Library Subscription: Guest
Home Archives Thermal Letter Officers Future meetings Assembly for International Heat Transfer Conferences
International Heat Transfer Conference 16

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

EFFECT OF PREHEAT ON HIGH-TEMPERATURE STEAM GENERATION IN AN ADSORPTION HEAT TRANSFORMER BY USING COMPOSITE ZEOLITE-WATER PAIR

Bing Xue
Department of Process Equipment and Control Engineering, Zhengzhou University, Science Avenue 100, Gaoxin District, Zhengzhou, 450001, China

S. Ye
Zhengzhou University, Science Avenue 100, Gaoxin District, Zhengzhou, 450001, China

L. S. Zhang
Zhengzhou University, Science Avenue 100, Gaoxin District, Zhengzhou, 450001, China

X.L. Wei
Zhengzhou University, Science Avenue 100, Gaoxin District, Zhengzhou, 450001, China; Research Center on Technology and Equipments for Thermal Energy Saving, Science Avenue 100, Gaoxin District, Zhengzhou, 450001, China

DOI: 10.1615/IHTC16.mtr.023289
pages 5811-5818


KEY WORDS: Heat transfer enhancement, Adsorption and desorption, high-temperature heat transformer, zeolite 13X, steam generation

Abstract

A novel zeolite-water adsorption heat transformer system based on a direct-contact heat exchanger method has been proposed to generate high-temperature steam. In this study preheat process was introduced to enhance the high-temperature steam generation with composite zeolite-CaCl2 and water working pair. The system consists of two processes: generation with input water at an average of 72°C and regeneration with dry air at 130°C. Steam is generated at 220°C during generation process. Gross temperature lift reaches 126°C in this single stage adsorption heat transformer system. The Maximum temperature for steam generation keeps constant despite of the preheat process in advance. Mass of generated steam elevates with preheat process. Time ratio of effective steam generation to the whole process dramatically increases with a short preheat process. Both COP and SHP are improved with preheat process.

Purchase $25.00 Check subscription Publication Ethics and Malpractice Recommend to my Librarian Bookmark this Page