| Author | Thavalingam, G. |
| Call Number | AIT Thesis no.ET-92-21 |
| Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | ViabHity of upgrading industria1 themal effluents using different types of multi-stage hc;1t pumps was investigated using technical and economical parameters. Malhe.rnatical models were developed for multi-stage vapor compression h eat pump and steam jet compressor while 'Grossman Absorption Model' was used to study multi-stage absorption heat trrmsformer. Cascadb1g stages of compression was fow1d to boost the performance of VCHP with water perfoming better than R J J, R 11 3 and R 11 4 as the refrigerant. Exponential increase of masR flow rate beyond a particul1u· temperature boost always limits the performance of steam jet compressors. Two stage double effect hea t transformer overcomes the limitation of temperature boost attainable by the single stage heat transfo1mer. Eleven different heat pump systems formulated were compared based on COP, primary energy ratio, prim1u·y energy saving, mmuity and dynamic pay back period. Economic analysis w1is carried out taking capitaJ cost, maintenance cost and operating cost into account. Most of the types of h eat plm1ps which were foW"Jd technically viable were also acceptable econ omicaJly. The economic analysis is not ri gorous due to r.he lack of updated and reliable cost data from manufacturers. One of the possible applica1fons of heat pwnps .in process industry namely clistillation process requiring low pressure steam with heating capacity of 7090 kW, was investigated for integrating heat pumps. A single stage absorptfon h eal transformer applied in this case can save US$ 256,740 annually and can pay back its investment in two years. |
| Year | 1992 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| 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) | Mohanty, Brnhmanand; |
| Examination Committee(s) | Exell, Robert H.B. ;Mora, Jean Claude; |
| Scholarship Donor(s) | The Government of Netherlands; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology |