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气候试验室报告监测构成市场的重要动态,包括行业驱动因素,限制,气候试验室部门的区域新闻和政策,主要参与者增长的可能性以及全球市场对气候试验室的需求。

恒温恒湿试验机中单级制冷循环基本上采用的中温制冷剂是R404A,在一个大气压下其蒸发温度是-46.5℃(R22/-40.7℃),但空气冷却式冷凝器传热温差通常取10℃左右(在强制送风散热循环下,蒸发器和内箱的温差),就是说箱内只能制取-36.5℃的低温,当然,通过调低压缩机的蒸发压力,可以将R404A制冷剂的最低蒸发温度降低到-50℃;所以要获取-50℃及以下的低温时必须采用中温制冷剂与低温制冷剂复叠式的制冷循环,制取-50℃~-80℃的低温,低温制冷剂一般选用R23它在一个大气压下的蒸发温度是-81.7℃。

玻璃纤维绝缘环绕温度室以最大化绝缘特性,从而确保最小的热传递

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