| Energy is the material basis of the social civilization and economic development.With the rapid development of economy and the increase of population, the consumption of energy is larger and larger, the problem of energy shortage has become the main resistance of the society development. In order to solve this problem,people are developing new energy and renewable energy, meanwhile, the recovery and utilization of waste heat is also attracted more and more attentions. The temperature of shower water is about 40~45℃, after bathing, some energy of the shower water is lost, while the temperature of the shower water which falling down on the ground is still about 30~35℃. thus, up to 70 percent energy of the shower water is waste.Aiming at the characteristics of the shower waste water, this paper designed a experimental system to recovery the waste heat of shower water waste based on the theory analysis and calculation. Using the high temperature water to heat the low temperature water by heat exchanger, to reduce the electric energy consumption, at the same time, prolong the bath time.In this paper, the influences of the heat exchanger‘s diameters on the prolonging bath time and the saving energy are studied, the results show that, the goal which recovering waste heat from shower water, prolonging the bath time and saving electric energy can achieved. By comparing the performance of the experimental system like the prolonging bath time, the saving electric energy and the heating rate when using four types heat exchange pipe diameter like 6mm, 8mm, 10 mm and12mm respectively, we found that the 10 mm diameter heat exchanger pipe can make the system get the best performance. |
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