个人网站设计毕业论文 制冷设计毕业论文_精品.doc

个人网站设计毕业论文 制冷设计毕业论文 导读：就爱阅读网友为您分享以下“制冷设计毕业论文”的资讯，希望对您有所帮助，感谢您对92的支持! Effect of hot water temperature Figure 3 shows the effect of the temperature of the hot water on the coefficient of performance (COP). It is clear that the two-stage LiBr absorption refrigeration cannot be operated if the outlet temperature of the LiBr aqueous solution, Th4 or Tl4, in the HP generator and LP generator is below 58°C, under the condition when the temperature of chilled water is 7°c and that of the condenser cooling water is 32°c. If the temperature difference between the inlet temperature of the hot water and the outlet temperature of the LiBr aqueous solution, Th4 or T14, in the HP generator and LP generator is assumed to be 15°C, then a two-stage LiBr/H20 absorption refrigeration system cannot be operated when the temperature of the hot water Thi, is under 73 °C. The COP of a two-stage LiBr/H20 absorption refrigeration system increases with the temperature of the hot water, but when the temperature Thi, is above 87 °C, or Th4 and T14 are above 72 °C, the increase of COP is very small. Because the heat loss increases when the temperature of the heat source, Thi, is increased, the temperature of the heat source Thi above 87 °C is not advantageous for a two-stage LiBr/H20 absorption refrigeration system. Figure 3 shows that the best temperature range of the heat source is between 75 °C and 87 °C for a two-stage LiBr/H20 absorption refrigeration system. Effect of chilled water temperature, Tch o The influence of different chilled water temperature Tcho on the COP of a two-stage LiBr/H20 absorption refrigeration system is shown in Figure 4. A two-stage LiBr/H20 absorption refrigeration system is more suitable for supplying chilled water of over 9 °C for air conditioning or other applications. If the temperature of the chilled water is under 7 °C, the COP is very small when the temperature of the cooling water is 32 °C. Effect of the temperature of cooling water, Twi The tempera