Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers . y this, I mean that all of the heat which is generated bythe combustion of the gas, will be available for the heating ofthe room in which the heater is placed, this heating being effectedby radiation or convection (as practically every gas heater isso supported on legs that the transference of heat by conduc-tion need not be considered). Some heaters are more efficient than others, not because theyare better heaters, but because the character of the heat issomewhat pleasanter, and it was for the purpose
Transactions - American Society of Heating, Refrigerating and Air-Conditioning Engineers . y this, I mean that all of the heat which is generated bythe combustion of the gas, will be available for the heating ofthe room in which the heater is placed, this heating being effectedby radiation or convection (as practically every gas heater isso supported on legs that the transference of heat by conduc-tion need not be considered). Some heaters are more efficient than others, not because theyare better heaters, but because the character of the heat issomewhat pleasanter, and it was for the purpose of determiningthe characteristics that produced the more desirable results, thatwe started our study of the distribution of radiant heat, intend-ing to supplement these tests by others which would study theconvection currents. Unfortunately, other work of more pressing nature has inter-vened, and it has been impossible for us to continue our inves-tigation. To measure this heat, a special form of calorimeter was de-vised, and a diagrammatic sketch of this piece of apparatus A wooden stand, A, supports the heater, about the heater (except underneath) there is ahollow lune of copper, C, about 3 x ^ inch in section. 344 DISCUSSION ON ROOM HEATING BY MEANS OF GAS BURNING APPLIANCES The side of the lune towards the heater is blackened, in orderto absorb as large a proportion as possible of the radiant energywhich falls on it. A shield, D, of bright tin is arranged on the same axes asthe axes of the lune, and is used for shielding the lune from theradiation as will be described further on. The lune and its shield are supported on the stands, E, bymeans of the pipe axes, G and H. G leads from the watersupply F, and H is an outlet to a bucket, K, on the pan ofa scale, L, The thermometers, T and J, give the tempera-tures of the inlet and outlet water. To operate, the heater is lighted and allowed to burn until ithas reached a uniform temperature. Water is then a
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Keywords: ., bookcentury1800, bookdecade1890, bookidtransactions, bookyear1895
