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请教各位:19.8中“如果温升大约为1K(1℃)/min,则该实验就完成了。”请问,其中的温升指的是谁的温升?其中的试验指的是什么试验?
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. C7 V1 \; J) _19.8 All appliances provided with supplementary heaters are subjected to the following test
- O/ J3 P$ G- Ounder the conditions specified in Clause 11:
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After the airflow conditions specified are established, the indoor airflow is restricted to such
, }6 {+ B# h, i( @2 W, N% can extent that the temperature of the air in the outlet, measured by means of the* O0 D# u; J% p% _. ~ v2 I
thermocouple grid (see 11.3), is 3 K below the temperature obtained after a temperature# l# b; F0 A V& k6 s" n! V
limiting control, a motor protective device, a pressure switch or similar device operates for$ P2 ^6 c( P, _3 f, b- |
the first time as a result of slowly restricting the free area of the inlet.( v3 C. Z5 b+ |/ X
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This is achieved if the temperature rise is approximately 1 K per min.9 j: Q& C7 ^5 ^# J2 B4 K
3 [% a' B d' c' S, T5 FIt is necessary to restrict the free area of the inlet until the first of the protective devices
6 x* M! W. n0 x0 v6 aoperates and then operation is resumed with sufficient restriction so that the temperature of) h7 u9 |0 C2 p3 u% B r& E
the discharge air is 3 K below the temperature at the moment of cut-off.1 _/ s3 V. Q/ U
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Appliances are operated at rated voltage or at the upper limit of the rated voltage range.
, c6 y; u5 i1 P; F- Q. n$ [9 s" DNOTE 101 To facilitate this test, the protective device which has operated may be short-circuited once the temperature at which it operates has been determined. |
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