A special solar collector for ammonia-water absorption refrigeration | |
| Author | Tsai, Sing-Tsu |
| Call Number | AIT Thesis no. ET-81-6 |
| Subject(s) | Solar energy research Refrigerators |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | A new design for the generator-absorber in the form of a flat-plate solar collector having 13 mm risers thermally attached to a black plate 2 m long by 0.3 m wide and two 50 mm return tubes acting as a solution reservoirs has been constructed and tested. Fast heating and distillation of ammonia occurs due to the low heat capacity of the plate, while rapid cooling of t he generator and reabsorption of ammonia during -refrigeration at night is obtained by removing the back insulation. Using 10.1 kg of aqua-ammonia with ammonia concentration 46% by weight, l. 5 kg of ammonia could be distilled on a typical day, and 3 kg could be distilled with the helps of booster mirrors in the collector. This yield is a considerable improvement on yields from previous designs in AIT. Estimates of the thermosyphon velocity show that in bright sunlight, the solution in the collector circulates once per minute. |
| Year | 1981 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Energy Technology (ET) |
| Chairperson(s) | Exell, Robert H.B.; |
| Examination Committee(s) | Saunier, G.Y. ;Walter, Despiegelaere, Ir. ;Bhattacharya, Sribas C. ; |
| Scholarship Donor(s) | RSEA, ROC; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1981 |