSAVER is constantly monitoring the cooling status of your aircon unit and adapting its settings to ensure efficient operation of your air conditioning system at all times.

Protecting your unit against short cycling

Cycling the compressor too frequently in too short time intervals may harm the compressor and must be avoided. For this reason, the AIRCOSAVER features a built-in anti short cycling protection.  Besides the continuous anti short cycling protection, the AIRCOSAVER also adds a delay upon power-on to your unit. This valuable feature protects your air condition unit against damages from short power outages like they are common in many developing countries.

Solar PV Basics – How Do Solar Panels Work?

solar pv system“Solar PV” stands for solar “photovoltaic” panels. Very simply, solar PV panels turn sunlight into electricity, and this is how:  Every day, light hits your roof’s solar panels with photons (particles of sunlight).  The panel converts those photons into electrons of direct current (“DC”) electricity. Naturally, the sunnier it is, the more energy is produced by the panels. Those produced electrons flow out of the panel and into an inverter and other electrical safety devices.

The inverter converts that “DC” power into alternating current or “AC” power. AC power is the kind of electric juice that your television, computer, and toasters use when plugged into the wall outlet.  A bi-directional meter keeps track of the all the power your solar system produces. Any solar energy that you don’t use immediately will go back into the grid through the meter. Then at night or on cloudy days, that extra solar juice is credited back to your bill. So, net metering is similar to having a virtual battery-backup system.