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The Exprimental Parameters Effect on The Performance of Cromer Wheel System in Airconditioning Unit | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 30, Issue 12, 2012, Pages 2044-2057 PDF (375.73 K) | ||
| DOI: 10.30684/etj.2012.57247 | ||
| Authors | ||
| Ahmed J .Khaleel; Ahmed Q .Ahmed; Fawziea M.Hussien; Ahmed A.M.Saleh | ||
| Abstract | ||
| The main aim of the present study is to design and test the dehumidify system for air-conditioning unit and testing rig to find out the performance of using polymer technique to control the inside conditions, that are represented by relative humidity and temperature in testing room by using desiccant wheel (Cromer cycle), and testing the effect of some parameters which can improve the performance of this system. An air-conditioner unit of 2tons capacity was installed in this system and used one type of desiccant material (silica gel) was used in this work. Two thicknesses of desiccant material and two widths (channels depth) were studied 3.5mm with channel depth 5cm and 2.5 mm with channel depth 20 cm and wheels diameter of 90cm.Four rotational speeds for desiccant wheel were studied (36, 45, 60, and 90) rph and the regeneration temperature was used to control the inlet regeneration air temperature using a number of electrical heaters. The series of test showed that, the best COP, efficiency and relative humidity control within the conditioned space was for the silica gel at thickness 2.5mm and channel depth 20cm. The maximum adsorption and desorption rate was 0.5427g/kg and 1.322g/kg respectively at 36 rph and (36.5 oC) regeneration temperature and the best COP of A/C was about (5.12) at 36 rph and (42 oC) regeneration temperature. Experimentally the best sensible and total efficiency that can be achieved was (18.1%) and (17.98%) at 45 rph and (30.6 oC) regeneration temperature and (17.88%), (17.76%) at 36rph and (30.91oC) regeneration temperature. The best latent efficiency was (6.2 %) at 45 rph and (43.26 oC) regeneration temperature | ||
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