[en] Issues of progress in energy conservation in industrial sector in Japan and energy conservation through waste heat recovery are discussed. 32 figs, 7 tabs

[en] Our oil explorations both onshore and offshore have thrown open bright prospects of cogeneration by using natural gas in gas turbine power plants with heat recovery units. Both for co-gen and combined cycle systems, supplementary firing of GT exhaust gas is normally required. Hence, duct burners have significant role for effective contribution towards of efficacy of heat recovery system for gas turbine exhaust gas. This article details on various aspects of duct burners in heat recovery systems. (author)

[en] Absorption of low temperature steam in the acid concentrate raises the temperature of diluted acid stream. Heat pump based on this principle, called as acid absorption chemical heat pump (AACHP) is coupled with high energy demanding separation unit like distillation column to reduce the heat requirements. This article highlights the advantages of employing AACHPs. AACHP eliminates the need for sophisticated compressors. AACHP based on acid-water system is described. About 95% of supplied heat to the distillation unit is wasted through the cooling water to the environment, but net saving in heat is found to be approximately 40% if a distillation column is coupled with AACHP.(M.G.B.)

[en] Energy conservation is of vital importance in the industry. This article analyses waste heat recovery systems in the two specific examples of an HTHP dyeing plant and a beer boiler. (author). 2 figs

[en] In this report a graphical method to analyze the direct suspension-cyclon heat exchangers, in multi-stage configuration is presented. Each tube-cyclon stage is regarded as an equilibrium unit. The modification of the graphical method is considered in the case of solid entrained by the current of gas leaving the cyclon, and of gas by-passed in solid feed. The graphical method of analysis is useful to evaluate the operating conditions of the heat exchanger. (Author) 6 ref

[en] Heat transformers are a promising technology for optimal exploitation of waste heat streams. The use of heat transformers is efficient for energetic, exergetic, and economic reasons. Heat transformers are environment-friendly, and reduce both thermal pollution and the pollution by greenhouse gases. The practical use of heat transformers is however still limited to the water/LiBr pair. The application of new media and the multistage heat transformer are promising new developments. (A.S.)

[en] One of the most popular and feasible strategies to reduce costs for electrical and other energy supply in remote communities is the development of wind-diesel systems. In these systems, a significant share of the electrical energy requirements of a community can be provided by wind turbines connected to the community electrical distribution system. One of the characteristics of the systems having a relatively large ratio of wind turbine capacity to community load, called High Penetration Wind-Diesel Systems (HPWDS), is that during high wind periods there will be electrical energy available in excess of the net load on the system. An important concept of the HPWDS strategy is that this excess energy can be directed to a practical use, such as heating. The concept of HPWDS was shown to be economically and technically feasible in communities having no heat recovery on the diesel plants. It proved to be even more attractive as a strategy for self sufficiency of electrical supply in communities with waste heat recovery. 1 fig., 1 tab

[en] The application of large gas turbines to combined cycles for power production has increased significantly in the past ten years. Heat Recovery Steam Generators for large power plant applications have been developed to meet utility customer needs for compressed delivery and installation schedules, compliance with present and future emissions requirements, dispatchability, ruggedness and maintainability. This paper discusses design features of the current generation of HRSGs that promote modular shop assembly, minimum field erection, and characteristics that provide the ability to perform in quick start-up and daily cycle service

[en] At the extreme conditions expected for some operating scenarios of the International Thermonuclear Experimental Reactor, commonly used heat-removal structures are unable to withstand either the high sputter erosion rates or power loads. Solutions to these lifetime and reliability problems by (1) changes in machine design and operation, (2) redeposition mechanisms, and (3) changes in materials, will be discussed. A proposed accelerated-life test facility for prototype divertor plate development is described

[en] Short communication