Thermax. D Ltd. is an Indian energy and environment engineering company based in India and Britain. It manufactures, boilers, vapour absorption machines, offers water and waste solutions and installs captive power projects. Thermax is also a historic brand name of boilers, and the name of a former toughened-glass company.Anu Aga was the chairperson of the company 1996–2004, till she handed over the reins to her daughter, Meher Pudumjee, and figured amongst the eight richest Indian women, and in 2007 was part of 40 Richest Indians by net worth according to Forbes magazine, in 2009 she was at number 55, and continues to be a board member. Wikipedia.
International Journal of Thermal Sciences | Year: 2010
Carbon nanotube (CNT) contacts play a promising role in thermal management devices due to their high thermal conductivity. However, at the CNT-substrate contacts, interfacial thermal resistance (ITR) may significantly reduce the heat transfer ability of carbon nanotube interconnects. An in depth understanding of the thermal transport in CNT-substrate contacts is therefore essential, considering the fact that very few experimental results for these contacts are available. In this computational study, the heat transport in 3-D hollow CNT/SiO2 and CNT/Si contacts at room temperature are modeled using the Boltzmann transport equation for phonons. An isotropic assumption for the dispersion relations of graphite has been used to calculate the material properties of CNT. The present simulation for the CNT/SiO2 contact predict the ITR to be of the same order as that of the theory. However, the computed ITR is two orders of magnitude smaller than that of the experimental value. The discrepancy between the measured and predicted values of thermal contact resistances may be attributed to the imperfect contact and the presence of catalyst particles in between the CNT and SiO2 substrate in the experiment, the assumption of isotropic phonon dispersion and the use of Debye model to calculate the material properties. For the CNT/Si contact, the value of ITR obtained using the phonon sine function dispersion model is an order of magnitude higher than that of the Debye Model. It is determined that the length of the CNT and substrate do not have a significant effect on the thermal contact resistance. The thermal contact resistances are found to decrease with increasing values of the CNT diameter and thickness and are relatively independent of substrate diameter. © 2010 Elsevier Masson SAS. All rights reserved.
Valipour A.,University of Pune |
Raman V.K.,Thermax |
Motallebi P.,University of Tehran
Environmental Engineering and Management Journal | Year: 2010
The use of aquatic macrophytes for the domestic wastewater treatment is increasing in various parts of the world. The aim of this study is to examine the potential of shallow pond system using water hyacinth (Echhornia crassipes) along with the microorganisms present in the bio-film attached to the roots and water column for treatment of domestic wastewater in the presence of high total dissolved solids (TDS) and heavy metal salts. The shallow pond system is different from conventional water hyacinth system and it has high oxygen rich zone to provide the superior growth of aerobic microorganism. The studies indicate that, water hyacinth can tolerate TDS up to 2000 mg/L in the shallow pond system. The heavy metal removal is a function of phytoaccumulation or phytoextraction, which can lead to morphological deformity if heavy metals exceed the saturation limit of 268 & 2152 mg/kg Cd, 381 & 3372 mg/kg Cu, 229 & 1850 mg/kg Ni, 462 & 2764 mg/kg Zn, in shoots and roots respectively. The reduction in TDS is marginal (19%) at the highest tolerable limit whereas the heavy metal reduction is 66%, 68%, 64%, 70% for Cd, Cu, Ni and Zn respectively at the outlet of the treatment system. The sewage treatment performance of the shallow pond water hyacinth system for all other parameters is estimated as 81% Chemical oxygen demand (COD), 91% Biochemical oxygen demand (BOD5), 16% Total dissolved solids (TDS), 70% Total suspended solids (TSS), 4% Chlorides, 74% Ammonia nitrogen (NH3-N), 41% Phosphate (PO 4-P), 96% Most probable number (MPN) and 98% Total viable count (TVC) reduction.
Thermax | Date: 2014-07-21
Monomer solution and liquid solution immiscible with the monomers in the monomer solution are cocurrently jetted upwardly in a pulsating manner in a reaction vessel. Monomer droplets are allowed to rise up in a controlled and smooth manner under the dynamic forces exerted by differential flow rate and differential pressure between the monomer and liquid solutions and the differential densities between the monomer and liquid solutions without causing coalescence, agglomeration and breakup of the monomer droplets and to stabilize by partial polymerization of the droplets at 50-60 C. The monomer droplets flow out horizontally into a polymerization reactor and get polymerized in the polymerization reactor under agitation at 80-85 C. The polymer beads are dried at 80-100 C. and sieved.
Agency: Cordis | Branch: FP7 | Program: CP-SICA | Phase: ENERGY.2011.6.1-1 | Award Amount: 5.30M | Year: 2011
The OPTIMASH project aims to optimise the efficiency and reliability of gasifiers fuelled with high-ash content coals. High Pressure Circulating Fluidized Bed gasifiers are the target technology. The objective of this 4 years project is to develop a pilot gasifier capable of producing a syngas flow at 10 bars suitable for 1MWth. The gasification characteristics of high ash content coal will be investigated using pressurized Drop Tube Furnace facilities and accompanying measurement instruments. Coal gasification models will be developed taking into account the relevant chemical kinetics. In parallel, coal beneficiation and preparation studies will be conducted experimentally; the results will be modelled for their generalization. The 1 MWth pilot-scale plant will be modelled and numerically simulated using relevant CFD codes. The computations will be validated with data coming from the pilot-plant. The global IGCC system using the developed gasifier will be modelled using existing energy and mass balance soft-wares. Commercial scale design criteria will be developed taking into account pressure and geometric scaling. Indian high ash coals are the main target of the project. To insure the fuel flexibility of the developed process, Turkish high ash coals will also be studied and their characteristics used in the modelling of the process. The project will allow optimizing the global efficiency of the gasification technology for high ash coal by minimizing the steam use, optimising particle size vs residence time, developing particle agglomeration avoidance strategies, investigating corrosion risks, increasing fuel flexibility, developing efficient ash disposal system and testing different technologies for gas cooling, tar and fly ash removal. The consortium comprises a major industrial partner and a major research institute from India, together with two major research organisms from Netherlands and France, the Turkish Coal Enterprises and one Turkish university.
Thermax | Date: 2011-02-23
The absorption chiller-heater apparatus of present invention utilizes a portion of direct heat, used to heat water, for providing the refrigeration effect. The external heat input required for providing refrigeration is minimal; hence, the efficiency of the apparatus is increased by 30-40% over the conventional systems. Further, as the quantum of the external heat source required for a new cycle is reduced, the size of the high temperature generator required, is smaller, which results in lower capital costs. The apparatus provides chilled water which can be used for various industrial purposes. The absorption chiller-heater reduces CO