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 Wysłany: Wto 2:03, 21 Gru 2010 Temat postu: ugg milano Determine the two-temperature solution |
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Determine the two-temperature solution of ammonia-water absorption chiller recirculation criteria
Two temperature-level requirements of the ratio of cooling capacity and can not meet the value is approximately equal to or less than k conditions. Therefore, the solution circulation ratio occurred tower should not be any by the general formula (6) calculations. The author believes that the following aspects should be identified: (1) When the low-level cooling capacity / high temperature cooling capacity level k occurs when the tower by the type of solution circulation ratio (6) directly derived. No. 2O No. 5 Fluid Engineering (2) When the low-level cooling capacity / High-level cooling capacity occurs when the tower recirculation of the solution, not according to formula (6) to determine, because it can not meet the needs of low-level cooling capacity. In this case, to be established under the low pressure absorber component balance equation (5) separately, where the amount of care in accordance with the low stage refrigeration conversion ratio of total cooling capacity, resulting, the value of the type (6) calculated the value of the couch than large degree depends on the deviation of dry cooling capacity of the two temperature levels and the ratio of the deviation size. Obviously, in this case, in order to ensure the needs of low-level cooling capacity,[link widoczny dla zalogowanych], and increased into the low pressure absorber volume of dilute solution, while the absorber into the pressure also increases the amount of dilute solution, so that the pressure absorption device in the absorption: after the concentration reach saturation under design conditions. The concentration can be equation (5) calculated the value into (4) and obtained. Since the end of the pressure absorption by the solution concentration of less than saturation, thereby reducing the occurrence of the tower of the solution put gas range (the tower into the tower tank concentration and the concentration of the poor), reducing the occurrence of hot towers to run the economy , so that the system thermal coefficient (coP) decreased. 4 Conclusion (1) single-temperature ammonia-water absorption chiller solution circulation ratio is calculated by j should not be any strike for two-temperature ammonia-water absorption chiller loop system. (2) in the two-temperature ammonia-water absorption refrigeration system, when the low and high temperature level of cooling capacity equal to or less than the tower when the solution circulation ratio of its occurrence can be calculated single-temperature level, = 1 a, / (a {) to calculate, when the low and high temperature level of cooling capacity than> occurs when the tower is not the solution circulation ratio calculated by single-temperature stage, it must consider the impact of the ratio between the two. I believe that according to the established low-level components of the absorber balance relation (5), calculated separately, the value of the solution circulation ratio as the occurrence of the tower. \Materials include stainless steel, corrosion resistant cast iron, nickel alloy, aluminum alloy, copper alloy, titanium alloy. Highlighted in nitric acid, sulfuric acid. Hydrochloric acid,[link widoczny dla zalogowanych], phosphoric acid, acetic acid, alkali, urea, hydrogen, hydrogen sulfide: hydrogen fluoride, water, oil waste water,[link widoczny dla zalogowanych], ground water and other media under the conditions of a typical project, corrosion-resistant materials, the practical application of casting and forging techniques, casting and forging materials, various types of corrosion , corrosion-resistant measures, corrosion testing and corrosion failure analysis techniques. Appendix also lists the corrosion casting and forging materials, international and foreign standards such as ISO, ASTM, JIS, DIN, NF,[link widoczny dla zalogowanych], BS, FOCT and so on. Guide words l01.4 million, l6 open, 650 pages. Machine Press published in 1991, pricing 30 yuan, 34.50 yuan per copy by mail (including postal hanging fee). Address: Taiping Street, Xuanwu District, Beijing, A?,[link widoczny dla zalogowanych], Electrical & Mechanical Technology Development Department of the Ministry of General Machinery Research Institute, Tel: 3043951, telex: 2620. Postal Code 100050 Contact: Huang Hu. Books from the post office or bank money can be remitted, Bank: Beijing Industrial and Commercial Bank Caishikou branch. Account: 46217g a 64, soon after receiving the book sent. Electrical and Mechanical Technology Development Department of the Ministry of General Machinery Research Institute (Beijing)
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