Cork insulation; a complete illustrated textbook on cork insulation ...

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380 CORK INSULATION j Household refrigerators, as at present produced, may be 1 dhided into three main classes: (a) Ice cooled. (b) Ice or mechanically cooled. (c) Mechanically cooled. i It is not, in general, satisfactory to design and build refrigerators for dual service; that is, a refrigerator correctly designed for mechanical cooling may possibly be adjusted to ice, but the average ice refrigerator, though satisfactory with ice, usually is not satisfactory when mechanically cooled, for rea- j sons having to do with temperature and <strong>insulation</strong>, as elabo- j rated throughout this Chapter, and for still other reasons to be ! noted. Tlie ice cooled refrigerator, on the one hand, aims to : fulfill one major function: 1. To maintain at a suitable and reasonably uniform temperature a ! compartment for the storing of ]ierishable foodstufifs. i The mechanically cooled refrigerator, on the other hand, must ; fulfill an additional major function: I 2. To supply at all times cul)e-ico lor table use. 1 These functions are sufiiciently unrelated, or require sufficient j correlation, as to make the two types of refrigerators some- ; what dissimilar in design. Consequentl}', for the present, all j tests on household refrigeratt)rs should be made from the standpoint of either ice cooling or mechanical cooling. Considering first the ice cooled refrigerator, it is well understood that a "suitable" temperature must of necessity fall within a higher zone than would be possible with mechanical refrigeration, which higher zone of temperatures has both its advantages and its disadvantages. It imposes a narrow limit of safet}' for temperature fluctuations from the zone of satisfactory temperature operation; ])ut it provides a temperature zone in which miscellaneous "moist foods" may be stored in the same compartment with the minimum loss of weight and natural flavor, and, because of the air purifying process constantly carried on by the absorption of odors by the water of ice meltage, it guarantees against the tainting of one food from the odors of another. The temperature of melting ice being Z2° F., the coldest air dropping into the t'ood compartment will range from about ' { I j
CORKBOARD INSULATED REFRIGERATOR 381 40° to 50° F., depending on the amount of ice in the ice chamber, the rate of air circulation, the room temperature and humidity, and the insuhition of the refrigerator. The rise in temperature of the air in passing through the food compartment may range front 10 to 20 degrees, circulation, room temperature and <strong>insulation</strong> being the determining factors. United States Government tests* on a number of standard refrigerators show that the comparative rate of air flow in nine different refrigerators varied as much as 100 per cent under identical operating conditions. A wide range of temperature between the coldest and the warmest points in the food compartment indicates sluggish air circulation, if ice supply is adequate, not active air circulation. The \'ariation in the food comj)artment temperature of an ice refrigerator should not l)e more than about 10 degrees ; because since 40° F. is about the lowest temperature to be reasonably expected, 50° F. would then be the highest temperature, and 50° F. is near the temperature limit at which many perishable food- stuffs can be safely preserved. The refrigerator using ice may be expected to have an average temperature in the food compartment from 20, or 25. to 35 degrees lower than the room temperature, but only the better types of refrigerators will ap])r()ach the 35 degree temperature difference with a good su])ply of ice in the ice compartment and the room temperature at about 90° F. The average temperature of the food compartment of the better refrigerators under such conditions would then be about 55° F., and in the poorly constructed ones the average temperaHu'e would be 65° F. or more. The average temperature of the food compartment of an ice cooled refrigerator ma}' be reduced in three ways 1. By breaking u]i the ice in the ice compartment so as to expose more surface to the circulating air. 2. By increasing the air circulation. 3. By increasing the <strong>insulation</strong> in the walls of the refrigerator. If the ice is broken up to expose more surface to be melted and thus cause more heat to lê absorbed from the circulating air of the refrigerator, a lower temperature will be produced *U. S. Bureau of Standards Circular No. 55. :
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ôofeâ- 1842.4 This book may be ke
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Cork Insulation A
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To the Memory of JAMES EDWARD QUIGL
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tion of cork to other and more remo
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viii TABLE OF CONTENTS CHAPTER VI.
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X TABLE OF CONTENTS CHAPTER XIII. C
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xii TABLE OF CONTENTS CHAPTER XVIII
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2 CORK INSULATION floats for nets,
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CORK INSULATION vfany attem])ts lia
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6 CORK INSULATION •^ 4.—Home of
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8 CORK INSULATION and fifty feet an
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CHAPTER II. CORK STRIPPING. 6.—Re
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12 CORK INSULATION the cork oak tre
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14 CORK INSULATION seasoning prelim
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CHAPTER III. USES OF CORKWOOD AND U
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S CORK INSULATION 12.—Importance
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20 CORK INSULATION usually scraped,
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22 CORK INSULATION ful utilization
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24 CORK INSULATION from capillarity
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26 CORK INSULATION in place and spi
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28 CORK INSULATION for cold storage
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30 CORK INSULATION very substantial
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Z2 CORK INSULATION came The Nonpare
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34 CORK INSULATION glass bottle, al
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36 CORK INSULATION merit and an eff
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38 CORK INSULATION Paragraph 340.
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40 CORK INSULATION turning those st
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42 CORK INSULATION tip
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44 CORK INSULATION IMPORTS INTO UNI
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46 CORK INSULATION IMPORTS INTO UNI
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IMPORTS INTO UNITED STATES CORK INS
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so CORK INSULATION IMPORTS INTO UNI
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52 CORK INSULATION < i 2
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54 CORK INSULATION
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56 CORK INSULATION
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58 CORK INSULATION IMPORTS ENTERED
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70 CORK INSULATION O" coo I lOiM <
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72 CORK INSULATION crease by its be
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74 CORK INSULATION the tube and mer
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76 CORK INSULATION cooled, the air
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78 CORK INSULATION ordinary pressur
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80 CORK INSULATION sion. If a subst
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CHAPTER VIII. MEASUREMENT OF HEAT,
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84 CORK INSULATION equal to unity,
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86 CORK INSULATION The heat of fusi
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88 CORK INSULATION vaporize, and wh
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90 CORK INSULATION a pressure of 35
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92 CORK INSULATION of such air at t
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94 CORK INSULATION RELATIVE HUMIDIT
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96 CORK INSULATION and the temperat
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98 CORK INSULATION perature of the
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100 CORK INSULATION INTERNAL THERMA
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102 CORK INSULATION usually classed
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104 CORK INSULATION lose by radiati
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106 CORK INSULATION age wall <stron
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108 CORK INSULATION It will be seen
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110 CORK INSULATION H=K A (.U—U)
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112 CORK INSULATION : equals 17917,
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114 CORK INSULATION convection, and
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116 CORK INSULATION metal boxes wit
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118 CORK INSULATION the test box wi
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120 CORK INSULATION the areas and t
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122 CORK INSULATION 79.—Tests by
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124 CORK INSULATION a narrow limit,
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126 CORK INSULATION In addition to
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128 CORK INSULATION applications we
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130 CORK INSULATION
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132 CORK INSULATION j;aii 03 O .O 2
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134 CORK INSULATION
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136 CORK INSULATION
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138 CORK INSULATION
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140 CORK INSULATION
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142 CORK INSULATION
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144 CORK INSULATION
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146 CORK INSULATION
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148 CORK INSULATION
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ISO CORK INSULATION ^ I CO « O :s
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152 CORK INSULATION
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154 CORK INSULATION
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156 CORK INSULATION o ffi K K a ,=5
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158 CORK INSULATION
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160 CORK INSULATION o ^ J W to
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162 CORK INSULATION
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164 CORK INSULATION
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166 CORK INSULATION Section XI of *
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168 CORK INSULATION capillarity, el
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170 CORK INSULATION conceivable min
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172 CORK INSULATION test consists o
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174 CORK INSULATION 85.—Convenien
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176 CORK INSULATION basement except
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CHAPTER XII. PROPER THICKNESS OF CO
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ISO CORK INSULATION i ness that wil
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182 CORK INSULATION that a small ch
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184 CORK INSULATION 91.—Proper Th
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186 CORK INSULATION license alone i
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188 CORK INSULATION In new structur
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190 CORK INSULATION ure, in closed-
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192 CORK INSULATION corner of the r
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194 CORK INSULATION should be rever
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196 CORK INSULATION cold storage ro
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198 CORK INSULATION In the early da
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200 CORK INSULATION Until comparati
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202 CORK INSULATION overcome obstac
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204 CORK INSULATION introducing pur
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206 CORK INSULATION Pure air is dif
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208 CORK INSULATION ing capacity. I
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210 CORK INSULATION A hard, repress
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212 CORK INSULATION storage room is
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216 CORK INSULATION joists of such
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218 CORK INSULATION and delicately
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220 CORK INSULATION slight variatio
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222 CORK INSULATION filler and then
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224 CORK INSULATION ating less heat
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226 CORK INSULATION The first petro
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228 CORK INSULATION to be used in a
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230 CORK INSULATION Flash Point is
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232 CORK INSULATION A suitable Asph
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234 CORK INSULATION enveloping memb
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236 CORK INSULATION fying agent, on
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238 CORK INSULATION at 105° C. The
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CHAPTER XIII. COMPLETE SPECIFICATIO
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242 CORK INSULATION 116.—Finish.
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244 CORK INSULATION a second layer
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246 CORK INSULATION one layer of ..
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248 CORK INSULATION CE/LING :-)::):
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250 CORK INSULATION into which cork
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252 CORK INSULATION 106.—Ceilings
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254 CORK INSULATION insulated, one
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256 CORK INSULATION compounds.* The
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258 CORK INSULATION to all joints i
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260 CORK INSULATION »
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262 CORK INSULATION 110.—Floors.
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264 CORK INSULATION the size of the
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266 CORK INSULATION Asphalt cement.
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268 CORK INSULATION shall then be e
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270 CORK INSULATION To the reasonab
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272 CORK INSULATION butted tight, a
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274 CORK INSULATION mixed one part
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276 CORK INSULATION consisting of .
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278 CORK INSULATION of . . .-inch p
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280 CORK INSULATION sand* for each
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282 CORK INSULATION To prepare Asph
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284 CORK INSULATION must be applied
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286 CORK INSULATION plied, and the
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288 CORK INSULATION 122.—Second L
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290 CORK INSULATION 124.—First La
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292 CORK INSULATION that the forms
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294 CORK INSULATION and all joints
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296 CORK INSULATION Break all joint
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298 CORK INSULATION board uncoated
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300 CORK INSULATION area (one face
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302 CORK INSULATION [ storage doors
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3(X CORK INSULATION surface*, and t
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506 CORK INSULATION floor, on a lev
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308 CORK INSULATION See that the fi
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310 CORK INSULATION line of the fla
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312 CORK INSULATION corkboards are
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314 CORK INSULATION mixed product*,
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316 CORK INSULATION floors and baff
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318 CORK INSULATION History also sh
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320 CORK INSULATION into natural ic
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322 CORK INSULATION them from freez
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324 CORK INSULATION smaller establi
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326 CORK INSULATION on the "Mechani
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328 CORK INSULATION the four walls
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Page 346 and 347: CHAPTER XVI. DEVELOPMENT OF THE COR
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Page 372 and 373: 358 CORK INSULATION Handles and Cor
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Page 400 and 401: CHAPTER XVII. DEVELOPMENT OF THE CO
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Page 404 and 405: 390 CORK INSULATION cream manufactu
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Page 410 and 411: 396 CORK INSULATION dumping of the
Page 412 and 413: 398 CORK INSULATION The Machine.—
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Page 422 and 423: 408 CORK INSULATION oning millions
Page 424 and 425: 41C CORK INSULATION ing for the top
Page 426 and 427: 412 CORK INSULATION Adjusliiii) Pla
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Page 430 and 431: 416 CORK INSULATION These compresso
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430 CORK INSULATION warmest and the
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432 CORK INSULATION CHART IV The we
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434 CORK INSULATION That precooling
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436 CORK INSULATION Mr. President,
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438 CORK INSULATION the elimination
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440 CORK INSULATION Now let me proc
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442 CORK INSULATION of the eggs on
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444 CORK INSULATION It may be said
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446 CORK INSULATION occur. Salting
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448 CORK INSULATION the two inches
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450 CORK INSULATION ables as anythi
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452 CORK INSULATION We are continui
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454 CORK INSULATION Our object was
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456 CORK INSULATION As air circulat
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458 CORK INSULATION ers and cross s
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460 CORK INSULATION States standard
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462 CORK INSULATION temperature and
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464 CORK INSULATION CORK PAINT.* Fo
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466 CORK INSULATION strengthening c
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468 CORK INSULATION only 0.38; that
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470 CORK INSULATION
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472 CORK INSULATION possible throug
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474 CORK INSULATION ing and heating
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476 CORK INSULATION that for each o
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478 CORK INSULATION case of other g
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480 CORK INSULATION because it will
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482 CORK INSULATION ECONOMY OF GASO
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484 CORK INSULATION That this amoun
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486 CORK INSULATION form on walls a
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488 CORK INSULATION Practically all
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490 CORK INSULATION for the pebbles
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492 CORK INSULATION nailed to three
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494 CORK INSULATION QUANTITIES OF C
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496 CORK INSULATION EXAMPLE OF PURC
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498 CORK INSULATION Portland cement
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500 CORK INSULATION FREIGHT CLASSIF
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502 CORK INSULATION CORK PIPE COVER
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504 CORK INSULATION to give a bette
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506 CORK INSULATION 3. Ice Water Th
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508 CORK INSULATION brought tightly
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510 CORK INSULATION A GOOD DRINK OF
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512 CORK INSULATION The Cost and th
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514 CORK INSULATION cause the agree
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516 CORK INSULATION Legality— In
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518 CORK INSULATION In general, unl
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520 CORK INSULATION the work should
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522 CORK INSULATION (1) Page $8, pa
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524 CORK INSULATION Brooks ice crea
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526 Page Depreciation in efficiency
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528 CORK INSULATION test of asphalt
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530 CORK INSULATION ice, formation
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532 Page Sealed air cells 169 Seali
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534 CORK INSULATION Page of heat by
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GOOD BOOKS YOU SHOULD HAVE These ar
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DATE DUE
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