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Nadaf et al., International Journal of Advanced Engineering Technology E-ISSN 0976-3945 Abhilash Pathania reported the application of radiator hot water to run the refrigeration system as in figure 5 above. R. J. Yadav reported that the exhaust gases of these gensets have a very large amount of heat at about 700 oC at full load and waste heat of coolant at about 120 o C can be exploited to run a central air conditioning plant based on vapour absorption chiller. And concluded that the vapour absorption chiller based central air conditioning plant can be run by tapping waste heat of the exhaust (14.5 TR ) and coolant heat (15.5 TR ) of 125 HP genset. The energy cost may reduce approximately by 35 %. Koehler et al. designed, built and tested a prototype of an absorption refrigeration system for truck refrigeration using heat from the exhaust gas heat which can replace the conventional compression refrigeration system. The refrigeration cycle was simulated by a computer model and validated by test data. Yousef and Najjar,(1996) experimental research shows that it is feasible to drive refrigeration system with automobile engine exhaust waste heat. Horuz, (1999),Manzela et al.,(2010) studied ammonia- water absorption refrigeration system with automobile engine exhaust waste heat drive, and analyzed its economic feasibility. Hilalil and Soylemez (2008) studied the structure of the vehicle exhaust-driven refrigeration system, and conducted optimized calculation of its waste heat recovery rate and operation economical efficiency. Wu and Schulden (1995) studied improved Carnot-Cycle heat engine driven by high-temperature waste heat and found the relation of a temperature range of high-temperature waste heat and the maximum specific power. Yoon et al. (2003) studied the exhaust waste heat driven refrigeration system. The highly energy-saving technology with exhaust waste heat has the remarkable effect in food. Kaudinya J.V et al.(1988) studied the feasibility of vehicle air-conditioning by exhaust gas operated open cycle absorption cooling system and it has been shown that the cooling potential in the exhaust gas is much greater than the required for cooling of the vehicles interior space. Vincent Mei et al. (1982) reported that truck exhaust gas operated refrigeration system can suitable installed and successfully operated for low temperature application. Zhao et al. (2003) studied two combined absorption/compression refrigeration cycles using ammonia and water as the working fluid. The combined cycle with one solution circuit was a conventional absorption chiller with a mechanical compressor, using both the work and heat output from an engine. R.Q.Zhu, M.Suzuki (2011) studied the feasibility of adsorption cooling for automobile/engine waste heat recovery. Wu and Schulden(1995) presented a modified Carnot cycle for the application of air conditioning on a heat engine using high-temperature waste heat. Jiangzhou et al.(2002) presented an adsorption air conditioning system used in internal combustion engine locomotive driver cabin. The system consists of an absorber and a cold storage evaporator driven by the engine exhaust gas waste heat, and employs zeolite– water as working pair. Qin et al.(2007) developed an Int J Adv Engg Tech/Vol. V/Issue IV/Oct.-Dec.,2014/31-39 exhaust gas driven automotive air conditioning working on a new hydride pair. The results showed that cooling power and system coefficient of performance increase while the minimum refrigeration temperature decreases with growth of the heat source temperature. System heat transfer properties still needed to be improved for better performance. 3.4 Strengthened Environmental Restrictions During the last several decades internal combustion engine technology has achieved significant progress in reducing fuel consumption and exhaust emissions. In particular, strict emission regulation made it possible to reduce exhaust emissions of modern engines. Yoshihiro Ichiki(2011), of Mitsubishi Heavy Industries, Ltd. (MHI) has developed a super waste- heat recovery system for a main marine propulsion engine as a solution for strengthened environmental restrictions and increasing demand for improved fuel oil consumption. The newly developed super waste- heat recovery system consists of a conventional combined system and a power turbine (gas turbine) that utilizes a portion of the exhaust gas. This system increases the marine engine plant efficiency by 8%– 10%. While reducing Co2 emissions. Hou Xuejun(2012) analyzed the diesel engine exhaust gas components, emission rates and waste heat rates. Then, the mainly harmful components are analyzed and the corresponding methods of purification and processing about Z12V190 diesel engine exhaust gas pollution discussed. In order to achieve full recovery of waste heat, save energy, purify treatment pollution, the comprehensive process flows of Z12V190 diesel engine exhaust gas pollution processing and waste heat recovery are designed. Khan et al.(2002) reported that with features of being energy-saving and environment-friendly, the waste heat (WH) recovery and waste gas pollution processing have received significant attention. Approximately, 30 to 40% of the heat generated in the fuel combustion process is converted into useful mechanical work in contemporary internal combustion engines. Yang, Yuan, & Lin,(2003) set up practical heat pipe heat exchanger for heating HS663, a large bus. Giving comfort to passengers in cold, by conveying the heat of automotive exhausts gas into the bus carriage utilizing gravity assisted heat pipe in the heating using exhaust gas. 3.5 Preheating of Biodiesels It is found from the review Table 4 that, bio-diesel is the fuel rapidly growing in use, and if we use it in diesel engines then it should have good fluidity, low viscosity and good atomization which can only possible if it’s preheated. This preheating might be by high temperature exhaust gases coming out of the exhaust port, these exhaust gases if let free in to atmosphere can cause great trouble related to health. It is also a fact that use of some electrical mean to heat the fuel externally can cause extra cost of operating. So an idea extract from above is to design such a device which can eliminate the use of this external power and can also reduce the temperature of the exhaust gases to a greater extent.PDF Image | REVIEW ON WASTE HEAT RECOVERY FROM DIESEL ENGINES
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