Capture of Heat Energy from Diesel Engine Exhaust
... exhaust (heat contained in exhaust was evaluated based on environment temperature). The estimated payback time for 100% use of recovered heat would be less than 3 years at a fuel price of $3.50 per gallon, an interest rate of 10%, and an engine operation of 8 hours per day. Based on experimental dat ...
... exhaust (heat contained in exhaust was evaluated based on environment temperature). The estimated payback time for 100% use of recovered heat would be less than 3 years at a fuel price of $3.50 per gallon, an interest rate of 10%, and an engine operation of 8 hours per day. Based on experimental dat ...
The Heat Flow Through Oceanic and Continental Crust and the Heat
... throughthe oceanfloor.Lister [1977]predicteda simplerelation betweenheat flow and 1/t •/2. Parsonsand $clater [1977] showed that this relation should break down at about 120 Ma ...
... throughthe oceanfloor.Lister [1977]predicteda simplerelation betweenheat flow and 1/t •/2. Parsonsand $clater [1977] showed that this relation should break down at about 120 Ma ...
INFLUENCE OF PLATE TECTONICS ON LOCATIONS OF
... nearness to fumeroles or hot springs, and nearness to historically active volcanoes with at least one eruption per century. Acharya and Spulber found that volcano clusters are in general favorable to the development of geothermal field in the vicinity, but volcanic rock type and the amount of rainfa ...
... nearness to fumeroles or hot springs, and nearness to historically active volcanoes with at least one eruption per century. Acharya and Spulber found that volcano clusters are in general favorable to the development of geothermal field in the vicinity, but volcanic rock type and the amount of rainfa ...
uncorrected page proofs
... Heat loss by convection and conduction is a major concern if a person is immersed in cold water for an extended period. Such a person is at risk of extreme loss of body heat (hypothermia). Why? Heat loss by convection is high because water is generally moving and, as it moves, cold water removes hea ...
... Heat loss by convection and conduction is a major concern if a person is immersed in cold water for an extended period. Such a person is at risk of extreme loss of body heat (hypothermia). Why? Heat loss by convection is high because water is generally moving and, as it moves, cold water removes hea ...
Evaporators and Condensers
... progressively increases so that the leaving stream is entirely vapor. In most DX coil applications the air is dehumidified. Direct expansion coils are common in appliances such as refrigerators, airconditioners, and the air handlers found in typical HVAC distribution systems. As with evaporators, th ...
... progressively increases so that the leaving stream is entirely vapor. In most DX coil applications the air is dehumidified. Direct expansion coils are common in appliances such as refrigerators, airconditioners, and the air handlers found in typical HVAC distribution systems. As with evaporators, th ...
Keyhole mode laser welding of tantalum, Ti--6Al--4V
... transfer models of keyhole mode laser welding require some simplifications to make the calculations tractable. The simplifications often limit the applicability of each model to the specific materials systems for which the model is developed. In this work, a rigorous, yet computationally efficient, ...
... transfer models of keyhole mode laser welding require some simplifications to make the calculations tractable. The simplifications often limit the applicability of each model to the specific materials systems for which the model is developed. In this work, a rigorous, yet computationally efficient, ...
The Regulation of Body Temperature
... change together. The notion of a single uniform core temperature, although not strictly correct, is a useful approximation. The value of 98.6⬚F often given as the normal level of body temperature may give the misleading impression that body temperature is regulated so precisely that it is not allowe ...
... change together. The notion of a single uniform core temperature, although not strictly correct, is a useful approximation. The value of 98.6⬚F often given as the normal level of body temperature may give the misleading impression that body temperature is regulated so precisely that it is not allowe ...
Industrial Film Drying - White Rose Research Online
... transfer coefficient as it measures the ability of the dryer to supply energy for a given applied temperature difference and surface area between the drying air and the coating. The units of h are W/m2K. Since the heat transfer coefficient, h, is a key dryer design parameter, it provides a convenien ...
... transfer coefficient as it measures the ability of the dryer to supply energy for a given applied temperature difference and surface area between the drying air and the coating. The units of h are W/m2K. Since the heat transfer coefficient, h, is a key dryer design parameter, it provides a convenien ...
Institutionen för systemteknik Department of Electrical Engineering Camera Chip
... Light reaching the camera is first of all passed through a lens. The lens is designed to filter out all light except infrared light in the LWIR band and is also responsible for focusing the light onto the IR sensor. Once inside the camera, the light hits a large array of heat sensitive detectors cal ...
... Light reaching the camera is first of all passed through a lens. The lens is designed to filter out all light except infrared light in the LWIR band and is also responsible for focusing the light onto the IR sensor. Once inside the camera, the light hits a large array of heat sensitive detectors cal ...
How Aluminium Foil Improves the Hot Tack of Packaging
... the unrivalled barrier/cost efficiency of foil laminates are not surpassed by any other material. Alufoil’s good temper behaviour in converting, such as its wettability which allows excellent coverage of adhesives, lacquers or extrusion coatings or the reception of printing inks, along with its temp ...
... the unrivalled barrier/cost efficiency of foil laminates are not surpassed by any other material. Alufoil’s good temper behaviour in converting, such as its wettability which allows excellent coverage of adhesives, lacquers or extrusion coatings or the reception of printing inks, along with its temp ...
Overheating in new homes
... of robust national thresholds for use by planners, designers, builders and authorities is vital for dealing with overheating. The extent to which such thresholds could or should be regulated, for instance through the Building Regulations, is also a key issue for debate and action. At a more detailed ...
... of robust national thresholds for use by planners, designers, builders and authorities is vital for dealing with overheating. The extent to which such thresholds could or should be regulated, for instance through the Building Regulations, is also a key issue for debate and action. At a more detailed ...
Thermal analysis of both ventilated and full disc brake rotors with
... Many investigations of heat flow through ventilated disc brakes are reported in the literature. Michael and Roland [8] discussed the airflow patterns in the disc rotors. Wallis et al. [28] carried out a numerical study using the software Fluent on disc rotor blades to examine the effects of local he ...
... Many investigations of heat flow through ventilated disc brakes are reported in the literature. Michael and Roland [8] discussed the airflow patterns in the disc rotors. Wallis et al. [28] carried out a numerical study using the software Fluent on disc rotor blades to examine the effects of local he ...
Chondrites as samples of differentiated planetesimals - Scripts
... fluid, and conduction of heat through the unmelted crust limits the heat flux available to drive the core dynamo. These calculations are done using a finite difference formulation of the heat conduction equation in spherical coordinates for the conductive lid, which is defined as the material at tempera ...
... fluid, and conduction of heat through the unmelted crust limits the heat flux available to drive the core dynamo. These calculations are done using a finite difference formulation of the heat conduction equation in spherical coordinates for the conductive lid, which is defined as the material at tempera ...
C. Role of Work Coil
... A. Type of Hardening There are two types of hardening depending upon the depth of heating zone. They are through hardened and surface hardened. (i)Though Hardened In the form of through hardened, heat treated is in such a way that the inside of the work piece is hard as the outside. Therefore, not o ...
... A. Type of Hardening There are two types of hardening depending upon the depth of heating zone. They are through hardened and surface hardened. (i)Though Hardened In the form of through hardened, heat treated is in such a way that the inside of the work piece is hard as the outside. Therefore, not o ...
The Application of Thermal Imaging as a Nondestructive Test in
... covers or doors are only detectable if they are so hot and so close as to transmit heat onto a clearly defined part of the cover. An excellent camera used with the wrong settings and under inappropriate environmental conditions will ultimately yield misleading and inaccurate results. Reporting resul ...
... covers or doors are only detectable if they are so hot and so close as to transmit heat onto a clearly defined part of the cover. An excellent camera used with the wrong settings and under inappropriate environmental conditions will ultimately yield misleading and inaccurate results. Reporting resul ...
Ch 12 - HCC Learning Web
... embedded steel rods. For this arrangement to be practical, it is essential that the coefficient of linear expansion of concrete is the same as that of steel. When the reinforced concrete is heated or cooled, both the concrete and the steel must expand or contract by the same amount. If the coefficie ...
... embedded steel rods. For this arrangement to be practical, it is essential that the coefficient of linear expansion of concrete is the same as that of steel. When the reinforced concrete is heated or cooled, both the concrete and the steel must expand or contract by the same amount. If the coefficie ...
Chapter 19 - Clg Coils
... conditions at the water inlet temperature and that the remainder leaves at the inlet state to the coil. These two flows then mix at the coil exit, and the outlet state is the mixed average of the two flows. The process representation for the bypass model is then a straight line connecting the inlet ...
... conditions at the water inlet temperature and that the remainder leaves at the inlet state to the coil. These two flows then mix at the coil exit, and the outlet state is the mixed average of the two flows. The process representation for the bypass model is then a straight line connecting the inlet ...
Influence of circumferential solar heat flux distribution on the heat
... and cylindrical trough collector types, and the two-axis tracking collectors, such as the parabolic dish reflector and heliostat field collectors, are suitable for medium to high temperature applications as required in the industrial process heat applications and electric power generations. The para ...
... and cylindrical trough collector types, and the two-axis tracking collectors, such as the parabolic dish reflector and heliostat field collectors, are suitable for medium to high temperature applications as required in the industrial process heat applications and electric power generations. The para ...
Cogeneration
Cogeneration or combined heat and power (CHP) is the use of a heat engine or power station to generate electricity and useful heat at the same time. Trigeneration or combined cooling, heat and power (CCHP) refers to the simultaneous generation of electricity and useful heating and cooling from the combustion of a fuel or a solar heat collector. Cogeneration is a thermodynamically efficient use of fuel. In separate production of electricity, some energy must be discarded as waste heat, but in cogeneration this thermal energy is put to use. All thermal power plants emit heat during electricity generation, which can be released into the natural environment through cooling towers, flue gas, or by other means. In contrast, CHP captures some or all of the by-product for heating, either very close to the plant, or—especially in Scandinavia and Eastern Europe—as hot water for district heating with temperatures ranging from approximately 80 to 130 °C. This is also called combined heat and power district heating (CHPDH). Small CHP plants are an example of decentralized energy. By-product heat at moderate temperatures (100–180 °C, 212–356 °F) can also be used in absorption refrigerators for cooling.The supply of high-temperature heat first drives a gas or steam turbine-powered generator and the resulting low-temperature waste heat is then used for water or space heating as described in cogeneration. At smaller scales (typically below 1 MW) a gas engine or diesel engine may be used. Trigeneration differs from cogeneration in that the waste heat is used for both heating and cooling, typically in an absorption refrigerator. CCHP systems can attain higher overall efficiencies than cogeneration or traditional power plants. In the United States, the application of trigeneration in buildings is called building cooling, heating and power (BCHP). Heating and cooling output may operate concurrently or alternately depending on need and system construction.Cogeneration was practiced in some of the earliest installations of electrical generation. Before central stations distributed power, industries generating their own power used exhaust steam for process heating. Large office and apartment buildings, hotels and stores commonly generated their own power and used waste steam for building heat. Due to the high cost of early purchased power, these CHP operations continued for many years after utility electricity became available.