نتایج جستجو برای: bundle of heaters
تعداد نتایج: 21166645 فیلتر نتایج به سال:
On airport runways, blue light fixtures denote taxiways between the runway and the airport terminal. Blue optics transmit mostly short-wavelength radiation, which makes traditional incandescent lamps a poor choice of light source; the resulting fixture efficiency could be less than one percent. LEDs are replacing incandescent lamps in this application. But unlike incandescent sources, LEDs do n...
IR Versus Convection Heating Medium-wavelength electric IR heating is especially wellsuited to the curing and drying of coatings, because these wavelengths correspond well with the absorption bands for water, which most coatings contain. Additionally, since IR heating does not penetrate the surface very deeply and generally only heats the outer surface, it is applicable for drying coated and pr...
INNER WORKINGS Correction for “Whole-climate experiments for peatlands,” by Stephen Ornes, which appeared in issue 23, June 4, 2013, of Proc Natl Acad Sci USA (110:9188; first published June 4, 2013; 10.1073/pnas.1307957110). The author notes that on page 9188, right column, second full paragraph, lines 4−8, “Heaters both above and below ground— extending down 3 meters (9.8 feet)—will warm the ...
Two, lightweight diode laser frequency stabilization systems designed for experiments in the field are described. A significant reduction in size and weight in both models supports the further miniaturization of measurement devices in the field. Similar to a previous design, magnetic field lines are contained within a magnetic shield enclosing permanent magnets and a Rb cell, so that these dich...
AIMS Left ventricular (LV) asynchrony assessment is mostly based on delays between regional myocardial velocity peaks. Regional function is barely considered. We propose apical transverse motion (ATM) as a new parameter integrating both temporal and functional information, which was tested in different conduction delays. METHODS AND RESULTS We examined 67 patients, 11 patients with post-infar...
This paper deals with the basic notions of k-tautimmersions . These notions come from two special cases; that is, tight and taut immersions. Tight and taut based on high and distance functions respectively and their basic notions are normal bundle, endpoint map, focal point, critical normal. We generalize hight and distance functions to cylindrical function and define basic notions of k-taut ...
The issue of freezing often occurs when using all-glass vacuum tube solar water heaters during cold winter seasons, leading to problems such as pipe ruptures and tank leakage. In order further study the nocturnal heat dissipation characteristics these heaters, a three-dimensional transient numerical model their was established. simulated process, experimental validations were conducted through ...
Abstract Capillary heat exchangers are a great alternative to conventional radiators or electric heaters when used with pumps due larger area and therefore lower working temperature. In this work, we study thermal conditions in model room using either capillary heaters. Experimental measurements special test building validate adjust numerical models. The results show that the vertical temperatu...
Solar air heaters (SAHs) are the most widely used and inexpensive solar energy systems. As absorbing plate collects radiation transfers heat to passing air, many effective experimental analytical studies have been conducted on SAH roughness by a number of researchers. The artificial elements that break down laminar sub-layer at surface absorber detailed in this work order optimize transfer abso...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید