JOINT STUDY ON THE SOLAR-DRIVEN CHEMICAL HEAT PUMP

本项目为日本文部科学省资助的日美国际合作研究项目。本项目从1994财政年度开始，历时两年，以太阳能热能为主要能量输入，开发了一种将80ºC以下的低热量储存到200ºC左右的高热量的工艺。该项目的主要目标是研究太阳能驱动化学热泵的工艺可行性，该热泵将日本正在开发的化学热泵系统与美国正在开发的太阳能电池板和工艺接口技术相结合。该项目结合了两国进行的许多孤立的研究活动，并通过合作研究和分享研究成果有效地利用了它们。本项目所提出的工艺在减少工业排放到环境中的二氧化碳方面也具有很大的潜力，其节能效果更可应用于工业大量低热量的高效利用。为了提高热效率，使该系统有效地利用太阳能，必须解决许多技术问题。本项目计划在美国和日本已经完成的以下工作的基础上，开发新技术，克服热效率低的瓶颈，实现利用太阳能的新型化学热泵。美国正在开发的太阳能接收器和控制的太阳能利用技术。日本正在开发的化学热泵技术。日本正在开发的高导热板型催化剂技术。平板式催化反应器、内热一体化蒸馏塔等新型装置操作。利用安装在各研究实验室的ASPEN PLUS过程模拟器进行化学过程的能量和火用分析。美国和日本正在讨论新的工艺设计。最后，提出了提高该化工热泵系统热效率的几个关键技术。少

This is a project for a international cooperative research program between Japan and USA financially supported by the Ministry of Education, Science, Sports and Culture in Japan. This project was two years program from 1994 fiscal year to develop a process to storage the low-level heat under 80 ﾟC and to upgrade it to the highlevel heat around 200 ﾟC using solar thermal energy as the primary energy input. The major objective of the program was to investigate a process feasibility of a solar-driven chemical heat pump, which was combined a chemical heat pump system being developed in Japan with solar panel and process interface technologies being developed in USA.This project has combined many isolated research activites conducted in the two countries and made effective use of them by cooperative research and sharing of research results. The process proposed in this project has also a big potential for decreasing CO_2 emission into the environment from industries by the energy saving cau … More sed by application to the efficient utilization of huge amounts of low-level heat exhausted from industries. Many technological problems must be solved to improve the thermal efficiency and to apply this system for effective utilization of solar energy. This project was planed to build on the following works already done in the USA and Japan and to make new technologies to overcome a wall of low thermal efficiency and to make realize new type of chemical heat pump using solar energy.1. Solar utilization technologies of solar receivers and control being developed in the USA.2. Chemical heat pump technologies being developed in Japan.3. Technology of plate-type catalyst with high thermal conductivity being developed in Japan.4. New type of unit operations such as plat type catalytic reactor and internal heat integrated distilllation column.5. Energy and Exergy analysis of chemical process by using ASPEN PLUS process simulator installed in each research laboratories.6. New process designs being discussed between USA and Japan.As a conclusion, several key technologies was recommended to be introduced for improving thermal efficiency of this chemical heat pump system. Less