Performance comparison of conventional and chilled ceiling/displacement ventilation systems in Kuwait.(Report): An article from: ASHRAE Transactions

This digital document is an article from ASHRAE Transactions, published by American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. on January 1, 2009. The length of the article is 5485 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.

From the author: The validated model and design guidelines for the CC/DV system are applied to a case study in Kuwait to design a system for a typical office space of dimensions 5 m x 10 m x 3 m. A design procedure based on Ghaddar et al. design charts was followed to size each of the two subsystems (chilled ceiling and displacement ventilation) and determine the chilled ceiling load removal ratio R to the total room load such that thermal comfort and stratification height are attained at the peak load [Ghaddar et al. (2008)]. The CC/DV chiller system size is compared with the size of a conventional mixed convection system at 30% and 100% fresh air supply ratios. It is found that the size of the CC/DV system is 9.69 kW compared to conventional system size of 6.9 kW at 30% fresh air supply ratio and 19.8 kW 100% fresh air supply ratio, respectively. For the same indoor air quality and thermal comfort level, the CC/DV system consumed 53% less cooling energy than the conventional system at 100% fresh air system over the cooling season. The initial cost of the CC/DV system is higher, but the payback period based on transient operation is less than 3 years when used to replace a 100% fresh air conventional system.

Citation Details
Title: Performance comparison of conventional and chilled ceiling/displacement ventilation systems in Kuwait.(Report)
Author: Ammar Bahman
Publication:ASHRAE Transactions (Magazine/Journal)
Date: January 1, 2009
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 115 Issue: 1 Page: 587(8)

Article Type: Report

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