#active techniques

With increasing global warming, the temperature of the atmosphere is also increasing. Given such climate conditions, it becomes compelling to limit the use of artificial energy sources and find ways to help us control the temperature of a place. This paper deals with reducing the energy consumption of a building without affecting its required temperature by combining different building orientations using an information system. It gives a clear picture of the best suited situation for a particular place. We have used the design software and incorporated factors such as the orientation of the building. It will provide us with the required amount of artificial energy, taking the ideal temperature of the building into account. It will also tell us the difference this setup can make in the long term cost of the building. If these parameters are taken into consideration before building design, better returns in terms of energy savings and long term financial benefits can be achieved. 

Many industrial application including power plants, chemical, refrigerator and air conditioning systems use heat exchangers to remove excess generated heat out of the system. Heat exchangers have several industrial and engineering applications. The design procedure of heat exchangers is quite complicated, as it needs exact analysis of heat transfer rate and pressure drop estimations apart from issues such as long-term performance and the economic aspect of the equipment. Heat transfer augmentation techniques refer to different methods used to increase rate of heat transfer without affecting much overall performance of the system. These techniques broadly are of three types viz. passive, active and compound techniques. The present paper includes various heat transfer augmentation techniques. A literature review of heat transfer augmentation has been included. This paper presents a review of published works on the heat transfer enhancement by active and passive methods.