convectant drying is described as: 'the balanced manipulation and control of air exchanges, heat, and vapour pressure differential to create optimum conditions for evaporation, reduction and control of airborne moisture from the indoor environment'. convectant drying equipment is available in portable and trailer mounted form.
a stirling engine is a heat engine that operates by cyclic compression and expansion of air or other gas the working fluid at different temperatures, such that there is a net conversion of heat energy to mechanical work. more specifically, the stirling engine is a closed-cycle regenerative heat engine with a permanently gaseous working fluid.
a bladeless fan, sometimes called air multiplier, is a fan which blows air from a ring with no external blades. its vanes are hidden in its base and directs the collected airflow through a hollow tube or toroid, blowing a thin high-velocity smooth airflow from holes or a continuous slot across the surface of the tube or toroid.
the royal air force developed a distinctive slang which has been documented in works such as piece of cake and the dictionary of raf slang.. the following is a comprehensive selection of slang terms and common abbreviations used by british armed forces from before world war ii until the present day; less common abbreviations are not included.
burned-out magirus-deutz furniture mover van near chełmno extermination camp, type used by the nazis for suffocation, with the exhaust fumes diverted into the sealed rear compartment where the victims were locked in.this particular van had not been modified, as explained by office of the united states chief counsel for prosecution of axis criminality 1946 , nevertheless, it gives a good idea .
using portable generators in garages, or near open windows or air conditioning vents can also result in carbon monoxide poisoning. additionally, it is important to prevent backfeeding when using a portable engine generator, which can harm utility workers or people in other buildings. before turning on a diesel- or gasoline-powered generator .
the power absorption unit pau of a dynamometer absorbs the power developed by the prime mover. this power absorbed by the dynamometer is then converted into heat, which generally dissipates into the ambient air or transfers to cooling water that dissipates into the air.
the immersion fired boiler is a single-pass fire-tube boiler that was developed by sellers engineering in the 1940s. it has only firetubes, functioning as a furnace and combustion chamber also, with multiple burner nozzles injecting premixed air and natural gas under pressure. it claims reduced thermal stresses, and lacks refractory brickwork .
until the 19th century and into the early 20th century heavy machines were dn under human or animal power. with the advent of portable steam-powered engines the dn machine precursors were reconfigured with the new engines, such as the combine harvester.the design of a core tractor evolved around the new steam power source into a new machine core traction engine, that can be configured as .
an engine or motor is a machine designed to convert one form of energy into mechanical energy. heat engines, like the internal combustion engine, burn a fuel to create heat which is then used to do work. electric motors convert electrical energy into mechanical motion, pneumatic motors use compressed air, and clockwork motors in wind-up toys use elastic energy.
a fan is a powered machine used to create flow within a fluid, typically a gas such as air. a fan consists of a rotating arrangement of vanes or blades which act on the air. the rotating assembly of blades and hub is known as an impeller, rotor, or runner. usually, it is contained within some form of housing or case.
a solar micro-inverter, or simply microinverter, is a plug-and-play device used in photovoltaics, that converts direct current dc generated by a single solar module to alternating current ac . microinverters contrast with conventional string and central solar inverters, in which a single inverter is connected to multiple solar panels.the output from several microinverters can be combined .
cooling fans - also referred to as 'cooling tower fans' - these are axial fans, typically with large diameters, for low pressures and large volumes of airflow. applications are in wet mechanical cooling towers, air-cooled steam condensers, air-cooled heat exchangers, radiators, or similar air-cooled applications.
the process of building airborne forces in 1941 led to a requirement for an air portable 105 mm howitzer. the weapon, initially designated t7, featured a barrel from the 105mm howitzer m2, shortened by 27 inches 690 mm and combined with a recoil system and carriage of the 75 mm field howitzer.
a fan is used to blow air to provide engine load. the torque absorbed by a fan brake may be adjusted by changing the gearing or the fan itself, or by restricting the airflow through the fan. due to the low viscosity of air, this variety of dynamometer is inherently limited in the amount of torque that it can absorb.
the mil mi-24 russian: миль ми-24; nato reporting name: hind is a large helicopter gunship, attack helicopter and low-capacity troop transport with room for eight passengers. it is produced by mil moscow helicopter plant and has been operated since 1972 by the soviet air force and its successors, along with 48 other nations.
similarly, a fan may improve the transfer of thermal energy from the heat sink to the air. construction and materials a heat sink usually consists of a base with one or more flat surfaces and an array of comb or fin-like protrusions to increase the heat sink's surface area contacting the air, and thus increasing the heat dissipation rate.
the transit system, also known as navsat or nnss for navy navigation satellite system , was the first satellite navigation system to be used operationally. the system was primarily used by the u.s. navy to provide accurate location information to its polaris ballistic missile submarines, and it was also used as a navigation system by the navy's surface ships, as well as for hydrographic .
a portable hepa filtration unit used to clean air after a fire, or during manufacturing processes. hepa filters, as defined by the united states department of energy doe standard adopted by most american industries, remove at least 99.97% of airborne particles 0.3 micrometers μm in diameter.