TV Service. Waste Energy for Megacities. Voice-over. Länge: 07:34 Format: 1080-i/50 Datum: Projekt Nr.: 11_0014 Archiv Nr.

Transcription

1 Film title: Waste Energy for Megacities Länge: 07:34 Format: 1080-i/50 : Projekt Nr.: 11_0014 Archiv Nr.: 257 TC Text 00:00:00 Urbanisation is spreading worldwide with breathtaking speed: Even today more than half of the world's population lives in cities. The rapid urbanisation involves major challenges: their hunger for energy and the amount of waste of these Megacities require solutions based on innovative technologies and forward planning.. 00:25:00 00:39:00 Statement Dr. Rainer Nolte, Inst. for futures Studies and Technology Assessment: Within 20 years we will have 2 billion more urban dwellers and that will have significant impacts on resources, energy consumption, greenhouse gas emissions, transport systems and so on. Statement Dr. Rainer Nolte, Inst. for futures Studies and Technology Assessment: Some Megacities virtually emerged from the drawing board, these cities, at least according to current standards, are well planned and controllable, they have been developed according to plan. Even their growth is organised correspondingly. Other cities spread wildly and under huge pressure for urbanisation due to the needs of surrounding regions. In this case the controllability is zero. Statement, :

2 The city of the 21st century has to be reinvented. The engineering sector provides comprehensive solutions that consider the whole picture: energy and logistics likewise. 01:13:00 The potential is enormous: In emerging nations and developing countries big parts of the infrastructure need to be rebuilt. Mumbai registers up to 300 kg waste per person per year. The region experiences a lack of modern plants for automatic or semiautomatic recycling. The separation of valuable waste or the conversion of waste into energy or fuel is widely unknown. 01:39:00 But even highly developed industrialised countries are experiencing the effects of increasing urbanisation: towering office blocks, factories, or private homes are real energy gobblers. The supply of buildings with energy, heat and cold accounts for 30 % of Europe s total energy demand. 02:01:00 Office blocks live: they inhale and exhale huge amounts of air. In the best case they are planned for decades into future including accurate energy calculations. Their climate control affects costs and benefits. 02:16:00 Statement Dr. Hugo Blaum, GEA Refrigeration Technologies: If there is a lot of outside glass we need shadings, then we have to decide on appropriate technologies. We need to knoe: What is the use of the building? How many people are inside? Are there many computers.? All these things affect the heat loads and thus the technology for their distribution, that means the foundation stone, the DNA of the building is laid during the planning 02:37:00 Everything that is happens here affects the system; for example, when employees use the lift, turn on the light in their offices or switch on their computers. Computer controlled air-conditioners take in fresh air that has to be heated or cooled down, humidified or dehumidified, according to needs. We also make sure that no valuable

3 energy is lost. 03:04:00 Statement Marc Pönitz, GEA, Bochum: Within our climate control systems we already use waste heat in order to feed it into other systems. On this basis we will concentrate even more on applying sustainable economic principles to our future projects and to offer appropriate solutions. 03:18:00 The organism of such a building is very sensitive to changes such as changes within a room or new floor plans. 03:28:00 Statement Marc Pönitz, GEA Group: If we want to adapt a room to a different use we have to calculate the future field of application of the system we have to consider the air volume, the number of people that will work here, at what times, the course of the sun, additional windows. All this has to be adapted to the system in order to optimize it. 03:46:00 Statement Dr. Hugo Blaum, GEA Refrigeration Technologies: If you consider that buildings account for 30 % of Germany s total demand for primary energy, you will admit that it is a huge potential. 03:56:00 Energy from waste: Over the past few years many methods of treating waste have been developed. One of these methods is the combustion of household waste in incineration plants in order to produce steam or electricity. 04:12:00 Statement Dr. Bernard Fischer, Kraftwerke Mainz-Wiesbaden AG: Waste is an energy source. We burn waste without initial fire that means that the waste is combustible in a self-sustaining manner and thus it actually is a combustible. 04:25:00 By far the largest part of the high-pressure steam that is produced in this plant arrives at the neighbouring power plant through a winding convuluted pipe system. A smaller part drives a turbine that provides the necessary energy for the operation. The rest is fed into the public grid.

4 04:43:00 Modern incineration plants are characterised by a low energy-consumption of the facility itself; and they are highly efficient. 04:51:00 Statement Dr. Bernard Fischer, Kraftwerke Mainz-Wiesbaden AG: That means that about 70 percent of the combustible waste that is fed into the plant can be used as electrical energy or as process steam for a subsequent application. 05:07:00 Every household produces organic waste each day. Thanks to new technologies biogas can be obtained from green waste via biological and mechanical processes. That is one possibility to solve both the energy problem and the waste problem of Megacities. 05:24:00 Germany alone registers about eight million tons of bio and green waste a year. Biogas consists largely of methane. It is generated by fermentation of waste. With a gas yield of 90 cubic meters biogas per ton bio waste this results in a total of 720 million cubic meters. This gas provides 3,9 billion kilowatt hours which correspond to about 5 percent of Germany s annual power requirement. However, in order to solve the pressing problems of Megacities we need more comprehensive solutions: 06:05:00 Statement, : Of course, the development of Megacities it a gigantic challenge. But the engineering industry has braced itself for such an agenda, particularly in Germany. The sector has considerable experience, deep knowledge and a most trusted name particularly in the fields of energy efficiency, logistic systems and in infrastructure. 06:24:00 Statement Dr. Bernard Fischer, Kraftwerke Mainz-Wiesbaden AG: For conurbations we need a combination of recycling and thermal utilisation of residual waste. On the one hand because it is possible to feed certain parts of waste via separate collection into a recycling process and on the other hand because there are always components within the waste that are particularly adapted for thermal recycling. 06:54:00 Masdar City, a city from the drawing board that is being built in the deserts of Abu

5 Dhabi shows what a resource-conserving future might be like. Companies from all over the world are to provide technologies for Masdar City, among them leading German companies. Again, the goal is to convert green waste into bio fuel. The vision is ambitious: 50,000 people are to live and to work in Masdar City without damaging the environment with carbon dioxide or waste. 07:24:00 A project that points the way for how, in the futures, cities can function with an intelligent interaction between buildings and energy technology. 07:34:00 End