The Locomotive . sent-STeei. OHSresLSree-L ANTIMOrtr CO»POSlTlO/t. L£AO AflTIHOtlY Cornposirioti SEMI-STEeu Of* STEEL Spec/AL rton-ojRRosivE ^iPipe Plus lPiPEi Tap Massachusetts Standard Ammonia Safety Valve. make it a desirable commercial refrigerant, first, its low temperatureof evaporation (—28°F at atmospheric pressure), and second, its highlatent heat. Before the liquid anhydrous ammonia can evaporate or boil intoa gas it must be supplied with heat, and this heat must come from thebrine, or air in the refrigerating rooms. If the expansion coils were 1927.] l- 11 i: L O C O M O T I V
The Locomotive . sent-STeei. OHSresLSree-L ANTIMOrtr CO»POSlTlO/t. L£AO AflTIHOtlY Cornposirioti SEMI-STEeu Of* STEEL Spec/AL rton-ojRRosivE ^iPipe Plus lPiPEi Tap Massachusetts Standard Ammonia Safety Valve. make it a desirable commercial refrigerant, first, its low temperatureof evaporation (—28°F at atmospheric pressure), and second, its highlatent heat. Before the liquid anhydrous ammonia can evaporate or boil intoa gas it must be supplied with heat, and this heat must come from thebrine, or air in the refrigerating rooms. If the expansion coils were 1927.] l- 11 i: L O C O M O T I V E . 137 under a gage pressure of 23 lbs. each pound (weight) of ammoniaevaporated would require the absorption of about 564 The expansion coils are either immersed in brine and the brinecirculated in pipes in the cold storage rooms (indirect system), orelse the coils are installed directly in the rooms to be cooled (directsystem). After the ammonia has evaporated in the expansion coilsit is pumped back into the suction side of the compressor and thecycle b
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Keywords: ., bookauthorhartfordsteamboilerin, bookcentury1800, bookdecade1860
