The home has to be insulated to reduce loss of heat. Passive cooling is a kind of solar cooling. The main idea behind passive cooling is to reduce the impact of the sun by orienting the landscape and the house so that you get the most benefits out of cool breezes. The home also has to be designed to reduce barriers to air paths through the home to let natural ventilation in. Here are some more tips and tricks on how to begin. It's a Renewable Resource Solar energy is considered a renewable resource. This means that reliability can be acquired day by day. You can expect to continue getting power and energy from the sun for several decades without having to recharge batteries or keep purchasing new parts. However, there are certain things and aspects about solar energy that should be discussed with people, especially since solar energy is now being integrated in constructing modern day houses and structures, and are even now becoming a viable source for power and electricity. One of those things that should be discussed involves the risk of using solar energy. The highest efficiency PV cells produced were by Boeing and SpectroLab in 2009, with efficiencies of around 35% to 41%. There are also other multi-layer cells that closely resembled the device. These were very expensive too, and were only used in the most unique applications. Thin film PV cells were also created and made in bulk. Today, it is more important to invest in devices that do not damage the environment and atmosphere. Solar panels do not have any moving parts and will need only minimal maintenance. As soon as the system has paid for its initial installation costs, you can get the benefits for several decades more for free. Convection is the heat transfer by a moving fluid such as water or air. Radiation is the direct transfer of heat through space via electromagnetic waves coming from a warmer object to a cooler object. Choosing the Application Knowing the various types of heat transfer will help you choose the ideal application that will ultimately become beneficial for your home or office.