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Evaluation and Design of Absorption Power Cycles

吸收动力循环的评估和设计

基本信息

批准号：
9011996
负责人：
Sanford Klein
金额：
$ 8.9万
依托单位：
University of Wisconsin-Madison
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1990
资助国家：
美国
起止时间：
1990-09-01 至 1992-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9011996&HistoricalAwards=false
关键词：
Evaluation Design Absorption Power Cycles

项目摘要

A research plan is proposed which will result in a thorough evaluation of absorption power cycles and a methodology for designing optimum power cycles. The research will specifically focus on power cycles operating with low temperature heat sources, such as solar or geothermal energy, or the energy rejected from higher temperature cycles. The utility of the universal efficiency concept, as a model leading to economically sound power cycle designs, will first be evaluated. According to the universal efficiency concept, the maximum power of simple cycles subject to heat transfer irreversibilities may be explicitly determined. The effect of additional thermodynamic irreversibilities on the efficiency at maximum power will be examined with the intent to develop a realistic goal for the efficiency of well-designed power cycles. A detailed evaluation of several absorption power cycles will be made by comparing their first and operating costs with those of conventional power cycles. Particular attention will be paid to absorption power cycles in which energy transfers to and from the cycle involve streams having finite thermal capacitance rates. The comparisons will include a consideration of realistic parasitic losses. It is clear that heat exchange is of primary importance in the design of optimized cycles. Heat exchanger network synthesis methods will be used to identify improved power cycles designs and to establish a general methodology for designing these cycles.

提出了一项研究计划，该计划将进行彻底的研究吸收功率循环的评估和设计最佳的动力循环。这项研究将特别关注低功率循环温度热源，例如太阳能或地热能，或从较高温度循环中排出的能量。的普遍效率概念的效用，作为一种模式，导致经济合理的动力循环设计，将首先被评价。根据普遍效率概念，传热条件下简单循环的最大功率可以明确地确定不可逆性。的影响对效率的附加热力学不可逆性在最大功率将进行审查，目的是制定一个设计良好的电源效率的现实目标自行车. 几种吸收能力的详细评价将通过比较它们的第一个和操作周期来进行成本与传统的动力循环。特别将注意吸收功率循环，其中进出循环的能量传递涉及具有以下特征的流有限热容率比较将包括考虑实际寄生损耗。是很明显，热交换是最重要的，优化循环设计。换热网络综合方法将用于确定改进的动力循环设计并建立设计这些的通用方法自行车.