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A preliminary attempt to estimate the potential of solar process heating in producing cotton based textiles in India as well as the amount of greenhouse gases likely to be mitigated consequently has been made. To begin with, all the processes involved in the production of cotton based textiles (yarn and cloth) that require thermal energy have been identified. Also an assessment of availability of solar radiation as well as the ambient conditions at various locations with clusters of cotton based textile units in the country has been made. Subsequently, the solar collector area required for meeting the process heating demand has been estimated. Further, corresponding useful thermal energy delivery of solar industrial process heating systems at identified locations has been estimated. The process heating potential in term of useful thermal energy requirements in cotton based textile production is estimated at 191 PJ annually. The estimated values of annual solar fractions for the identified locations with clusters of cotton based textile units range between 0.22 and 0.32 for systems without storage and in between 0.20 and 0.60 for SIPH system having provision of thermal storage for collection of energy that would otherwise be dumped. Solar process heating in cotton based textile industry in India have a potential to mitigate 2457–7648 thousand tonnes of greenhouse gas emissions annually depending on the location and the provision of a storage component or otherwise. [ABSTRACT FROM AUTHOR]

An attempt to estimate the potential of solar industrial process heating (SIPH) and corresponding mitigation of greenhouse gas emissions in dairy industry in India is presented. An assessment of availability of solar radiation as well as of the ambient conditions at various locations with milk processing plants has been made. The effect of the choice of design value of direct normal irradiance on the annual performance of solar process heating systems has been studied using model developed for hourly simulation of the performance of solar process heating system. Further, state wise estimates for useful thermal energy delivery and corresponding solar fraction have also been obtained. The total process heating potential in term of useful energy requirement in dairy sector in India has been estimated at 6.40 PJ/annum which reduces to 4.50 PJ per annum if the process heating requirement is restricted to only pasteurization stage of milk processing. The corresponding solar collector area requirement for process heating in dairy industry in India is estimated in the range of 1.54–1.83 million m 2 with the average solar fraction estimated in the range 0.18–0.32. The use of solar energy for meeting milk processing related thermal energy demand is expected to mitigate (32–144 thousand tonnes) of CO 2 emissions annually. [ABSTRACT FROM AUTHOR]