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Studies in biogas technology. Part 4. A noval biogas plant incorporating a solar water-heater and solar still

Journal Article:

Abstract

A reduction in the heat losses from the top of the gas holder of a biogas plant has been achieved by the simple device of a transparent cover. The heat losses thus prevented have been deployed to heat a water pond formed on the roof of the gas holder. This solar-heated water is mixed with the organic input for hot-charging of the biogas plant. To test whether the advantages indicated by a thermal analysis can be realized in practice, a biogas plant of the ASTRA design was modified to incorporate a roof-top water-heater. The operation of such a modified plant, even under worst case conditions, shows a significant improvement in the gas yield compared to the unmodified plant. Hence, the innovation reported here may lead to drastic reductions in the sizes and therefore costs of biogas plants. By making the transparent cover assume a tent-shape, the roof-top solar heater can serve the additional function of a solar still to yield distilled water. The biogas plant-cum-solar still described here is an example of a spatially integrated hybrid device which is extremely cost-effective.
Authors:
Reddy, A K.N.; [1]  Prasad, C R; Sathyanarayan, S R.C.; Rajabapaiah, P
  1. Indian Inst. of Science, Bangalore
Publication Date:
Sep 01, 1979
Product Type:
Journal Article
Reference Number:
EDB-81-037811
Resource Relation:
Journal Name: Proc. Indian Acad. Sci., Sect. C: Eng. Sci.; (India); Journal Volume: 2:3
Subject:
09 BIOMASS FUELS; BIOGAS PROCESS; OPTIMIZATION; METHANE; PRODUCTION; ANAEROBIC DIGESTION; CHEMICAL REACTORS; DESIGN; GAS YIELDS; HEAT TRANSFER; MANURES; SOLAR STILLS; SOLAR WATER HEATERS; AGRICULTURAL WASTES; ALKANES; APPLIANCES; BIOCONVERSION; DIGESTION; ENERGY TRANSFER; EQUIPMENT; EVAPORATORS; HEATERS; HYDROCARBONS; MANAGEMENT; ORGANIC COMPOUNDS; ORGANIC WASTES; PROCESSING; SOLAR EQUIPMENT; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; WATER HEATERS; YIELDS; 090122* - Hydrocarbon Fuels- Preparation from Wastes or Biomass- (1976-1989)
OSTI ID:
6669020
Country of Origin:
India
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: PIASD
Submitting Site:
IEA
Size:
Pages: 387-393
Announcement Date:

Journal Article:

Citation Formats

Reddy, A K.N., Prasad, C R, Sathyanarayan, S R.C., and Rajabapaiah, P. Studies in biogas technology. Part 4. A noval biogas plant incorporating a solar water-heater and solar still. India: N. p., 1979. Web.
Reddy, A K.N., Prasad, C R, Sathyanarayan, S R.C., & Rajabapaiah, P. Studies in biogas technology. Part 4. A noval biogas plant incorporating a solar water-heater and solar still. India.
Reddy, A K.N., Prasad, C R, Sathyanarayan, S R.C., and Rajabapaiah, P. 1979. "Studies in biogas technology. Part 4. A noval biogas plant incorporating a solar water-heater and solar still." India.
@misc{etde_6669020,
title = {Studies in biogas technology. Part 4. A noval biogas plant incorporating a solar water-heater and solar still}
author = {Reddy, A K.N., Prasad, C R, Sathyanarayan, S R.C., and Rajabapaiah, P}
abstractNote = {A reduction in the heat losses from the top of the gas holder of a biogas plant has been achieved by the simple device of a transparent cover. The heat losses thus prevented have been deployed to heat a water pond formed on the roof of the gas holder. This solar-heated water is mixed with the organic input for hot-charging of the biogas plant. To test whether the advantages indicated by a thermal analysis can be realized in practice, a biogas plant of the ASTRA design was modified to incorporate a roof-top water-heater. The operation of such a modified plant, even under worst case conditions, shows a significant improvement in the gas yield compared to the unmodified plant. Hence, the innovation reported here may lead to drastic reductions in the sizes and therefore costs of biogas plants. By making the transparent cover assume a tent-shape, the roof-top solar heater can serve the additional function of a solar still to yield distilled water. The biogas plant-cum-solar still described here is an example of a spatially integrated hybrid device which is extremely cost-effective.}
journal = {Proc. Indian Acad. Sci., Sect. C: Eng. Sci.; (India)}
volume = {2:3}
journal type = {AC}
place = {India}
year = {1979}
month = {Sep}
}