scholarly journals Small Scale Power Generation using Low Grade Heat from Solar Pond

2012 ◽  
Vol 49 ◽  
pp. 50-56 ◽  
Author(s):  
Baljit Singh ◽  
J. Gomes ◽  
Lippong Tan ◽  
Abhijit Date ◽  
A. Akbarzadeh
Keyword(s):  
Power Generation ◽  
Small Scale ◽  
Low Grade ◽  
Solar Pond ◽  
Low Grade Heat

Experimental Investigation of Power Generation from Salinity Gradient Solar Pond Using Thermoelectric Generators for Renewable Energy Application

2013 ◽  
Vol 393 ◽  
pp. 809-814 ◽  
Author(s):  
Baljit Singh ◽  
Jaisatia Varthani ◽  
Muhammed Fairuz Remeli ◽  
Lippong Tan ◽  
Abhijit Date ◽  
...  
Keyword(s):  
Power Generation ◽  
Temperature Difference ◽  
Cold Water ◽  
Salinity Gradient ◽  
Convective Zone ◽  
Electricity Production ◽  
Low Grade ◽  
Thermoelectric Generators ◽  
Solar Pond ◽  
Low Grade Heat

Low grade heat (<100°C) is currently converted into electricity by organic rankine cycle (ORC) engines. ORC engines require certain threshold to operate as the organic fluid generally boils at more than 50°C, and fails to operate at lower temperature. Thermoelectric generators (TEGs) can operate at very low temperature differences and can be good candidate to replace ORC for power generation at low temperatures. In this paper, the potential of power generation from TEG and salinity-gradient solar pond (SGSP) was investigated. SGSP is capable of storing heat at temperature up to 80°C. The temperature difference between the upper convective zone (UCZ) and lower convective zone (LCZ) of a SGSP can be in the range of 40°C 60°C. This temperature difference can be used to power thermoelectric generators (TEG) for electricity production. This paper present result of a TEG system designed to be powered by the hot and cold water from the SGSP. The system is capable of producing electricity even on cloudy days or at night as the SGSP acts as a thermal storage system. The results obtained have indicated significant prospects of such system to generate power from a low grade heat for remote area power supply.

Experimental Analysis of Thermoelectric Heat Exchanger for Power Generation from Salinity Gradient Solar Pond Using Low-Grade Heat

2016 ◽  
Vol 46 (5) ◽  
pp. 2854-2859 ◽  
Author(s):  
Baljit Singh ◽  
Nuraida ‘Aadilia Baharin ◽  
Muhammad Fairuz Remeli ◽  
Amandeep Oberoi ◽  
Abhijit Date ◽  
...  
Keyword(s):  
Power Generation ◽  
Heat Exchanger ◽  
Experimental Analysis ◽  
Salinity Gradient ◽  
Low Grade ◽  
Solar Pond ◽  
Low Grade Heat ◽  
Thermoelectric Heat

Low grade heat driven adsorption system for cooling and power generation with small-scale radial inflow turbine

2016 ◽  
Vol 183 ◽  
pp. 1302-1316 ◽  
Author(s):  
Fadhel Noraldeen Al-Mousawi ◽  
Raya Al-Dadah ◽  
Saad Mahmoud
Keyword(s):  
Power Generation ◽  
Small Scale ◽  
Low Grade ◽  
Adsorption System ◽  
Radial Inflow Turbine ◽  
Low Grade Heat

scholarly journals An optimised chemisorption cycle for power generation using low grade heat

2017 ◽  
Vol 186 ◽  
pp. 251-261 ◽  
Author(s):  
Huashan Bao ◽  
Zhiwei Ma ◽  
Anthony Paul Roskilly
Keyword(s):  
Power Generation ◽  
Low Grade ◽  
Low Grade Heat

scholarly journals The potential of coffee stems  gasification to provide bioenergy for coffee farms: a case study in the Colombian coffee sector

2019 ◽  
Vol 10 (4) ◽  
pp. 1137-1152 ◽  
Author(s):  
Samira Garcia-Freites ◽  
Andrew Welfle ◽  
Amanda Lea-Langton ◽  
Paul Gilbert ◽  
Patricia Thornley
Keyword(s):  
Rural Areas ◽  
Internal Combustion Engines ◽  
Smallholder Farmers ◽  
Thermochemical Conversion ◽  
Small Scale ◽  
Low Grade ◽  
Coffee Production ◽  
Coffee Sector ◽  
Low Grade Heat

AbstractThe coffee industry constitutes an important part of the global economy. Developing countries produce over 90% of world coffee production, generating incomes for around 25 million smallholder farmers. The scale of this industry poses a challenge with the generation of residues along with the coffee cultivation and processing chain. Coffee stems, obtained after pruning of coffee trees, are one of those abundant and untapped resources in the coffee supply chain. Their high lignocellulosic content, the low calorific value ranging between 17.5 and 18 MJ kg−1 and the low ash content make them a suitable solid fuel for thermochemical conversion, such as gasification. This research evaluates the feasibility of using these residues in small-scale downdraft gasifiers coupled to internal combustion engines for power and low-grade heat generation, using process modelling and the Colombian coffee sector as a case study. The producer gas properties (5.6 MJ Nm−3) and the gasifier’s performance characteristics suggest that this gas could be utilized for power generation. A cogeneration system efficiency of 45.6% could be attainable when the system’s low-grade heat is recovered for external applications, like in the coffee drying stage. An analysis of the energy demand and coffee stems availability within the Colombian coffee sector shows that the biomass production level in medium- to large-scale coffee farms is well matched to their energy demands, offering particularly attractive opportunities to deploy this bioenergy system. This work assesses the feasibility of providing coffee stem–sourced low-carbon energy for global coffee production at relevant operating scales in rural areas.

Passive small scale electric power generation using thermoelectric cells in solar pond

Energy ◽  
2016 ◽  
Vol 117 ◽  
pp. 149-165 ◽  
Author(s):  
L.C. Ding ◽  
A. Akbarzadeh ◽  
Abhijit Date ◽  
D.J. Frawley
Keyword(s):  
Power Generation ◽  
Electric Power ◽  
Small Scale ◽  
Electric Power Generation ◽  
Solar Pond

scholarly journals Prospects of Power Generation from Low Grade Heat Resources through Trilateral Flash Cycle (TFC) Using Impulse Turbine

2017 ◽  
Vol 110 ◽  
pp. 352-358 ◽  
Author(s):  
Mahdi Ahmadi ◽  
Abhijit Date ◽  
Aliakbar Akbarzadeh ◽  
Shahin Heidari ◽  
Md Arbab Iqbal ◽  
...  
Keyword(s):  
Power Generation ◽  
Low Grade ◽  
Impulse Turbine ◽  
Low Grade Heat
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