heat exchangers
Effectively Design Shell-and-Tube Heat Exchangers
... to exchangers with removable tube bun- dles, namely U-tube and ...fixed-tubesheet exchangers, the only limitation is the manufacturer’s fabrication capability and the avail- ability of components such as ...
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Characterization of thermal contacts between heat exchangers and a thermoelectric module by impedance spectroscopy
... Heat to electricity energy conversion efficiency of a thermoelectric (TE) device is not only influenced by the TE materials properties, but it also depends on the temperature difference between both sides of the ...
16
Exact solution for the conjugate fluid-fluid problem in the thermal entrance region of laminar counterflow heat exchangers
... constant heat flux boundary conditions at the outer wall sur- face ...practical heat transfer systems, such as double-pipe, or multilayered, heat ...
10
Structural and numerical identifiability of thermal resistances in plate fin-and-tube heat exchangers using manufacturer catalog data
... Abstract: Plate fin-and-tube heat exchangers, commonly known as heating/cooling coils, are widely used in HVAC systems to transfer heat to or from air. A problem of practical interest in coil ...
8
Analysis of the thermal performance of heat exchangers for active chilled beam units
... The coil inside an ACB has some distinctive features compared to conventional water coils. First, the velocity of the induced air flow is quite low. For the case study presented in this paper, the air Reynolds number ...
7
Air-Cooled Heat Exchangers for General Refinery Services
... Typical instrumentation for System C (see Figure G-5) consists of a temperature sensor in the exit fluid stream, a controller that receives a signal from the sensor and sends sig- nals to the exhaust louvers, and one or ...
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Agricultural greenhouse solar assisted climatization systems designs and optimization, for the semi arid region of northern Mexico
... of heat exchangers was ...of heat exchangers used for air ...coil heat exchangers of an overall heat transfer coefficient of 400 W / ° C were ...180 exchangers is ...
10
TítuloReal time optimisation for a heat recovery section with equipment degradation
... a heat recovery network, consisting in fifteen heat ...to heat different prod- ucts until achieve the required setpoints by using four heat ...The heat sources are different waste water ...
7
Thermodynamic modelling of a two-stage absorption chiller driven at two-temperature levels
... the heat exchangers, the heat losses towards the ambient, the main heat fluxes between the components, the dissipative effects that originate in internal mixing processes, the pressure drops, ...
7
Monofractal and multifractal analysis of simulated heat release fluctuations in a spark ignition heat engine
... In general, typical thermodynamic models of thermal cycles are focused on operating in steady state conditions and only one cycle is taken as representative of all other cycles pertaining to a sequence of the latter [1]. ...
22
HEAT STRESS, STRAIN, AND ILLNESS
... One early evaluation was to determine if the use of an apparatus that cools the inhalation air of the CCBA provided relief from heat strain. Figure 9 depicts the mean temperature rise of two groups of individuals ...
11
Operations Management and Intelligent Buildings Technology
... Shading reduces surface temperatures below the plants. These cooler surfaces, in turn, reduce the heat transmitted into buildings or re-emitted into the atmosphere. For example, a multi- month study measured ...
13
Magnetically driven quantum heat engine
... quantum heat engine generates useful mechanical work from heat, by means of a reversible sequence of transformations (trajectories) in Hilbert’s space, where the “working substance” is of quantum mechanical ...
8
Refrigeración de LED's mediante "Heat Pipes"
... Los Heat Pipes son unos dispositivos autónomos, que permiten refrigerar los focos calientes, trasladando el calor generado por ellos a disipadores térmicos situados en zonas más accesibles y menos ...
11
The heat spells of Mexico City
... (or heat island effect) have to be intimately linked to global climate ...extreme heat together with local air pollution, a common case in large cities of the developing world, would affect population ...
6
Some nonlinear heat conduction problems for a semi infinite strip with a non uniform heat source
... dimensional heat equation for a semi-infinite inaterial x > 0, with temperature or heat flux boundary conditions 011 the race x = 0 is ...standard heat conduction problem because a heat ...
16
TítuloAn operational model for the optimal operation of the freeze drying process
... involves heat and mass transfer mechanisms, as well as ice ...uniform heat and mass transfer properties; (ii) a continuous interface with infinitesimal thickness is considered between the frozen and dried ...
8
Response of maize and olive to climate change under the semi-arid conditions of southern Spain
... A heat stress model has been developed and evaluated in order to simulate maize grain yield under heat stress conditions around silking, obtaining satisfactory ...a heat stress reduction factor was ...
179
using trnsys simulation to optimize the desingn of a solar water distillation system
... releases heat to the atmosphere, bringing air nearly to ambient temperature and maximizing distillate ...on heat pipes and with excess surface area for dumping heat to the atmosphere, in order for ...
12
Conceptual design of an integrated waste heat recovery plant for municipal and industrial applications
... waste heat, its range of temperature and other valuable streams’ data, it was found that not in many countries this information is ...waste heat to improve the environmental issues, there are not precise ...
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