thermal relief
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thermal relief
[′thər·məl ri′lēf] (engineering)
A valve or other device that is preset to open when pressure becomes excessive due to increased temperature of the system.
Also found in: Wikipedia.
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Tenders are invited for supply installation testing and commissioning of thermal relief valve across automation digital control valves along with ss tubing and fittings at five operating locations under punjab state office
This can give one area some thermal relief, while soldering a pin in another area.
ArcView 3.3 and Land Use Land Cover LANDSAT Thematic Mapper (TM) images were used to identify and locate forest cover types that potentially offered thermal relief within the home ranges.
Different residual stress measurement techniques confirmed that the effect of vibration during welding reduces peaks of residual welding stresses by approx 60%, after welding--approx 40%, and thermal relief reduces peaks by approx 62%.
It also means that the market can tap into the most complete range of flow control products through just one point of contact." The availability of Anderson Greenwood and Crosby products will complement other products already present in the Tyco Valves & Controls portfolio in Norway: namely Sempell spring-loaded thermal relief and expansion valves for industrial applications and low pressure pilot valves used in shipping.
Both pumps are reversible and include internal valving and hydraulic circuits that assure high-pressure relief compensation makeup flow capability for each direction and thermal relief pressure compensation against trapped volume heating affects within the fluid.
The basic trap components are barrel, reducer, neck pipe, branch nozzles, kicker, drain, vent, blowdown, balance line, pressurizing line, thermal relief valve, pressure indicator (pressure gauge), supports, lifting lugs, earthing (grounding) lugs, end closure and pig signaller.
Also, if using a thermal relief on power and ground layers, provide a 0.006" clearance per side on internal layers and an 0.008" per side on plated layers external or buried via layers.
Designs with poor thermal relief that could barely meet SnPb hole fill requirements are not likely to meet those same workmanship standards with Pb-free.
Our data suggest that CSP elk obtain thermal relief in sites containing [greater than] 54% canopy closure.
As a general guideline, always use a thermal relief pattern for any via or hole that is connected to a ground or power plane.
PCB assemblies with high thermal mass challenges--design elements like thick copper planes, bulky components or poor thermal relief on ground ties--need extended preheat cycles to warm them to soldering temperature and extended wave contact times to let solder wick up the holes.
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