Biofuels- In addition to diesel, petrol, or other fossil fuels, biofuels are liquid or gaseous fuels made primarily from biomass, and are used for transport, stationary and portable applications. Generally, biofuels are made from plants that are naturally high in sugar (sugarcane, sugar beet, and sweet sorghum), starch (maize, tapioca, coconut oil), or oils (soybean, rapeseed, coconut, sunflower).
Biogas - The substance mainly consists of hydrocarbons, which can be burned to produce heat and energy. Certain microorganisms use a biochemical process to convert biological wastes into bio-gas. Biological processes generate useful gas, which is called biogas. Gases that compose it are mainly methane.
Ground Source Heat Pumps- Ground source heat is used to heat, cool, and supply hot water to homes and buildings Pumps (GSHPs) utilize the earth's fairly constant temperature between 16 - 24oC at a depth of 20 feet. Solar heat is captured from Earth by GSHP. The mean annual air temperature at that latitude at the surface is roughly equal to the temperature in the ground below 6 meters (20 ft). In winter, heat is transferred to the planet, while in summer, it is transferred away from the planet. With heating efficiencies between 50-70% higher than other heating systems and cooling efficiencies between 40-50% higher than available air conditioners, the GSHP system is one of the most efficient residential heating and cooling systems available today.
Wind Energy- Air moves across land and sea when it is forced by the wind. As the earth rotates and its surfaces heat and cools unevenly, the wind is produced. In inland and water areas, the sun's heat is absorbed and released differently. A local wind occurs when warm air rises and is replaced by cooler air. Air flows in one direction when the earth is rotating. Using alternatives such as wind power, a nation such as India, or any region whose energy production relies on imports such as oil or coal, will become more self-sufficient. Wind-generated electricity does not emit CO2 and does not contribute to greenhouse gases. The process of generating electricity with wind is relatively labor-intensive, creating numerous jobs. When wind energy is available, it can be combined with a diesel engine to save fuel in remote areas or in areas with weak grids.
Energy efficiency
Net-zero energy buildings- In an NZEB, the energy demands are very low thanks to very efficient design and high levels of renewable energy. This means that NZEBs produce a similar amount of energy as they consume. The NZEBs must reduce their energy demand as much as possible using energy-efficient technologies, and then they must use renewable energy sources (RES) to meet the residual demand. As a result of efficiency gains, renewable energy technologies can provide a majority of the energy needed. Reaching the NZEB goal logically requires this approach.
Low-cost preservation technologies-
Low-cost technology for the preservation of vegetables- The nutritional value of vegetables like cabbage, cauliflower, green papaya, beans, peas, carrots, turnips, radishes, pumpkins, etc, can be substantially altered by this method over the course of about three months.
2)Zero Energy Cool Chamber
Green buildings- During construction and operation, a green building uses as few natural resources as possible. A green building aims to conserve the environment by reducing it to a minimum.
Bioclimatic building techniques maximize the efficiency of building materials and construction practices; they optimize the use of local resources by optimizing on-site storage of water as well as energy; they use minimum energy to power themselves; they use efficient lighting, air-conditioning, and other equipment to protect indoor environments; they utilize renewable energy sources, and they provide comfortable hygienic indoor working conditions.
