Commercial buildings that are centrally air-conditioned use an air-cooled or water-cooled heat exchanger to pump out the heat from inside the building into the atmosphere. The atmospheric temperature conditions contribute to the efficiencies of the air-conditioning systems. If the atmospheric temperatures are higher, efficiency of the air-conditioning system is lower and vice versa.
GIBSS Geothermal heat sink system uses the earth as the heat sink instead of the outside atmosphere. The earth temperatures in most cases are much lower (almost 50% lower) than the atmospheric temperatures. With the lower temperatures the efficiencies of the air-conditioning systems are significantly higher. The Geothermal Heat Sink project for most buildings is one the best prospects for energy saving with payback potential between 1 and 2 years.
The pictorial comparison of the conventional system with the Geo system is as follows:
Background of innovation
The innovation makes geothermal heat exchange feasible and a preferred choice in cooling only air-conditioning applications in the tropical regions like India. With the innovation, commercial building owners could replace conventional cooling tower systems with full time or part time geothermal heat sink. The innovation will not only reduce operating costs of buildings, but also reduce carbon footprint significantly. While geothermal heat exchange continues to be common in the cold countries like the US or most parts of Europe, the use of the technology in tropical climates has knowledge and technology barriers. GIBSS innovation overcomes all such barriers.
GIBSS is focused on making Zero Energy Buildings and buildings that can harvest energy and use the same energy to meet its demand. More than 80-90% of the energy consumption in a building is for air-conditioning, heating water and lighting. GIBSS has solutions for each of these three areas, thereby helping building owners reduce energy consumption by almost 60-90%. Therefore effectively if a commercial building is paying somewhere upto
र10crores on the energy bills every year, post installing a GIBSS geothermal system, Hot Water Co-generation system the bills could come down to as much as र2crores, 80% reduction.
The conventional air-conditioning systems use either an air-cooled condenser or a cooling tower to reject building heat in the atmosphere. Systems that use air-cooled condensers are called air-cooled systems and systems that use cooling towers are called water-cooled systems. Gibss uses geothermal interface to help conventional air-conditioning systems interact with the ground. The ground is at a much cooler temperature than the ambient temperature below a certain depth. The AC efficiency improves by almost 60-80%. So we are able to simulate a winter like environment throughout the year. The ground after a certain depth of 10mts approximately, is always at a constant and lower temperature than the ambient temperature. In a city like Delhi or Lucknow where temperatures can rise upto 45-600 or so, the below ground temperature is at 210 or thereabouts.
For heating water, the innovative GIBSS™ Hot Water co-generation system operates at a COP (coefficient of performance) 7-8 times higher than conventional boiler/ hot water generator system. While the conventional boiler/ hot water generator operates at COP of 1.0, the Gibss system operates at an integrated COP of at least 7 – 8. While the Solar water heating system has a payback time of over five years, the payback time for a geothermal system is around six months only. We focus on reducing demand in the building first before looking at supply side solutions.
In the lighting solutions, GIBSS replaces incandescent florescent and Halogen technology with LED and induction technology. They reduce energy consumption by almost 80% without compromising on the brightness of the light or the aesthetics. Most importantly, the life of these systems is almost 20 times longer. For example, a tube light in a residential home which consumes 40Watts could be replaced with a 10 -12 Watt tube light without compromising on the brightness. The Gibss tube light has a life of fifty thousand hours. So even with a 24 hour operation, the tubelight would last five years as opposed to a traditional lamp which would cease to operate in six months. GIBSS offers lamps for all applications within every building vertical, be it hospitality, commercial, industrial, health care or residential buildings
Despite impressive payback, a number of businesses are challenged by limited capital budget to pursue energy efficiency projects in their buildings. To combat this challenge, we offer affordable solutions to our clients. We offer the Zero Initial investment Model, which effectively means that Client pays for the project from the operating budget rather than the capital budget. Gibss uses the stream of income from the cost savings to pay the costs of the project, including the costs of the investment. The remuneration is clearly based on demonstrated performance. Gibss will retain an on-going operational role in measuring and verifying the savings over the financing term.
We also offers performance bank guarantee, which protects the client from maximum financial exposure on the project. With this guarantee, we commit to bridge the gap between engineering calculations and actual performance of the equipment.
Finally and most importantly, we also offer a buy back scheme. Most often, the main concern of a client is the sustainable and secure disposal of the existing system. For such concerns, we buy these systems from the client at a fair market value. For systems that are in working condition we have a network of small contractors who use these systems till they die. For non-working systems, disposal is done through safe non-hazardous channel. We also provide the client with a certificate of safe disposal that they can produce to the relevant authorities or utilize towards green building (LEED) points under the LEED rating system.