contributor author | Jingming Dong | |
contributor author | D. A. Pounds | |
contributor author | P. Cheng | |
contributor author | H. B. Ma | |
date accessioned | 2017-05-09T00:54:30Z | |
date available | 2017-05-09T00:54:30Z | |
date copyright | September, 2012 | |
date issued | 2012 | |
identifier issn | 1948-5085 | |
identifier other | JTSEBV-926075#031004_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/150273 | |
description abstract | A steam ejector refrigeration system with a movable primary nozzle was developed in order to determine the nozzle exit position (NXP) effect on the coefficient of performance (COP). Experimental results show that there exists an optimum NXP for the ejector system investigated herein. The effects of the operating temperature, diffuser size, nozzle throat diameter, and mixing chamber configuration on the COP and critical back pressure were investigated experimentally. It is found that the critical back pressure and COP can be increased by increasing the low temperature evaporator (LTE) temperature and pressure. Although an increase of the high temperature evaporator (HTE) temperature can increase the critical condenser pressure, the system COP does not increase as the HTE temperature increases. The diffuser size significantly affects the critical back pressure but had almost no effect on the system COP. A finned mixing chamber was tested at NXP = 0 mm and NXP = 36 mm. Compared with the regular mixing chamber, the finned mixing chamber can increase the critical back pressure. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | An Experimental Investigation of Steam Ejector Refrigeration Systems | |
type | Journal Paper | |
journal volume | 4 | |
journal issue | 3 | |
journal title | Journal of Thermal Science and Engineering Applications | |
identifier doi | 10.1115/1.4006714 | |
journal fristpage | 31004 | |
identifier eissn | 1948-5093 | |
keywords | Pressure | |
keywords | Temperature | |
keywords | Diffusers | |
keywords | Ejectors | |
keywords | Nozzles | |
keywords | Refrigeration | |
keywords | High temperature steam AND Condensers (steam plant) | |
tree | Journal of Thermal Science and Engineering Applications:;2012:;volume( 004 ):;issue: 003 | |
contenttype | Fulltext | |