Open AccessExperimental Study of A LiCl-H2O Bubble Pump Solar Absorption Cooling System
Author(s) -
Noora A. Hashim,
Muna S. Kassim
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1094/1/012017
Subject(s) - evaporator , condenser (optics) , nuclear engineering , water cooling , materials science , water flow , parabolic trough , solar energy , thermal , absorption (acoustics) , volumetric flow rate , environmental science , thermodynamics , mechanics , physics , electrical engineering , optics , environmental engineering , composite material , engineering , heat exchanger , light source
An experimental test rig is constructed and designed according to the results obtained from a thermodynamics model solves by EES software assuming a constant generator, condenser, absorber, and evaporator temperatures to study a bubble pump’s performance solar absorption cooling system. The whole system consists of a parabolic trough solar collector, a generator, a condenser, an absorber, an evaporator, and a cooling water system. The used PTC area is designed according to the quantity of thermal energy required to operate the bubble pump cooling system and the minimum solar radiation incident at Kufa city (Najaf/Iraq), which lies on (32°N and 44°E). A modification is added to the collector receiver to ensure water exposure to solar energy for a longer time. The weather features that affected system performance like the solar radiation incident and the ambient temperature are measured for each test. The maximum recorded receiver temperature is 122 °C without water flow, and it is reached to 90.5°C as a maximum in case of water flow through the receiver. The water in the storage tank is reached to 89 C as a maximum. The collector thermal efficiency reaches its maximum value of 69.2 % for a water flow rate of 0.3315 kg/s, while the maximum efficiency at 0.189 kg/s is 68.3%. The maximum recorded generator temperature is 87°C, and at the same test, a minimum evaporator temperature of 17°C is obtained at an ambient temperature of 46.8 °C.