LONGO GIOVANNI ANTONIO

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Structure Department of Management and Engineering
Telephone 0444998726
Qualification Professore ordinario
Scientific sector ING-IND/10 - TECHNICAL PHYSICS
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Office hours
Wednesday from 09:00 to 11:00 Studio
(updated on 14/04/2014 13:08)

Proposals for thesis
- exerimental measurement of heat transfer coefficients and pressure drop in low GWP refrigerant condensation and vaporisation
- experimental measurement of thermodynamic and thermopysical properties of hygroscopic salt solutions
- refrigerant condensation and vaporisation inside brazed plate heat exchangers

Curriculum Vitae
Giovanni A. LONGO, born November 27, 1961, is Professor of Technical Physics at the University of Padova where he gives lectures on Applied Thermodynamics and Heat transfer in Electronic Equiments. Giovanni A. LONGO is head of the Department of Management and Engineering since 2012, where he has in charge the Heat Technology Laboratory and the Nano-Heat Transfer Laboratory. He is vice-president of the commision E1 - Air Conditioning of the International Institute of Refrigeration since 2016, member of the Scientific Committee of the International Sorption Heat Pump Conference since 2008 and he was chair of the International Sorption Heat Pump Conference 2011. He is member of the Academic Senate of the University of Padova since 2015 and he was member of the Scientific Committee of the University of Padova from 2008 to 2012. Moreover he was member of the evaluation committee of the conservatory “A. Pedrollo” in Vicenza from 2012 to 2018 and member of the qualification committee for the national scientific qualification as associate or full professor in Italian universities of technical physics and nuclear engineering from 2016 to 2018. He acts as a reviewer for several international journals, including International Journal of Heat and Mass Transfer, International Journal of Refrigeration, Applied Thermal Engineering, Solar Energy, Experimental Thermal and Fluid Science, International Journal of Energy Research, International Journal of Thermal Sciences.
The research activity of Giovanni A. LONGO deals with two-phase heat transfer, absorption systems and nano-fluids heat transfer. The research on two-phase heat transfer concerns refrigerant condensation and vaporisation inside and outside enhanced and plate heat exchangers. The research on absorption systems concerns both the analysis of traditional absorption machines and the study of sorption dehumidification of air by liquid desiccants. The research activity on nano-fluid heat transfer deals with the measurement of heat transfer coefficients and pressure drop during single phase heat transfer inside tubular and plate heat exchangers together with the measurement of the thermodynamic and thermophysical properties of nano-fluids.
Giovanni A. LONGO is author or co-author of more than 220 scientific papers published in referenced national and international journals or presented at national and international congresses and conferences and of two international patents.

Research areas
- two-pase heat transfer
- sorption systems
- nano-fluid heat transfer

Publications
1. G. Righetti, C. Zilio, S. Mancin, G.A. Longo, Heat pipe finned heat exchanger for heat recovery: experimental results and modeling, Heat Transfer Engineering, 2018, in Press. Scheduled for 2018, vol. 39 (12).
2. G.A. Longo, L.Ortombina, M. Zigliotto, Application of Artificial Neural Network (ANN) for modelling H2O/KCOOH (potassium formate) dynamic viscosity, Int. J. Refrigeration, (2018), vol. 86, pp. 435-440.
3. S. Mancin, C. Zilio, G. Righetti, L. Doretti, G.A. Longo, Saturated R134a Flow Boiling inside a 4.3 mm ID Microfin Tube, Science and Technology for the Built Environment, (2017) vol. 23, pp.933–945.
4. G.A. Longo, S. Mancin, G. Righetti, C. Zilio, HFC404a condensation inside a small brazed plate heat exchanger: comparison with the low GWP substitutes propane and propylene, Int. J. Refrigeration, 2017, vol. 81, pp. 41–49.
5. G.A. Longo, S. Mancin, G. Righetti, C. Zilio, Hydrocarbon refrigerants HC290 (propane) and HC1270 (propylene) low GWP long-term substitutes for HFC404a: a comparative analysis in vaporisation inside a small-diameter horizontal smooth tube, App. Thermal Eng, 2017, vol. 124, pp. 707–715.
6. G.A. Longo, S. Mancin, G. Righetti, C. Zilio, Flow dynamic and energetic assessment of a commercial micro-pump for a portable / wearable artificial kidney: peristaltic vs. diagphram pumps, Thermal Science and Engineering Progress, 2017, vol. 3, pp. 31–36.
7. G.A. Longo, C. Zilio, L. Ortombina, M. Zigliotto, Application of Artificial Neural Network (ANN) for modeling oxide-based nanofluids dynamic viscosity, Int. Comm. Heat and Mass Transfer, 2017, vol. 83, pp. 8–14
8. L. Doretti, G.A. Longo, S. Mancin, G. Righetti, C. Zilio, Flow boiling heat transfer on a Carbon/Carbon surface, Int. J. Heat Mass Transfer, 2017, vol. 109, pp.938–948.
74. G.A. Longo, S. Mancin, G. Righetti, C. Zilio, Saturated vapour condensation of HFC404A inside a 4 mm ID horizontal smooth tube: comparison with the long-term low GWP substitutes HC290 (propane) and HC1270 (propylene), Int. J. Heat Mass Transfer, 2017, vol. 108, pp.2088–2099.
9. S. Mancin, G. Righetti, C. Zilio, G.A. Longo, A Review on In-tube Two-Phase Heat Transfer of HFO Refrigerants, Science and Technology for the Built Environment, 2016, vol. 22, pp. 1191–1225.
10. G.A. Longo, S. Mancin, G. Righetti, C. Zilio, HFC404A vaporisation inside a Brazed Plate Heat Exchanger (BPHE): comparison with the long-term low GWP substitutes HC290 (Propane) and HC1270 (Propylene), Applied Thermal Eng., 2016, vol. 108, pp. 1401–1408.
11. G.A. Longo, S. Mancin, G. Righetti, C. Zilio, HFO1234ze(E) vaporisation inside a Brazed Plate Heat Exchanger (BPHE):comparison with HFC134a and HFO1234yf, Int. J. Refrigeration, 2016, vol. 67, pp. 125–133.
12. G.A. Longo, G. Righetti, C. Zilio, Development of an innovative raw milk dispenser based on nanofluid technology, Int. J. Food Engineering, 2016, vol.12, pp.165-172.
13. G.A. Longo, S. Mancin, G. Righetti, C. Zilio, Saturated flow boiling of HFC134a and its low GWP substitute HFO1234ze(E) inside a 4mm horizontal smooth tube, Int. J. Refrigeration, 2016, vol. 64, pp. 32-39.
14. G.A. Longo, A. Gasparella, Experimental measurement of thermophysical properties of H2O/KCOOH (potassium formate) desiccant, Int. J. Refrigeration, 2016, vol. 62, pp- 106-113.
15. G.A. Longo, S. Mancin, G. Righetti, C. Zilio, HFC32 and HFC410a flow boiling inside a 4mm horizontal smooth tube, Int. J. Refrigeration, 2016, vol. 61, pp. 12–22.

Lecturer's Publications (PDF): E33B0B51E89546592ED4DC89A2E366D6.pdf

List of taught course units in A.Y. 2018/19
Degree course code (?) Degree course track Course unit code Course unit name Credits Year Period Lang. Teacher in charge
IN0531 COMMON IN03109444 9 1st Year First
semester
ITA GIOVANNI ANTONIO LONGO