Economics of solar air pre-heating in south Indian tea factories: a case study

Palaniappan, C.; Subramanian, Sowkarthika

doi:10.1016/s0038-092x(98)00028-0

Cited by 34 publications

(7 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The effect of changing glass cover, single and double pass circulation, incorporation of barriers dividing the air channel on the collector performance, efficiency and exergy analysis are also reported [12,14,20]. Economics of some industrial applications of solar air heater as well as case studies of technical feasibilities are also reported by researchers [8,15]. There are still certain issues concerning the operation of solar air heater as per users' suitability.…”

Section: Introductionmentioning

confidence: 94%

See 1 more Smart Citation

Development of an Empirical Model for Assessment of Solar Air Heater Performance

Choudhury

Baruah

2014

Distributed Generation & Alternative Energy Journal

View full text Add to dashboard Cite

Solar flat plate collectors are used for meeting the hot air requirement in a number of applications ranging from domestic to industrial sectors. However, the varying degree of uncertainties of available solar radiation along with varying weather conditions often acts as restriction to their wider use. The varying input conditions like solar radiation, ambient temperature and relative humidity have diverse effect on the output of the flat plat collector used for hot air generation and poses difficulty in terms of reliability in providing the output as per users' requirement. This study refers to a method of predicting the output of flat plate collectors under varying working conditions. The model suggested here defines a relationship between the output in terms of instantaneous efficiency and the inputs, namely, solar radiation, ambient temperature, fluid inlet temperature and the mass flow rate. The relationship is based on the behavior of a given flat plate collector under certain sets of input parameters and can be used to estimate the efficiency of the collector at various mass flow rates. Further, this model can be suitably extended to estimate the mass flow rate for providing a particular output under specific set of input parameters.

show abstract

Section: Introductionmentioning

confidence: 94%

“…It is observed that by increasing mass flow rate the slope as well as the intercept increases. These variations against mass flow rates is best fitted into a power curve defined by the following characteristic equations (15) …”

Section: Modeling Instantaneous Efficiencies Of a Given Collector Formentioning

confidence: 99%

Development of an Empirical Model for Assessment of Solar Air Heater Performance

Choudhury

Baruah

2014

Distributed Generation & Alternative Energy Journal

View full text Add to dashboard Cite

show abstract

“…Drying is the most common and simple application of SAH. Drying of agricultural, textile and marine products using different designs of SAH is established by researchers (Abdullah 2005;Palaniappan and Subramanian 1998). Similarly, use of SAH for other applications like desalination or air conditioning is also investigated by researchers (Yıldırım and Solmus 2014).…”

Section: Annual Utilizationmentioning

confidence: 99%

Solar air heater for residential space heating

Choudhury

Baruah

2017

Energ. Ecol. Environ.

View full text Add to dashboard Cite

Space heating appliances require significant amount of primary as well as secondary energy. In most of the countries, energy requirements for such utilities are met by burning fossil fuel or from conventional electricity. Such usual practices for space heating result in significant increase in greenhouse gas emission and fossil fuel depletion. In the line of global emphasis on energy conservation and switch-to-clean energy approach, solar thermal energy can be harnessed using solar air heater for space heating purpose. This paper studies the potential of using solar air heater in space heating applications. Associated critical issues like demand-supply mismatch, installation space constraint, annual utilization factor and undesirable variations in output temperature are highlighted. Further, current research trends toward improving applicability of solar air heater are also briefly discussed.

show abstract

“…Where E m represents CO 2 emissions embodied in the solar dryer and T is the operational life of solar dryer. The dryer was expected to operate for 10 years (Palaniappan and Subramanian 1998).…”

Section: Estimation Of Net Fossil Co 2 Emission Mitigationmentioning

confidence: 99%

Investigation into solar drying of potato: effect of sample geometry on drying kinetics and CO2 emissions mitigation

Tripathy

2013

J Food Sci Technol

View full text Add to dashboard Cite

Drying experiments have been performed with potato cylinders and slices using a laboratory scale designed natural convection mixed-mode solar dryer. The drying data were fitted to eight different mathematical models to predict the drying kinetics, and the validity of these models were evaluated statistically through coefficient of determination (R(2)), root mean square error (RMSE) and reduced chi-square (χ (2)). The present investigation showed that amongst all the mathematical models studied, the Modified Page model was in good agreement with the experimental drying data for both potato cylinders and slices. A mathematical framework has been proposed to estimate the performance of the food dryer in terms of net CO2 emissions mitigation potential along with unit cost of CO2 mitigation arising because of replacement of different fossil fuels by renewable solar energy. For each fossil fuel replaced, the gross annual amount of CO2 as well as net amount of annual CO2 emissions mitigation potential considering CO2 emissions embodied in the manufacture of mixed-mode solar dryer has been estimated. The CO2 mitigation potential and amount of fossil fuels saved while drying potato samples were found to be the maximum for coal followed by light diesel oil and natural gas. It was inferred from the present study that by the year 2020, 23 % of CO2 emissions can be mitigated by the use of mixed-mode solar dryer for drying of agricultural products.

show abstract

Economics of solar air pre-heating in south Indian tea factories: a case study

Cited by 34 publications

References 1 publication

Development of an Empirical Model for Assessment of Solar Air Heater Performance

Development of an Empirical Model for Assessment of Solar Air Heater Performance

Solar air heater for residential space heating

Investigation into solar drying of potato: effect of sample geometry on drying kinetics and CO2 emissions mitigation

Contact Info

Product

Resources

About