• Lopa Ghosh and G. N. Tiwari, Computer modeling of dissolved oxygen performance in greenhouse fish pond: an experimental validation, Int. J. of Agriculture Research, 3(2), 83 (2008)
• T. Das and G. N. Tiwari, Heat and mass transfer of greenhouse fish drying under forced convection mode, Int. J. of Agriculture Research, 3(1), 69 (2008)
• A Shukla, G. N. Tiwari and M.S. Sodha, Experimental study of effect of an inner thermal curtain in evaporative cooling system of a cascade greenhouse, Solar Energy, 82, 61 (2008)
• A. K. Tiwari and G. N. Tiwari, Effect of cover inclination and water depth on performance of a solar still for Indian climatic conditions, ASME, Journal of Solar Energy Engineering, 130, 1-4, May 2008
• Swapnil Dubey and G. N. Tiwari, Thermal modeling of a combined system of photovoltaic thermal (PV/T) solar water heater, Solar Energy, 82, 602 (2008)
• Vimal Dimri, B. Sarkar, U. Singh and G. N. Tiwari, Effect of condensing cover material on yield of an active solar still: an experimental validation, Desalination, 227, 178 (2008)
• Swapnil Dubey and G. N. Tiwari, Analysis of different configurations of flat plate water collectors connected in series, Int. Journal of Energy Research, 32, 1362 (2008)
• P. Barnwal and G. N. Tiwari, Grape drying by using hybrid photovoltaic-thermal (PV/T) greenhouse dryer, Solar Energy, 82, 1131 (2008)
• Swapnil Dubey and G. N. Tiwari. Life cycle cost analysis and carbon credit earned by hybrid PV/T solar water heater for Delhi climatic conditions. The Open Environmental Journal, 2, (2008)
• Swapnil Dubey and G. N. Tiwari. Analysis of partially covered PV/T flat plate water collectors connected in series. Solar Energy 82 (7), 602(2008)
• A. Ranjan, Swapnil Dubey, B. Agarwal and G. N. Tiwari. Performance analysis of an existing BIPV system for Indian climatic conditions, The Open renewable Energy Journal ,1, 01(2008)
• V. Dwivedi and G. N. Tiwari, Annual energy and exergy analysis of a double slope passive solar still. “Trends in Applied Sciences and Research” 3(3): 225 (2008).
• G. N. Tiwari, V. Dimri and Arvind Chel “Exergetic analysis of passive and active solar stills”, International Journal of Exergy 5(3): 360(2008)
• M. Jamil Ahmad and G. N. Tiwari, Study of models for predicting the mean hourly global radiation from daily summations. Open Environmental Journal, Volume 2, 6(2008)
• M. Jamil Ahmad and G. N. Tiwari, (2008) Estimation of hourly global solar radiation for composite climate. Open Environmental Journal, Volume 2, 34(2008)
• M. Jamil Ahmad and G. N. Tiwari, Evaluation of atmospheric transmittance for composite climate. International Journal of Agricultural Engineering. Manuscript EE 08 009. Vol. X. (2008).
• Prabhakant and G. N. Tiwari, Evaluation of carbon credit earned by a solar energy park in Indian condition, The Open Fuels & Energy Science Journal, 1, 57 (2008)
• Ashish Shukla, G. N. Tiwari, M.S. Sodha, Thermal performance of an adobe structure integrated with an earth-air heat exchanger: An experimental study. CIGR, International Journal EE 08 005. Vol. X. May, 2008.
• P. Barnwel, G. N. Tiwari, Life cycle energy metrics and CO2 credit analysis of a hybrid photovoltaic – thermal greenhouse dryer International Journal of Low Carbon Technologies, Volume 3(3), 2008, Pages 203-220.
• V. Raman, G. N. Tiwari, and H.D. Pandey, Life cycle cost analysis of a hybrid photovoltaic thermal water and air collector: A comparison study based on energy and exergy International Journal of Low carbon Technologies, Volume 3(3), 2008, Pages 173-190.
• S. Nayak, and G. N. Tiwari, Energy and Exergy analysis of photovoltaic/thermal integrated with a solar greenhouse Energy and Building, Volume 40(11), 2008, Pages 2015-2021.
• V.Raman, G. N. Tiwari, Life cycle cost analysis of HPVT air collector under different Indian climatic conditions, Energy Policy, 36(2), 2008
