Document Details Document Type : Article In Journal  Document Title : Performance Analysis of a Combined Heat Pump-Dehumidifying System تحليل أداء نظام مزدوج لمضخة حرارة وإزالة رطوبة   Subject : Mechanical Engineering  Document Language : English  Abstract : During the past few decades, all Gulf States have experienced a rapid growth in living standard, which was naturally associated with rapid increase in demand for electricity and potable water. Due to changes of living style, large portion of the electric power was consumed for air conditioning (A/C). Lack of natural water resources and striving needs for water made desalination the main technology to provide potable water. In an effort to search for a novel method for producing fresh water, the present paper investigates a combination of a heat pump (HP) with a dehumidification process to extract water from the atmospheric air. The unit supplies 1.586 m3/s air to an office building (250 m2 area) by the sea side in Jeddah, Kingdom of Saudi Arabia (KSA) where the average ambient temperature is 34oC and relative humidity of 71%. The unit has two series evaporator-coils to maximize the water condensation process by reducing the air exit temperature to 8 oC. The performance of the combined HP-Dehumidifying unit has been investigated for one year employing measured climatic conditions for representative days of the months. The maximum water production was in September (2.23 m3/day) and the least was in January (0.618 m3/day). The power consumed by the unit was determined and the mean specific power rate was 0.42 kWh/liter of fresh water. The pilot unit was purchased at a relatively high cost that raises the fixed charges rate, the estimated maximum water cost was 23 $/m3 for electricity rate of 0.045 $/kWh. A more realistic estimate based on sharing the expenses between the A/C and water production processes reduced the water cost to 13.5 $/m3 (50.6 Saudi Riyal/m3). The combined A/C- Dehumidifying unit can be efficient for resort areas of high humidity, low water demand and need for air conditioning.  ISSN : 1319-1047  Journal Name : Engineering Sciences Journal  Volume : 21  Issue Number : 1  Publishing Year : 1431 AH 2010 AD  Article Type : Article  Added Date : Tuesday, April 5, 2011  Researchers Researcher Name (Arabic) Researcher Name (English) Researcher Type Dr Grade Email بدر أحمد حبيب الله Habeebullah, Badr A. Researcher Doctorate bhabeeb@kau.edu.sa Files File Name Type Description  29564.pdf pdf Performance Analysis of a Combined Heat Pump-Dehumidifying System Back To Researches Page