Browsing RP-Department of Energy Engineering by Issue Date

Developments in solar drying using forced ventilation and solar regenerated desiccant materials

Thoruwa, T. F. N.; Smith, J. E.; Grant, A. D.; Johnstone, C. M. (Elsevier, 1996)

In many countries, grains are naturally sun dried in the field, resulting in large-scale spoilage. Purpose-built solar grain dryers are being introduced with some success, but to be effective, their performance must be ...

Thermodynamic study of a combined double-way solid–gas thermochemical sorption refrigeration cycle

Kiplagat, J.K.; Li, T.X.; Wang, R.Z.; Wang, L.W.; Oliveira, R.G. (2009)

A combined double-way thermochemical sorption refrigeration thermodynamic cycle was proposed and tested. Both adsorption refrigeration and resorption refrigeration processes were combined in order to improve the system ...

A combined doubleway chemisorption refrigeration cycle based on adsorption and resorption processes

Kiplagat, J.K.; Li, T.X.; Wang, R.Z.; Wang, L.W.; Oliveira, R.G. (2009)

An innovative combined double-way chemisorption refrigeration cycle based on adsorption and resorption processes is presented. Two different reactive salts were used as sorbents and ammonia was utilized as the refrigerant ...

Performance study of a consolidated manganese chloride-expanded graphite compound for sorption deep freezing processes

Kiplagat, J.K.; Li, T.X.; Wang, R.Z.; Wang, L.W. (2009)

A consolidated composite sorbent made from manganese chloride and expanded graphite was produced for sorption deep-freezing processes and used for cold production at a temperature as low as −35 °C. Experimental results ...

Novel Composite Sorbent for Resorption Systems and for Chemisorption Air Conditioners Driven by Low Generation Emperature

Kiplagat, J.K.; Oliveira, R.G.; Wang, R.Z.; Wang, C.Y. (Elsevier, 2009-12-31)

The utilization of a composite sorbent (NaBr and expanded graphite) in chemisorption air conditioning systems driven by low-grade heat source, and in resorption systems with simultaneous heating and cooling effects was ...

Lithium Chloride–Expanded Graphite Composite Sorbent for Solar Powered Ice Make

Kiplagat, J.K.; Wang, R.Z.; Oliveira, R.G.; Li, T.X. (2010)

Consolidated composite material made from expanded graphite (EG) powder impregnated with LiCl salt is proposed for use in solar powered adsorption ice makers. Laboratory experiments were done to test the adsorption and ...

Renewable energy in Kenya: Resource potential and status of exploitation

Kiplagat, J.K.; Wang, R. Z.; Li, T. X. (Elsevier, 2011)

This paper presents an assessment of renewable energy resource potential and the current status of exploitation in Kenya. As an importer of petroleum fuels, Kenya spends a substantial amount of foreign reserves to import ...

Performance improvement of an adsorption chiller using composite adsorbent, silica gel impregnated with lithium chloride, paired with methanol as the adsorbate

Ishugah, T.F.; Wang, Liwei; Wang, Ruzhu; Zisheng, Lu (World Scientific Publishing, 2014)

This study aimed at analyzing different operation strategies to improve the performance of a new type adsorption chiller employing a novel composite adsorbent, silica gel impregnated with lithium chloride, paired with ...

Briquette making in Kenya: Nairobi and peri-urban areas

Kiplagat, J.K.; Ngusale, George K.; Luo, Yonghao (Elsevier, 2014)

Briquettes made from biomass residues could contribute to ensuring the sustainable supply of biomass energy. The paper reviews the present briquette making process in Kenya especially in Nairobi and peri-urban areas. The ...

Advances in wind energy resource exploitation in urban environment: A review

Ishugah, T.F.; Li, Y.; Wang, R.Z.; Kiplagat, J.K. (Elsevier, 2014)

Wind energy continues to stand out as a more established and mature technology to offset a large proportion of power. Efforts aimed at improving wind energy use to meet the energy demand in turbulent urban wind environment ...

Advances in wind energy resource exploitation in urban environment: A review

Kiplagat, J.K. (Elsevier, 2014-09)

Wind energy continues to stand out as a more established and mature technology to offset a large proportion of power. Efforts aimed at improving wind energy use to meet the energy demand in turbulent urban wind environment ...

Selection and Verification of a Drying Model for Maize (Zea mays L.) in Forced Convection Solar Grain Dryer

Osodo, Booker; Nyaanga, Daudi; Muguthu, Joseph (science and education publishing, 2017)

Various researchers have fitted experimental drying curves for various products to existing drying models. In this study, an experimental forced convection solar grain dryer was used to select the best fitting drying model ...

Investigation on Optimal Cutting Parameters in Turning AISI 8660 Steel Using Silicon (Sic) Whisker Reinforced Ceramic Tool

Wathigo1, J.M; Keraita2, J.N; Byiringiro3, J.B; Muguthu4, J.N (ResearchGate, 2017-07)

This research was to investigate the effects of process parameter that is cutting speed, feed rate, depth of cut and machining time on the response variables in turning AISI 8660 material using whisker reinforced ceramic ...

Quality Failure Analysis and Quality Improvement Methods in Small and Medium Manufacturing Companies (A Case Study of Shamco Industries Limited)

Ngugi, Joseph Chege; Muchiri, Peter; Muguthu, Joseph; Nkundineza, Celestin (IJSTR, 2018-04)

This paper elucidates the analysis of quality failure in small and medium manufacturing companies and established methodological approaches that mitigate these problems in order to improve on the quality of products ...

Optimum Air Velocity, Air Temperature and Maize Layer Thickness for Highest Moisture Removal Rate and Drying Efficiency in a Forced Convection Grain Dryer

Osodo, Booker; Nyaanga, Daudi; Kiplagat, Jeremiah; Muguthu, Joseph (sciepub, 2018-11)

The performance of a forced convection grain dryer may be evaluated based on different criteria, such as drying rate, moisture removal rate and efficiency. This performance is dependent upon various drying parameters, such ...