UC知道紧急求助，帮忙翻译一篇东西，高分悬赏
来源：百度知道 编辑：UC知道 时间：2024/05/27 09:19:13
The dynamic adiabatic-box technique [18], which is a secondary but simple and
inexpensive technique, is used here for the thermal tests. The technique can be used
for pre-estimation purpose for materials developed in a laboratory before taking
absolute measurements with one of the standardized techniques, if necessary.
The apparatus is schematically illustrated in Fig. 2a. The main component of the
apparatus is the adiabatic-box, whose outer and bottom walls are heavily insulated
to minimize heat losses to its surroundings. The test specimen with much higher
thermal conductivity and thinner in size forms the top wall of the box to provide
one-dimensional axial heat flow. The dimensions of the box are shown in Fig. 2b.
A heater controlled by a thermostat is installed close to the bottom wall for
heating small depth of water to a certain temperature (ranges between 35 and
55 C). Using water in the box helps to obtain more homogenous
inexpensive technique, is used here for the thermal tests. The technique can be used
for pre-estimation purpose for materials developed in a laboratory before taking
absolute measurements with one of the standardized techniques, if necessary.
The apparatus is schematically illustrated in Fig. 2a. The main component of the
apparatus is the adiabatic-box, whose outer and bottom walls are heavily insulated
to minimize heat losses to its surroundings. The test specimen with much higher
thermal conductivity and thinner in size forms the top wall of the box to provide
one-dimensional axial heat flow. The dimensions of the box are shown in Fig. 2b.
A heater controlled by a thermostat is installed close to the bottom wall for
heating small depth of water to a certain temperature (ranges between 35 and
55 C). Using water in the box helps to obtain more homogenous
动态绝热盒技术[ 18 ] ，这是第二个，但简单，
廉价的技术，用在这里的热试验。该技术可用于
预先估计的目的材料在实验室之前
绝对测量的一个标准化的技术，如果有必要。
该仪器schematically说明图。 2A型。的主要组成部分
仪器是绝热盒，其外部和底部墙壁严重绝缘
最大限度地减少热量的损失及其周围地区。测试试样的高得多
导热性和更薄的大小形式顶层墙体的方框提供
一维轴向热流。的尺寸方块中显示图。 2b干扰素。
一个加热器恒温控制安装接近底部墙
暖气小水深在一定温度（介于35和
55摄氏度） 。利用水在框中有助于获得更多的均匀温度分布
在加热过程中横向和瞬态冷却。这个盒子是放在
在寒冷的商会工作在控制固定温度，湿度和空气流通
条件。温度和相对湿度传感器的位置在几个
点来衡量相应的空气条件。一个高度灵敏的潜
温度传感器集成与内部数据记录仪投入水监测
它的温度。试样紧密尽快安装水加热至
理想的温度。加热器然后关闭，让水的热损失
顶层墙体的方块。该数据记录在短暂的状态在这个时候开始的
吨= 0 。冷却速度的水可以被认为是衡量试样热透射
因为主要部分的热量转移通过试样的表面。
分析的时间温度曲线确实允许估算总热量
传热系数（水与冷空气） 。测量可以延长
各种冷热空间条件，包括对流的影响
可能是一个重要的组成部分，特别是对传热屋顶标本。
这种新的热测试技术已被证明是更可利用和
免费的许多问题时，不同的非均匀标本检测
纯粹相同冷热空间条件[ 18 ] 。浅析时间温度
曲线标本允许公平比较其热transmittances
在特定条件下[ 17,18 ] 。